// 后端 API 客户端 — 全项目统一入口
//
// Dev:Vite 代理 /api 到 :3018
// Prod:同源(FastAPI 托管前端 dist)

import { toast } from '@/components/Toast'

const BASE = ''

async function request<T>(path: string, init?: RequestInit): Promise<T> {
  const isFormData = init?.body instanceof FormData
  const headers: Record<string, string> = {}
  if (!isFormData) headers['Content-Type'] = 'application/json'
  const res = await fetch(`${BASE}${path}`, { ...init, headers })
  if (!res.ok) {
    let detail = ''
    try { const j = JSON.parse(await res.text()); detail = j.detail ?? j.message ?? '' } catch { /* ignore */ }
    const msg = detail || `${res.status} ${res.statusText}`
    toast(msg, 'error')
    throw new Error(msg)
  }
  return res.json() as Promise<T>
}

// ===== Capabilities =====
export interface CapabilityLimits {
  rpm: number | null
  batch: number | null
  subscribe: number | null
}

export interface CapabilitiesResponse {
  label: string
  capabilities: Record<string, CapabilityLimits>
}

// ===== Financials =====
export interface FinancialStatus {
  available: boolean
  tables: Record<string, { rows: number; symbols: number }>
  last_sync: Record<string, string>
  /** 服务端是否正在同步(手动触发)——驱动"同步中"UI 并防重复点击 */
  syncing?: boolean
}

export interface FinancialMetricRecord {
  symbol?: string
  period_end: string
  announce_date?: string | null
  eps_basic?: number | null
  eps_diluted?: number | null
  bps?: number | null
  ocfps?: number | null
  roe?: number | null
  roe_diluted?: number | null
  roa?: number | null
  gross_margin?: number | null
  net_margin?: number | null
  debt_to_asset_ratio?: number | null
  revenue_yoy?: number | null
  net_income_yoy?: number | null
  operating_cash_to_revenue?: number | null
  inventory_turnover?: number | null
  [key: string]: any
}

export interface FinancialIncomeRecord {
  symbol?: string
  period_end: string
  announce_date?: string | null
  revenue?: number | null
  operating_cost?: number | null
  operating_profit?: number | null
  total_profit?: number | null
  net_income?: number | null
  net_income_attributable?: number | null
  basic_eps?: number | null
  diluted_eps?: number | null
  [key: string]: any
}

export interface FinancialBalanceSheetRecord {
  symbol?: string
  period_end: string
  announce_date?: string | null
  total_assets?: number | null
  total_current_assets?: number | null
  cash_and_equivalents?: number | null
  total_liabilities?: number | null
  total_equity?: number | null
  equity_attributable?: number | null
  [key: string]: any
}

export interface FinancialCashFlowRecord {
  symbol?: string
  period_end: string
  announce_date?: string | null
  net_operating_cash_flow?: number | null
  net_investing_cash_flow?: number | null
  net_financing_cash_flow?: number | null
  capex?: number | null
  net_cash_change?: number | null
  [key: string]: any
}

// ===== Kline =====
export interface MinuteKlineRow {
  datetime: string
  open: number
  high: number
  low: number
  close: number
  volume: number
  amount: number
}

export interface KlineRow {
  symbol?: string
  date: string
  open: number
  high: number
  low: number
  close: number
  volume?: number
  change_pct?: number
  ma5?: number | null
  ma20?: number | null
  ma60?: number | null
  macd_dif?: number | null
  macd_dea?: number | null
  macd_hist?: number | null
  rsi_14?: number | null
  vol_ratio_5d?: number | null
  [key: string]: any
}

// ===== Watchlist =====
export interface WatchlistEntry {
  symbol: string
  added_at: string
  note?: string
}

export interface Quote {
  symbol: string
  price?: number
  pct?: number
  close?: number
  change_pct?: number
  [key: string]: any
}

export interface IndexInstrument {
  symbol: string
  name?: string | null
  code?: string | null
  asset_type?: 'index'
  [key: string]: any
}

export interface IndexQuote {
  symbol: string
  name?: string | null
  last_price?: number | null
  close?: number | null
  prev_close?: number | null
  change_pct?: number | null
  change_amount?: number | null
  open?: number | null
  high?: number | null
  low?: number | null
  volume?: number | null
  amount?: number | null
  timestamp?: number | null
  [key: string]: any
}

// ===== Screener =====
export interface ScreenerStrategy {
  id: string
  name: string
  description: string
  source?: string
}

export interface ScreenerResult {
  as_of: string
  strategy: string | null
  rows: any[]
  total: number
  elapsed_ms: number
}

export interface MarketSnapshotRow {
  symbol: string
  name?: string | null
  close?: number | null
  change_pct?: number | null
  amount?: number | null
  volume?: number | null
  turnover_rate?: number | null
  vol_ratio_5d?: number | null
  total_shares?: number | null
  float_shares?: number | null
  market_cap?: number | null
  float_market_cap?: number | null
  consecutive_limit_ups?: number | null
  [key: string]: any
}

export interface OverviewDimensionRankItem {
  name: string
  count: number
  avg_pct: number
  up_count: number
  down_count: number
  amount: number
  leader?: {
    symbol?: string | null
    name?: string | null
    change_pct?: number | null
  } | null
}

export interface OverviewMarket {
  as_of: string | null
  quote_status: {
    enabled?: boolean
    running?: boolean
    quote_age_ms?: number | null
    is_trading_hours?: boolean
    [key: string]: any
  }
  indices: IndexQuote[]
  breadth: {
    total: number
    up: number
    down: number
    flat: number
    up_pct: number
    down_pct: number
    avg_pct?: number | null
    median_pct?: number | null
    strong_up?: number
    strong_down?: number
  }
  amount: { total: number; avg: number }
  boards: { board: string; count: number; up: number; down: number; up_pct: number; amount: number }[]
  limit: { limit_up: number; broken: number; failed: number; limit_down: number; max_boards: number; seal_rate?: number; tiers: { boards: number; count: number }[]; sealed_ready?: boolean; fake_up?: number; fake_down?: number }
  distribution: { label: string; count: number; pct: number }[]
  trend: { above_ma5: number; above_ma20: number; above_ma60: number; above_ma5_pct: number; above_ma20_pct: number; above_ma60_pct: number; new_high: number; new_low: number }
  activity: { avg_turnover: number; high_turnover: number; high_vol_ratio: number; vol_ratio: number }
  radar: { key: string; label: string; value: number }[]
  emotion: { score: number; label: string }
  top_gainers: MarketSnapshotRow[]
  top_losers: MarketSnapshotRow[]
  turnover_leaders: MarketSnapshotRow[]
  active_leaders: MarketSnapshotRow[]
  concept_rank: { leading: OverviewDimensionRankItem[]; lagging: OverviewDimensionRankItem[] }
  industry_rank: { leading: OverviewDimensionRankItem[]; lagging: OverviewDimensionRankItem[] }
}

