import { apiClient } from './client'

export interface StrategyCfg {
  name: string
  params: Record<string, unknown>
  match_session: string
  symbol: string
  listing_days?: number
}

export interface PaperCreate {
  mode: string
  interval: string
  symbols: string[]
  strategies: StrategyCfg[]
  initial_capital: number
  start: string
  end: string
}

export interface PaperAccount {
  id: number
  name: string
  mode: string
  interval: string
  status: string
  symbols?: string
  initial_capital?: number
  start_date?: string
  end_date?: string
  last_run_date?: string | null
  next_run_at?: string | null
  checkpoint_date?: string | null
  error_msg?: string | null
  /** 列表端点附带的最新净值 / 收益（单账户 GET 不含） */
  latest_equity?: number | null
  latest_date?: string | null
  total_return?: number | null
  instance?: string
}

export interface BalancePoint {
  date: string
  cash: number
  market_value: number
  total_equity: number
  is_checkpoint: number
}

export interface PaperTrade {
  strategy_id: string
  symbol: string
  direction: string
  price: number
  volume: number
  commission: number
  rejected: number
  reject_reason: string
  bar_date: string
}

export interface StrategySummary {
  strategy_id: string
  total_orders: number
  filled: number
  rejected: number
  commission: number
}

export interface PositionRow {
  symbol: string
  volume: number
  frozen: number
  avg_price: number
}

export interface PendingOrder {
  strategy_id: string
  symbol: string
  side: string
  price: number
  volume: number
  is_market: boolean
  match_session: string
  listing_days: number
}

export async function createPaper(req: PaperCreate): Promise<number> {
  const { data } = await apiClient.post<{ account_id: number }>('/paper/create', req)
  return data.account_id
}

export async function listPapers(): Promise<PaperAccount[]> {
  const { data } = await apiClient.get<{ accounts: PaperAccount[] }>('/paper')
  return data.accounts
}

export async function getPaper(aid: number): Promise<PaperAccount> {
  const { data } = await apiClient.get<PaperAccount>(`/paper/${aid}`)
  return data
}

export async function getEquity(aid: number): Promise<BalancePoint[]> {
  const { data } = await apiClient.get<BalancePoint[]>(`/paper/${aid}/equity`)
  return data
}

export async function getTrades(aid: number): Promise<PaperTrade[]> {
  const { data } = await apiClient.get<PaperTrade[]>(`/paper/${aid}/trades`)
  return data
}

export async function getStrategies(aid: number): Promise<StrategySummary[]> {
  const { data } = await apiClient.get<StrategySummary[]>(`/paper/${aid}/strategies`)
  return data
}

export async function getPositions(aid: number): Promise<PositionRow[]> {
  const { data } = await apiClient.get<PositionRow[]>(`/paper/${aid}/positions`)
  return data
}

export async function getPending(aid: number): Promise<PendingOrder[]> {
  const { data } = await apiClient.get<PendingOrder[]>(`/paper/${aid}/pending`)
  return data
}