using Apimanager_backend.Data;
using Apimanager_backend.Dtos;
using Apimanager_backend.Exceptions;
using Apimanager_backend.Models;
using AutoMapper;
using Microsoft.EntityFrameworkCore;

namespace Apimanager_backend.Services
{
    public class AuthService:IAuthService
    {
        private readonly ApiContext apiContext;
        private readonly IMapper mapper;
        public AuthService(ApiContext apiContext, IMapper automapper)
        {
            this.apiContext = apiContext;
            this.mapper = automapper;
        }
        public async Task<UserInfoDto> LoginAsync(string username, string password)
        {
            //查找用户
            User? user = await apiContext.Users.Include(x => x.Roles).SingleOrDefaultAsync(x =>
                x.Username == username && x.PassHash == password
            );

            //用户不存在或密码错误都为登录失败
            if (user == null)
            {
                throw new BaseException(2001, "Invalid username or password");
            }

            //用户被禁用
            if (user.IsBan)
            {
                throw new BaseException(2002, "User account is disabled");
            }

            return mapper.Map<UserInfoDto>(user);
        }
    }
}