#!/usr/bin/env python3
"""Generate Go benchmark fixture files (~2-3K LOC) for webapp_go/."""

import os
import textwrap

BASE = os.path.join(os.path.dirname(os.path.abspath(__file__)), "webapp_go")


def w(path, content):
    full = os.path.join(BASE, path)
    os.makedirs(os.path.dirname(full), exist_ok=True)
    with open(full, "w") as f:
        f.write(textwrap.dedent(content).lstrip())
    print(f"  CREATED: {path}")


# ─── 1. pkg/logger/logger.go ───
w(
    "pkg/logger/logger.go",
    """\
    package logger

    import (
        "fmt"
        "time"
    )

    // LogLevel represents the severity of a log message.
    type LogLevel int

    const (
        DEBUG LogLevel = iota
        INFO
        WARN
        ERROR
        FATAL
    )

    // Logger provides structured logging for a named component.
    type Logger struct {
        Name  string
        Level LogLevel
    }

    // GetLogger creates a new Logger instance for the given component name.
    func GetLogger(name string) *Logger {
        return &Logger{
            Name:  name,
            Level: DEBUG,
        }
    }

    func (l *Logger) timestamp() string {
        return time.Now().Format("2006-01-02T15:04:05.000Z07:00")
    }

    // Info logs an informational message.
    func (l *Logger) Info(msg string, args ...interface{}) {
        if l.Level <= INFO {
            formatted := fmt.Sprintf(msg, args...)
            fmt.Printf("[%s] INFO  [%s] %s\\n", l.timestamp(), l.Name, formatted)
        }
    }

    // Error logs an error message.
    func (l *Logger) Error(msg string, args ...interface{}) {
        if l.Level <= ERROR {
            formatted := fmt.Sprintf(msg, args...)
            fmt.Printf("[%s] ERROR [%s] %s\\n", l.timestamp(), l.Name, formatted)
        }
    }

    // Warn logs a warning message.
    func (l *Logger) Warn(msg string, args ...interface{}) {
        if l.Level <= WARN {
            formatted := fmt.Sprintf(msg, args...)
            fmt.Printf("[%s] WARN  [%s] %s\\n", l.timestamp(), l.Name, formatted)
        }
    }

    // Debug logs a debug message.
    func (l *Logger) Debug(msg string, args ...interface{}) {
        if l.Level <= DEBUG {
            formatted := fmt.Sprintf(msg, args...)
            fmt.Printf("[%s] DEBUG [%s] %s\\n", l.timestamp(), l.Name, formatted)
        }
    }

    // SetLevel changes the minimum log level for this logger.
    func (l *Logger) SetLevel(level LogLevel) {
        l.Level = level
    }

    // WithField returns a child logger with an added context field.
    func (l *Logger) WithField(key, value string) *Logger {
        return &Logger{
            Name:  fmt.Sprintf("%s[%s=%s]", l.Name, key, value),
            Level: l.Level,
        }
    }
    """,
)

# ─── 2. internal/errors/errors.go ───
w(
    "internal/errors/errors.go",
    """\
    package errors

    import (
        "fmt"

        "pkg/logger"
    )

    var log = logger.GetLogger("errors")

    // AppError is the base error type for the application.
    type AppError struct {
        Message string
        Code    int
        Cause   error
    }

    // Error implements the error interface.
    func (e *AppError) Error() string {
        if e.Cause != nil {
            return fmt.Sprintf("[%d] %s: %v", e.Code, e.Message, e.Cause)
        }
        return fmt.Sprintf("[%d] %s", e.Code, e.Message)
    }

    // Unwrap returns the underlying cause.
    func (e *AppError) Unwrap() error {
        return e.Cause
    }

    // NewAppError creates a new AppError with the given message and code.
    func NewAppError(message string, code int) *AppError {
        log.Error("AppError created: %s (code=%d)", message, code)
        return &AppError{Message: message, Code: code}
    }

    // ValidationError represents a validation failure.
    type ValidationError struct {
        AppError
        Field string
    }

    // NewValidationError creates a validation error for a specific field.
    func NewValidationError(field, message string) *ValidationError {
        log.Warn("Validation failed: field=%s, msg=%s", field, message)
        return &ValidationError{
            AppError: AppError{Message: message, Code: 400},
            Field:    field,
        }
    }

    // PaymentError represents a payment processing failure.
    type PaymentError struct {
        AppError
        TransactionID string
    }

    // NewPaymentError creates a payment error for a given transaction.
    func NewPaymentError(txnID, message string) *PaymentError {
        log.Error("Payment error: txn=%s, msg=%s", txnID, message)
        return &PaymentError{
            AppError:      AppError{Message: message, Code: 402},
            TransactionID: txnID,
        }
    }

    // NotFoundError represents a resource not found error.
    type NotFoundError struct {
        AppError
        Resource string
    }

    // NewNotFoundError creates a not-found error for a given resource.
    func NewNotFoundError(resource, id string) *NotFoundError {
        log.Warn("Not found: resource=%s, id=%s", resource, id)
        return &NotFoundError{
            AppError: AppError{Message: fmt.Sprintf("%s not found: %s", resource, id), Code: 404},
            Resource: resource,
        }
    }

    // RateLimitError represents a rate limiting error.
    type RateLimitError struct {
        AppError
        RetryAfter int
    }

    // NewRateLimitError creates a rate limit error with retry-after seconds.
    func NewRateLimitError(retryAfter int) *RateLimitError {
        log.Warn("Rate limit exceeded, retry after %d seconds", retryAfter)
        return &RateLimitError{
            AppError:   AppError{Message: "rate limit exceeded", Code: 429},
            RetryAfter: retryAfter,
        }
    }
    """,
)

# ─── 3. internal/auth/tokens.go ───
w(
    "internal/auth/tokens.go",
    """\
    package auth

    import (
        "fmt"

        "pkg/logger"
    )

    var tokenLog = logger.GetLogger("auth.tokens")

    // TOKEN_EXPIRY is the default token expiry in seconds.
    const TOKEN_EXPIRY = 3600

    // TokenError represents a token-related error.
    type TokenError struct {
        Message string
    }

    // Error implements the error interface.
    func (e *TokenError) Error() string {
        return fmt.Sprintf("TokenError: %s", e.Message)
    }

    // ExpiredTokenError indicates the token has expired.
    type ExpiredTokenError struct {
        TokenError
        ExpiredAt string
    }

    // TokenClaims holds the decoded claims from a JWT token.
    type TokenClaims struct {
        UserID    string
        Email     string
        Role      string
        IssuedAt  int64
        ExpiresAt int64
    }

    // GenerateToken creates a new JWT token for the given user.
    func GenerateToken(user User) string {
        tokenLog.Info("Generating token for user: %s", user.Email)
        token := fmt.Sprintf("jwt_%s_%s_%d", user.ID, user.Email, TOKEN_EXPIRY)
        tokenLog.Debug("Token generated successfully")
        return token
    }

    // ValidateToken checks if a token is valid and returns the claims.
    func ValidateToken(token string) (*TokenClaims, error) {
        tokenLog.Info("Validating token")
        if token == "" {
            tokenLog.Error("Empty token provided")
            return nil, &TokenError{Message: "empty token"}
        }
        if len(token) < 10 {
            tokenLog.Error("Token too short")
            return nil, &ExpiredTokenError{
                TokenError: TokenError{Message: "token expired"},
                ExpiredAt:  "unknown",
            }
        }
        claims := &TokenClaims{
            UserID: "user_1",
            Email:  "user@example.com",
            Role:   "user",
        }
        tokenLog.Info("Token validated for user: %s", claims.UserID)
        return claims, nil
    }

    // RefreshToken generates a new token from an existing one.
    func RefreshToken(oldToken string) (string, error) {
        tokenLog.Info("Refreshing token")
        claims, err := ValidateToken(oldToken)
        if err != nil {
            tokenLog.Error("Cannot refresh invalid token: %v", err)
            return "", err
        }
        user := User{ID: claims.UserID, Email: claims.Email}
        newToken := GenerateToken(user)
        tokenLog.Info("Token refreshed for user: %s", claims.UserID)
        return newToken, nil
    }

    // RevokeToken invalidates a single token.
    func RevokeToken(token string) error {
        tokenLog.Info("Revoking token")
        if token == "" {
            return &TokenError{Message: "cannot revoke empty token"}
        }
        tokenLog.Info("Token revoked successfully")
        return nil
    }

    // RevokeAllTokens invalidates all tokens for a user, returns count revoked.
    func RevokeAllTokens(userID string) int {
        tokenLog.Info("Revoking all tokens for user: %s", userID)
        count := 3
        tokenLog.Info("Revoked %d tokens for user: %s", count, userID)
        return count
    }

    // ExtractToken pulls the bearer token from request headers.
    func ExtractToken(headers map[string]string) string {
        tokenLog.Debug("Extracting token from headers")
        auth, ok := headers["Authorization"]
        if !ok {
            tokenLog.Warn("No Authorization header found")
            return ""
        }
        if len(auth) > 7 && auth[:7] == "Bearer " {
            return auth[7:]
        }
        tokenLog.Warn("Malformed Authorization header")
        return ""
    }

    // FindByToken looks up token claims by token string.
    func FindByToken(token string) *TokenClaims {
        tokenLog.Info("Looking up token")
        claims, err := ValidateToken(token)
        if err != nil {
            tokenLog.Error("Token lookup failed: %v", err)
            return nil
        }
        return claims
    }
    """,
)

# ─── 4. internal/auth/service.go ───
w(
    "internal/auth/service.go",
    """\
    package auth

    import (
        "fmt"

        "pkg/logger"
    )

    var serviceLog = logger.GetLogger("auth.service")

    // User represents an authenticated user.
    type User struct {
        ID       string
        Email    string
        Password string
        Name     string
        Role     string
        Active   bool
    }

    // AuthProvider defines the interface for authentication providers.
    type AuthProvider interface {
        Login(email, password string) (string, error)
        Logout(token string) error
    }

    // BaseService provides common service functionality.
    type BaseService struct {
        Name    string
        Version string
    }

    // Initialize sets up the base service.
    func (b *BaseService) Initialize() {
        serviceLog.Info("Initializing service: %s v%s", b.Name, b.Version)
    }

    // AuthService handles user authentication.
    type AuthService struct {
        BaseService
        Users map[string]*User
    }

    // NewAuthService creates a new authentication service.
    func NewAuthService() *AuthService {
        svc := &AuthService{
            BaseService: BaseService{Name: "auth", Version: "1.0"},
            Users:       make(map[string]*User),
        }
        svc.Initialize()
        serviceLog.Info("AuthService created")
        return svc
    }

    // Login authenticates a user and returns a token.
    func (s *AuthService) Login(email, password string) (string, error) {
        serviceLog.Info("Login attempt for: %s", email)
        user, ok := s.Users[email]
        if !ok {
            serviceLog.Warn("User not found: %s", email)
            return "", fmt.Errorf("user not found: %s", email)
        }
        if user.Password != password {
            serviceLog.Warn("Invalid password for: %s", email)
            return "", fmt.Errorf("invalid credentials")
        }
        if !user.Active {
            serviceLog.Warn("Inactive user: %s", email)
            return "", fmt.Errorf("account disabled")
        }
        token := GenerateToken(*user)
        serviceLog.Info("Login successful for: %s", email)
        return token, nil
    }

    // Logout invalidates a user's token.
    func (s *AuthService) Logout(token string) error {
        serviceLog.Info("Logout request")
        return RevokeToken(token)
    }

    // GetCurrentUser returns the user associated with a token.
    func (s *AuthService) GetCurrentUser(token string) (*User, error) {
        serviceLog.Info("Getting current user from token")
        claims, err := ValidateToken(token)
        if err != nil {
            serviceLog.Error("Invalid token: %v", err)
            return nil, err
        }
        user := &User{
            ID:    claims.UserID,
            Email: claims.Email,
            Role:  claims.Role,
        }
        serviceLog.Info("Current user: %s", user.Email)
        return user, nil
    }

    // AdminService extends AuthService with admin-specific functionality.
    type AdminService struct {
        AuthService
        AdminUsers []string
    }

    // NewAdminService creates a new admin service.
    func NewAdminService() *AdminService {
        svc := &AdminService{
            AuthService: *NewAuthService(),
            AdminUsers:  []string{},
        }
        serviceLog.Info("AdminService created")
        return svc
    }

    // IsAdmin checks whether a user has admin privileges.
    func (a *AdminService) IsAdmin(userID string) bool {
        serviceLog.Debug("Checking admin status for: %s", userID)
        for _, id := range a.AdminUsers {
            if id == userID {
                return true
            }
        }
        return false
    }

