public static async Task <List <ParkArea> > ImportFromJsonAsync(ParkContext db, string json)
{
List <ParkArea> parkAreas = JsonConvert.DeserializeObject <List <ParkArea> >(json);
var existedParks = db.ParkAreas.Where(p => parkAreas.Select(q => q.Name).Contains(p.Name));
(await existedParks.ToListAsync()).ForEach(p => db.ParkAreas.Remove(p));
foreach (var parkArea in parkAreas)
{
foreach (var ps in parkArea.ParkingSpaces)
{
ps.ParkArea = parkArea;
ps.Class ??= "";
ps.ID = 0;
}
foreach (var a in parkArea.Aisles)
{
a.ParkArea = parkArea;
a.Class ??= "";
a.ID = 0;
}
foreach (var w in parkArea.Walls)
{
w.ParkArea = parkArea;
w.Class ??= "";
w.ID = 0;
}
db.Add(parkArea);
}
await db.SaveChangesAsync();
return(parkAreas);
}
/// <summary>
/// 注册
/// </summary>
/// <param name="db"></param>
/// <param name="username"></param>
/// <param name="password"></param>
/// <param name="registTime">内部测试使用的时间</param>
/// <returns>如果用户名已存在，返回null，否则返回注册后的用户对象</returns>
public async static Task <LoginOrRegisterResult> RegisterAsync(ParkContext db, string username, string password, DateTime registTime)
{
if (await db.CarOwners.AnyAsync(p => p.Username == username))
{
return(new LoginOrRegisterResult()
{
Type = LoginOrRegisterResultType.Existed
});
}
CarOwner carOwner = new CarOwner()
{
RegistTime = registTime,
LastLoginTime = registTime,
Username = username,
Password = CreateMD5(username + password),
Enabled = true,
};
db.Add(carOwner);
await db.SaveChangesAsync();
return(new LoginOrRegisterResult()
{
CarOwner = carOwner
});
}
public virtual T Insert(T t)
{
try
{
_context.Add(t);
_context.SaveChanges();
return(t);
}
catch (Exception)
{
throw;
}
}