// ===== Strategy Engine =====
export interface StrategyParamDef {
  id: string
  label: string
  type: 'float' | 'int' | 'select' | 'bool'
  default: number | string | boolean
  min?: number
  max?: number
  step?: number
  options?: string[]
}

export interface StrategyDetail {
  id: string
  name: string
  description: string
  tags: string[]
  source: 'builtin' | 'custom' | 'ai'
  version: string
  basic_filter: Record<string, any>
  params: StrategyParamDef[]
  params_defaults: Record<string, any>
  scoring: Record<string, number>
  entry_signals: string[]
  exit_signals: string[]
  stop_loss: number | null
  trailing_stop: number | null
  trailing_take_profit_activate: number | null
  trailing_take_profit_drawdown: number | null
  max_hold_days: number | null
  display_limit?: number
  alerts: { field: string; op?: string; value?: number; message: string }[]
  order_by: string
  descending: boolean
  limit: number
}

// ===== Custom Signals (自定义信号) =====
export interface CustomSignalCondition {
  left: string     // 字段名
  op: string       // > >= < <= == !=
  right: string    // "field:xxx" 或数字字符串
}

export interface CustomSignal {
  id: string
  name: string
  kind: 'entry' | 'exit' | 'both'
  conditions: CustomSignalCondition[]
  enabled: boolean
}

export interface CustomSignalOptions {
  fields: { key: string; label: string }[]
  operators: string[]
  kinds: { key: string; label: string }[]
}

// ===== Monitor (监控规则 + 触发记录) =====
export interface MonitorCondition {
  field: string
  op: string              // truth | > >= < <= == !=
  value?: number | null   // op 非 truth 时必填
}

export interface MonitorRule {
  id: string
  name: string
  enabled: boolean
  type: 'strategy' | 'signal' | 'price' | 'market'
  scope: 'symbols' | 'all' | 'sector'
  symbols: string[]
  sector?: string | null
  strategy_id?: string | null
  direction: 'entry' | 'exit' | 'both'
  conditions: MonitorCondition[]
  logic: 'and' | 'or'
  cooldown_seconds: number
  severity: 'info' | 'warn' | 'critical'
  message: string
  webhook_url?: string
  webhook_enabled?: boolean
  created_at?: string
}

export interface MonitorRuleOptions {
  threshold_fields: { key: string; label: string }[]
  builtin_signals: { key: string; label: string }[]
  custom_signals: { key: string; label: string }[]
  operators: string[]
  types: { key: string; label: string }[]
  scopes: { key: string; label: string }[]
  logics: { key: string; label: string }[]
  severities: { key: string; label: string }[]
  directions: { key: string; label: string }[]
}

export interface AlertEvent {
  ts: number
  rule_id?: string
  rule_name?: string
  source: string
  type: string
  symbol?: string
  name?: string | null
  message: string
  price?: number | null
  change_pct?: number | null
  signals?: string[]
  severity?: string
  strategy_id?: string
}

/** 生成监控规则 id (时间戳 + 随机后缀), 用户无需手动填写。 */
export function genRuleId(): string {
  const ts = Date.now().toString(36)
  const rand = Math.random().toString(36).slice(2, 6)
  return `mr_${ts}_${rand}`
}

// ===== Limit Ladder =====
export interface LimitLadderStock {
  symbol: string
  name?: string | null
  close?: number | null
  change_pct?: number | null
  consecutive_limit_ups?: number | null
  consecutive_limit_downs?: number | null
  status?: 'limit_up' | 'broken' | 'failed' | 'limit_down' | 'recovery' | null
  /** 五档 sealed: real=真封板, fake=假涨停(已归炸板), pending=待确认, null=降级/无能力 */
  sealed_status?: 'real' | 'fake' | 'pending' | null
  /** 封单量(买一/卖一量), 仅真封板有值 */
  sealed_vol?: number | null
}

export interface LimitLadderTier {
  boards: number
  count: number
  stocks: LimitLadderStock[]
}

export interface LimitLadderResult {
  as_of: string
  tiers: LimitLadderTier[]
  /** 双方向涨跌停计数(修正后, 不论当前 direction) */
  counts?: { up: number; down: number }
  /** 双方向涨跌停原始计数(修正前, 供弹窗对比) */
  counts_raw?: { up: number; down: number }
  /** sealed 数据是否就绪(false→前端显示降级标识) */
  sealed_ready?: boolean
  /** sealed 数据 age(秒), null=盘后定版或无数据 */
  sealed_age?: number | null
  /** sealed 修正统计: real=真封板, fake=假涨停(归炸板), pending=待确认 */
  sealed_counts?: { real: number; fake: number; pending: number }
  /** 涨停侧 sealed 明细 */
  sealed_counts_up?: { real: number; fake: number; pending: number }
  /** 跌停侧 sealed 明细 */
  sealed_counts_down?: { real: number; fake: number; pending: number }
}

// ===== Backtest =====
export interface BacktestResult {
  run_id: string
  config: any
  stats: Record<string, any>
  equity_curve: { date: string; value: number }[]
  trades: any[]
  per_symbol_stats: { symbol: string; total_return: number }[]
}

// ===== Factor Backtest =====
export interface FactorColumn {
  id: string
  label: string
  group: string
  desc: string
}

export interface GroupStat {
  group: number
  label: string
  total_return: number
  annual_return: number
  max_drawdown: number
  sharpe: number
  win_rate: number
}

export interface FactorBacktestResult {
  run_id: string
  config: Record<string, any>
  ic_mean: number | null
  ic_std: number | null
  ir: number | null
  ic_win_rate: number | null
  ic_series: { date: string; ic: number }[]
  group_stats: GroupStat[]
  group_nav: Record<string, any>[]
  long_short_stats: Record<string, any>
  long_short_nav: { date: string; value: number }[]
  elapsed_ms: number
  n_symbols: number
  n_dates: number
  error: string | null
}

