package user

import (
	"context"

	"photography-backend/internal/svc"
	"photography-backend/internal/types"
	"photography-backend/pkg/errorx"

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

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

// 删除用户
func NewDeleteUserLogic(ctx context.Context, svcCtx *svc.ServiceContext) *DeleteUserLogic {
	return &DeleteUserLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *DeleteUserLogic) DeleteUser(req *types.DeleteUserRequest) (resp *types.DeleteUserResponse, err error) {
	// 检查用户是否存在
	user, err := l.svcCtx.UserModel.FindOne(l.ctx, req.Id)
	if err != nil {
		if err == sqlx.ErrNotFound {
			return &types.DeleteUserResponse{
				BaseResponse: types.BaseResponse{
					Code:    errorx.UserNotFound,
					Message: "用户不存在",
				},
			}, nil
		}
		logx.WithContext(l.ctx).Error("查询用户失败: ", err)
		return &types.DeleteUserResponse{
			BaseResponse: types.BaseResponse{
				Code:    errorx.ServerError,
				Message: "查询用户失败",
			},
		}, nil
	}

	// 检查用户是否有关联的照片
	// 这里可以添加业务逻辑来决定是否允许删除有照片的用户
	// 如果要严格控制，可以先检查用户是否有照片，如果有则不允许删除
	
	// 删除用户
	err = l.svcCtx.UserModel.Delete(l.ctx, req.Id)
	if err != nil {
		logx.WithContext(l.ctx).Error("删除用户失败: ", err)
		return &types.DeleteUserResponse{
			BaseResponse: types.BaseResponse{
				Code:    errorx.ServerError,
				Message: "删除用户失败",
			},
		}, nil
	}

	logx.WithContext(l.ctx).Infof("用户 %s (ID: %d) 已被删除", user.Username, user.Id)

	return &types.DeleteUserResponse{
		BaseResponse: types.BaseResponse{
			Code:    errorx.Success,
			Message: "删除用户成功",
		},
	}, nil
}