import store from '@/store'
import Config from '@/core/config'
import storage from '@/utils/storage'
import * as SettingApi from '@/api/setting'
import SettingKeyEnum from '@/common/enum/setting/Key'
import platform from '@/core/platform'

const CACHE_KEY = 'Setting'
const OTHER = '_other'

// 写入缓存, 到期时间10分钟
const setStorage = (data) => {
  const expireTime = 10 * 60
  storage.set(CACHE_KEY, data, expireTime)
}

// 获取缓存中的数据
const getStorage = () => {
  return storage.get(CACHE_KEY)
}

// 获取后端接口商城设置 (最新)
const getApiData = () => {
  return new Promise((resolve, reject) => {
    SettingApi.data()
      .then(result => {
        resolve(result.data.setting)
      })
  })
}

/**
 * 获取商城设置
 * 有缓存的情况下返回缓存, 没有缓存从后端api获取
 * @param {bool} isCache 是否从缓存中获取 [优点不用每次请求后端api 缺点后台更新设置后需等待时效性]
 */
const data = isCache => {
  if (isCache == undefined) {
    isCache = Config.get('enabledSettingCache')
  }
  return new Promise((resolve, reject) => {
    const cacheData = getStorage()
    if (isCache && cacheData) {
      resolve(cacheData)
    } else {
      getApiData()
        .then(data => {
          setStorage(data)
          resolve(data)
        })
    }
  })
}

// 获取商城设置(指定项)
const item = (key, isCache) => {
  return new Promise((resolve, reject) => {
    data(isCache).then(setting => resolve(setting[key]))
  })
}

// 获取H5端访问地址
const h5Url = (isCache = false) => {
  return new Promise((resolve, reject) => {
    data(isCache)
      .then(setting => {
        try {
          // 检查设置数据是否存在
          if (!setting || typeof setting !== 'object') {
            throw new Error('设置数据无效')
          }

          // 检查 _other 字段是否存在
          if (!setting[OTHER] || typeof setting[OTHER] !== 'object') {
            throw new Error('_other 设置字段不存在')
          }

          // 检查 h5Url 字段是否存在
          const h5UrlValue = setting[OTHER]['h5Url']
          if (!h5UrlValue || typeof h5UrlValue !== 'string' || h5UrlValue.trim() === '') {
            throw new Error('H5地址未配置或无效')
          }

          resolve(h5UrlValue.trim())
        } catch (error) {
          console.error('获取H5地址失败:', error)
          reject(error)
        }
      })
      .catch(err => {
        console.error('获取设置数据失败:', err)
        reject(err)
      })
  })
}

// 设置全局自定义主题
const setAppTheme = () => {
  return new Promise((resolve, reject) => {
    item(SettingKeyEnum.APP_THEME.value, false)
      .then(appTheme => {
        store.dispatch('SetAppTheme', appTheme)
        resolve()
      })
  })
}

// 是否显示客服按钮 (微信小程序客服只有在微信小程序端显示)
const isShowCustomerBtn = async () => {
  const setting = await item(SettingKeyEnum.CUSTOMER.value, true)
  if (!setting.enabled) {
    return false
  }
  return setting.provider === 'wxqykf' || (setting.provider === 'mpwxkf' && platform === 'MP-WEIXIN')
}

export default {
  data,
  item,
  h5Url,
  setAppTheme,
  isShowCustomerBtn
}