# All files / lib/analyzers dependency-analyzer.js

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     import fs from 'fs-extra';
    import path from 'path';
    import chalk from 'chalk';

    /**
     * Analyzes project dependencies from various package manager files.
     * Returns structured dependency data for ideation scoring.
     */

    /**
     * Parse package.json and extract dependencies.
     */
    export async function parseNodeDependencies(projectPath) {
      const packageJsonPath = path.join(projectPath, 'package.json');
      if (!await fs.pathExists(packageJsonPath)) {
        return { dependencies: {}, devDependencies: {}, frameworks: [], language: null };
      }

      try {
        const pkg = await fs.readJson(packageJsonPath);
        const deps = { ...pkg.dependencies, ...pkg.devDependencies };
        const frameworks = detectNodeFrameworks(deps);

        return {
          dependencies: pkg.dependencies || {},
          devDependencies: pkg.devDependencies || {},
          frameworks,
          language: 'TypeScript/JavaScript',
          hasTypeScript: !!pkg.dependencies?.typescript || !!pkg.devDependencies?.typescript
        };
      } catch (err) {
        console.log(chalk.yellow(`Warning: Could not parse package.json: ${err.message}`));
        return { dependencies: {}, devDependencies: {}, frameworks: [], language: null };
      }
    }

    /**
     * Parse go.mod and extract dependencies.
     */
    export async function parseGoDependencies(projectPath) {
      const goModPath = path.join(projectPath, 'go.mod');
      if (!await fs.pathExists(goModPath)) {
        return { dependencies: {}, frameworks: [], language: null };
      }

      try {
        const content = await fs.readFile(goModPath, 'utf8');
        const lines = content.split('\n');
        const dependencies = {};
        const frameworks = [];

        lines.forEach(line => {
          const match = line.match(/^\s+([^\s]+)\s+([^\s]+)/);
          if (match) {
            const dep = match[1];
            dependencies[dep] = match[2];

            // Detect common Go frameworks/libraries
            if (dep.includes('gin-gonic')) frameworks.push('gin');
            if (dep.includes('gorilla/mux')) frameworks.push('gorilla/mux');
            if (dep.includes('echo')) frameworks.push('echo');
            if (dep.includes('fiber')) frameworks.push('fiber');
            if (dep.includes('gorm')) frameworks.push('gorm');
            if (dep.includes('lib/pq') || dep.includes('jackc/pgx')) frameworks.push('postgres');
          }
        });

        return {
          dependencies,
          frameworks,
          language: 'Go'
        };
      } catch (err) {
        console.log(chalk.yellow(`Warning: Could not parse go.mod: ${err.message}`));
        return { dependencies: {}, frameworks: [], language: null };
      }
    }

    /**
     * Parse requirements.txt and extract dependencies.
     */
    export async function parsePythonDependencies(projectPath) {
      const requirementsPath = path.join(projectPath, 'requirements.txt');
      const pyprojectPath = path.join(projectPath, 'pyproject.toml');

      if (!await fs.pathExists(requirementsPath) && !await fs.pathExists(pyprojectPath)) {
        return { dependencies: {}, frameworks: [], language: null };
      }

      const dependencies = {};
      const frameworks = [];

      // Parse requirements.txt
      if (await fs.pathExists(requirementsPath)) {
        try {
          const content = await fs.readFile(requirementsPath, 'utf8');
          const lines = content.split('\n').map(l => l.trim()).filter(l => l && !l.startsWith('#'));

          lines.forEach(line => {
            // Extract package name (before version specifiers)
            const match = line.match(/^([a-zA-Z0-9_-]+)/);
            if (match) {
              const pkg = match[1].toLowerCase();
              dependencies[pkg] = line;

              // Detect common Python frameworks/libraries
              if (pkg.includes('django')) frameworks.push('django');
              if (pkg.includes('fastapi')) frameworks.push('fastapi');
              if (pkg.includes('flask')) frameworks.push('flask');
              if (pkg.includes('sqlalchemy')) frameworks.push('sqlalchemy');
              if (pkg.includes('pytest')) frameworks.push('pytest');
              if (pkg.includes('pymongo') || pkg.includes('motor')) frameworks.push('mongodb');
              if (pkg.includes('redis')) frameworks.push('redis');
              if (pkg.includes('celery')) frameworks.push('celery');
            }
          });
        } catch (err) {
          console.log(chalk.yellow(`Warning: Could not parse requirements.txt: ${err.message}`));
        }
      }

      // Parse pyproject.toml
      if (await fs.pathExists(pyprojectPath)) {
        try {
          const content = await fs.readFile(pyprojectPath, 'utf8');
          // Simple parsing - look for common framework patterns
          const lowerContent = content.toLowerCase();
          if (lowerContent.includes('django')) frameworks.push('django');
          if (lowerContent.includes('fastapi')) frameworks.push('fastapi');
          if (lowerContent.includes('flask')) frameworks.push('flask');
          if (lowerContent.includes('pytest')) frameworks.push('pytest');
        } catch (err) {
          console.log(chalk.yellow(`Warning: Could not parse pyproject.toml: ${err.message}`));
        }
      }

      return {
        dependencies,
        frameworks,
        language: 'Python'
      };
    }

    /**
     * Parse Cargo.toml and extract dependencies.
     */
    export async function parseRustDependencies(projectPath) {
      const cargoPath = path.join(projectPath, 'Cargo.toml');
      if (!await fs.pathExists(cargoPath)) {
        return { dependencies: {}, frameworks: [], language: null };
      }

      try {
        const content = await fs.readFile(cargoPath, 'utf8');
        const dependencies = {};
        const frameworks = [];

