import { apiRequest } from '@/api/http'

export interface PageResult<T> {
  records: T[]
  total: number
  page: number
  size: number
  pages: number
}

interface PageResultWire<T> extends Omit<PageResult<T>, 'total' | 'page' | 'size' | 'pages'> {
  total: number | string
  page: number | string
  size: number | string
  pages: number | string
}

function normalizePageResult<T>(result: PageResultWire<T>): PageResult<T> {
  return {
    ...result,
    total: Number(result.total),
    page: Number(result.page),
    size: Number(result.size),
    pages: Number(result.pages),
  }
}

export interface FinanceAccount {
  currencyCode: 'CNY'
  actualBalance: string
  frozenBalance: string
  availableBalance: string
  creditLimit: string
  creditUsed: string
  creditFrozen: string
  availableCredit: string
  creditExpiresOn: string | null
  creditActive: boolean
  version: number
  updatedAt: string
}

export type AccountChangeType = 'RECHARGE' | 'DEDUCTION' | 'FREEZE' | 'UNFREEZE' | 'CONSUMPTION' | 'CREDIT_LIMIT'

export interface AccountLedgerEntry {
  ledgerId: string
  businessNo: string
  changeType: AccountChangeType
  amount: string
  actualBalanceAfter: string
  frozenBalanceAfter: string
  availableBalanceAfter: string
  creditLimitAfter: string
  creditUsedAfter: string
  availableCreditAfter: string
  creditExpiresOnAfter: string | null
  sourceType: 'CLIENT_RECHARGE' | 'MANUAL_RECHARGE' | 'MANUAL_DEDUCTION' | 'CREDIT_LIMIT_ADJUSTMENT' | string
  sourceNo: string
  operatorName: string | null
  remark: string | null
  createdAt: string
}

export type RechargeStatus = 'PENDING' | 'APPROVED' | 'REJECTED'

export interface RechargeRequest {
  requestId: string
  requestNo: string
  amount: string
  voucherFileId: string
  voucherFileName: string
  status: RechargeStatus
  version: number
  submittedByName: string | null
  reviewedByName: string | null
  reviewRemark: string | null
  createdAt: string
  reviewedAt: string | null
}

export function getFinanceAccount() {
  return apiRequest<FinanceAccount>({ method: 'GET', url: '/client/finance/v1/account' })
}

export async function getAccountLedger(page: number, size: number) {
  const result = await apiRequest<PageResultWire<AccountLedgerEntry>>({
    method: 'GET',
    url: '/client/finance/v1/account/ledger',
    params: { page, size },
  })
  return normalizePageResult(result)
}

export async function getRechargeRequests(page: number, size: number) {
  const result = await apiRequest<PageResultWire<RechargeRequest>>({
    method: 'GET',
    url: '/client/finance/v1/recharge-requests',
    params: { page, size },
  })
  return normalizePageResult(result)
}

export function createRechargeRequest(amount: string, file: File, idempotencyKey: string) {
  const formData = new FormData()
  formData.append('amount', amount)
  formData.append('file', file, file.name)
  return apiRequest<RechargeRequest>({
    method: 'POST',
    url: '/client/finance/v1/recharge-requests',
    headers: { 'Idempotency-Key': idempotencyKey },
    data: formData,
  })
}