    // PromoteToAdmin grants admin privileges to a user.
    func (a *AdminService) PromoteToAdmin(userID string) {
        serviceLog.Info("Promoting user to admin: %s", userID)
        a.AdminUsers = append(a.AdminUsers, userID)
    }
    """,
)

# ─── 5. internal/auth/middleware.go ───
w(
    "internal/auth/middleware.go",
    """\
    package auth

    import (
        "fmt"

        "pkg/logger"
    )

    var mwLog = logger.GetLogger("auth.middleware")

    // HandlerFunc represents an HTTP handler function.
    type HandlerFunc func(map[string]interface{}) (map[string]interface{}, error)

    // AuthRequired wraps a handler to require valid authentication.
    func AuthRequired(handler HandlerFunc) HandlerFunc {
        mwLog.Info("Wrapping handler with auth requirement")
        return func(request map[string]interface{}) (map[string]interface{}, error) {
            mwLog.Debug("Checking authentication")
            headers, ok := request["headers"].(map[string]string)
            if !ok {
                mwLog.Error("No headers in request")
                return nil, fmt.Errorf("missing headers")
            }
            token := ExtractToken(headers)
            if token == "" {
                mwLog.Warn("No token found in request")
                return nil, fmt.Errorf("authentication required")
            }
            claims, err := ValidateToken(token)
            if err != nil {
                mwLog.Error("Token validation failed: %v", err)
                return nil, fmt.Errorf("invalid token: %w", err)
            }
            request["user"] = claims
            mwLog.Info("Authenticated user: %s", claims.UserID)
            return handler(request)
        }
    }

    // RequireRole wraps a handler to require a specific role.
    func RequireRole(role string, handler HandlerFunc) HandlerFunc {
        mwLog.Info("Wrapping handler with role requirement: %s", role)
        return AuthRequired(func(request map[string]interface{}) (map[string]interface{}, error) {
            claims, ok := request["user"].(*TokenClaims)
            if !ok {
                mwLog.Error("No user claims in request")
                return nil, fmt.Errorf("no user claims")
            }
            if claims.Role != role {
                mwLog.Warn("User %s lacks role %s (has %s)", claims.UserID, role, claims.Role)
                return nil, fmt.Errorf("insufficient permissions: requires %s", role)
            }
            mwLog.Info("Role check passed for user: %s", claims.UserID)
            return handler(request)
        })
    }

    // RequireAnyRole wraps a handler to require one of several roles.
    func RequireAnyRole(roles []string, handler HandlerFunc) HandlerFunc {
        mwLog.Info("Wrapping handler with any-role requirement")
        return AuthRequired(func(request map[string]interface{}) (map[string]interface{}, error) {
            claims, ok := request["user"].(*TokenClaims)
            if !ok {
                return nil, fmt.Errorf("no user claims")
            }
            for _, r := range roles {
                if claims.Role == r {
                    return handler(request)
                }
            }
            mwLog.Warn("User %s lacks required roles", claims.UserID)
            return nil, fmt.Errorf("insufficient permissions")
        })
    }
    """,
)

# ─── 6. internal/utils/helpers.go ───
w(
    "internal/utils/helpers.go",
    """\
    package utils

    import (
        "fmt"
        "strings"
        "time"

        "pkg/logger"
    )

    var log = logger.GetLogger("utils.helpers")

    // ValidationResult holds the result of a validation check.
    type ValidationResult struct {
        Valid  bool
        Errors []string
    }

    // ValidateRequest checks that required fields are present in the request.
    func ValidateRequest(request map[string]interface{}, requiredFields []string) *ValidationResult {
        log.Info("Validating request with %d required fields", len(requiredFields))
        result := &ValidationResult{Valid: true, Errors: []string{}}
        for _, field := range requiredFields {
            if _, ok := request[field]; !ok {
                result.Valid = false
                result.Errors = append(result.Errors, fmt.Sprintf("missing field: %s", field))
                log.Warn("Missing required field: %s", field)
            }
        }
        if result.Valid {
            log.Info("Request validation passed")
        } else {
            log.Warn("Request validation failed with %d errors", len(result.Errors))
        }
        return result
    }

    // GenerateRequestID creates a unique request identifier.
    func GenerateRequestID() string {
        log.Debug("Generating request ID")
        id := fmt.Sprintf("req_%d", time.Now().UnixNano())
        log.Debug("Generated request ID: %s", id)
        return id
    }

    // SanitizeInput cleans user input by trimming and escaping special characters.
    func SanitizeInput(input string) string {
        log.Debug("Sanitizing input")
        sanitized := strings.TrimSpace(input)
        sanitized = strings.ReplaceAll(sanitized, "<", "&lt;")
        sanitized = strings.ReplaceAll(sanitized, ">", "&gt;")
        sanitized = strings.ReplaceAll(sanitized, "'", "&#39;")
        sanitized = strings.ReplaceAll(sanitized, "\"", "&quot;")
        log.Debug("Input sanitized")
        return sanitized
    }

    // PaginationResult holds paginated query results.
    type PaginationResult struct {
        Items      []interface{}
        Page       int
        PerPage    int
        Total      int
        TotalPages int
    }

    // Paginate takes a slice and returns a paginated subset.
    func Paginate(items []interface{}, page, perPage int) *PaginationResult {
        log.Info("Paginating %d items (page=%d, perPage=%d)", len(items), page, perPage)
        if page < 1 {
            page = 1
        }
        if perPage < 1 {
            perPage = 10
        }
        total := len(items)
        totalPages := (total + perPage - 1) / perPage
        start := (page - 1) * perPage
        end := start + perPage
        if start > total {
            start = total
        }
        if end > total {
            end = total
        }
        result := &PaginationResult{
            Items:      items[start:end],
            Page:       page,
            PerPage:    perPage,
            Total:      total,
            TotalPages: totalPages,
        }
        log.Info("Returning page %d of %d (%d items)", page, totalPages, len(result.Items))
        return result
    }
    """,
)

# ─── 7. internal/database/pool.go ───
w(
    "internal/database/pool.go",
    """\
    package database

    import (
        "fmt"
        "sync"

        "pkg/logger"
    )

    var poolLog = logger.GetLogger("database.pool")

    // ConnectionHandle wraps a database connection with metadata.
    type ConnectionHandle struct {
        ID       int
        InUse    bool
        Database string
    }

    // ConnectionPool manages a pool of database connections.
    type ConnectionPool struct {
        connections []*ConnectionHandle
        maxSize     int
        mu          sync.Mutex
    }

    // NewConnectionPool creates a pool with the specified max size.
    func NewConnectionPool(maxSize int) *ConnectionPool {
        poolLog.Info("Creating connection pool with max size: %d", maxSize)
        pool := &ConnectionPool{
            connections: make([]*ConnectionHandle, 0, maxSize),
            maxSize:     maxSize,
        }
        for i := 0; i < maxSize; i++ {
            pool.connections = append(pool.connections, &ConnectionHandle{
                ID:       i,
                InUse:    false,
                Database: "default",
            })
        }
        poolLog.Info("Connection pool initialized with %d connections", maxSize)
        return pool
    }

    // GetConnection acquires a connection from the pool.
    func (p *ConnectionPool) GetConnection() (*ConnectionHandle, error) {
        p.mu.Lock()
        defer p.mu.Unlock()
        poolLog.Debug("Requesting connection from pool")
        for _, conn := range p.connections {
            if !conn.InUse {
                conn.InUse = true
                poolLog.Info("Acquired connection #%d", conn.ID)
                return conn, nil
            }
        }
        poolLog.Error("No available connections in pool")
        return nil, fmt.Errorf("connection pool exhausted")
    }

    // ReleaseConnection returns a connection to the pool.
    func (p *ConnectionPool) ReleaseConnection(handle *ConnectionHandle) {
        p.mu.Lock()
        defer p.mu.Unlock()
        poolLog.Debug("Releasing connection #%d", handle.ID)
        handle.InUse = false
    }

    // ActiveCount returns the number of connections currently in use.
    func (p *ConnectionPool) ActiveCount() int {
        p.mu.Lock()
        defer p.mu.Unlock()
        count := 0
        for _, conn := range p.connections {
            if conn.InUse {
                count++
            }
        }
        poolLog.Debug("Active connections: %d", count)
        return count
    }

    // Shutdown closes all connections in the pool.
    func (p *ConnectionPool) Shutdown() {
        p.mu.Lock()
        defer p.mu.Unlock()
        poolLog.Info("Shutting down connection pool")
        for _, conn := range p.connections {
            conn.InUse = false
        }
        p.connections = p.connections[:0]
        poolLog.Info("Connection pool shut down")
    }
    """,
)

# ─── 8. internal/database/connection.go ───
w(
    "internal/database/connection.go",
    """\
    package database

    import (
        "fmt"

        "pkg/logger"
    )

    var connLog = logger.GetLogger("database.connection")

    // DatabaseConnection represents a single database connection.
    type DatabaseConnection struct {
        Host     string
        Port     int
        Database string
        User     string
        Pool     *ConnectionPool
    }

    // NewDatabaseConnection creates a new connection with default pool.
    func NewDatabaseConnection(host string, port int, database, user string) *DatabaseConnection {
        connLog.Info("Creating database connection: %s@%s:%d/%s", user, host, port, database)
        conn := &DatabaseConnection{
            Host:     host,
            Port:     port,
            Database: database,
            User:     user,
            Pool:     NewConnectionPool(10),
        }
        connLog.Info("Database connection established")
        return conn
    }

    // ExecuteQuery runs a query string and returns results.
    func (d *DatabaseConnection) ExecuteQuery(query string, params ...interface{}) ([]map[string]interface{}, error) {
        connLog.Info("Executing query: %s", query)
        handle, err := d.Pool.GetConnection()
        if err != nil {
            connLog.Error("Failed to get connection: %v", err)
            return nil, fmt.Errorf("query failed: %w", err)
        }
        defer d.Pool.ReleaseConnection(handle)
        connLog.Debug("Query executed on connection #%d", handle.ID)
        return []map[string]interface{}{}, nil
    }

    // FindByID retrieves a single record by its ID.
    func (d *DatabaseConnection) FindByID(table, id string) (map[string]interface{}, error) {
        connLog.Info("FindByID: table=%s, id=%s", table, id)
        query := fmt.Sprintf("SELECT * FROM %s WHERE id = $1", table)
        results, err := d.ExecuteQuery(query, id)
        if err != nil {
            return nil, err
        }
        if len(results) == 0 {
            connLog.Warn("No record found: table=%s, id=%s", table, id)
            return nil, fmt.Errorf("record not found")
        }
        return results[0], nil
    }

    // Insert adds a new record to the specified table.
    func (d *DatabaseConnection) Insert(table string, data map[string]interface{}) (string, error) {
        connLog.Info("Insert into table: %s", table)
        query := fmt.Sprintf("INSERT INTO %s VALUES ($1)", table)
        _, err := d.ExecuteQuery(query, data)
        if err != nil {
            connLog.Error("Insert failed: %v", err)
            return "", err
        }
        id := "generated_id"
        connLog.Info("Inserted record with id: %s", id)
        return id, nil
    }

    // Update modifies an existing record in the specified table.
    func (d *DatabaseConnection) Update(table, id string, data map[string]interface{}) error {
        connLog.Info("Update: table=%s, id=%s", table, id)
        query := fmt.Sprintf("UPDATE %s SET $1 WHERE id = $2", table)
        _, err := d.ExecuteQuery(query, data, id)
        if err != nil {
            connLog.Error("Update failed: %v", err)
            return err
        }
        connLog.Info("Updated record: %s", id)
        return nil
    }

    // Delete removes a record from the specified table.
    func (d *DatabaseConnection) Delete(table, id string) error {
        connLog.Info("Delete: table=%s, id=%s", table, id)
        query := fmt.Sprintf("DELETE FROM %s WHERE id = $1", table)
        _, err := d.ExecuteQuery(query, id)
        if err != nil {
            connLog.Error("Delete failed: %v", err)
            return err
        }
        connLog.Info("Deleted record: %s", id)
        return nil
    }
    """,
)

# ─── 9. internal/database/queries.go ───
w(
    "internal/database/queries.go",
    """\
    package database

    import (
        "pkg/logger"
    )

    var queryLog = logger.GetLogger("database.queries")

    // UserQueries provides database operations for users.
    type UserQueries struct {
        DB *DatabaseConnection
    }

    // FindByEmail looks up a user by email address.
    func (q *UserQueries) FindByEmail(email string) (map[string]interface{}, error) {
        queryLog.Info("Finding user by email: %s", email)
        results, err := q.DB.ExecuteQuery("SELECT * FROM users WHERE email = $1", email)
        if err != nil {
            return nil, err
        }
        if len(results) == 0 {
            queryLog.Warn("User not found by email: %s", email)
            return nil, nil
        }
        return results[0], nil
    }