// ===== Strategy Backtest =====
export interface StrategyBacktestTrade {
  symbol: string
  name?: string
  entry_date: string
  exit_date: string
  entry_price: number
  exit_price: number
  pnl_pct: number
  duration: number
  exit_reason: string
  shares?: number
  lots?: number
  position_pct?: number
  entry_value?: number
  exit_value?: number
  pnl_amount?: number
  entry_score?: number | null
  entry_signal_date?: string | null
  exit_signal_date?: string | null
  blocked_exit_days?: number
}

export interface StrategyBacktestResult {
  run_id: string
  config: Record<string, any>
  stats: Record<string, any>
  equity_curve: { date: string; value: number; cash?: number; positions?: number; exposure?: number }[]
  drawdown_curve: { date: string; value: number }[]
  benchmark_curve?: { date: string; value: number; close?: number; name?: string; symbol?: string }[]
  trades: StrategyBacktestTrade[]
  per_symbol_stats: {
    symbol: string
    n_trades: number
    total_return: number
    win_rate: number
    best: number
    worst: number
  }[]
  strategy_info: {
    id: string
    name: string
    description: string
    entry_signals: string[]
    exit_signals: string[]
    stop_loss: number | null
    trailing_stop: number | null
    trailing_take_profit_activate: number | null
    trailing_take_profit_drawdown: number | null
    score_min: number | null
    score_max: number | null
    max_hold_days: number | null
    source: string
  }
  elapsed_ms: number
  error: string | null
}

// ===== Settings =====

/** 端点发现清单 —— 对应 tickflow.org/endpoints.json */
export interface EndpointItem {
  id: string
  url: string
  label: string
  region?: string
  description?: string
  premium?: boolean
}

export interface EndpointManifest {
  version?: number
  description?: string
  healthPath?: string
  /** 每端点测试轮数,用于 /health 多轮探测取中位数 */
  testRounds?: number
  endpoints: EndpointItem[]
  /** 数据来源:remote=远程拉取 / fallback=内置回退列表 */
  source?: 'remote' | 'fallback'
}

export interface SettingsState {
  mode: 'none' | 'free' | 'api_key'
  tickflow_api_key_masked: string
  has_tickflow_key: boolean
  tier_label: string
  current_endpoint: string
  probe_log: string[]
  missing_caps: string[]
  extras_caps: string[]
  // 首次使用引导
  onboarding_completed: boolean
  // AI 配置
  ai_provider: string
  ai_base_url: string
  ai_api_key_masked: string
  has_ai_key: boolean
  ai_model: string
  ai_daily_token_budget: number
}

/** 保存 TickFlow Key 的响应(先探后存) */
export interface SaveTickflowKeyResult {
  ok: boolean
  /** ok=false 且 key 无效时的原因标识,前端据此提示「Key 无效」 */
  reason?: 'invalid'
  error?: string
  mode?: 'none' | 'free' | 'api_key'
  tier_label?: string
  current_endpoint?: string
  tickflow_api_key_masked?: string
  capabilities_count?: number
}

export interface Preferences {
  realtime_quotes_enabled: boolean
  indices_nav_pinned: boolean
  minute_sync_enabled: boolean
  minute_sync_days: number
  pipeline_schedule: { hour: number; minute: number }
  instruments_schedule: { hour: number; minute: number }
  enriched_batch_size: number
  index_daily_batch_size: number
  limit_ladder_monitor_enabled: boolean
  depth_polling_interval: number
  depth_finalize_time: { hour: number; minute: number }
  sse_refresh_pages: Record<string, boolean>
  strategy_monitor_enabled: boolean
  strategy_monitor_ids: string[]
  system_notify_enabled: boolean
  sidebar_index_symbols: string[]
  nav_order: string[]
  nav_hidden: string[]
  screener_auto_run: boolean
}

// ===== Strategy Alert =====
export interface StrategyAlertEvent {
  source: 'strategy' | 'depth'
  type: string
  strategy_id?: string
  symbol?: string
  name?: string | null
  message: string
  price?: number | null
  change_pct?: number | null
  signals?: string[]
}

// ===== API surface =====
export const api = {
  health: () => request<{ status: string; version: string; mode: string }>('/health'),

  settings: () => request<SettingsState>('/api/settings'),
  saveTickflowKey: (api_key: string) =>
    request<SaveTickflowKeyResult>('/api/settings/tickflow-key', {
      method: 'POST',
      body: JSON.stringify({ api_key }),
    }),
  clearTickflowKey: () =>
    request<any>('/api/settings/tickflow-key', { method: 'DELETE' }),

  /** 标记首次使用向导完成（持久化到后端 preferences） */
  completeOnboarding: () =>
    request<{ ok: boolean; onboarding_completed: boolean }>(
      '/api/settings/onboarding/complete', { method: 'POST' },
    ),

  /** 保存 AI 配置 */
  saveAiSettings: (ai: { provider?: string; base_url?: string; api_key?: string; model?: string; daily_token_budget?: number }) =>
    request<{ ok: boolean }>('/api/settings/ai', {
      method: 'POST',
      body: JSON.stringify(ai),
    }),

