package auth

import (
	"context"
	"errors"
	"time"

	"photography-backend/internal/model"
	"photography-backend/internal/svc"
	"photography-backend/internal/types"
	"photography-backend/pkg/utils/hash"

	"github.com/zeromicro/go-zero/core/logx"
)

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

// 用户注册
func NewRegisterLogic(ctx context.Context, svcCtx *svc.ServiceContext) *RegisterLogic {
	return &RegisterLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *RegisterLogic) Register(req *types.RegisterRequest) (resp *types.RegisterResponse, err error) {
	// 1. 检查用户名是否已存在
	existingUser, err := l.svcCtx.UserModel.FindOneByUsername(l.ctx, req.Username)
	if err == nil && existingUser != nil {
		return nil, errors.New("用户名已存在")
	}
	
	// 2. 检查邮箱是否已存在
	existingEmail, err := l.svcCtx.UserModel.FindOneByEmail(l.ctx, req.Email)
	if err == nil && existingEmail != nil {
		return nil, errors.New("邮箱已存在")
	}
	
	// 3. 加密密码
	hashedPassword, err := hash.HashPassword(req.Password)
	if err != nil {
		return nil, err
	}
	
	// 4. 创建用户
	user := &model.User{
		Username: req.Username,
		Email:    req.Email,
		Password: hashedPassword,
		Status:   1, // 默认激活状态
		CreatedAt: time.Now(),
		UpdatedAt: time.Now(),
	}
	
	_, err = l.svcCtx.UserModel.Insert(l.ctx, user)
	if err != nil {
		return nil, err
	}
	
	// 5. 返回注册结果
	return &types.RegisterResponse{
		BaseResponse: types.BaseResponse{
			Code:    200,
			Message: "注册成功",
		},
		Data: types.User{
			Id:        user.Id,
			Username:  user.Username,
			Email:     user.Email,
			Avatar:    user.Avatar,
			Status:    int(user.Status),
			CreatedAt: user.CreatedAt.Unix(),
			UpdatedAt: user.UpdatedAt.Unix(),
		},
	}, nil
}