package services

import (
	"errors"
	"eta/eta_mini_api/models"
	"eta/eta_mini_api/services/go_redis"
	"eta/eta_mini_api/utils"
	"time"
)

// BindUser 用户绑定
func BindUser(unionId, openId, phone, email, areaCode string, departmentId int, realName string) (userItem *models.User, errMsg string, err error) {
	if phone == "" && email == "" {
		err = errors.New("手机号或邮箱必填一个")
		return
	}
	// 根据openid获取用户信息
	if openId == "" {
		err = errors.New("openid不能为空")
		return
	}
	userItem, err = models.GetUserByOpenId(openId)
	if err != nil && err.Error() != utils.ErrNoRow() {
		return
	}
	var userId int
	curTime := time.Now()
	if userItem != nil {
		userId = userItem.UserId
		if userItem.Phone != "" && userItem.Phone != phone && phone != "" {
			errMsg = "该手机号已绑定其他微信号"
			return
		}
		if userItem.Email != "" && userItem.Email != email && email != "" {
			errMsg = "该邮箱已绑定其他微信号"
			return
		}
		if userItem.Phone == "" && phone != "" {
			user := &models.User{
				UserId:       userItem.UserId,
				Phone:        phone,
				AreaCode:     areaCode,
				RegisterTime: curTime,
				ModifyTime:   curTime,
			}
			updateUserErr := user.Update([]string{"phone", "area_code", "register_time", "modify_time"})
			if updateUserErr != nil {
				err = updateUserErr
				return
			}
		}
		if userItem.Email == "" && email != "" {
			user := &models.User{
				UserId:       userItem.UserId,
				Email:        email,
				RegisterTime: curTime,
				ModifyTime:   curTime,
			}
			updateUserErr := user.Update([]string{"email", "modify_time", "register_time"})
			if updateUserErr != nil {
				err = updateUserErr
				return
			}
		}
	} else {
		//根据手机号获取用户信息
		var phoneUser, emailUser *models.User
		if phone != "" {
			tmpUser, userErr := models.GetUserByPhone(phone)
			if userErr != nil && userErr.Error() != utils.ErrNoRow() {
				err = userErr
				return
			}
			phoneUser = tmpUser
		}
		//根据邮箱获取用户信息
		if email != "" {
			tmpUser, userErr := models.GetUserByEmail(email)
			if userErr != nil && userErr.Error() != utils.ErrNoRow() {
				err = userErr
				return
			}
			emailUser = tmpUser
		}
		// 理论上来说不会同时出现手机号和邮箱同时存在的情况
		if phoneUser != nil && emailUser != nil && phoneUser.UserId != emailUser.UserId {
			errMsg = "该手机号和邮箱已绑定其他微信号"
			err = errors.New("该手机号和邮箱已绑定其他微信号")
			return
		}
		if phoneUser != nil {
			userItem = phoneUser
		}
		if emailUser != nil {
			userItem = emailUser
		}
		//如果查询出来的用户是nil，那么需要新增用户
		if userItem == nil {
			key := utils.CACHE_ACCESS_WX_BIND + phone + ":" + email
			isHas := go_redis.IsExist(key)
			if isHas {
				err = errors.New("多次提交，请关闭页面重新进入")
				return
			}
			go_redis.SetNX(key, "ok", time.Second*300)
			user := &models.User{
				Phone:    phone,
				AreaCode: areaCode,
				Email:    email,
				Status:   utils.UserStatusPotential,
				OpenId:   openId,
				UnionId:  unionId,
			}
			tmpUserId, addUserErr := user.Insert()
			//添加完成，清除缓存
			_ = go_redis.Delete(key)
			if addUserErr != nil {
				err = addUserErr
				return
			}
			user.UserId = int(tmpUserId)
			userId = int(tmpUserId)
			userItem, err = models.GetUserById(userId)
			if err != nil {
				errMsg = "获取用户信息失败"
				return
			}
		} else {
			userItem.OpenId = openId
			userItem.UnionId = unionId
			err = userItem.Update([]string{"open_id", "union_id"})
			if err != nil {
				errMsg = "用户绑定失败"
				return
			}
			userId = userItem.UserId
		}
	}

	//如果该用户 绑定注册状态 字段处于 未注册 的情况下，那么去修改该数据
	if !userItem.IsRegistered {
		err = models.ModifyUserRegisterStatus(userId, true, curTime, curTime)
		if err != nil {
			return
		}
	}
	userRecord, er := models.GetUserRecordByUnionId(userItem.UnionId)
	if er != nil && er.Error() != utils.ErrNoRow() {
		err = errors.New("获取用户关注记录失败")
		return
	}
	if !userItem.IsSubscribed && userRecord != nil {
		userRecord.UserId = userId
		er = userRecord.Update([]string{"user_id"})
		if er != nil {
			err = errors.New("获取用户关注记录失败")
			return
		}
		userItem.IsSubscribed = true
		er = userItem.Update([]string{"is_subscribed"})
		if er != nil {
			err = errors.New("获取用户关注记录失败")
			return
		}
	}

	msg, err := SaveUserInfo(userId, departmentId, realName)
	if msg != "" {
		errMsg = msg
	}
	return
}

// SaveUserInfo 保存用户信息
func SaveUserInfo(userId, departmentId int, realName string) (msg string, err error) {
	user, err := models.GetUserById(userId)
	if err != nil {
		return
	}
	if user.RealName == "" && realName == "" {
		msg = "请输入姓名"
		return
	}
	updateCols := make([]string, 0)
	if realName != "" && user.RealName != realName {
		user.RealName = realName
		updateCols = append(updateCols, "real_name")
	}
	if departmentId > 0 && user.SellerDepartmentId != departmentId {
		department, er := models.GetSysDepartmentById(departmentId)
		if er != nil {
			err = er
			if err.Error() == utils.ErrNoRow() {
				msg = "部门不存在，请刷新重试"
				return
			}
			msg = "获取部门信息失败"
			return
		}
		parentDepartment, er := models.GetSysDepartmentById(department.ParentId)
		if er != nil {
			err = er
			if err.Error() == utils.ErrNoRow() {
				msg = "父级部门不存在，请刷新重试"
				return
			}
			msg = "获取部门信息失败"
			return
		}
		if parentDepartment.SysDepartmentName != "营业部" {
			msg = "部门信息异常"
			return
		}
		user.SellerDepartmentId = departmentId
		user.SellerDepartmentName = department.SysDepartmentName
		updateCols = append(updateCols, "seller_department_id")
		updateCols = append(updateCols, "seller_department_name")
	}
	if (user.SellerDepartmentName == "" || user.SellerDepartmentId == 0) && departmentId <= 0 {
		msg = "请选择营业部门"
		return
	}
	err = user.Update(updateCols)
	if err != nil {
		msg = "用户信息保存失败"
		return
	}
	return
}