  preferences: () => request<Preferences>('/api/settings/preferences'),
  updateMinuteSync: (enabled: boolean, days: number) =>
    request<Preferences>('/api/settings/preferences/minute-sync', {
      method: 'PUT',
      body: JSON.stringify({ minute_sync_enabled: enabled, minute_sync_days: days }),
    }),
  updateRealtimeQuotes: (enabled: boolean) =>
    request<{ realtime_quotes_enabled: boolean }>('/api/settings/preferences/realtime-quotes', {
      method: 'PUT',
      body: JSON.stringify({ realtime_quotes_enabled: enabled }),
    }),
  updateIndicesNavPinned: (pinned: boolean) =>
    request<{ indices_nav_pinned: boolean }>('/api/settings/preferences/indices-nav-pinned', {
      method: 'PUT',
      body: JSON.stringify({ indices_nav_pinned: pinned }),
    }),
  quoteStatus: () =>
    request<{
      enabled: boolean
      running: boolean
      interval_s: number
      symbol_count: number
      index_symbol_count?: number
      quote_age_ms: number | null
      is_trading_hours: boolean
      last_fetch_ms: number | null
    }>('/api/intraday/status'),
  quoteInterval: () =>
    request<{ interval: number; min_interval: number; max_interval: number }>(
      '/api/settings/preferences/quote-interval',
    ),
  updateQuoteInterval: (interval: number) =>
    request<{ interval: number; min_interval: number; max_interval: number }>(
      '/api/settings/preferences/quote-interval',
      { method: 'PUT', body: JSON.stringify({ interval }) },
    ),
  intradayRefresh: () => request<{ status: string }>('/api/intraday/refresh', { method: 'POST' }),
  indexQuotes: (symbols?: string[]) =>
    request<{ rows: IndexQuote[]; count: number }>(
      `/api/intraday/indices${symbols?.length ? `?symbols=${encodeURIComponent(symbols.join(','))}` : ''}`,
    ),
  updateRealtimeMonitorConfig: (cfg: {
    sse_refresh_pages?: Record<string, boolean>
    strategy_monitor_enabled?: boolean
    strategy_monitor_ids?: string[]
    sidebar_index_symbols?: string[]
    screener_auto_run?: boolean
  }) =>
    request<{
      sse_refresh_pages: Record<string, boolean>
      strategy_monitor_enabled: boolean
      strategy_monitor_ids: string[]
      sidebar_index_symbols: string[]
      screener_auto_run: boolean
    }>('/api/settings/preferences/realtime-monitor', {
      method: 'PUT',
      body: JSON.stringify(cfg),
    }),
  updateSystemNotify: (enabled: boolean) =>
    request<{ system_notify_enabled: boolean }>('/api/settings/preferences/system-notify', {
      method: 'PUT',
      body: JSON.stringify({ enabled }),
    }),
  updatePipelineSchedule: (hour: number, minute: number) =>
    request<{ hour: number; minute: number }>('/api/settings/preferences/pipeline-schedule', {
      method: 'PUT',
      body: JSON.stringify({ hour, minute }),
    }),
  updateDepthPollingInterval: (interval: number) =>
    request<{ depth_polling_interval: number }>('/api/settings/preferences/depth-polling-interval', {
      method: 'PUT',
      body: JSON.stringify({ interval }),
    }),
  updateLimitLadderMonitor: (enabled: boolean) =>
    request<{ limit_ladder_monitor_enabled: boolean }>('/api/settings/preferences/limit-ladder-monitor', {
      method: 'PUT',
      body: JSON.stringify({ enabled }),
    }),
  runLimitLadderFix: () =>
    request<{ ok: boolean; count: number; msg: string }>('/api/settings/preferences/limit-ladder-monitor/run', {
      method: 'POST',
    }),
  updateDepthFinalizeTime: (hour: number, minute: number) =>
    request<{ hour: number; minute: number }>('/api/settings/preferences/depth-finalize-time', {
      method: 'PUT',
      body: JSON.stringify({ hour, minute }),
    }),
  saveNavOrder: (nav_order: string[]) =>
    request<{ nav_order: string[] }>('/api/settings/preferences/nav-order', {
      method: 'PUT',
      body: JSON.stringify({ nav_order }),
    }),
  saveNavHidden: (nav_hidden: string[]) =>
    request<{ nav_hidden: string[] }>('/api/settings/preferences/nav-hidden', {
      method: 'PUT',
      body: JSON.stringify({ nav_hidden }),
    }),
  updateInstrumentsSchedule: (hour: number, minute: number) =>
    request<{ hour: number; minute: number }>('/api/settings/preferences/instruments-schedule', {
      method: 'PUT',
      body: JSON.stringify({ hour, minute }),
    }),
  updateEnrichedBatchSize: (size: number) =>
    request<{ enriched_batch_size: number }>('/api/settings/preferences/enriched-batch-size', {
      method: 'PUT',
      body: JSON.stringify({ size }),
    }),
  updateIndexDailyBatchSize: (size: number) =>
    request<{ index_daily_batch_size: number }>('/api/settings/preferences/index-daily-batch-size', {
      method: 'PUT',
      body: JSON.stringify({ size }),
    }),

  // 自选列表列配置
  watchlistColumns: () =>
    request<{ columns: any[] | null }>('/api/settings/preferences/watchlist-columns'),
  updateWatchlistColumns: (columns: any[]) =>
    request<{ columns: any[] }>('/api/settings/preferences/watchlist-columns', {
      method: 'PUT',
      body: JSON.stringify({ columns }),
    }),

  // 策略结果列表列配置
  screenerResultColumns: () =>
    request<{ columns: any[] | null }>('/api/settings/preferences/screener-result-columns'),
  updateScreenerResultColumns: (columns: any[]) =>
    request<{ columns: any[] }>('/api/settings/preferences/screener-result-columns', {
      method: 'PUT',
      body: JSON.stringify({ columns }),
    }),

  capabilities: () => request<CapabilitiesResponse>('/api/capabilities'),
  version: () => request<{ version: string }>('/api/data/version'),
  redetectCapabilities: () =>
    request<CapabilitiesResponse>('/api/capabilities/redetect', { method: 'POST' }),

  klineDaily: (symbol: string, days = 120, dateRange?: { start: string; end: string }, extColumns?: string) =>
    request<{
      symbol: string
      name?: string
      stock_info?: { name?: string; total_shares?: number; float_shares?: number; ext?: Record<string, unknown> }
      rows: KlineRow[]
      source?: string
    }>(
      (dateRange
        ? `/api/kline/daily?symbol=${encodeURIComponent(symbol)}&start_date=${dateRange.start}&end_date=${dateRange.end}`
        : `/api/kline/daily?symbol=${encodeURIComponent(symbol)}&days=${days}`)
      + (extColumns ? `&ext_columns=${encodeURIComponent(extColumns)}` : ''),
    ),
  klineDailyBatch: (symbols: string[], days = 12) =>
    request<{ data: Record<string, KlineRow[]> }>('/api/kline/daily-batch', {
      method: 'POST',
      body: JSON.stringify({ symbols, days }),
    }),
  instrumentSearch: (q: string, limit = 20) =>
    request<{ results: { symbol: string; name: string; code: string }[] }>(
      `/api/kline/instruments/search?q=${encodeURIComponent(q)}&limit=${limit}`,
    ),

