import axios, { AxiosError } from 'axios'
import { appEnv } from '@/config/env'
import type { ApiResult } from '@/types/http'
import { BizError } from '@/types/http'
import { redirectToLogin } from '@/utils/auth-session'
import { appMessage } from '@/utils/message'
import { useAuthStore } from '@/stores/auth'

const AUTH_ERROR_CODES = new Set([
  'AUTH.UNAUTHORIZED',
  'AUTH.TOKEN_VERSION_INVALID',
  'AUTH.USER_DISABLED',
  'AUTH.USERNAME_OR_PASSWORD_INVALID'
])

const http = axios.create({
  baseURL: appEnv.apiBaseUrl,
  timeout: 15000
})

http.interceptors.request.use((config) => {
  const authStore = useAuthStore()
  const token = authStore.token
  if (token) {
    config.headers.Authorization = `Bearer ${token}`
  }
  return config
})

http.interceptors.response.use(
  async (response) => {
    const payload = response.data as ApiResult<unknown>
    const traceId = response.headers['x-trace-id'] as string | undefined

    if (!payload || typeof payload.code !== 'string') {
      return response.data
    }

    if (payload.code === '0') {
      return payload.data
    }

    const errorMessage = payload.message || '请求失败'
    const resolvedTraceId = payload.traceId ?? traceId

    if (AUTH_ERROR_CODES.has(payload.code)) {
      await redirectToLogin('expired')
      appMessage.warning(errorMessage)
      throw new BizError(payload.code, errorMessage, resolvedTraceId)
    }

    appMessage.error(
      resolvedTraceId ? `${errorMessage}（追踪ID：${resolvedTraceId}）` : errorMessage
    )
    throw new BizError(payload.code, errorMessage, resolvedTraceId)
  },
  async (error: AxiosError<ApiResult<unknown>>) => {
    const status = error.response?.status
    const traceId =
      (error.response?.headers?.['x-trace-id'] as string | undefined) ??
      error.response?.data?.traceId
    const backendMessage = error.response?.data?.message

    if (status === 401) {
      const errorMessage = backendMessage ?? '未登录或登录已失效，请重新登录'
      await redirectToLogin('expired')
      appMessage.warning(errorMessage)
      return Promise.reject(new BizError('401', errorMessage, traceId))
    }

    if (status === 403) {
      const errorMessage = backendMessage ?? '无权限访问该资源'
      console.warn('[HTTP] 收到 403 响应', {
        url: error.config?.url,
        message: backendMessage
      })
      appMessage.error(errorMessage)
      return Promise.reject(new BizError('403', errorMessage, traceId))
    }

    const errorMessage = backendMessage ?? error.message ?? '网络异常，请稍后重试'
    appMessage.error(traceId ? `${errorMessage}（追踪ID：${traceId}）` : errorMessage)
    return Promise.reject(new BizError(String(status ?? 'HTTP_ERROR'), errorMessage, traceId))
  }
)

export default http