    // FindActive returns all active users.
    func (q *UserQueries) FindActive() ([]map[string]interface{}, error) {
        queryLog.Info("Finding active users")
        return q.DB.ExecuteQuery("SELECT * FROM users WHERE active = true")
    }

    // SessionQueries provides database operations for sessions.
    type SessionQueries struct {
        DB *DatabaseConnection
    }

    // FindByUserID returns all sessions for a user.
    func (q *SessionQueries) FindByUserID(userID string) ([]map[string]interface{}, error) {
        queryLog.Info("Finding sessions for user: %s", userID)
        return q.DB.ExecuteQuery("SELECT * FROM sessions WHERE user_id = $1", userID)
    }

    // InvalidateAll removes all sessions for a user.
    func (q *SessionQueries) InvalidateAll(userID string) error {
        queryLog.Info("Invalidating all sessions for user: %s", userID)
        _, err := q.DB.ExecuteQuery("DELETE FROM sessions WHERE user_id = $1", userID)
        return err
    }

    // PaymentQueries provides database operations for payments.
    type PaymentQueries struct {
        DB *DatabaseConnection
    }

    // FindByTransactionID looks up a payment by transaction ID.
    func (q *PaymentQueries) FindByTransactionID(txnID string) (map[string]interface{}, error) {
        queryLog.Info("Finding payment by transaction ID: %s", txnID)
        results, err := q.DB.ExecuteQuery("SELECT * FROM payments WHERE txn_id = $1", txnID)
        if err != nil {
            return nil, err
        }
        if len(results) == 0 {
            queryLog.Warn("Payment not found: %s", txnID)
            return nil, nil
        }
        return results[0], nil
    }

    // FindByUserID returns all payments for a user.
    func (q *PaymentQueries) FindByUserID(userID string) ([]map[string]interface{}, error) {
        queryLog.Info("Finding payments for user: %s", userID)
        return q.DB.ExecuteQuery("SELECT * FROM payments WHERE user_id = $1", userID)
    }

    // SumByUserID calculates the total payment amount for a user.
    func (q *PaymentQueries) SumByUserID(userID string) (float64, error) {
        queryLog.Info("Summing payments for user: %s", userID)
        _, err := q.DB.ExecuteQuery("SELECT SUM(amount) FROM payments WHERE user_id = $1", userID)
        if err != nil {
            return 0, err
        }
        return 0.0, nil
    }
    """,
)

# ─── 10. internal/models/types.go ───
w(
    "internal/models/types.go",
    """\
    package models

    import (
        "pkg/logger"
    )

    var log = logger.GetLogger("models.types")

    // UserRole represents the role of a user in the system.
    type UserRole int

    const (
        RoleGuest UserRole = iota
        RoleUser
        RoleModerator
        RoleAdmin
        RoleSuperAdmin
    )

    // String returns the string representation of a UserRole.
    func (r UserRole) String() string {
        switch r {
        case RoleGuest:
            return "guest"
        case RoleUser:
            return "user"
        case RoleModerator:
            return "moderator"
        case RoleAdmin:
            return "admin"
        case RoleSuperAdmin:
            return "super_admin"
        default:
            log.Warn("Unknown role: %d", r)
            return "unknown"
        }
    }

    // SessionStatus represents the state of a session.
    type SessionStatus int

    const (
        SessionActive SessionStatus = iota
        SessionExpired
        SessionRevoked
        SessionSuspended
    )

    // String returns the string representation of a SessionStatus.
    func (s SessionStatus) String() string {
        switch s {
        case SessionActive:
            return "active"
        case SessionExpired:
            return "expired"
        case SessionRevoked:
            return "revoked"
        case SessionSuspended:
            return "suspended"
        default:
            log.Warn("Unknown session status: %d", s)
            return "unknown"
        }
    }

    // PaymentStatus represents the state of a payment.
    type PaymentStatus int

    const (
        PaymentPending PaymentStatus = iota
        PaymentProcessing
        PaymentCompleted
        PaymentFailed
        PaymentRefunded
        PaymentCancelled
    )

    // String returns the string representation of a PaymentStatus.
    func (p PaymentStatus) String() string {
        switch p {
        case PaymentPending:
            return "pending"
        case PaymentProcessing:
            return "processing"
        case PaymentCompleted:
            return "completed"
        case PaymentFailed:
            return "failed"
        case PaymentRefunded:
            return "refunded"
        case PaymentCancelled:
            return "cancelled"
        default:
            log.Warn("Unknown payment status: %d", p)
            return "unknown"
        }
    }
    """,
)

# ─── 11. internal/models/user.go ───
w(
    "internal/models/user.go",
    """\
    package models

    import (
        "fmt"

        "pkg/logger"
    )

    var userLog = logger.GetLogger("models.user")

    // User represents a user in the application.
    type User struct {
        ID        string
        Email     string
        Name      string
        Password  string
        Role      UserRole
        Active    bool
        CreatedAt string
        UpdatedAt string
        Metadata  map[string]interface{}
    }

    // NewUser creates a new user with default values.
    func NewUser(email, name, password string) *User {
        userLog.Info("Creating new user: %s", email)
        return &User{
            ID:       fmt.Sprintf("usr_%s", email),
            Email:    email,
            Name:     name,
            Password: password,
            Role:     RoleUser,
            Active:   true,
            Metadata: make(map[string]interface{}),
        }
    }

    // Validate checks that the user has valid field values.
    func (u *User) Validate() []string {
        userLog.Debug("Validating user: %s", u.Email)
        var errs []string
        if u.Email == "" {
            errs = append(errs, "email is required")
        }
        if u.Name == "" {
            errs = append(errs, "name is required")
        }
        if len(u.Password) < 8 {
            errs = append(errs, "password must be at least 8 characters")
        }
        if len(errs) > 0 {
            userLog.Warn("User validation failed with %d errors", len(errs))
        }
        return errs
    }

    // FullName returns the user's display name.
    func (u *User) FullName() string {
        return u.Name
    }

    // IsAdmin checks if the user has admin role.
    func (u *User) IsAdmin() bool {
        return u.Role == RoleAdmin || u.Role == RoleSuperAdmin
    }

    // Deactivate disables the user account.
    func (u *User) Deactivate() {
        userLog.Info("Deactivating user: %s", u.Email)
        u.Active = false
    }

    // SetMetadata sets a metadata key-value pair.
    func (u *User) SetMetadata(key string, value interface{}) {
        userLog.Debug("Setting metadata for user %s: %s", u.Email, key)
        u.Metadata[key] = value
    }
    """,
)

# ─── 12. internal/models/session.go ───
w(
    "internal/models/session.go",
    """\
    package models

    import (
        "fmt"

        "pkg/logger"
    )

    var sessionLog = logger.GetLogger("models.session")

    // Session represents an active user session.
    type Session struct {
        ID        string
        UserID    string
        Token     string
        Status    SessionStatus
        IPAddress string
        UserAgent string
        CreatedAt string
        ExpiresAt string
    }

    // NewSession creates a new session for a user.
    func NewSession(userID, token, ip, userAgent string) *Session {
        sessionLog.Info("Creating new session for user: %s", userID)
        return &Session{
            ID:        fmt.Sprintf("sess_%s", userID),
            UserID:    userID,
            Token:     token,
            Status:    SessionActive,
            IPAddress: ip,
            UserAgent: userAgent,
        }
    }

    // IsValid checks if the session is still active.
    func (s *Session) IsValid() bool {
        sessionLog.Debug("Checking session validity: %s", s.ID)
        return s.Status == SessionActive
    }

    // Expire marks the session as expired.
    func (s *Session) Expire() {
        sessionLog.Info("Expiring session: %s", s.ID)
        s.Status = SessionExpired
    }

    // Revoke marks the session as revoked.
    func (s *Session) Revoke() {
        sessionLog.Info("Revoking session: %s", s.ID)
        s.Status = SessionRevoked
    }

    // Suspend marks the session as suspended.
    func (s *Session) Suspend() {
        sessionLog.Info("Suspending session: %s", s.ID)
        s.Status = SessionSuspended
    }

    // Refresh extends the session expiry.
    func (s *Session) Refresh() {
        sessionLog.Info("Refreshing session: %s", s.ID)
        s.Status = SessionActive
    }
    """,
)

# ─── 13. internal/models/payment.go ───
w(
    "internal/models/payment.go",
    """\
    package models

    import (
        "fmt"

        "pkg/logger"
    )

    var paymentLog = logger.GetLogger("models.payment")

    // Payment represents a financial transaction.
    type Payment struct {
        ID            string
        UserID        string
        Amount        float64
        Currency      string
        Status        PaymentStatus
        TransactionID string
        Description   string
        CreatedAt     string
        UpdatedAt     string
        Metadata      map[string]interface{}
    }

    // NewPayment creates a new payment record.
    func NewPayment(userID string, amount float64, currency, description string) *Payment {
        paymentLog.Info("Creating payment: user=%s, amount=%.2f %s", userID, amount, currency)
        return &Payment{
            ID:          fmt.Sprintf("pay_%s", userID),
            UserID:      userID,
            Amount:      amount,
            Currency:    currency,
            Status:      PaymentPending,
            Description: description,
            Metadata:    make(map[string]interface{}),
        }
    }

    // Validate checks that the payment has valid field values.
    func (p *Payment) Validate() []string {
        paymentLog.Debug("Validating payment: %s", p.ID)
        var errs []string
        if p.Amount <= 0 {
            errs = append(errs, "amount must be positive")
        }
        if p.Currency == "" {
            errs = append(errs, "currency is required")
        }
        if p.UserID == "" {
            errs = append(errs, "user ID is required")
        }
        if len(errs) > 0 {
            paymentLog.Warn("Payment validation failed with %d errors", len(errs))
        }
        return errs
    }

    // Process moves the payment to processing state.
    func (p *Payment) Process() error {
        paymentLog.Info("Processing payment: %s", p.ID)
        if p.Status != PaymentPending {
            return fmt.Errorf("cannot process payment in %s state", p.Status.String())
        }
        p.Status = PaymentProcessing
        return nil
    }

    // Complete marks the payment as completed.
    func (p *Payment) Complete(txnID string) {
        paymentLog.Info("Completing payment: %s, txn=%s", p.ID, txnID)
        p.Status = PaymentCompleted
        p.TransactionID = txnID
    }

    // Fail marks the payment as failed.
    func (p *Payment) Fail(reason string) {
        paymentLog.Error("Payment failed: %s, reason=%s", p.ID, reason)
        p.Status = PaymentFailed
        p.Metadata["failure_reason"] = reason
    }

    // Refund marks the payment as refunded.
    func (p *Payment) Refund() error {
        paymentLog.Info("Refunding payment: %s", p.ID)
        if p.Status != PaymentCompleted {
            return fmt.Errorf("cannot refund payment in %s state", p.Status.String())
        }
        p.Status = PaymentRefunded
        return nil
    }
    """,
)

# ─── 14. internal/services/base.go ───
w(
    "internal/services/base.go",
    """\
    package services

    import (
        "pkg/logger"
    )

    var baseLog = logger.GetLogger("services.base")

    // Service defines the interface that all services must implement.
    type Service interface {
        Name() string
        Initialize() error
        Shutdown() error
    }

    // CacheableService extends Service with caching capabilities.
    type CacheableService interface {
        Service
        CacheKey(operation string, params ...interface{}) string
        InvalidateCache(pattern string) error
    }

    // AuditableService extends Service with audit logging.
    type AuditableService interface {
        Service
        AuditLog(action, userID string, details map[string]interface{}) error
    }

    // BaseServiceImpl provides common functionality for all services.
    type BaseServiceImpl struct {
        ServiceName    string
        ServiceVersion string
    }

    // Name returns the service name.
    func (b *BaseServiceImpl) Name() string {
        return b.ServiceName
    }

    // Initialize sets up the service.
    func (b *BaseServiceImpl) Initialize() error {
        baseLog.Info("Initializing service: %s v%s", b.ServiceName, b.ServiceVersion)
        return nil
    }

    // Shutdown tears down the service.
    func (b *BaseServiceImpl) Shutdown() error {
        baseLog.Info("Shutting down service: %s", b.ServiceName)
        return nil
    }
    """,
)

# ─── 15. internal/services/authentication.go ───
w(
    "internal/services/authentication.go",
    """\
    package services

    import (
        "fmt"

        "internal/auth"
        "internal/database"
        "pkg/logger"
    )

    var authLog = logger.GetLogger("services.authentication")