  /** 批量查股票名称 (传入 symbol 列表, 返回 {symbol: name}) */
  instrumentNames: (symbols: string[]) =>
    request<{ names: Record<string, string> }>('/api/kline/instruments/names', {
      method: 'POST',
      body: JSON.stringify(symbols),
    }),
  klineMinute: (symbol: string, date?: string) =>
    request<{
      symbol: string
      name?: string
      stock_info?: { name?: string; total_shares?: number; float_shares?: number }
      date: string | null
      rows: MinuteKlineRow[]
      source?: 'local' | 'live' | 'none'
    }>(
      `/api/kline/minute?symbol=${encodeURIComponent(symbol)}${date ? `&date=${date}` : ''}`,
    ),
  indexList: () => request<{ results: IndexInstrument[]; count: number }>('/api/index/list'),
  indexSearch: (q: string, limit = 20) =>
    request<{ results: IndexInstrument[] }>(
      `/api/index/search?q=${encodeURIComponent(q)}&limit=${limit}`,
    ),
  indexDaily: (symbol: string, days = 120, dateRange?: { start: string; end: string }) =>
    request<{
      symbol: string
      name?: string
      index_info?: IndexInstrument
      rows: KlineRow[]
      source?: string
    }>(
      dateRange
        ? `/api/index/daily?symbol=${encodeURIComponent(symbol)}&start_date=${dateRange.start}&end_date=${dateRange.end}`
        : `/api/index/daily?symbol=${encodeURIComponent(symbol)}&days=${days}`,
    ),
  indexMinute: (symbol: string, date?: string) =>
    request<{
      symbol: string
      name?: string
      index_info?: IndexInstrument
      date: string | null
      rows: MinuteKlineRow[]
      source?: string
    }>(
      `/api/index/minute?symbol=${encodeURIComponent(symbol)}${date ? `&date=${date}` : ''}`,
    ),
  syncIndexInstruments: () =>
    request<{ status: string; count: number }>('/api/index/sync_instruments', { method: 'POST' }),
  syncIndexDaily: (days = 365) =>
    request<{ status: string; index_count: number; rows_written: number }>(
      `/api/index/sync_daily?days=${days}`,
      { method: 'POST' },
    ),
  syncSymbol: (symbol: string, days = 250) =>
    request<{ symbol: string; rows_written: number }>(
      `/api/kline/sync?symbol=${encodeURIComponent(symbol)}&days=${days}`,
      { method: 'POST' },
    ),
  syncMinute: () =>
    request<{ status: string; job_id: string }>('/api/kline/sync_minute', { method: 'POST' }),
  extendHistory: (value: number, unit: 'day' | 'month' | 'year') =>
    request<{ status: string; job_id: string }>('/api/kline/extend_history', {
      method: 'POST',
      body: JSON.stringify({ value, unit }),
    }),
  extendMinuteHistory: (value: number, unit: 'day' | 'month') =>
    request<{ status: string; job_id: string }>('/api/kline/extend_minute_history', {
      method: 'POST',
      body: JSON.stringify({ value, unit }),
    }),
  rebuildEnriched: () =>
    request<{ status: string; job_id: string }>('/api/kline/rebuild_enriched', {
      method: 'POST',
    }),

  watchlistList: () => request<{ symbols: WatchlistEntry[] }>('/api/watchlist'),
  watchlistAdd: (symbol: string, note = '') =>
    request<{ symbols: WatchlistEntry[] }>('/api/watchlist', {
      method: 'POST',
      body: JSON.stringify({ symbol, note }),
    }),
  watchlistBatchAdd: (symbols: string[], note = '') =>
    request<{ symbols: WatchlistEntry[]; added: number }>('/api/watchlist/batch', {
      method: 'POST',
      body: JSON.stringify({ symbols, note }),
    }),
  watchlistRemove: (symbol: string) =>
    request<{ symbols: WatchlistEntry[] }>(
      `/api/watchlist/${encodeURIComponent(symbol)}`,
      { method: 'DELETE' },
    ),
  watchlistClear: () =>
    request<{ removed: number }>('/api/watchlist', { method: 'DELETE' }),
  watchlistQuotes: () => request<{ quotes: Quote[] }>('/api/watchlist/quotes'),
  watchlistEnriched: (extColumns?: string) =>
    request<{ rows: any[]; as_of: string | null; elapsed_ms: number }>(
      extColumns
        ? `/api/watchlist/enriched?ext_columns=${encodeURIComponent(extColumns)}`
        : '/api/watchlist/enriched',
    ),

  screenerStrategies: () => request<{ presets: ScreenerStrategy[] }>('/api/screener/strategies'),
  screenerRunPreset: (strategy_id: string, pool?: string[], asOf?: string, extColumns?: string) =>
    request<ScreenerResult>('/api/screener/run_preset', {
      method: 'POST',
      body: JSON.stringify({ strategy_id, pool, as_of: asOf ?? null, ext_columns: extColumns || null }),
    }),
  screenerRunCustom: (conditions: string[], orderBy?: string, limit = 30, pool?: string[], extColumns?: string) =>
    request<ScreenerResult>('/api/screener/run', {
      method: 'POST',
      body: JSON.stringify({ conditions, order_by: orderBy, limit, pool, ext_columns: extColumns || null }),
    }),
  screenerRunAll: (asOf?: string, strategyIds?: string[], extColumns?: string) =>
    request<{ as_of: string | null; results: Record<string, { total: number; as_of: string; rows: any[] }> }>(
      '/api/screener/run_all', { method: 'POST', body: JSON.stringify({ as_of: asOf ?? null, strategy_ids: strategyIds ?? null, ext_columns: extColumns || null }) },
    ),
  screenerCached: (extColumns?: string) =>
    request<{ as_of: string | null; results: Record<string, { total: number; as_of: string; rows: any[] }>; today_ever_matched: Record<string, string[]> | null; today_ever_rows: Record<string, Record<string, any>> | null; updated_at: number | null }>(
      extColumns
        ? `/api/screener/cached?ext_columns=${encodeURIComponent(extColumns)}`
        : '/api/screener/cached',
    ),
  marketSnapshot: () =>
    request<{ as_of: string | null; rows: MarketSnapshotRow[] }>('/api/screener/market-snapshot'),
  overviewMarket: (asOf?: string) => request<OverviewMarket>(`/api/overview/market${asOf ? `?as_of=${asOf}` : ''}`),

