package services

import (
	"eta/eta_mini_api/models"
	"eta/eta_mini_api/services/wechat"
	"eta/eta_mini_api/utils"
	"fmt"
	"time"
)

// WechatSubscribe 关注公众号
func WechatSubscribe(openId string) {
	var err error
	defer func() {
		if err != nil {
			tips := fmt.Sprintf("WechatSubscribe, OpenId: %s, ErrMsg: %v", openId, err)
			utils.FileLog.Info(tips)
			fmt.Println(tips)
		}
	}()
	if openId == "" {
		err = fmt.Errorf("OpenId为空")
		return
	}

	// 获取订阅信息
	userRecord := new(models.UserRecord)
	{
		cond := fmt.Sprintf(` AND %s = ?`, userRecord.Cols().OpenId)
		pars := make([]interface{}, 0)
		pars = append(pars, openId)
		record, e := userRecord.GetItemByCondition(cond, pars, "")
		if e != nil && e.Error() != utils.ErrNoRow() {
			err = fmt.Errorf("获取订阅记录失败, %v", e)
			return
		}
		if record != nil && record.UserRecordId > 0 {
			userRecord = record
		}
	}

	// 获取unionId
	var unionId string
	wechatUser, e := wechat.GetUserInfo(openId)
	if e != nil {
		err = fmt.Errorf("获取公众号用户信息失败, %v", e)
		return
	}
	if wechatUser.UnionID == "" {
		err = fmt.Errorf("UnionId有误")
		return
	}
	unionId = wechatUser.UnionID

	// 订阅信息不存在那么新增
	if userRecord.UserRecordId == 0 {
		userRecord.OpenId = openId
		userRecord.UnionId = unionId
		userRecord.Subscribe = models.UserSubscribed
		userRecord.SubscribeTime = time.Now().Local()
		userRecord.NickName = wechatUser.Nickname
		userRecord.Gender = int(wechatUser.Sex)
		userRecord.Avatar = wechatUser.Headimgurl
		//userRecord.Province = wechatUser.Province
		//userRecord.City = wechatUser.City
		//userRecord.Country = wechatUser.Country
		userRecord.CreateTime = time.Now().Local()
		userRecord.ModifyTime = time.Now().Local()
		if e := userRecord.Create(); e != nil {
			err = fmt.Errorf("新增订阅记录失败, %v", e)
			return
		}
	}

	// 查询是否有小程序用户
	users := new(models.Users)
	if userRecord.UserId > 0 {
		u, e := users.GetItemById(userRecord.UserId)
		if e != nil && e.Error() != utils.ErrNoRow() {
			err = fmt.Errorf("获取用户信息失败, %v", e)
			return
		}
		if u != nil && u.UserId > 0 {
			users = u
		}
	} else {
		cond := fmt.Sprintf(` AND %s = ?`, users.Cols().UnionId)
		pars := make([]interface{}, 0)
		pars = append(pars, unionId)
		u, e := users.GetItemByCondition(cond, pars, "")
		if e != nil && e.Error() != utils.ErrNoRow() {
			err = fmt.Errorf("UnionId获取用户信息失败, %s, %v", unionId, e)
			return
		}
		if u != nil && u.UserId > 0 {
			users = u
		}
	}

	// 更新订阅记录
	var hasUsers bool
	updateCols := []string{userRecord.Cols().UnionId, userRecord.Cols().Subscribe, userRecord.Cols().SubscribeTime, userRecord.Cols().ModifyTime}
	if users.UserId > 0 {
		userRecord.UserId = users.UserId
		updateCols = append(updateCols, userRecord.Cols().UserId)
		hasUsers = true
	}
	userRecord.UnionId = unionId
	userRecord.Subscribe = models.UserSubscribed
	userRecord.SubscribeTime = time.Now().Local()
	userRecord.ModifyTime = time.Now().Local()
	if e := userRecord.Update(updateCols); e != nil {
		err = fmt.Errorf("更新订阅记录失败, %v", e)
		return
	}

	// 更新用户信息
	if !hasUsers {
		return
	}
	users.UnionId = unionId
	users.Subscribe = userRecord.Subscribe
	users.ModifyTime = time.Now().Local()
	updateCols = []string{users.Cols().Subscribe, users.Cols().ModifyTime}
	if e := users.Update(updateCols); e != nil {
		err = fmt.Errorf("UnionId绑定用户失败, %v", e)
		return
	}
}

// WechatUnsubscribe 取消关注公众号
func WechatUnsubscribe(openId string) {
	var err error
	defer func() {
		if err != nil {
			tips := fmt.Sprintf("WechatUnsubscribe, OpenId: %s, ErrMsg: %v", openId, err)
			utils.FileLog.Info(tips)
			fmt.Println(tips)
		}
	}()
	if openId == "" {
		err = fmt.Errorf("OpenId为空")
		return
	}

	userRecord := new(models.UserRecord)
	{
		cond := fmt.Sprintf(` AND %s = ?`, userRecord.Cols().OpenId)
		pars := make([]interface{}, 0)
		pars = append(pars, openId)
		record, e := userRecord.GetItemByCondition(cond, pars, "")
		if e != nil {
			if e.Error() == utils.ErrNoRow() {
				err = fmt.Errorf("订阅信息不存在")
				return
			}
			err = fmt.Errorf("获取订阅记录失败, %v", e)
			return
		}
		userRecord = record
	}
	userRecord.Subscribe = models.UserNoSubscribe
	userRecord.SubscribeTime = time.Now().Local()
	userRecord.ModifyTime = time.Now().Local()
	updateCols := []string{userRecord.Cols().Subscribe, userRecord.Cols().SubscribeTime, userRecord.Cols().ModifyTime}
	if e := userRecord.Update(updateCols); e != nil {
		err = fmt.Errorf("更新订阅记录失败, %v", e)
		return
	}

	// 更新用户表
	users := new(models.Users)
	if userRecord.UserId > 0 {
		u, e := users.GetItemById(userRecord.UserId)
		if e != nil && e.Error() != utils.ErrNoRow() {
			err = fmt.Errorf("获取用户信息失败, %v", e)
			return
		}
		if u != nil && u.UserId > 0 {
			users = u
		}
	}
	if users.UserId == 0 && userRecord.UnionId != "" {
		cond := fmt.Sprintf(` AND %s = ?`, users.Cols().UnionId)
		pars := make([]interface{}, 0)
		pars = append(pars, userRecord.UnionId)
		u, e := users.GetItemByCondition(cond, pars, "")
		if e != nil && e.Error() != utils.ErrNoRow() {
			err = fmt.Errorf("获取用户信息失败, %v", e)
			return
		}
		if u != nil && u.UserId > 0 {
			users = u
		}
	}
	if users.UserId == 0 {
		err = fmt.Errorf("用户信息不存在")
		return
	}
	users.Subscribe = userRecord.Subscribe
	users.ModifyTime = time.Now().Local()
	updateCols = []string{users.Cols().Subscribe, users.Cols().ModifyTime}
	if e := users.Update(updateCols); e != nil {
		err = fmt.Errorf("更新用户关注状态失败, %v", e)
	}
	return
}