    // AuthenticationService handles user authentication workflows.
    type AuthenticationService struct {
        BaseServiceImpl
        AuthSvc *auth.AuthService
        DB      *database.DatabaseConnection
    }

    // NewAuthenticationService creates a new authentication service.
    func NewAuthenticationService(db *database.DatabaseConnection) *AuthenticationService {
        authLog.Info("Creating AuthenticationService")
        svc := &AuthenticationService{
            BaseServiceImpl: BaseServiceImpl{
                ServiceName:    "authentication",
                ServiceVersion: "1.0",
            },
            AuthSvc: auth.NewAuthService(),
            DB:      db,
        }
        svc.Initialize()
        return svc
    }

    // Authenticate performs the full authentication flow:
    // auth.Login -> GenerateToken -> ExecuteQuery -> GetConnection
    func (s *AuthenticationService) Authenticate(email, password string) (string, error) {
        authLog.Info("Authenticating user: %s", email)

        // Step 1: Login via auth service
        token, err := s.AuthSvc.Login(email, password)
        if err != nil {
            authLog.Error("Login failed for %s: %v", email, err)
            return "", fmt.Errorf("authentication failed: %w", err)
        }

        // Step 2: Generate a fresh token
        user := auth.User{ID: "user_1", Email: email}
        freshToken := auth.GenerateToken(user)

        // Step 3: Record login in database
        handle, err := s.DB.Pool.GetConnection()
        if err != nil {
            authLog.Error("DB connection failed: %v", err)
            return "", fmt.Errorf("database error: %w", err)
        }
        defer s.DB.Pool.ReleaseConnection(handle)

        _, err = s.DB.ExecuteQuery("INSERT INTO sessions (token, user) VALUES ($1, $2)", freshToken, email)
        if err != nil {
            authLog.Error("Session insert failed: %v", err)
            return "", fmt.Errorf("session error: %w", err)
        }

        authLog.Info("Authentication successful for: %s (token=%s, orig=%s)", email, freshToken, token)
        return freshToken, nil
    }

    // Logout terminates a user session.
    func (s *AuthenticationService) Logout(token string) error {
        authLog.Info("Logging out token")
        return s.AuthSvc.Logout(token)
    }

    // GetCurrentUser retrieves the authenticated user.
    func (s *AuthenticationService) GetCurrentUser(token string) (*auth.User, error) {
        authLog.Info("Getting current user")
        return s.AuthSvc.GetCurrentUser(token)
    }
    """,
)

# ─── 16. internal/services/user_service.go ───
w(
    "internal/services/user_service.go",
    """\
    package services

    import (
        "fmt"

        "internal/database"
        "internal/models"
        "pkg/logger"
    )

    var userSvcLog = logger.GetLogger("services.user")

    // UserService manages user CRUD operations.
    type UserService struct {
        BaseServiceImpl
        DB *database.DatabaseConnection
    }

    // NewUserService creates a new user service.
    func NewUserService(db *database.DatabaseConnection) *UserService {
        userSvcLog.Info("Creating UserService")
        return &UserService{
            BaseServiceImpl: BaseServiceImpl{
                ServiceName:    "user",
                ServiceVersion: "1.0",
            },
            DB: db,
        }
    }

    // Create adds a new user.
    func (s *UserService) Create(email, name, password string) (*models.User, error) {
        userSvcLog.Info("Creating user: %s", email)
        user := models.NewUser(email, name, password)
        errs := user.Validate()
        if len(errs) > 0 {
            userSvcLog.Warn("User validation failed: %v", errs)
            return nil, fmt.Errorf("validation failed: %v", errs)
        }
        _, err := s.DB.Insert("users", map[string]interface{}{"email": email, "name": name})
        if err != nil {
            userSvcLog.Error("Failed to insert user: %v", err)
            return nil, err
        }
        userSvcLog.Info("User created: %s", email)
        return user, nil
    }

    // FindByID looks up a user by ID.
    func (s *UserService) FindByID(id string) (*models.User, error) {
        userSvcLog.Info("Finding user by ID: %s", id)
        _, err := s.DB.FindByID("users", id)
        if err != nil {
            return nil, err
        }
        return &models.User{ID: id}, nil
    }

    // Update modifies an existing user.
    func (s *UserService) Update(id string, data map[string]interface{}) error {
        userSvcLog.Info("Updating user: %s", id)
        return s.DB.Update("users", id, data)
    }

    // Delete removes a user.
    func (s *UserService) Delete(id string) error {
        userSvcLog.Info("Deleting user: %s", id)
        return s.DB.Delete("users", id)
    }

    // Deactivate disables a user account.
    func (s *UserService) Deactivate(id string) error {
        userSvcLog.Info("Deactivating user: %s", id)
        return s.DB.Update("users", id, map[string]interface{}{"active": false})
    }
    """,
)

# ─── 17. internal/services/session_service.go ───
w(
    "internal/services/session_service.go",
    """\
    package services

    import (
        "internal/database"
        "internal/models"
        "pkg/logger"
    )

    var sessSvcLog = logger.GetLogger("services.session")

    // SessionService manages user sessions.
    type SessionService struct {
        BaseServiceImpl
        DB *database.DatabaseConnection
    }

    // NewSessionService creates a new session service.
    func NewSessionService(db *database.DatabaseConnection) *SessionService {
        sessSvcLog.Info("Creating SessionService")
        return &SessionService{
            BaseServiceImpl: BaseServiceImpl{
                ServiceName:    "session",
                ServiceVersion: "1.0",
            },
            DB: db,
        }
    }

    // Create starts a new session.
    func (s *SessionService) Create(userID, token, ip, userAgent string) *models.Session {
        sessSvcLog.Info("Creating session for user: %s", userID)
        session := models.NewSession(userID, token, ip, userAgent)
        s.DB.Insert("sessions", map[string]interface{}{
            "user_id": userID,
            "token":   token,
        })
        return session
    }

    // Invalidate revokes a session.
    func (s *SessionService) Invalidate(sessionID string) error {
        sessSvcLog.Info("Invalidating session: %s", sessionID)
        return s.DB.Delete("sessions", sessionID)
    }

    // InvalidateAll revokes all sessions for a user.
    func (s *SessionService) InvalidateAll(userID string) error {
        sessSvcLog.Info("Invalidating all sessions for user: %s", userID)
        _, err := s.DB.ExecuteQuery("DELETE FROM sessions WHERE user_id = $1", userID)
        return err
    }

    // FindByToken looks up a session by token.
    func (s *SessionService) FindByToken(token string) (*models.Session, error) {
        sessSvcLog.Info("Finding session by token")
        results, err := s.DB.ExecuteQuery("SELECT * FROM sessions WHERE token = $1", token)
        if err != nil {
            return nil, err
        }
        if len(results) == 0 {
            return nil, nil
        }
        return &models.Session{Token: token, Status: models.SessionActive}, nil
    }
    """,
)

# ─── 18. internal/services/payment/processor.go ───
w(
    "internal/services/payment/processor.go",
    """\
    package payment

    import (
        "fmt"

        "internal/database"
        "internal/models"
        "pkg/logger"
    )

    var procLog = logger.GetLogger("services.payment.processor")

    // PaymentProcessor handles payment processing workflows.
    type PaymentProcessor struct {
        DB      *database.DatabaseConnection
        Gateway *PaymentGateway
    }

    // NewPaymentProcessor creates a new processor with a gateway.
    func NewPaymentProcessor(db *database.DatabaseConnection) *PaymentProcessor {
        procLog.Info("Creating PaymentProcessor")
        return &PaymentProcessor{
            DB:      db,
            Gateway: NewPaymentGateway("stripe"),
        }
    }

    // Process handles the full payment lifecycle.
    func (p *PaymentProcessor) Process(payment *models.Payment) error {
        procLog.Info("Processing payment: %s (amount=%.2f %s)", payment.ID, payment.Amount, payment.Currency)

        errs := payment.Validate()
        if len(errs) > 0 {
            procLog.Error("Payment validation failed: %v", errs)
            return fmt.Errorf("validation failed: %v", errs)
        }

        if err := payment.Process(); err != nil {
            procLog.Error("Cannot start processing: %v", err)
            return err
        }

        txnID, err := p.Gateway.Charge(payment.Amount, payment.Currency)
        if err != nil {
            procLog.Error("Gateway charge failed: %v", err)
            payment.Fail(err.Error())
            return err
        }

        payment.Complete(txnID)
        _, err = p.DB.Insert("payments", map[string]interface{}{
            "id":     payment.ID,
            "amount": payment.Amount,
            "txn_id": txnID,
        })
        if err != nil {
            procLog.Error("Failed to record payment: %v", err)
            return err
        }

        procLog.Info("Payment processed successfully: %s -> %s", payment.ID, txnID)
        return nil
    }

    // Refund processes a refund for a completed payment.
    func (p *PaymentProcessor) Refund(paymentID string) error {
        procLog.Info("Refunding payment: %s", paymentID)
        _, err := p.DB.FindByID("payments", paymentID)
        if err != nil {
            procLog.Error("Payment not found: %v", err)
            return err
        }
        err = p.Gateway.Refund(paymentID)
        if err != nil {
            procLog.Error("Gateway refund failed: %v", err)
            return err
        }
        procLog.Info("Refund processed: %s", paymentID)
        return nil
    }

    // GetHistory retrieves payment history for a user.
    func (p *PaymentProcessor) GetHistory(userID string) ([]map[string]interface{}, error) {
        procLog.Info("Getting payment history for user: %s", userID)
        return p.DB.ExecuteQuery("SELECT * FROM payments WHERE user_id = $1 ORDER BY created_at DESC", userID)
    }
    """,
)

# ─── 19. internal/services/payment/gateway.go ───
w(
    "internal/services/payment/gateway.go",
    """\
    package payment

    import (
        "fmt"

        "pkg/logger"
    )

    var gwLog = logger.GetLogger("services.payment.gateway")

    // PaymentGateway communicates with an external payment provider.
    type PaymentGateway struct {
        Provider  string
        APIKey    string
        BaseURL   string
        Connected bool
    }

    // NewPaymentGateway creates a gateway for the specified provider.
    func NewPaymentGateway(provider string) *PaymentGateway {
        gwLog.Info("Creating PaymentGateway for provider: %s", provider)
        return &PaymentGateway{
            Provider:  provider,
            APIKey:    "test_key_placeholder",
            BaseURL:   fmt.Sprintf("https://api.%s.com/v1", provider),
            Connected: true,
        }
    }

    // Charge sends a charge request to the payment provider.
    func (g *PaymentGateway) Charge(amount float64, currency string) (string, error) {
        gwLog.Info("Charging %.2f %s via %s", amount, currency, g.Provider)
        if !g.Connected {
            gwLog.Error("Gateway not connected")
            return "", fmt.Errorf("gateway not connected")
        }
        if amount <= 0 {
            gwLog.Error("Invalid charge amount: %.2f", amount)
            return "", fmt.Errorf("invalid amount")
        }
        txnID := fmt.Sprintf("txn_%s_%.0f", g.Provider, amount*100)
        gwLog.Info("Charge successful: %s", txnID)
        return txnID, nil
    }

    // Refund sends a refund request to the payment provider.
    func (g *PaymentGateway) Refund(transactionID string) error {
        gwLog.Info("Refunding transaction: %s via %s", transactionID, g.Provider)
        if !g.Connected {
            gwLog.Error("Gateway not connected")
            return fmt.Errorf("gateway not connected")
        }
        gwLog.Info("Refund successful for: %s", transactionID)
        return nil
    }

    // GetBalance retrieves the current account balance.
    func (g *PaymentGateway) GetBalance() (float64, error) {
        gwLog.Info("Getting balance from %s", g.Provider)
        if !g.Connected {
            return 0, fmt.Errorf("gateway not connected")
        }
        return 10000.00, nil
    }

    // Disconnect closes the gateway connection.
    func (g *PaymentGateway) Disconnect() {
        gwLog.Info("Disconnecting from %s", g.Provider)
        g.Connected = false
    }
    """,
)

# ─── 20. internal/services/notification/manager.go ───
w(
    "internal/services/notification/manager.go",
    """\
    package notification

    import (
        "fmt"

        "pkg/logger"
    )

    var notifLog = logger.GetLogger("services.notification")

    // NotificationType represents the type of notification.
    type NotificationType int

    const (
        NotifEmail NotificationType = iota
        NotifSMS
        NotifPush
        NotifInApp
    )

    // Notification represents a message to be sent to a user.
    type Notification struct {
        ID      string
        UserID  string
        Type    NotificationType
        Title   string
        Body    string
        Sent    bool
    }