  limitLadder: (asOf?: string, extColumns?: string, direction?: 'up' | 'down') => {
    const params = new URLSearchParams()
    if (asOf) params.set('as_of', asOf)
    if (extColumns) params.set('ext_columns', extColumns)
    if (direction === 'down') params.set('direction', 'down')
    const qs = params.toString()
    return request<LimitLadderResult>(
      `/api/screener/limit-ladder${qs ? `?${qs}` : ''}`,
    )
  },

  backtestStatus: () => request<{ available: boolean }>('/api/backtest/status'),

  backtestRun: (payload: {
    symbols: string[]
    entries: string[]
    exits: string[]
    start?: string
    end?: string
    stop_loss_pct?: number
    max_hold_days?: number
    matching?: 'close_t' | 'open_t+1'
  }) =>
    request<BacktestResult>('/api/backtest/run', {
      method: 'POST',
      body: JSON.stringify(payload),
    }),

  factorColumns: () =>
    request<{ columns: FactorColumn[] }>('/api/backtest/factor/columns'),

  factorRun: (payload: {
    factor_name: string
    symbols?: string[] | null
    start?: string | null
    end?: string | null
    n_groups?: number
    rebalance?: 'daily' | 'weekly' | 'monthly'
    weight?: 'equal' | 'factor_weight'
    fees_pct?: number
    slippage_bps?: number
  }) =>
    request<FactorBacktestResult>('/api/backtest/factor/run', {
      method: 'POST',
      body: JSON.stringify(payload),
    }),

  strategyBacktestRun: (payload: {
    strategy_id: string
    symbols?: string[] | null
    start?: string | null
    end?: string | null
    params?: Record<string, any> | null
    overrides?: Record<string, any> | null
    matching?: 'close_t' | 'open_t+1'
    entry_fill?: 'close_t' | 'open_t+1' | null
    exit_fill?: 'close_t' | 'open_t+1' | null
    fees_pct?: number
    slippage_bps?: number
    max_positions?: number
    initial_capital?: number
    position_sizing?: 'equal' | 'score_weight'
  }) =>
    request<StrategyBacktestResult>('/api/backtest/strategy/run', {
      method: 'POST',
      body: JSON.stringify(payload),
    }),

  pipelineRun: () => request<{ job_id: string; reused: boolean }>(
    '/api/pipeline/run', { method: 'POST' },
  ),
  pipelineJob: (id: string) => request<PipelineJob>(`/api/pipeline/jobs/${id}`),
  pipelineJobs: (limit = 20) =>
    request<{ active_id: string | null; jobs: PipelineJobSummary[] }>(
      `/api/pipeline/jobs?limit=${limit}`,
    ),

  dataStatus: () => request<DataStatus>('/api/data/status'),
  dataClear: () => request<{ deleted_files: number }>('/api/data/clear', { method: 'POST' }),
  enrichedSchema: (table: string) => request<EnrichedField[]>(`/api/data/schema/${table}`),

  testEndpoint: (url: string, rounds?: number) =>
    request<{
      ok: boolean
      url: string
      rounds: number
      success: number
      median_ms: number | null
      min_ms?: number | null
      max_ms?: number | null
      /** 兼容旧字段,等于 median_ms */
      latency_ms?: number | null
      error?: string
    }>(
      '/api/settings/test_endpoint', {
        method: 'POST',
        body: JSON.stringify({ url, rounds }),
      },
    ),

  // 端点发现 —— 后端代理拉取 tickflow.org/endpoints.json(前端无法跨域直连)
  listEndpoints: () =>
    request<EndpointManifest>('/api/settings/endpoints'),

  switchEndpoint: (url: string) =>
    request<{ ok: boolean; current_endpoint: string; error?: string }>(
      '/api/settings/switch_endpoint', {
        method: 'POST',
        body: JSON.stringify({ url }),
      },
    ),

  // ===== 扩展数据 =====
  extDataList: () =>
    request<{ items: ExtDataConfig[] }>('/api/ext-data'),

  extDataRows: (id: string, opts?: { date?: string; limit?: number; columns?: string[] }) => {
    const qs = new URLSearchParams()
    if (opts?.date) qs.set('date', opts.date)
    if (opts?.limit) qs.set('limit', String(opts.limit))
    if (opts?.columns?.length) qs.set('columns', opts.columns.join(','))
    const suffix = qs.toString()
    return request<ExtDataRowsResult>(`/api/ext-data/${encodeURIComponent(id)}/rows${suffix ? `?${suffix}` : ''}`)
  },

  analysisMenus: () =>
    request<{ items: AnalysisMenu[] }>('/api/analysis-menus'),

  analysisMenu: (id: string) =>
    request<AnalysisMenu>(`/api/analysis-menus/${encodeURIComponent(id)}`),

  analysisMenuSave: (id: string, body: Omit<AnalysisMenu, 'id' | 'created_at' | 'updated_at' | 'builtin'>) =>
    request<AnalysisMenu>(`/api/analysis-menus/${encodeURIComponent(id)}`, {
      method: 'POST',
      body: JSON.stringify(body),
    }),

  analysisMenuReorder: (ids: string[]) =>
    request<{ items: AnalysisMenu[] }>('/api/analysis-menus/reorder', {
      method: 'POST',
      body: JSON.stringify({ ids }),
    }),

  analysisMenuDelete: (id: string) =>
    request<{ status: string }>(`/api/analysis-menus/${encodeURIComponent(id)}`, { method: 'DELETE' }),

  extDataCreate: (body: { id: string; label: string; mode: 'snapshot' | 'timeseries'; fields: { name: string; dtype: string; label: string }[]; description?: string; symbol_map?: Record<string, string>; code_map?: Record<string, string> }) =>
    request<ExtDataConfig>('/api/ext-data', {
      method: 'POST',
      body: JSON.stringify(body),
    }),

  extDataUpdate: (id: string, body: { label?: string; fields?: { name: string; dtype: string; label: string }[]; description?: string }) =>
    request<ExtDataConfig>(`/api/ext-data/${id}`, {
      method: 'PUT',
      body: JSON.stringify(body),
    }),

  extDataDelete: (id: string) =>
    request<{ status: string }>(`/api/ext-data/${id}`, { method: 'DELETE' }),

