package user

import (
	"context"

	"backend/usercenter/api/internal/svc"
	"backend/usercenter/api/internal/types"
	"backend/usercenter/orm"
	"backend/utils"

	"github.com/zeromicro/go-zero/core/logx"
	"gorm.io/gorm"
	// github.com/spf13/cast // 类型转换
	// github.com/golang-module/carbon/v2 // 日期时间处理
	// github.com/jinzhu/copier/v2 // 结构体复制
	// orm 目录下的 orm 包
)

type UserLoginLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

// 用户登录
func NewUserLoginLogic(ctx context.Context, svcCtx *svc.ServiceContext) *UserLoginLogic {
	return &UserLoginLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *UserLoginLogic) UserLogin(req *types.LoginRequest) (resp *types.UsersResponse, err error) {
	// 查找用户名或者手机号
	user := new(orm.User)
	result := l.svcCtx.Db.Where("name = ? or phone = ?", req.Identity, req.Identity).First(user)
	if result.Error != nil && result.Error != gorm.ErrRecordNotFound {
		return &types.UsersResponse{
			Success: false,
			Message: result.Error.Error(),
			Data:    nil,
			Code:    200,
		}, nil
	}
	if result.Error == gorm.ErrRecordNotFound {
		return &types.UsersResponse{
			Success: false,
			Message: "用户名或者手机号不存在",
			Data:    nil,
			Code:    200,
		}, nil
	}

	// 检查密码
	password := req.Password
	if password == "" {
		return &types.UsersResponse{
			Success: false,
			Message: "密码不能为空",
			Data:    nil,
			Code:    200,
		}, nil
	}

	// 检查密码是否正确
	if !utils.CheckPassword(user.Password, req.Password) {
		return &types.UsersResponse{
			Success: false,
			Message: "密码错误",
			Data:    nil,
			Code:    200,
		}, nil
	}

	// 生成token
	jwtUtil := utils.NewJWTUtil(l.svcCtx.Config.Auth.AccessSecret, l.svcCtx.Config.Auth.AccessExpire, l.svcCtx.RedisClient, l.svcCtx.Config.TkStore)
	token, err := jwtUtil.GenerateToken(l.ctx, int64(user.ID), user.Name)
	if err != nil {
		return &types.UsersResponse{
			Success: false,
			Message: err.Error(),
			Data:    nil,
			Code:    200,
		}, nil
	}
	return &types.UsersResponse{
		Success: true,
		Message: "登录成功",
		Data:    token,
		Code:    200,
	}, nil
}