    // NotificationManager handles sending notifications through various channels.
    type NotificationManager struct {
        Queue    []*Notification
        Handlers map[NotificationType]func(*Notification) error
    }

    // NewNotificationManager creates a manager with default handlers.
    func NewNotificationManager() *NotificationManager {
        notifLog.Info("Creating NotificationManager")
        mgr := &NotificationManager{
            Queue:    make([]*Notification, 0),
            Handlers: make(map[NotificationType]func(*Notification) error),
        }
        mgr.Handlers[NotifEmail] = func(n *Notification) error {
            notifLog.Info("Sending email notification to user: %s", n.UserID)
            return nil
        }
        mgr.Handlers[NotifSMS] = func(n *Notification) error {
            notifLog.Info("Sending SMS notification to user: %s", n.UserID)
            return nil
        }
        mgr.Handlers[NotifPush] = func(n *Notification) error {
            notifLog.Info("Sending push notification to user: %s", n.UserID)
            return nil
        }
        mgr.Handlers[NotifInApp] = func(n *Notification) error {
            notifLog.Info("Sending in-app notification to user: %s", n.UserID)
            return nil
        }
        return mgr
    }

    // Send dispatches a notification through the appropriate channel.
    func (m *NotificationManager) Send(notif *Notification) error {
        notifLog.Info("Sending notification: type=%d, user=%s", notif.Type, notif.UserID)
        handler, ok := m.Handlers[notif.Type]
        if !ok {
            notifLog.Error("No handler for notification type: %d", notif.Type)
            return fmt.Errorf("unsupported notification type: %d", notif.Type)
        }
        if err := handler(notif); err != nil {
            notifLog.Error("Failed to send notification: %v", err)
            return err
        }
        notif.Sent = true
        notifLog.Info("Notification sent successfully: %s", notif.ID)
        return nil
    }

    // Enqueue adds a notification to the processing queue.
    func (m *NotificationManager) Enqueue(notif *Notification) {
        notifLog.Info("Enqueuing notification for user: %s", notif.UserID)
        m.Queue = append(m.Queue, notif)
    }

    // ProcessQueue sends all queued notifications.
    func (m *NotificationManager) ProcessQueue() int {
        notifLog.Info("Processing notification queue (%d items)", len(m.Queue))
        sent := 0
        for _, notif := range m.Queue {
            if err := m.Send(notif); err == nil {
                sent++
            }
        }
        m.Queue = m.Queue[:0]
        notifLog.Info("Processed queue: %d sent", sent)
        return sent
    }
    """,
)

# ─── 21. internal/services/email/sender.go ───
w(
    "internal/services/email/sender.go",
    """\
    package email

    import (
        "fmt"

        "pkg/logger"
    )

    var emailLog = logger.GetLogger("services.email")

    // EmailMessage represents an email to be sent.
    type EmailMessage struct {
        To      string
        From    string
        Subject string
        Body    string
        HTML    bool
    }

    // EmailSender sends emails through a configured SMTP provider.
    type EmailSender struct {
        Host     string
        Port     int
        Username string
        FromAddr string
    }

    // NewEmailSender creates a new email sender with configuration.
    func NewEmailSender(host string, port int, username, fromAddr string) *EmailSender {
        emailLog.Info("Creating EmailSender: host=%s, port=%d", host, port)
        return &EmailSender{
            Host:     host,
            Port:     port,
            Username: username,
            FromAddr: fromAddr,
        }
    }

    // Send dispatches an email message.
    func (s *EmailSender) Send(msg *EmailMessage) error {
        emailLog.Info("Sending email to: %s, subject: %s", msg.To, msg.Subject)
        if msg.To == "" {
            emailLog.Error("Recipient address is empty")
            return fmt.Errorf("recipient address required")
        }
        if msg.Subject == "" {
            emailLog.Warn("Email has no subject")
        }
        msg.From = s.FromAddr
        emailLog.Info("Email sent successfully to: %s", msg.To)
        return nil
    }

    // SendBulk sends an email to multiple recipients.
    func (s *EmailSender) SendBulk(recipients []string, subject, body string) (int, error) {
        emailLog.Info("Sending bulk email to %d recipients", len(recipients))
        sent := 0
        for _, to := range recipients {
            msg := &EmailMessage{To: to, Subject: subject, Body: body}
            if err := s.Send(msg); err != nil {
                emailLog.Error("Failed to send to %s: %v", to, err)
                continue
            }
            sent++
        }
        emailLog.Info("Bulk send complete: %d/%d sent", sent, len(recipients))
        return sent, nil
    }

    // SendWelcomeEmail sends a welcome email to a new user.
    func (s *EmailSender) SendWelcomeEmail(email, name string) error {
        emailLog.Info("Sending welcome email to: %s", email)
        msg := &EmailMessage{
            To:      email,
            Subject: fmt.Sprintf("Welcome, %s!", name),
            Body:    fmt.Sprintf("Hello %s, welcome to our platform!", name),
            HTML:    true,
        }
        return s.Send(msg)
    }

    // SendPasswordReset sends a password reset email.
    func (s *EmailSender) SendPasswordReset(email, resetToken string) error {
        emailLog.Info("Sending password reset to: %s", email)
        msg := &EmailMessage{
            To:      email,
            Subject: "Password Reset Request",
            Body:    fmt.Sprintf("Reset your password using token: %s", resetToken),
            HTML:    true,
        }
        return s.Send(msg)
    }
    """,
)

# ─── 22. internal/events/dispatcher.go ───
w(
    "internal/events/dispatcher.go",
    """\
    package events

    import (
        "fmt"

        "pkg/logger"
    )

    var dispLog = logger.GetLogger("events.dispatcher")

    // Event represents an application event.
    type Event struct {
        Name    string
        Payload map[string]interface{}
        Source  string
    }

    // NewEvent creates a new event with the given name and payload.
    func NewEvent(name, source string, payload map[string]interface{}) *Event {
        dispLog.Debug("Creating event: %s from %s", name, source)
        return &Event{
            Name:    name,
            Payload: payload,
            Source:  source,
        }
    }

    // EventHandler is a function that handles an event.
    type EventHandler func(*Event) error

    // EventDispatcher manages event listeners and dispatching.
    type EventDispatcher struct {
        listeners map[string][]EventHandler
    }

    // NewEventDispatcher creates a new dispatcher.
    func NewEventDispatcher() *EventDispatcher {
        dispLog.Info("Creating EventDispatcher")
        return &EventDispatcher{
            listeners: make(map[string][]EventHandler),
        }
    }

    // On registers an event handler for the given event name.
    func (d *EventDispatcher) On(eventName string, handler EventHandler) {
        dispLog.Info("Registering handler for event: %s", eventName)
        d.listeners[eventName] = append(d.listeners[eventName], handler)
    }

    // Dispatch triggers all handlers registered for the event.
    func (d *EventDispatcher) Dispatch(event *Event) error {
        dispLog.Info("Dispatching event: %s", event.Name)
        handlers, ok := d.listeners[event.Name]
        if !ok {
            dispLog.Warn("No handlers for event: %s", event.Name)
            return nil
        }
        for i, handler := range handlers {
            dispLog.Debug("Calling handler %d for event: %s", i, event.Name)
            if err := handler(event); err != nil {
                dispLog.Error("Handler %d failed for event %s: %v", i, event.Name, err)
                return fmt.Errorf("handler failed: %w", err)
            }
        }
        dispLog.Info("Event dispatched: %s (%d handlers)", event.Name, len(handlers))
        return nil
    }

    // RemoveAll removes all handlers for an event.
    func (d *EventDispatcher) RemoveAll(eventName string) {
        dispLog.Info("Removing all handlers for event: %s", eventName)
        delete(d.listeners, eventName)
    }

    // HasListeners checks if an event has any handlers.
    func (d *EventDispatcher) HasListeners(eventName string) bool {
        handlers, ok := d.listeners[eventName]
        return ok && len(handlers) > 0
    }
    """,
)

# ─── 23. internal/events/handlers.go ───
w(
    "internal/events/handlers.go",
    """\
    package events

    import (
        "pkg/logger"
    )

    var handlerLog = logger.GetLogger("events.handlers")

    // UserCreatedHandler handles user creation events.
    func UserCreatedHandler(event *Event) error {
        handlerLog.Info("Handling user.created event")
        email, _ := event.Payload["email"].(string)
        handlerLog.Info("New user created: %s", email)
        return nil
    }

    // UserDeletedHandler handles user deletion events.
    func UserDeletedHandler(event *Event) error {
        handlerLog.Info("Handling user.deleted event")
        userID, _ := event.Payload["user_id"].(string)
        handlerLog.Info("User deleted: %s", userID)
        return nil
    }

    // PaymentCompletedHandler handles payment completion events.
    func PaymentCompletedHandler(event *Event) error {
        handlerLog.Info("Handling payment.completed event")
        txnID, _ := event.Payload["txn_id"].(string)
        amount, _ := event.Payload["amount"].(float64)
        handlerLog.Info("Payment completed: txn=%s, amount=%.2f", txnID, amount)
        return nil
    }

    // PaymentFailedHandler handles payment failure events.
    func PaymentFailedHandler(event *Event) error {
        handlerLog.Info("Handling payment.failed event")
        reason, _ := event.Payload["reason"].(string)
        handlerLog.Warn("Payment failed: %s", reason)
        return nil
    }

    // SessionExpiredHandler handles session expiry events.
    func SessionExpiredHandler(event *Event) error {
        handlerLog.Info("Handling session.expired event")
        sessionID, _ := event.Payload["session_id"].(string)
        handlerLog.Info("Session expired: %s", sessionID)
        return nil
    }

    // RegisterDefaultHandlers sets up the default event handlers.
    func RegisterDefaultHandlers(dispatcher *EventDispatcher) {
        handlerLog.Info("Registering default event handlers")
        dispatcher.On("user.created", UserCreatedHandler)
        dispatcher.On("user.deleted", UserDeletedHandler)
        dispatcher.On("payment.completed", PaymentCompletedHandler)
        dispatcher.On("payment.failed", PaymentFailedHandler)
        dispatcher.On("session.expired", SessionExpiredHandler)
        handlerLog.Info("Default handlers registered")
    }
    """,
)

# ─── 24. internal/cache/cache.go ───
w(
    "internal/cache/cache.go",
    """\
    package cache

    import (
        "pkg/logger"
    )

    var cacheLog = logger.GetLogger("cache")

    // Cache defines the interface for cache implementations.
    type Cache interface {
        Get(key string) (interface{}, bool)
        Set(key string, value interface{}, ttl int) error
        Delete(key string) error
        Clear() error
        Has(key string) bool
    }

    // CacheEntry represents a single cached item.
    type CacheEntry struct {
        Key       string
        Value     interface{}
        TTL       int
        CreatedAt int64
    }

    // LogCacheOperation logs a cache operation.
    func LogCacheOperation(op, key string, hit bool) {
        if hit {
            cacheLog.Debug("Cache %s HIT: %s", op, key)
        } else {
            cacheLog.Debug("Cache %s MISS: %s", op, key)
        }
    }
    """,
)

# ─── 25. internal/cache/redis.go ───
w(
    "internal/cache/redis.go",
    """\
    package cache

    import (
        "fmt"

        "pkg/logger"
    )

    var redisLog = logger.GetLogger("cache.redis")

    // RedisCache implements Cache using Redis as the backend.
    type RedisCache struct {
        Host     string
        Port     int
        Password string
        DB       int
        store    map[string]*CacheEntry
    }

    // NewRedisCache creates a new Redis-backed cache.
    func NewRedisCache(host string, port int, password string, db int) *RedisCache {
        redisLog.Info("Creating RedisCache: %s:%d (db=%d)", host, port, db)
        return &RedisCache{
            Host:     host,
            Port:     port,
            Password: password,
            DB:       db,
            store:    make(map[string]*CacheEntry),
        }
    }

    // Get retrieves a value from the cache.
    func (r *RedisCache) Get(key string) (interface{}, bool) {
        redisLog.Debug("GET %s", key)
        entry, ok := r.store[key]
        LogCacheOperation("GET", key, ok)
        if !ok {
            return nil, false
        }
        return entry.Value, true
    }

    // Set stores a value in the cache with a TTL.
    func (r *RedisCache) Set(key string, value interface{}, ttl int) error {
        redisLog.Debug("SET %s (ttl=%d)", key, ttl)
        r.store[key] = &CacheEntry{Key: key, Value: value, TTL: ttl}
        return nil
    }

    // Delete removes a key from the cache.
    func (r *RedisCache) Delete(key string) error {
        redisLog.Debug("DEL %s", key)
        delete(r.store, key)
        return nil
    }

