package logic

import (
	"context"

	"slowwild/internal/svc"

	"slowwild/internal/errorx"
	"slowwild/internal/model"
	"slowwild/internal/utils"

	"git.banshen.xyz/huangguangrong/slow_wild_protobuff/slowwild/slowwildserver"
	"github.com/zeromicro/go-zero/core/logx"
)

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

func NewLoginLogic(ctx context.Context, svcCtx *svc.ServiceContext) *LoginLogic {
	return &LoginLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
		Logger: logx.WithContext(ctx),
	}
}

// 用户登录
func (l *LoginLogic) Login(in *slowwildserver.LoginReq) (*slowwildserver.LoginAndRegisterRsp, error) {
	if in.Phone == "" {
		return nil, errorx.ErrInvalidParam
	}

	var user *model.User
	var err error

	// 查询用户是否存在
	user, err = l.svcCtx.UserModel.FindOneByPhone(l.ctx, in.Phone)
	if err == model.ErrNotFound {
		return nil, errorx.ErrUserNotFound
	}
	if err != nil {
		return nil, errorx.ErrUserQueryFailed
	}

	// 根据登录方式验证
	if in.LoginType == 1 { // 验证码登录
		if in.Code == "" {
			return nil, errorx.ErrInvalidParam
		}
		// TODO: 验证验证码
		// if !verifyCode(in.Phone, in.Code) {
		// 	return nil, errorx.NewCodeError(10004, "验证码错误")
		// }
	} else if in.LoginType == 2 { // 密码登录
		if in.Password == "" {
			return nil, errorx.ErrInvalidParam
		}
		// 验证密码
		if !verifyPassword(user.Password, user.Salt, in.Password) {
			return nil, errorx.NewCodeError(10005, "密码错误")
		}
	} else {
		return nil, errorx.ErrInvalidParam
	}

	// 生成token
	token, err := utils.GenerateToken(user.ID)
	if err != nil {
		return nil, errorx.NewCodeError(10006, "生成token失败")
	}

	// 更新最后登录IP
	err = l.svcCtx.UserModel.UpdateLoginIP(l.ctx, user.ID, in.LoginIp)
	if err != nil {
		l.Logger.Errorf("更新登录IP失败: %v", err)
	}

	return &slowwildserver.LoginAndRegisterRsp{
		Token: token,
	}, nil
}

// 验证密码
func verifyPassword(dbPassword, salt, inputPassword string) bool {
	return dbPassword == utils.EncryptPassword(inputPassword, salt)
}