/* 碰盏日记 - API 服务层
 * 基于 HaveADrink SDK 封装后端接口
 */
import HaveADrink from 'HaveADrink'

// ==========================================
// 后端服务地址（切换环境只需改这里）
// ==========================================
const API_HOST = 'https://dev.wash-painting.cn'

// ==========================================
// HTTP 请求函数（供 SDK 内部调用）
// 参考 goodBooth 项目的 fetchsomething
// ==========================================
function httpRequest(url, params) {
  // 支持静默模式（如后台刷新token），不弹 toast 不跳转
  const silent = params.silent === true
  return new Promise((resolve, reject) => {
    // 自动注入 Authorization token
    const headers = Object.assign({}, params.headers || {})
    const token = uni.getStorageSync('auth_token')
    if (token) {
      headers['Authorization'] = `Bearer ${token}`
    }

    uni.request({
      url: url,
      method: params.method,
      params: params.query || undefined,
      data: params.data,
      header: headers,
      success: (res) => {
        const code = res.statusCode
        if (code === 200 || code === 201 || code === 204) {
          resolve(res.data)
        } else if (code === 401 || code === 418) {
          // token/refresh_token 过期或无效，清除登录态
          uni.removeStorageSync('auth_token')
          uni.removeStorageSync('refresh_token')
          uni.removeStorageSync('is_logged_in')
          if (!silent) {
            uni.reLaunch({ url: '/pages/login/login' })
            uni.showToast({ title: '登录已过期，请重新登录', icon: 'none', duration: 2500 })
          }
          reject({ msg: '登录已过期，请重新登录', code })
        } else {
          const rawMsg = (res.data && res.data.msg) || (res.data && res.data.errmsg) || '请求失败'
          const errMsg = `[${code}] ${rawMsg}`
          if (!silent) {
            uni.showToast({ title: errMsg, icon: 'none', duration: 2500 })
          }
          reject({ msg: errMsg, code })
        }
      },
      fail: (err) => {
        const msg = (err && err.errMsg) || '网络请求失败'
        if (!silent) {
          uni.showToast({ title: msg, icon: 'none', duration: 2500 })
        }
        reject({ msg })
      }
    })
  })
}

// ==========================================
// 文件上传函数（供 SDK 内部调用）
// ==========================================
function uploadRequest(url, params) {
  return new Promise((resolve, reject) => {
    const headers = Object.assign({}, params.headers || {})
    const token = uni.getStorageSync('auth_token')
    if (token) {
      headers['Authorization'] = `Bearer ${token}`
    }

    uni.uploadFile({
      url: url,
      filePath: params.data.fileName || params.data.filePath,
      name: params.data.name || 'file',
      header: headers,
      formData: params.data.formData || {},
      success: (uploadRes) => {
        try {
          const data = typeof uploadRes.data === 'string'
            ? JSON.parse(uploadRes.data)
            : uploadRes.data
          resolve(data)
        } catch (e) {
          resolve(uploadRes.data)
        }
      },
      fail: (err) => {
        reject({ msg: err.errMsg || '上传失败' })
      }
    })
  })
}

// ==========================================
// 初始化 SDK 实例
// ==========================================
const client = new HaveADrink({
  host: API_HOST,
  http_request: httpRequest,
  upload: uploadRequest,
  token: uni.getStorageSync('auth_token') || ''
})

// ==========================================
// 导出 SDK 实例（各页面直接 import 使用）
// ==========================================
export default client

// ==========================================
// Token 管理辅助函数
// ==========================================

/** 登录成功后保存 token 并同步到 SDK */
export function saveAuthTokens(data) {
  if (data.token) {
    uni.setStorageSync('auth_token', data.token)
    client.setToken(data.token)
  }
  if (data.refresh_token) {
    uni.setStorageSync('refresh_token', data.refresh_token)
  }
}

/** 清除所有认证信息 */
export function clearAuth() {
  uni.removeStorageSync('auth_token')
  uni.removeStorageSync('refresh_token')
  uni.removeStorageSync('is_logged_in')
  uni.removeStorageSync('is_guest')
  uni.removeStorageSync('user_info')
  client.setToken('')
}

/** 尝试用 refresh_token 刷新 token（静默，不弹提示不跳转） */
export async function refreshAuthToken() {
  const refreshToken = uni.getStorageSync('refresh_token')
  if (!refreshToken) return false
  try {
    const res = await client.RefreshToken({ refresh_token: refreshToken, silent: true })
    if (res && res.token) {
      saveAuthTokens(res)
      return true
    }
    return false
  } catch (e) {
    // 静默失败：refresh token 无效时清除残留凭证
    uni.removeStorageSync('refresh_token')
    return false
  }
}