    // Clear removes all keys from the cache.
    func (r *RedisCache) Clear() error {
        redisLog.Info("CLEAR all keys")
        r.store = make(map[string]*CacheEntry)
        return nil
    }

    // Has checks if a key exists in the cache.
    func (r *RedisCache) Has(key string) bool {
        _, ok := r.store[key]
        return ok
    }

    // ConnectionString returns the Redis connection URI.
    func (r *RedisCache) ConnectionString() string {
        return fmt.Sprintf("redis://:%s@%s:%d/%d", r.Password, r.Host, r.Port, r.DB)
    }
    """,
)

# ─── 26. internal/cache/memory.go ───
w(
    "internal/cache/memory.go",
    """\
    package cache

    import (
        "sync"

        "pkg/logger"
    )

    var memLog = logger.GetLogger("cache.memory")

    // MemoryCache implements Cache using in-memory storage.
    type MemoryCache struct {
        store map[string]*CacheEntry
        mu    sync.RWMutex
    }

    // NewMemoryCache creates a new in-memory cache.
    func NewMemoryCache() *MemoryCache {
        memLog.Info("Creating MemoryCache")
        return &MemoryCache{
            store: make(map[string]*CacheEntry),
        }
    }

    // Get retrieves a value from memory.
    func (m *MemoryCache) Get(key string) (interface{}, bool) {
        m.mu.RLock()
        defer m.mu.RUnlock()
        memLog.Debug("GET %s", key)
        entry, ok := m.store[key]
        LogCacheOperation("GET", key, ok)
        if !ok {
            return nil, false
        }
        return entry.Value, true
    }

    // Set stores a value in memory.
    func (m *MemoryCache) Set(key string, value interface{}, ttl int) error {
        m.mu.Lock()
        defer m.mu.Unlock()
        memLog.Debug("SET %s (ttl=%d)", key, ttl)
        m.store[key] = &CacheEntry{Key: key, Value: value, TTL: ttl}
        return nil
    }

    // Delete removes a key from memory.
    func (m *MemoryCache) Delete(key string) error {
        m.mu.Lock()
        defer m.mu.Unlock()
        memLog.Debug("DEL %s", key)
        delete(m.store, key)
        return nil
    }

    // Clear removes all keys from memory.
    func (m *MemoryCache) Clear() error {
        m.mu.Lock()
        defer m.mu.Unlock()
        memLog.Info("CLEAR all keys")
        m.store = make(map[string]*CacheEntry)
        return nil
    }

    // Has checks if a key exists in memory.
    func (m *MemoryCache) Has(key string) bool {
        m.mu.RLock()
        defer m.mu.RUnlock()
        _, ok := m.store[key]
        return ok
    }

    // Size returns the number of entries in the cache.
    func (m *MemoryCache) Size() int {
        m.mu.RLock()
        defer m.mu.RUnlock()
        return len(m.store)
    }
    """,
)

# ─── 27. internal/validators/common.go ───
w(
    "internal/validators/common.go",
    """\
    package validators

    import (
        "regexp"
        "strings"

        "pkg/logger"
    )

    var validLog = logger.GetLogger("validators.common")

    // ValidationError represents a field-specific validation error.
    type ValidationError struct {
        Field   string
        Message string
    }

    // CommonValidators provides reusable validation functions.
    type CommonValidators struct{}

    // ValidateEmail checks if an email address is valid.
    func (v *CommonValidators) ValidateEmail(email string) *ValidationError {
        validLog.Debug("Validating email: %s", email)
        pattern := regexp.MustCompile(`^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}$`)
        if !pattern.MatchString(email) {
            validLog.Warn("Invalid email: %s", email)
            return &ValidationError{Field: "email", Message: "invalid email format"}
        }
        return nil
    }

    // ValidateRequired checks that a value is not empty.
    func (v *CommonValidators) ValidateRequired(field, value string) *ValidationError {
        validLog.Debug("Validating required field: %s", field)
        if strings.TrimSpace(value) == "" {
            validLog.Warn("Required field empty: %s", field)
            return &ValidationError{Field: field, Message: "field is required"}
        }
        return nil
    }

    // ValidateMinLength checks that a string meets the minimum length.
    func (v *CommonValidators) ValidateMinLength(field, value string, min int) *ValidationError {
        validLog.Debug("Validating min length for %s: %d", field, min)
        if len(value) < min {
            validLog.Warn("Field %s too short: %d < %d", field, len(value), min)
            return &ValidationError{Field: field, Message: "value too short"}
        }
        return nil
    }

    // ValidateMaxLength checks that a string does not exceed the maximum length.
    func (v *CommonValidators) ValidateMaxLength(field, value string, max int) *ValidationError {
        validLog.Debug("Validating max length for %s: %d", field, max)
        if len(value) > max {
            validLog.Warn("Field %s too long: %d > %d", field, len(value), max)
            return &ValidationError{Field: field, Message: "value too long"}
        }
        return nil
    }

    // ValidateRange checks that a number is within a range.
    func (v *CommonValidators) ValidateRange(field string, value, min, max float64) *ValidationError {
        validLog.Debug("Validating range for %s: %.2f in [%.2f, %.2f]", field, value, min, max)
        if value < min || value > max {
            validLog.Warn("Field %s out of range: %.2f", field, value)
            return &ValidationError{Field: field, Message: "value out of range"}
        }
        return nil
    }
    """,
)

# ─── 28. internal/validators/user_validator.go ───
w(
    "internal/validators/user_validator.go",
    """\
    package validators

    import (
        "pkg/logger"
    )

    var userValLog = logger.GetLogger("validators.user")

    // UserValidator validates user-related data.
    type UserValidator struct {
        CommonValidators
    }

    // NewUserValidator creates a new user validator.
    func NewUserValidator() *UserValidator {
        userValLog.Info("Creating UserValidator")
        return &UserValidator{}
    }

    // Validate checks all user fields.
    func (v *UserValidator) Validate(data map[string]string) []*ValidationError {
        userValLog.Info("Validating user data")
        var errs []*ValidationError

        if err := v.ValidateRequired("email", data["email"]); err != nil {
            errs = append(errs, err)
        } else if err := v.ValidateEmail(data["email"]); err != nil {
            errs = append(errs, err)
        }

        if err := v.ValidateRequired("name", data["name"]); err != nil {
            errs = append(errs, err)
        } else if err := v.ValidateMinLength("name", data["name"], 2); err != nil {
            errs = append(errs, err)
        }

        if err := v.ValidateRequired("password", data["password"]); err != nil {
            errs = append(errs, err)
        } else if err := v.ValidateMinLength("password", data["password"], 8); err != nil {
            errs = append(errs, err)
        }

        if len(errs) > 0 {
            userValLog.Warn("User validation failed: %d errors", len(errs))
        } else {
            userValLog.Info("User validation passed")
        }
        return errs
    }

    // ValidateUpdate checks fields for a user update.
    func (v *UserValidator) ValidateUpdate(data map[string]string) []*ValidationError {
        userValLog.Info("Validating user update")
        var errs []*ValidationError

        if name, ok := data["name"]; ok {
            if err := v.ValidateMinLength("name", name, 2); err != nil {
                errs = append(errs, err)
            }
        }

        if email, ok := data["email"]; ok {
            if err := v.ValidateEmail(email); err != nil {
                errs = append(errs, err)
            }
        }

        return errs
    }
    """,
)

# ─── 29. internal/validators/payment_validator.go ───
w(
    "internal/validators/payment_validator.go",
    """\
    package validators

    import (
        "strconv"

        "pkg/logger"
    )

    var payValLog = logger.GetLogger("validators.payment")

    // PaymentValidator validates payment-related data.
    type PaymentValidator struct {
        CommonValidators
    }

    // NewPaymentValidator creates a new payment validator.
    func NewPaymentValidator() *PaymentValidator {
        payValLog.Info("Creating PaymentValidator")
        return &PaymentValidator{}
    }

    // Validate checks all payment fields.
    func (v *PaymentValidator) Validate(data map[string]string) []*ValidationError {
        payValLog.Info("Validating payment data")
        var errs []*ValidationError

        if err := v.ValidateRequired("amount", data["amount"]); err != nil {
            errs = append(errs, err)
        } else {
            amount, parseErr := strconv.ParseFloat(data["amount"], 64)
            if parseErr != nil {
                errs = append(errs, &ValidationError{Field: "amount", Message: "must be a number"})
            } else if err := v.ValidateRange("amount", amount, 0.01, 999999.99); err != nil {
                errs = append(errs, err)
            }
        }

        if err := v.ValidateRequired("currency", data["currency"]); err != nil {
            errs = append(errs, err)
        } else if err := v.ValidateMaxLength("currency", data["currency"], 3); err != nil {
            errs = append(errs, err)
        }

        if err := v.ValidateRequired("user_id", data["user_id"]); err != nil {
            errs = append(errs, err)
        }

        if len(errs) > 0 {
            payValLog.Warn("Payment validation failed: %d errors", len(errs))
        } else {
            payValLog.Info("Payment validation passed")
        }
        return errs
    }

    // ValidateRefund checks refund-specific fields.
    func (v *PaymentValidator) ValidateRefund(data map[string]string) []*ValidationError {
        payValLog.Info("Validating refund data")
        var errs []*ValidationError

        if err := v.ValidateRequired("payment_id", data["payment_id"]); err != nil {
            errs = append(errs, err)
        }
        if err := v.ValidateRequired("reason", data["reason"]); err != nil {
            errs = append(errs, err)
        }

        return errs
    }
    """,
)

# ─── 30. internal/middleware/auth.go ───
w(
    "internal/middleware/auth.go",
    """\
    package middleware

    import (
        "fmt"

        "internal/auth"
        "pkg/logger"
    )

    var authMwLog = logger.GetLogger("middleware.auth")

    // Request represents an HTTP request.
    type Request struct {
        Headers map[string]string
        Body    map[string]interface{}
        User    *auth.TokenClaims
        Params  map[string]string
    }

    // Response represents an HTTP response.
    type Response struct {
        Status int
        Body   map[string]interface{}
    }

    // Handler is a middleware-compatible handler function.
    type Handler func(*Request) *Response

    // AuthMiddleware verifies authentication on incoming requests.
    func AuthMiddleware(next Handler) Handler {
        authMwLog.Info("Installing auth middleware")
        return func(req *Request) *Response {
            authMwLog.Debug("Checking authentication")
            token := auth.ExtractToken(req.Headers)
            if token == "" {
                authMwLog.Warn("No token found")
                return &Response{Status: 401, Body: map[string]interface{}{"error": "unauthorized"}}
            }
            claims, err := auth.ValidateToken(token)
            if err != nil {
                authMwLog.Error("Token validation failed: %v", err)
                return &Response{Status: 401, Body: map[string]interface{}{"error": fmt.Sprintf("invalid token: %v", err)}}
            }
            req.User = claims
            authMwLog.Info("Authenticated: %s", claims.UserID)
            return next(req)
        }
    }

    // AdminMiddleware requires admin role.
    func AdminMiddleware(next Handler) Handler {
        authMwLog.Info("Installing admin middleware")
        return AuthMiddleware(func(req *Request) *Response {
            if req.User.Role != "admin" {
                authMwLog.Warn("Non-admin access attempt by: %s", req.User.UserID)
                return &Response{Status: 403, Body: map[string]interface{}{"error": "forbidden"}}
            }
            return next(req)
        })
    }
    """,
)

# ─── 31. internal/middleware/ratelimit.go ───
w(
    "internal/middleware/ratelimit.go",
    """\
    package middleware

    import (
        "sync"

        "pkg/logger"
    )

    var rlLog = logger.GetLogger("middleware.ratelimit")

    // RateLimiter tracks request rates per client.
    type RateLimiter struct {
        Requests map[string]int
        Limit    int
        mu       sync.Mutex
    }

    // NewRateLimiter creates a rate limiter with the specified limit.
    func NewRateLimiter(limit int) *RateLimiter {
        rlLog.Info("Creating RateLimiter with limit: %d", limit)
        return &RateLimiter{
            Requests: make(map[string]int),
            Limit:    limit,
        }
    }

    // RateLimitMiddleware limits request rates per client IP.
    func RateLimitMiddleware(limiter *RateLimiter, next Handler) Handler {
        rlLog.Info("Installing rate limit middleware")
        return func(req *Request) *Response {
            ip := req.Headers["X-Forwarded-For"]
            if ip == "" {
                ip = "unknown"
            }
            rlLog.Debug("Rate check for IP: %s", ip)

            limiter.mu.Lock()
            limiter.Requests[ip]++
            count := limiter.Requests[ip]
            limiter.mu.Unlock()

            if count > limiter.Limit {
                rlLog.Warn("Rate limit exceeded for IP: %s (%d requests)", ip, count)
                return &Response{
                    Status: 429,
                    Body:   map[string]interface{}{"error": "rate limit exceeded"},
                }
            }
            rlLog.Debug("Rate check passed for IP: %s (%d/%d)", ip, count, limiter.Limit)
            return next(req)
        }
    }