        // Simple parsing - look for dependency lines
        const lines = content.split('\n');
        let inDependencies = false;

        lines.forEach(line => {
          if (line.trim() === '[dependencies]') {
            inDependencies = true;
            return;
          }
          if (inDependencies && line.trim().startsWith('[')) {
            inDependencies = false;
            return;
          }
          if (inDependencies) {
            const match = line.match(/^\s*([a-zA-Z0-9_-]+)\s*=\s*"([^"]+)"/);
            if (match) {
              const dep = match[1].toLowerCase();
              dependencies[dep] = match[2];

              // Detect common Rust frameworks/libraries
              if (dep.includes('actix')) frameworks.push('actix');
              if (dep.includes('rocket')) frameworks.push('rocket');
              if (dep.includes('tokio')) frameworks.push('tokio');
              if (dep.includes('diesel')) frameworks.push('diesel');
              if (dep.includes('sqlx')) frameworks.push('sqlx');
              if (dep.includes('redis')) frameworks.push('redis');
            }
          }
        });

        return {
          dependencies,
          frameworks,
          language: 'Rust'
        };
      } catch (err) {
        console.log(chalk.yellow(`Warning: Could not parse Cargo.toml: ${err.message}`));
        return { dependencies: {}, frameworks: [], language: null };
      }
    }

    /**
     * Parse Gemfile and extract dependencies.
     */
    export async function parseRubyDependencies(projectPath) {
      const gemfilePath = path.join(projectPath, 'Gemfile');
      if (!await fs.pathExists(gemfilePath)) {
        return { dependencies: {}, frameworks: [], language: null };
      }

      try {
        const content = await fs.readFile(gemfilePath, 'utf8');
        const dependencies = {};
        const frameworks = [];

        // Simple parsing - look for gem declarations
        const lines = content.split('\n');
        lines.forEach(line => {
          const match = line.match(/gem\s+["']([a-zA-Z0-9_-]+)/);
          if (match) {
            const dep = match[1].toLowerCase();
            dependencies[dep] = 'latest';

            // Detect common Ruby frameworks/libraries
            if (dep.includes('rails')) frameworks.push('rails');
            if (dep.includes('sinatra')) frameworks.push('sinatra');
            if (dep.includes('rspec')) frameworks.push('rspec');
            if (dep.includes('pg')) frameworks.push('postgres');
            if (dep.includes('redis')) frameworks.push('redis');
            if (dep.includes('sidekiq')) frameworks.push('sidekiq');
          }
        });

        return {
          dependencies,
          frameworks,
          language: 'Ruby'
        };
      } catch (err) {
        console.log(chalk.yellow(`Warning: Could not parse Gemfile: ${err.message}`));
        return { dependencies: {}, frameworks: [], language: null };
      }
    }

    /**
     * Main function to analyze all dependencies in a project.
     * Detects the package manager and parses accordingly.
     */
    export async function analyzeDependencies(projectPath) {
      const results = {
        node: await parseNodeDependencies(projectPath),
        go: await parseGoDependencies(projectPath),
        python: await parsePythonDependencies(projectPath),
        rust: await parseRustDependencies(projectPath),
        ruby: await parseRubyDependencies(projectPath)
      };

      // Find the primary language based on which parser returned data
      let primaryLanguage = null;
      let primaryFramework = [];
      let allDependencies = {};
      let allFrameworks = [];

      for (const [lang, data] of Object.entries(results)) {
        if (data.language) {
          primaryLanguage = data.language;
          primaryFramework = data.frameworks;
          allDependencies = { ...allDependencies, ...data.dependencies };
          allFrameworks = [...allFrameworks, ...data.frameworks];
          break;
        }
      }

      return {
        primaryLanguage,
        primaryFramework,
        allDependencies,
        allFrameworks,
        hasDependencies: Object.keys(allDependencies).length > 0,
        raw: results
      };
    }

    /**
     * Helper: Detect Node.js frameworks from dependencies.
     */
    function detectNodeFrameworks(deps) {
      const frameworks = [];

      // Backend frameworks
      if (deps.express) frameworks.push('express');
      if (deps['@nestjs/core']) frameworks.push('nestjs');
      if (deps.fastify) frameworks.push('fastify');
      if (deps.koa) frameworks.push('koa');
      if (deps.hapi) frameworks.push('hapi');
      if (deps.remix || deps['@remix-run/react']) frameworks.push('remix');

      // Frontend frameworks
      if (deps.react) frameworks.push('react');
      if (deps.next) frameworks.push('next');
      if (deps.vue || deps.nuxt) frameworks.push('vue');
      if (deps.svelte) frameworks.push('svelte');
      if (deps['@angular/core']) frameworks.push('angular');
      if (deps.astro) frameworks.push('astro');

      // Databases
      if (deps.prisma || deps['@prisma/client']) frameworks.push('prisma');
      if (deps.sequelize) frameworks.push('sequelize');
      if (deps.mongoose) frameworks.push('mongoose');
      if (deps.typeorm) frameworks.push('typeorm');
      if (deps['mikro-orm']) frameworks.push('mikro-orm');
      if (deps.pg) frameworks.push('postgres');
      if (deps.mysql || deps.mysql2) frameworks.push('mysql');
      if (deps.redis || deps.ioredis) frameworks.push('redis');

      // Testing
      if (deps.jest || deps['@jest/globals']) frameworks.push('jest');
      if (deps.mocha) frameworks.push('mocha');
      if (deps.chai) frameworks.push('chai');
      if (deps.vitest) frameworks.push('vitest');
      if (deps['@playwright/test']) frameworks.push('playwright');
      if (deps.cypress) frameworks.push('cypress');
      if (deps['@testing-library/react']) frameworks.push('testing-library');

      return frameworks;
    }