const { APP_API_BASE_URL, WECHAT_APP_ID } = require('../config/env.js')

const TOKEN_KEY = 'qipai_access_token'

function request(path, options = {}) {
  return new Promise((resolve, reject) => {
    const token = wx.getStorageSync(TOKEN_KEY)
    wx.request({
      url: `${APP_API_BASE_URL}${path}`,
      method: options.method || 'GET',
      data: options.data,
      header: {
        'x-wechat-appid': WECHAT_APP_ID,
        ...(token ? { authorization: `Bearer ${token}` } : {}),
        ...(options.headers || {}),
      },
      success(response) {
        if (response.statusCode >= 200 && response.statusCode < 300) {
          resolve(response.data)
          return
        }
        reject(new Error(response.data?.message || `请求失败：${response.statusCode}`))
      },
      fail: reject,
    })
  })
}

function login() {
  return new Promise((resolve, reject) => {
    wx.login({
      success: async ({ code }) => {
        try {
          const response = await request('/auth/wechat-login', {
            method: 'POST',
            data: { code },
          })
          wx.setStorageSync(TOKEN_KEY, response.data.accessToken)
          resolve(response.data)
        } catch (error) {
          reject(error)
        }
      },
      fail: reject,
    })
  })
}

function ensureLogin() {
  const token = wx.getStorageSync(TOKEN_KEY)
  if (token) return Promise.resolve({ accessToken: token })
  return login()
}

function clearSession() {
  wx.removeStorageSync(TOKEN_KEY)
}

function cents(value) {
  return `￥${((Number(value || 0)) / 100).toFixed(2)}`
}

function clientRequestId(prefix) {
  return `${prefix}-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
}

module.exports = {
  request,
  login,
  ensureLogin,
  clearSession,
  cents,
  clientRequestId,
}