  extDataUpload: (id: string, file: File, snapshotDate?: string) => {
    const fd = new FormData()
    fd.append('file', file)
    return request<{ status: string; rows: number; date: string }>(
      `/api/ext-data/${id}/upload${snapshotDate ? `?snapshot_date=${snapshotDate}` : ''}`,
      { method: 'POST', body: fd },
    )
  },

  extDataIngest: (id: string, body: { date?: string; rows: Record<string, unknown>[] }) =>
    request<{ status: string; rows: number; date: string }>(
      `/api/ext-data/${id}/ingest`,
      { method: 'POST', body: JSON.stringify(body) },
    ),

  extDataSchemaAll: () =>
    request<{ items: { id: string; label: string; mode: string; columns: { name: string; type: string; label: string }[] }[] }>('/api/ext-data/schema-all'),

  extDataPullConfig: (id: string, body: {
    url: string; method?: string; headers?: Record<string, string>; body?: string;
    response_path?: string; field_map?: Record<string, string>;
    schedule_minutes?: number; enabled?: boolean;
  }) =>
    request<{ status: string; pull: PullConfig }>(
      `/api/ext-data/${id}/pull`,
      { method: 'PUT', body: JSON.stringify(body) },
    ),

  extDataPullTest: (id: string) =>
    request<{ status: string; total_rows: number; preview: Record<string, unknown>[]; has_symbol: boolean }>(
      `/api/ext-data/${id}/pull/test`,
      { method: 'POST' },
    ),

  extDataPullRun: (id: string) =>
    request<{ status: string; rows: number; date: string }>(
      `/api/ext-data/${id}/pull/run`,
      { method: 'POST' },
    ),

  extDataDetectFields: (file: File) => {
    const fd = new FormData()
    fd.append('file', file)
    return request<{ fields: { name: string; dtype: string; label: string }[]; rows: number; symbol_candidates: string[]; code_candidates: string[] }>(
      '/api/ext-data/detect-fields',
      { method: 'POST', body: fd },
    )
  },

  extDataFixSymbol: (id: string) =>
    request<{ status: string; fixed_files: number }>(
      `/api/ext-data/${id}/fix-symbol`,
      { method: 'POST' },
    ),

  // ===== Financials =====
  financialStatus: () =>
    request<FinancialStatus>('/api/financials/status'),

  financialMetrics: (symbol?: string) =>
    request<{ data: FinancialMetricRecord[] }>(
      `/api/financials/metrics${symbol ? `?symbol=${encodeURIComponent(symbol)}` : ''}`,
    ),

  financialIncome: (symbol?: string) =>
    request<{ data: FinancialIncomeRecord[] }>(
      `/api/financials/income${symbol ? `?symbol=${encodeURIComponent(symbol)}` : ''}`,
    ),

  financialBalanceSheet: (symbol?: string) =>
    request<{ data: FinancialBalanceSheetRecord[] }>(
      `/api/financials/balance-sheet${symbol ? `?symbol=${encodeURIComponent(symbol)}` : ''}`,
    ),

  financialCashFlow: (symbol?: string) =>
    request<{ data: FinancialCashFlowRecord[] }>(
      `/api/financials/cash-flow${symbol ? `?symbol=${encodeURIComponent(symbol)}` : ''}`,
    ),

  financialSync: (table: string) =>
    request<{ status: string; synced: Record<string, number> }>(
      `/api/financials/sync/${table}`, { method: 'POST' },
    ),

  // ===== Strategy Engine =====
  strategyList: () =>
    request<{ strategies: StrategyDetail[] }>('/api/strategies'),

  strategyGet: (id: string) =>
    request<StrategyDetail>(`/api/strategies/${id}`),

  strategyRun: (strategyId: string, params?: Record<string, any>, asOf?: string, pool?: string[]) =>
    request<ScreenerResult>('/api/strategies/run', {
      method: 'POST',
      body: JSON.stringify({ strategy_id: strategyId, params, as_of: asOf ?? null, pool }),
    }),

  strategyRunAll: (asOf?: string) =>
    request<{ as_of: string | null; results: Record<string, { total: number; as_of: string }> }>(
      '/api/strategies/run-all',
      { method: 'POST', body: JSON.stringify({ as_of: asOf ?? null }) },
    ),

  strategySaveConfig: (strategyId: string, overrides: Record<string, any>) =>
    request<{ ok: boolean }>('/api/strategies/config', {
      method: 'POST',
      body: JSON.stringify({ strategy_id: strategyId, overrides }),
    }),

  strategyResetConfig: (strategyId: string) =>
    request<{ ok: boolean }>(`/api/strategies/config/${strategyId}`, { method: 'DELETE' }),

  /** 删除自定义策略（内置策略不可删除） */
  strategyDelete: (strategyId: string) =>
    request<{ ok: boolean }>(`/api/strategies/${strategyId}`, { method: 'DELETE' }),

  strategyReload: () =>
    request<{ ok: boolean; count: number }>('/api/strategies/reload', { method: 'POST' }),

  // ===== Custom Signals (自定义信号) =====
  customSignalsList: () =>
    request<{ signals: CustomSignal[] }>('/api/custom-signals'),

  customSignalsOptions: () =>
    request<CustomSignalOptions>('/api/custom-signals/options'),

  customSignalSave: (signal: CustomSignal) =>
    request<{ ok: boolean; signal: CustomSignal }>('/api/custom-signals', {
      method: 'POST',
      body: JSON.stringify(signal),
    }),

  customSignalDelete: (id: string) =>
    request<{ ok: boolean }>(`/api/custom-signals/${encodeURIComponent(id)}`, { method: 'DELETE' }),

  // ===== Monitor Rules (监控规则) =====
  monitorRulesList: () =>
    request<{ rules: MonitorRule[] }>('/api/monitor-rules'),

  monitorRuleOptions: () =>
    request<MonitorRuleOptions>('/api/monitor-rules/options'),

  monitorRuleSave: (rule: MonitorRule) =>
    request<{ ok: boolean; rule: MonitorRule }>('/api/monitor-rules', {
      method: 'POST',
      body: JSON.stringify(rule),
    }),

  monitorRuleDelete: (id: string) =>
    request<{ ok: boolean }>(`/api/monitor-rules/${encodeURIComponent(id)}`, { method: 'DELETE' }),

  /** 生成演示监控规则 (Dev 页用) */
  monitorRuleSeed: () =>
    request<{ ok: boolean; generated: number }>('/api/monitor-rules/seed', { method: 'POST' }),

