/**
 * OMS admin 接口通用：与 /order 同源（开发环境走 Vite 代理路径前缀）
 */
import type { AxiosError } from 'axios'
import { axiosInstance } from '@/api/rbac'
import { resolveAdminApiPath, resolveAdminAssetOrigin } from '@/utils/adminApi'

/** 从 axios / 业务响应中提取可读错误信息 */
export function extractOmsRequestError(err: unknown): string {
  const axiosErr = err as AxiosError<{ msg?: string; Msg?: string; message?: string; Message?: string }>
  const data = axiosErr?.response?.data
  if (data && typeof data === 'object') {
    const msg = data.msg ?? data.Msg ?? data.message ?? data.Message
    if (msg != null && String(msg).trim()) {
      return String(msg).trim()
    }
  }
  return err instanceof Error ? err.message : String(err)
}

export function omsUrl(path: string): string {
  return resolveAdminApiPath(path)
}

export function assertBusinessOk(body: any) {
  if (body == null) throw new Error('空响应')
  const code = body.code ?? body.Code
  const ok =
    code === undefined ||
    code === null ||
    code === 0 ||
    code === 200 ||
    code === '0' ||
    code === '200' ||
    body.success === true ||
    body.Success === true
  if (!ok) {
    throw new Error(body.msg ?? body.Msg ?? body.message ?? body.Message ?? '请求失败')
  }
}

/** 分页列表载荷（兼容 camel/Pascal、items/list/records） */
export function parseListPayload(resBody: any): { items: any[]; total: number } {
  assertBusinessOk(resBody)
  const inner = resBody.data ?? resBody.Data ?? resBody
  if (Array.isArray(inner)) {
    return { items: inner, total: inner.length }
  }
  const payload =
    inner && typeof inner === 'object' && !Array.isArray(inner) ? inner : resBody

  const items =
    payload.items ??
    payload.Items ??
    payload.list ??
    payload.List ??
    payload.records ??
    payload.Records ??
    payload.rows ??
    payload.Rows ??
    payload.result ??
    payload.Result ??
    (Array.isArray(payload.data) ? payload.data : undefined) ??
    (Array.isArray(payload.Data) ? payload.Data : undefined) ??
    []

  const totalRaw =
    payload.total ??
    payload.Total ??
    payload.totalCount ??
    payload.TotalCount ??
    payload.count ??
    payload.Count

  const list = Array.isArray(items) ? items : []
  const total =
    typeof totalRaw === 'number'
      ? totalRaw
      : totalRaw != null && totalRaw !== ''
        ? Number(totalRaw)
        : list.length

  return { items: list, total: Number.isFinite(total) ? total : list.length }
}

export function unwrapData<T = any>(resBody: any): T {
  assertBusinessOk(resBody)
  const nested = resBody.data ?? resBody.Data
  if (nested !== undefined && nested !== null) {
    return nested as T
  }
  // 部分 OMS 接口直接返回业务 DTO，无 data 包裹
  return resBody as T
}

export async function omsGet<T = any>(path: string, params?: Record<string, any>): Promise<T> {
  const res = await axiosInstance.get(omsUrl(path), { params })
  return unwrapData<T>(res.data)
}

export async function omsPost<T = any>(path: string, body?: Record<string, any>): Promise<T> {
  const res = await axiosInstance.post(omsUrl(path), body ?? {})
  return unwrapData<T>(res.data)
}

/**
 * COS 绝对地址 → 同源 `/__cos__/<host>/...`（开发 Vite / 生产 nginx 反代）。
 * cos.ideship.com 等自定义域名 https 不可用，直链 http 又会在 https 页面触发混合内容。
 */
function toCosSameOriginProxyUrl(absoluteUrl: string): string | null {
  try {
    const u = new URL(absoluteUrl)
    const host = u.hostname.toLowerCase()
    if (!host.startsWith('cos.') && !host.includes('myqcloud.com')) return null
    return `/__cos__/${u.host}${u.pathname}${u.search}`
  } catch {
    return null
  }
}

/** 将 /uploads/... 相对路径转为可访问 URL（同源相对，或 VITE_API_ASSET_ORIGIN 绝对前缀） */
export function resolveOmsAssetUrl(path?: string | null): string {
  if (!path) return ''
  const value = path.trim()
  if (!value) return ''
  if (/^https?:\/\//i.test(value) || value.startsWith('data:') || value.startsWith('blob:')) {
    const cosProxied = toCosSameOriginProxyUrl(value)
    if (cosProxied) return cosProxied
    // 纠正常见错链：api.nanafa.com/uploads → api.nanafa.com/admin/uploads
    return value.replace(
      /^(https?:\/\/api\.(?:nanafa|ideship)\.com)\/uploads\//i,
      '$1/admin/uploads/',
    )
  }
  const origin = resolveAdminAssetOrigin()
  const rel = value.startsWith('/') ? value : `/${value}`
  return origin ? `${origin}${rel}` : rel
}