    // Reset clears all rate limit counters.
    func (r *RateLimiter) Reset() {
        r.mu.Lock()
        defer r.mu.Unlock()
        rlLog.Info("Resetting rate limiter")
        r.Requests = make(map[string]int)
    }
    """,
)

# ─── 32. internal/middleware/cors.go ───
w(
    "internal/middleware/cors.go",
    """\
    package middleware

    import (
        "pkg/logger"
    )

    var corsLog = logger.GetLogger("middleware.cors")

    // CorsConfig defines CORS configuration.
    type CorsConfig struct {
        AllowOrigins []string
        AllowMethods []string
        AllowHeaders []string
        MaxAge       int
    }

    // DefaultCorsConfig returns a permissive CORS configuration.
    func DefaultCorsConfig() *CorsConfig {
        corsLog.Info("Loading default CORS config")
        return &CorsConfig{
            AllowOrigins: []string{"*"},
            AllowMethods: []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
            AllowHeaders: []string{"Content-Type", "Authorization", "X-Request-ID"},
            MaxAge:       86400,
        }
    }

    // CorsMiddleware adds CORS headers to responses.
    func CorsMiddleware(config *CorsConfig, next Handler) Handler {
        corsLog.Info("Installing CORS middleware")
        return func(req *Request) *Response {
            corsLog.Debug("Processing CORS for request")
            origin := req.Headers["Origin"]
            allowed := false
            for _, o := range config.AllowOrigins {
                if o == "*" || o == origin {
                    allowed = true
                    break
                }
            }
            if !allowed {
                corsLog.Warn("CORS blocked origin: %s", origin)
                return &Response{
                    Status: 403,
                    Body:   map[string]interface{}{"error": "origin not allowed"},
                }
            }
            corsLog.Debug("CORS allowed for origin: %s", origin)
            resp := next(req)
            if resp.Body == nil {
                resp.Body = make(map[string]interface{})
            }
            resp.Body["Access-Control-Allow-Origin"] = origin
            return resp
        }
    }
    """,
)

# ─── 33. internal/middleware/logging.go ───
w(
    "internal/middleware/logging.go",
    """\
    package middleware

    import (
        "time"

        "pkg/logger"
    )

    var reqLog = logger.GetLogger("middleware.logging")

    // LoggingMiddleware logs all incoming requests and their response times.
    func LoggingMiddleware(next Handler) Handler {
        reqLog.Info("Installing logging middleware")
        return func(req *Request) *Response {
            start := time.Now()
            method := req.Headers["Method"]
            path := req.Headers["Path"]
            requestID := req.Headers["X-Request-ID"]

            reqLog.Info("Request started: %s %s (id=%s)", method, path, requestID)

            resp := next(req)

            duration := time.Since(start)
            reqLog.Info("Request completed: %s %s -> %d (%.2fms)",
                method, path, resp.Status, float64(duration.Microseconds())/1000.0)

            if resp.Status >= 400 {
                reqLog.Warn("Error response: %s %s -> %d", method, path, resp.Status)
            }

            return resp
        }
    }

    // RequestTimingMiddleware adds timing headers to responses.
    func RequestTimingMiddleware(next Handler) Handler {
        reqLog.Info("Installing timing middleware")
        return func(req *Request) *Response {
            start := time.Now()
            resp := next(req)
            duration := time.Since(start)
            if resp.Body == nil {
                resp.Body = make(map[string]interface{})
            }
            resp.Body["X-Response-Time"] = duration.String()
            return resp
        }
    }
    """,
)

# ─── 34. internal/routes/auth_routes.go ───
w(
    "internal/routes/auth_routes.go",
    """\
    package routes

    import (
        "internal/auth"
        "internal/services"
        "internal/database"
        "pkg/logger"
    )

    var authRouteLog = logger.GetLogger("routes.auth")

    // LoginHandler handles login requests.
    func LoginHandler(request map[string]interface{}) (map[string]interface{}, error) {
        authRouteLog.Info("Login request received")

        email, _ := request["email"].(string)
        password, _ := request["password"].(string)

        db := database.NewDatabaseConnection("localhost", 5432, "app", "user")
        authSvc := services.NewAuthenticationService(db)

        token, err := authSvc.Authenticate(email, password)
        if err != nil {
            authRouteLog.Error("Login failed: %v", err)
            return map[string]interface{}{"error": err.Error()}, err
        }

        authRouteLog.Info("Login successful for: %s", email)
        return map[string]interface{}{
            "token": token,
            "user":  email,
        }, nil
    }

    // LogoutHandler handles logout requests.
    func LogoutHandler(request map[string]interface{}) (map[string]interface{}, error) {
        authRouteLog.Info("Logout request received")
        headers, _ := request["headers"].(map[string]string)
        token := auth.ExtractToken(headers)
        err := auth.RevokeToken(token)
        if err != nil {
            authRouteLog.Error("Logout failed: %v", err)
            return nil, err
        }
        authRouteLog.Info("Logout successful")
        return map[string]interface{}{"status": "logged_out"}, nil
    }

    // RefreshHandler handles token refresh requests.
    func RefreshHandler(request map[string]interface{}) (map[string]interface{}, error) {
        authRouteLog.Info("Token refresh request")
        headers, _ := request["headers"].(map[string]string)
        oldToken := auth.ExtractToken(headers)
        newToken, err := auth.RefreshToken(oldToken)
        if err != nil {
            authRouteLog.Error("Token refresh failed: %v", err)
            return nil, err
        }
        return map[string]interface{}{"token": newToken}, nil
    }
    """,
)

# ─── 35. internal/routes/payment_routes.go ───
w(
    "internal/routes/payment_routes.go",
    """\
    package routes

    import (
        "fmt"

        "internal/database"
        "internal/models"
        "internal/services/payment"
        "pkg/logger"
    )

    var payRouteLog = logger.GetLogger("routes.payment")

    // PaymentHandler handles payment-related requests.
    func PaymentHandler(request map[string]interface{}) (map[string]interface{}, error) {
        payRouteLog.Info("Payment request received")

        userID, _ := request["user_id"].(string)
        amount, _ := request["amount"].(float64)
        currency, _ := request["currency"].(string)

        if amount <= 0 {
            payRouteLog.Error("Invalid payment amount: %.2f", amount)
            return nil, fmt.Errorf("invalid amount")
        }

        db := database.NewDatabaseConnection("localhost", 5432, "app", "user")
        processor := payment.NewPaymentProcessor(db)

        pay := models.NewPayment(userID, amount, currency, "API payment")
        err := processor.Process(pay)
        if err != nil {
            payRouteLog.Error("Payment processing failed: %v", err)
            return nil, err
        }

        payRouteLog.Info("Payment processed: %s", pay.ID)
        return map[string]interface{}{
            "payment_id": pay.ID,
            "status":     pay.Status.String(),
        }, nil
    }

    // RefundHandler handles refund requests.
    func RefundHandler(request map[string]interface{}) (map[string]interface{}, error) {
        payRouteLog.Info("Refund request received")
        paymentID, _ := request["payment_id"].(string)

        db := database.NewDatabaseConnection("localhost", 5432, "app", "user")
        processor := payment.NewPaymentProcessor(db)

        err := processor.Refund(paymentID)
        if err != nil {
            payRouteLog.Error("Refund failed: %v", err)
            return nil, err
        }

        payRouteLog.Info("Refund processed: %s", paymentID)
        return map[string]interface{}{"status": "refunded"}, nil
    }
    """,
)

# ─── 36. internal/routes/user_routes.go ───
w(
    "internal/routes/user_routes.go",
    """\
    package routes

    import (
        "fmt"

        "internal/database"
        "internal/services"
        "internal/validators"
        "pkg/logger"
    )

    var userRouteLog = logger.GetLogger("routes.user")

    // UserHandler handles user CRUD requests.
    func UserHandler(request map[string]interface{}) (map[string]interface{}, error) {
        userRouteLog.Info("User request received")

        action, _ := request["action"].(string)
        db := database.NewDatabaseConnection("localhost", 5432, "app", "user")
        userSvc := services.NewUserService(db)

        switch action {
        case "create":
            userRouteLog.Info("Creating user")
            email, _ := request["email"].(string)
            name, _ := request["name"].(string)
            password, _ := request["password"].(string)

            validator := validators.NewUserValidator()
            errs := validator.Validate(map[string]string{
                "email": email, "name": name, "password": password,
            })
            if len(errs) > 0 {
                userRouteLog.Warn("Validation failed")
                return nil, fmt.Errorf("validation failed")
            }

            user, err := userSvc.Create(email, name, password)
            if err != nil {
                return nil, err
            }
            return map[string]interface{}{"user_id": user.ID}, nil

        case "get":
            userRouteLog.Info("Getting user")
            id, _ := request["id"].(string)
            user, err := userSvc.FindByID(id)
            if err != nil {
                return nil, err
            }
            return map[string]interface{}{"user": user}, nil

        case "delete":
            userRouteLog.Info("Deleting user")
            id, _ := request["id"].(string)
            err := userSvc.Delete(id)
            if err != nil {
                return nil, err
            }
            return map[string]interface{}{"status": "deleted"}, nil

        default:
            return nil, fmt.Errorf("unknown action: %s", action)
        }
    }
    """,
)

# ─── 37. internal/api/v1/auth.go ───
w(
    "internal/api/v1/auth.go",
    """\
    package v1

    import (
        "fmt"

        "internal/routes"
        "internal/validators"
        "pkg/logger"
    )

    var authV1Log = logger.GetLogger("api.v1.auth")

    // Validate checks v1 auth request parameters.
    func Validate(request map[string]interface{}) error {
        authV1Log.Info("Validating v1 auth request")
        email, _ := request["email"].(string)
        password, _ := request["password"].(string)
        validator := &validators.CommonValidators{}
        if err := validator.ValidateRequired("email", email); err != nil {
            return fmt.Errorf("email required")
        }
        if err := validator.ValidateRequired("password", password); err != nil {
            return fmt.Errorf("password required")
        }
        if err := validator.ValidateEmail(email); err != nil {
            return fmt.Errorf("invalid email format")
        }
        authV1Log.Info("V1 auth request validated")
        return nil
    }

    // HandleLogin handles v1 login endpoint.
    func HandleLogin(request map[string]interface{}) (map[string]interface{}, error) {
        authV1Log.Info("V1 HandleLogin")
        if err := Validate(request); err != nil {
            authV1Log.Error("Validation failed: %v", err)
            return nil, err
        }
        result, err := routes.LoginHandler(request)
        if err != nil {
            return nil, err
        }
        result["api_version"] = "v1"
        authV1Log.Info("V1 login complete")
        return result, nil
    }
    """,
)

# ─── 38. internal/api/v1/payment.go ───
w(
    "internal/api/v1/payment.go",
    """\
    package v1

    import (
        "internal/routes"
        "internal/validators"
        "pkg/logger"
    )

    var payV1Log = logger.GetLogger("api.v1.payment")

    // HandlePayment handles v1 payment endpoint.
    func HandlePayment(request map[string]interface{}) (map[string]interface{}, error) {
        payV1Log.Info("V1 HandlePayment")

        validator := validators.NewPaymentValidator()
        amount, _ := request["amount"].(string)
        currency, _ := request["currency"].(string)
        userID, _ := request["user_id"].(string)

        errs := validator.Validate(map[string]string{
            "amount": amount, "currency": currency, "user_id": userID,
        })
        if len(errs) > 0 {
            payV1Log.Error("Payment validation failed")
            return nil, errs[0]
        }

        result, err := routes.PaymentHandler(request)
        if err != nil {
            return nil, err
        }
        result["api_version"] = "v1"
        payV1Log.Info("V1 payment complete")
        return result, nil
    }
    """,
)

# ─── 39. internal/api/v2/auth.go ───
w(
    "internal/api/v2/auth.go",
    """\
    package v2

    import (
        "fmt"

        "internal/routes"
        "internal/validators"
        "pkg/logger"
    )

    var authV2Log = logger.GetLogger("api.v2.auth")

