package main

import (
	"errors"
	"sparrow/pkg/models"
	"sparrow/pkg/rpcs"
)

// ErrUserNameExists 用户名已经存在
var ErrUserNameExists = errors.New("用户名已经存在")

// ErrPhoneExists 手机号已经存在
var ErrPhoneExists = errors.New("手机号已经被注册过")

// ErrEmailExists Email地址已经被注册
var ErrEmailExists = errors.New("Email地址已经被使用")

// ErrNameOrPassError 登录失败
var ErrNameOrPassError = errors.New("用户名或密码不正确")

// Login 用户登录
func (r *Registry) Login(args *models.LoginRequest, reply *models.User) error {
	db, err := getDB()
	if err != nil {
		return err
	}

	err = db.Where("(user_name = ? or phone = ? or email = ?) AND user_pass = ?",
		args.UserName, args.UserName, args.UserName, mdd(args.Password)).First(&reply).Error
	if err != nil {
		return err
	}
	if reply.ID == 0 {
		return ErrNameOrPassError
	}
	return nil
}

// Register 用户注册
func (r *Registry) Register(args *models.User, reply *models.User) error {
	db, err := getDB()
	if err != nil {
		return err
	}
	err = checkUserExists(args.UserName, args.Phone, args.Email)
	if err != nil {
		return err
	}
	args.UserKey, err = r.keygen.GenRandomKey(args.ID)
	if err != nil {
		return err
	}
	args.UserPass = mdd(args.UserPass)
	err = db.Save(args).Error
	if err != nil {
		return err
	}
	reply = args
	return nil
}

//ModifyPass 修改密码
func (r *Registry) ModifyPass(args *rpcs.ArgsUserModifyPass, reply *models.User) error {
	db, err := getDB()
	if err != nil {
		return err
	}
	pass := mdd(args.NewPass)
	oldpass := mdd(args.OldPass)
	var count int
	err = db.Model(&reply).Where(map[string]interface{}{
		"id":        args.UserID,
		"user_pass": oldpass,
	}).Update("user_pass", pass).Count(&count).Error
	if err != nil {
		return ErrNameOrPassError
	}
	if count == 0 {
		return ErrNameOrPassError
	}
	return nil
}

//SendVerifyCode 发送手机验证码

//check username, phone or email exists
func checkUserExists(name, phone, email string) error {
	db, err := getDB()
	if err != nil {
		return err
	}
	reply := &models.User{}
	db.First(reply, map[string]interface{}{"user_name": name})
	if reply.ID != 0 {
		return ErrUserNameExists
	}
	db.First(reply, map[string]interface{}{"phone": phone})
	if reply.ID != 0 {
		return ErrPhoneExists
	}
	db.First(reply, map[string]interface{}{"email": email})
	if reply.ID != 0 {
		return ErrEmailExists
	}
	return nil
}