// ==========================================
// 酒友圈 API（当前返回 Mock 数据，后端就绪后切换为 SDK 调用）
// ==========================================
import { MOCK_FEEDS, MOCK_COMMENTS, MOCK_FRIENDS, MOCK_FRIEND_REQUESTS, MOCK_EVENTS, MOCK_CONVERSATIONS, MOCK_MESSAGES } from './mock-data'

/** 模拟网络延迟 */
function mockDelay(data, ms = 300) {
  return new Promise(resolve => setTimeout(() => resolve({ data }), ms))
}

/** 获取动态信息流 */
export function GetCircleFeeds({ page = 1, pageSize = 10 } = {}) {
  // TODO: 后端就绪后替换为 client.GetCircleFeeds(...)
  const start = (page - 1) * pageSize
  const list = MOCK_FEEDS.slice(start, start + pageSize)
  return mockDelay({ list, total: MOCK_FEEDS.length, hasMore: start + pageSize < MOCK_FEEDS.length })
}

/** 点赞动态 */
export function LikeFeed({ feedId }) {
  return mockDelay({ success: true })
}

/** 取消点赞 */
export function UnlikeFeed({ feedId }) {
  return mockDelay({ success: true })
}

/** 获取动态评论 */
export function GetFeedComments({ feedId }) {
  const list = MOCK_COMMENTS[feedId] || []
  return mockDelay({ list })
}

/** 发表评论 */
export function AddComment({ feedId, content }) {
  return mockDelay({ success: true, comment: { id: 'c_' + Date.now(), content, time: '刚刚' } })
}

/** 发布动态 */
export function PublishFeed({ text, images, recordId, visibility }) {
  return mockDelay({ success: true, feedId: 'feed_' + Date.now() })
}

/** 获取酒友列表 */
export function GetFriends({ keyword = '' } = {}) {
  const list = keyword
    ? MOCK_FRIENDS.filter(f => f.nickname.includes(keyword))
    : MOCK_FRIENDS
  return mockDelay({ list })
}

/** 获取好友请求 */
export function GetFriendRequests() {
  return mockDelay({ list: MOCK_FRIEND_REQUESTS })
}

/** 发送好友请求 */
export function SendFriendRequest({ userId }) {
  return mockDelay({ success: true })
}

/** 接受好友请求 */
export function AcceptFriendRequest({ requestId }) {
  return mockDelay({ success: true })
}

/** 删除酒友 */
export function RemoveFriend({ userId }) {
  return mockDelay({ success: true })
}

/** 获取酒局列表 */
export function GetEvents({ status = '' } = {}) {
  const list = status ? MOCK_EVENTS.filter(e => e.status === status) : MOCK_EVENTS
  return mockDelay({ list })
}

/** 获取酒局详情 */
export function GetEventDetail({ eventId }) {
  const evt = MOCK_EVENTS.find(e => e.id === eventId) || MOCK_EVENTS[0]
  return mockDelay(evt)
}

/** 发起酒局 */
export function CreateEvent({ title, time, location, maxPeople, note }) {
  return mockDelay({ success: true, eventId: 'evt_' + Date.now() })
}

/** 报名酒局 */
export function JoinEvent({ eventId }) {
  return mockDelay({ success: true })
}

/** 取消报名 */
export function QuitEvent({ eventId }) {
  return mockDelay({ success: true })
}

/** 酒局签到 */
export function CheckInEvent({ eventId }) {
  return mockDelay({ success: true })
}

// ==========================================
// 私信 API（当前返回 Mock 数据，后端就绪后切换为 SDK 调用）
// ==========================================

/** 获取会话列表 */
export function GetConversations() {
  // TODO: 后端就绪后替换为 client.GetConversations(...)
  return mockDelay({ list: MOCK_CONVERSATIONS })
}

/** 获取历史消息 */
export function GetMessages({ conversationId, page = 1, pageSize = 20 } = {}) {
  // TODO: 后端就绪后替换为 client.GetMessages(...)
  const all = MOCK_MESSAGES[conversationId] || []
  const start = (page - 1) * pageSize
  const list = all.slice(start, start + pageSize)
  return mockDelay({ list, hasMore: start + pageSize < all.length })
}

/** 标记会话已读 */
export function MarkRead({ conversationId }) {
  // TODO: 后端就绪后替换为 client.MarkRead(...)
  return mockDelay({ success: true })
}

/** 获取未读消息总数 */
export function GetUnreadCount() {
  // TODO: 后端就绪后替换为 client.GetUnreadCount(...)
  const total = MOCK_CONVERSATIONS.reduce((sum, c) => sum + c.unread, 0)
  return mockDelay({ total })
}