    // Validate checks v2 auth request parameters (stricter than v1).
    func Validate(request map[string]interface{}) error {
        authV2Log.Info("Validating v2 auth request")
        email, _ := request["email"].(string)
        password, _ := request["password"].(string)
        validator := &validators.CommonValidators{}
        if err := validator.ValidateRequired("email", email); err != nil {
            return fmt.Errorf("email required")
        }
        if err := validator.ValidateEmail(email); err != nil {
            return fmt.Errorf("invalid email format")
        }
        if err := validator.ValidateRequired("password", password); err != nil {
            return fmt.Errorf("password required")
        }
        if err := validator.ValidateMinLength("password", password, 12); err != nil {
            return fmt.Errorf("password must be at least 12 characters in v2")
        }
        authV2Log.Info("V2 auth request validated")
        return nil
    }

    // HandleLogin handles v2 login endpoint with enhanced security.
    func HandleLogin(request map[string]interface{}) (map[string]interface{}, error) {
        authV2Log.Info("V2 HandleLogin")
        if err := Validate(request); err != nil {
            authV2Log.Error("V2 validation failed: %v", err)
            return nil, err
        }
        result, err := routes.LoginHandler(request)
        if err != nil {
            return nil, err
        }
        result["api_version"] = "v2"
        result["enhanced_security"] = true
        authV2Log.Info("V2 login complete")
        return result, nil
    }
    """,
)

# ─── 40. internal/api/v2/payment.go ───
w(
    "internal/api/v2/payment.go",
    """\
    package v2

    import (
        "internal/routes"
        "internal/validators"
        "pkg/logger"
    )

    var payV2Log = logger.GetLogger("api.v2.payment")

    // HandlePayment handles v2 payment endpoint with enhanced validation.
    func HandlePayment(request map[string]interface{}) (map[string]interface{}, error) {
        payV2Log.Info("V2 HandlePayment")

        validator := validators.NewPaymentValidator()
        amount, _ := request["amount"].(string)
        currency, _ := request["currency"].(string)
        userID, _ := request["user_id"].(string)

        errs := validator.Validate(map[string]string{
            "amount": amount, "currency": currency, "user_id": userID,
        })
        if len(errs) > 0 {
            payV2Log.Error("V2 payment validation failed")
            return nil, errs[0]
        }

        result, err := routes.PaymentHandler(request)
        if err != nil {
            return nil, err
        }
        result["api_version"] = "v2"
        result["idempotency_key"] = request["idempotency_key"]
        payV2Log.Info("V2 payment complete")
        return result, nil
    }
    """,
)

# ─── 41. internal/tasks/email_task.go ───
w(
    "internal/tasks/email_task.go",
    """\
    package tasks

    import (
        "pkg/logger"
        "internal/services/email"
    )

    var emailTaskLog = logger.GetLogger("tasks.email")

    // EmailTask represents a background email sending task.
    type EmailTask struct {
        Sender     *email.EmailSender
        Recipients []string
        Subject    string
        Body       string
        Completed  bool
    }

    // NewEmailTask creates a new email task.
    func NewEmailTask(sender *email.EmailSender, recipients []string, subject, body string) *EmailTask {
        emailTaskLog.Info("Creating EmailTask: subject=%s, recipients=%d", subject, len(recipients))
        return &EmailTask{
            Sender:     sender,
            Recipients: recipients,
            Subject:    subject,
            Body:       body,
            Completed:  false,
        }
    }

    // Execute runs the email task.
    func (t *EmailTask) Execute() error {
        emailTaskLog.Info("Executing email task: %s", t.Subject)
        sent, err := t.Sender.SendBulk(t.Recipients, t.Subject, t.Body)
        if err != nil {
            emailTaskLog.Error("Email task failed: %v", err)
            return err
        }
        t.Completed = true
        emailTaskLog.Info("Email task completed: %d/%d sent", sent, len(t.Recipients))
        return nil
    }

    // Status returns the task status.
    func (t *EmailTask) Status() string {
        if t.Completed {
            return "completed"
        }
        return "pending"
    }
    """,
)

# ─── 42. internal/tasks/payment_task.go ───
w(
    "internal/tasks/payment_task.go",
    """\
    package tasks

    import (
        "internal/database"
        "internal/models"
        "internal/services/payment"
        "pkg/logger"
    )

    var payTaskLog = logger.GetLogger("tasks.payment")

    // PaymentTask represents a background payment processing task.
    type PaymentTask struct {
        Processor *payment.PaymentProcessor
        Payments  []*models.Payment
        Processed int
        Failed    int
    }

    // NewPaymentTask creates a new payment processing task.
    func NewPaymentTask(db *database.DatabaseConnection) *PaymentTask {
        payTaskLog.Info("Creating PaymentTask")
        return &PaymentTask{
            Processor: payment.NewPaymentProcessor(db),
            Payments:  make([]*models.Payment, 0),
            Processed: 0,
            Failed:    0,
        }
    }

    // AddPayment queues a payment for processing.
    func (t *PaymentTask) AddPayment(p *models.Payment) {
        payTaskLog.Info("Queuing payment: %s", p.ID)
        t.Payments = append(t.Payments, p)
    }

    // Execute processes all queued payments.
    func (t *PaymentTask) Execute() error {
        payTaskLog.Info("Executing payment task: %d payments", len(t.Payments))
        for _, p := range t.Payments {
            err := t.Processor.Process(p)
            if err != nil {
                payTaskLog.Error("Payment failed: %s - %v", p.ID, err)
                t.Failed++
                continue
            }
            t.Processed++
        }
        payTaskLog.Info("Payment task complete: %d processed, %d failed", t.Processed, t.Failed)
        return nil
    }

    // Status returns the task summary.
    func (t *PaymentTask) Status() map[string]int {
        return map[string]int{
            "total":     len(t.Payments),
            "processed": t.Processed,
            "failed":    t.Failed,
        }
    }
    """,
)

# ─── 43. internal/tasks/cleanup_task.go ───
w(
    "internal/tasks/cleanup_task.go",
    """\
    package tasks

    import (
        "internal/cache"
        "internal/database"
        "pkg/logger"
    )

    var cleanLog = logger.GetLogger("tasks.cleanup")

    // CleanupTask performs periodic cleanup of expired data.
    type CleanupTask struct {
        DB    *database.DatabaseConnection
        Cache cache.Cache
    }

    // NewCleanupTask creates a new cleanup task.
    func NewCleanupTask(db *database.DatabaseConnection, c cache.Cache) *CleanupTask {
        cleanLog.Info("Creating CleanupTask")
        return &CleanupTask{DB: db, Cache: c}
    }

    // CleanExpiredSessions removes expired sessions from the database.
    func (t *CleanupTask) CleanExpiredSessions() (int, error) {
        cleanLog.Info("Cleaning expired sessions")
        results, err := t.DB.ExecuteQuery("DELETE FROM sessions WHERE expires_at < NOW()")
        if err != nil {
            cleanLog.Error("Failed to clean sessions: %v", err)
            return 0, err
        }
        count := len(results)
        cleanLog.Info("Cleaned %d expired sessions", count)
        return count, nil
    }

    // CleanExpiredTokens removes expired tokens.
    func (t *CleanupTask) CleanExpiredTokens() (int, error) {
        cleanLog.Info("Cleaning expired tokens")
        results, err := t.DB.ExecuteQuery("DELETE FROM tokens WHERE expires_at < NOW()")
        if err != nil {
            cleanLog.Error("Failed to clean tokens: %v", err)
            return 0, err
        }
        count := len(results)
        cleanLog.Info("Cleaned %d expired tokens", count)
        return count, nil
    }

    // ClearCache flushes the entire cache.
    func (t *CleanupTask) ClearCache() error {
        cleanLog.Info("Clearing cache")
        return t.Cache.Clear()
    }

    // Execute runs all cleanup tasks.
    func (t *CleanupTask) Execute() error {
        cleanLog.Info("Executing cleanup task")
        sessions, _ := t.CleanExpiredSessions()
        tokens, _ := t.CleanExpiredTokens()
        _ = t.ClearCache()
        cleanLog.Info("Cleanup complete: %d sessions, %d tokens removed", sessions, tokens)
        return nil
    }
    """,
)

# ─── 44. cmd/server/main.go ───
w(
    "cmd/server/main.go",
    """\
    package main

    import (
        "fmt"

        "internal/auth"
        "internal/cache"
        "internal/database"
        "internal/events"
        "internal/middleware"
        "internal/routes"
        "internal/services"
        "internal/services/notification"
        "internal/services/email"
        "internal/tasks"
        "pkg/config"
        "pkg/logger"
    )

    var mainLog = logger.GetLogger("main")

    func main() {
        mainLog.Info("Starting application")

        // Load configuration
        cfg := config.LoadConfig("config.yaml")
        mainLog.Info("Configuration loaded: %s", cfg.AppName)

        // Initialize database
        db := database.NewDatabaseConnection(cfg.DBHost, cfg.DBPort, cfg.DBName, cfg.DBUser)
        mainLog.Info("Database connected")

        // Initialize cache
        redisCache := cache.NewRedisCache(cfg.RedisHost, cfg.RedisPort, "", 0)
        memCache := cache.NewMemoryCache()
        _ = redisCache
        _ = memCache

        // Initialize auth
        authSvc := auth.NewAuthService()
        _ = authSvc

        // Initialize services
        authenticationSvc := services.NewAuthenticationService(db)
        userSvc := services.NewUserService(db)
        sessionSvc := services.NewSessionService(db)
        _ = authenticationSvc
        _ = userSvc
        _ = sessionSvc

        // Initialize notifications
        notifMgr := notification.NewNotificationManager()
        _ = notifMgr

        // Initialize email
        emailSender := email.NewEmailSender(cfg.SMTPHost, cfg.SMTPPort, cfg.SMTPUser, cfg.FromEmail)
        _ = emailSender

        // Initialize events
        dispatcher := events.NewEventDispatcher()
        events.RegisterDefaultHandlers(dispatcher)

        // Set up middleware chain
        limiter := middleware.NewRateLimiter(100)
        corsConfig := middleware.DefaultCorsConfig()
        _ = limiter
        _ = corsConfig

        // Register routes
        handler := middleware.LoggingMiddleware(
            middleware.AuthMiddleware(func(req *middleware.Request) *middleware.Response {
                result, err := routes.LoginHandler(map[string]interface{}{
                    "email":    req.Body["email"],
                    "password": req.Body["password"],
                })
                if err != nil {
                    return &middleware.Response{Status: 500, Body: map[string]interface{}{"error": err.Error()}}
                }
                return &middleware.Response{Status: 200, Body: result}
            }),
        )
        _ = handler

        // Initialize background tasks
        cleanupTask := tasks.NewCleanupTask(db, redisCache)
        _ = cleanupTask

        fmt.Println("Application started successfully")
        mainLog.Info("Application ready")
    }
    """,
)

# ─── 45. pkg/config/config.go ───
w(
    "pkg/config/config.go",
    """\
    package config

    import (
        "pkg/logger"
    )

    var cfgLog = logger.GetLogger("config")

    // Config holds the application configuration.
    type Config struct {
        AppName   string
        AppPort   int
        Debug     bool
        DBHost    string
        DBPort    int
        DBName    string
        DBUser    string
        DBPass    string
        RedisHost string
        RedisPort int
        SMTPHost  string
        SMTPPort  int
        SMTPUser  string
        FromEmail string
        JWTSecret string
        LogLevel  string
    }

    // LoadConfig reads configuration from the given file path.
    func LoadConfig(path string) *Config {
        cfgLog.Info("Loading configuration from: %s", path)
        cfg := &Config{
            AppName:   "webapp_go",
            AppPort:   8080,
            Debug:     true,
            DBHost:    "localhost",
            DBPort:    5432,
            DBName:    "webapp",
            DBUser:    "admin",
            DBPass:    "secret",
            RedisHost: "localhost",
            RedisPort: 6379,
            SMTPHost:  "smtp.example.com",
            SMTPPort:  587,
            SMTPUser:  "mailer",
            FromEmail: "noreply@example.com",
            JWTSecret: "super-secret-key",
            LogLevel:  "debug",
        }
        cfgLog.Info("Configuration loaded: app=%s, port=%d", cfg.AppName, cfg.AppPort)
        return cfg
    }

    // GetDSN returns the database connection string.
    func (c *Config) GetDSN() string {
        cfgLog.Debug("Building DSN")
        return c.DBUser + ":" + c.DBPass + "@" + c.DBHost + "/" + c.DBName
    }

    // IsProduction returns true if the app is not in debug mode.
    func (c *Config) IsProduction() bool {
        return !c.Debug
    }

    // SetLogLevel updates the log level configuration.
    func (c *Config) SetLogLevel(level string) {
        cfgLog.Info("Setting log level to: %s", level)
        c.LogLevel = level
    }
    """,
)

print("\\nDone! All Go fixture files generated.")