  // ===== Alerts (触发记录) =====
  alertsList: (params?: { days?: number; limit?: number; source?: string; type?: string }) => {
    const qs = new URLSearchParams()
    if (params?.days) qs.set('days', String(params.days))
    if (params?.limit) qs.set('limit', String(params.limit))
    if (params?.source) qs.set('source', params.source)
    if (params?.type) qs.set('type', params.type)
    const s = qs.toString()
    return request<{ alerts: AlertEvent[]; total: number }>(`/api/alerts${s ? `?${s}` : ''}`)
  },

  alertsClear: () =>
    request<{ ok: boolean; cleared: number }>('/api/alerts', { method: 'DELETE' }),

  alertDelete: (ts: number) =>
    request<{ ok: boolean }>(`/api/alerts/${ts}`, { method: 'DELETE' }),

  /** 生成演示触发记录 (Dev 页用) */
  alertSeed: (count = 12, recent = true) =>
    request<{ ok: boolean; generated: number }>(`/api/alerts/seed?count=${count}&recent=${recent}`, { method: 'POST' }),

  /** 检查 AI 配置状态 */
  strategyAiStatus: () =>
    request<{ configured: boolean; has_key: boolean; has_model: boolean }>('/api/strategies/ai/status'),

  /** 测试 AI 连通性 */
  strategyAiTest: () =>
    request<{ ok: boolean; error?: string; model?: string; usage?: { prompt: number; completion: number } }>(
      '/api/strategies/ai/test',
      { method: 'POST' },
    ),

  /** 获取策略源文件内容 */
  strategyGetSource: (id: string) =>
    request<{ code: string; source: string }>(`/api/strategies/${id}/source`),
  strategyBuild: (step: number, payload: Record<string, any>) =>
    request<{ code: string; meta: Record<string, any>; valid: boolean; error: string | null }>(
      '/api/strategies/build',
      { method: 'POST', body: JSON.stringify({ step, ...payload }) },
    ),

  /** 保存 AI 生成的策略文件 */
  strategySaveCode: (strategyId: string, code: string) =>
    request<{ ok: boolean; path: string }>('/api/strategies/ai/save', {
      method: 'POST',
      body: JSON.stringify({ strategy_id: strategyId, code }),
    }),
}

// ===== Pipeline =====
export interface PipelineJob {
  id: string
  status: 'pending' | 'running' | 'succeeded' | 'failed'
  stage: string
  progress: number          // 0-100 整体进度
  stage_pct: number         // 0-100 当前阶段内进度
  log: { ts: string; stage: string; msg: string }[]
  started_at: string | null
  finished_at: string | null
  duration_s: number | null
  result: {
    universe_size: number
    daily_days: number
    adj_factor_symbols: number
    enriched_days: number
    index_count?: number
    index_daily_rows?: number
    minute_rows: number
    skipped_stages?: string[]
  } | null
  error: string | null
}

export type PipelineJobSummary = Omit<PipelineJob, 'log'>

// ===== Data status =====
interface TableStats {
  rows: number
  earliest_date: string | null
  latest_date: string | null
  symbols_covered: number
  trading_days: number
}

interface InstrumentsStats {
  rows: number
  symbols_covered: number
  latest_as_of: string | null
  named: number
}

export interface DataStatus {
  daily: TableStats | null
  enriched: TableStats | null
  index_daily: TableStats | null
  index_enriched: TableStats | null
  index_instruments: InstrumentsStats | null
  minute: TableStats | null
  adj_factor: TableStats | null
  instruments: InstrumentsStats | null
  financials: { rows: number; tables: Record<string, { rows: number; symbols: number }> } | null
  storage: {
    daily_files: number
    daily_size_mb: number
    enriched_files: number
    enriched_size_mb: number
    index_daily_files?: number
    index_daily_size_mb?: number
    index_enriched_files?: number
    index_enriched_size_mb?: number
    index_instruments_files?: number
    index_instruments_size_mb?: number
    minute_files: number
    minute_size_mb: number
    adj_factor_files: number
    adj_factor_size_mb: number
    instruments_files: number
    instruments_size_mb: number
    financials_files?: number
    financials_size_mb?: number
    ext_data_files?: number
    ext_data_size_mb?: number
    total_size_mb: number
  }
  next_pipeline_run: string | null
  next_instruments_run: string | null
  last_pipeline_run: string | null
  last_instruments_run: string | null
  checked_at: string
}

export interface EnrichedField {
  name: string
  type: string
  desc: string
}

// ===== 扩展数据 =====
export interface ExtDataField {
  name: string
  dtype: string
  label: string
}

export interface PullConfig {
  url: string
  method: string
  headers?: Record<string, string>
  body?: string | null
  response_path: string
  field_map?: Record<string, string>
  schedule_minutes: number
  enabled: boolean
  last_run?: string | null
  last_status?: string | null
  last_message?: string | null
  last_rows?: number | null
}

export interface ExtDataConfig {
  id: string
  label: string
  mode: 'snapshot' | 'timeseries'
  fields: ExtDataField[]
  description?: string
  symbol_map?: Record<string, string>
  code_map?: Record<string, string>
  created_at: string
  updated_at: string
  latest_sync_date?: string | null
  date_range?: string[] | null
  pull?: PullConfig | null
}

export interface ExtDataRowsResult {
  id: string
  label: string
  mode: 'snapshot' | 'timeseries'
  date: string | null
  total: number
  limit: number
  fields: ExtDataField[]
  rows: Record<string, any>[]
}

export interface AnalysisColumn {
  field: string
  label?: string
  type?: 'string' | 'number' | 'percent' | 'amount' | 'date'
  width?: number | null
  sortable?: boolean
  precision?: number | null
  format?: string | null
  aggregate?: 'count' | 'avg' | 'sum' | 'min' | 'max' | null
  visible?: boolean
}

export interface AnalysisMenu {
  id: string
  label: string
  icon: string
  data_source: string
  template: 'dimension_rank' | 'ranking' | 'table'
  dimension_field?: string | null
  rank_field?: string | null
  group_columns: AnalysisColumn[]
  detail_columns: AnalysisColumn[]
  default_sort?: { field: string; order: 'asc' | 'desc' } | null
  visible: boolean
  order: number
  created_at?: string | null
  updated_at?: string | null
  builtin?: boolean
}
