public async Task <IActionResult> RemoveFriend([FromRoute] int userToFriendId)
{
if (ModelState.IsValid)
{
var user = await _userManager.GetUserAsync(User);
if (user == null)
{
return(new JsonResult(new Response {
Ok = false, StatusCode = 404, Description = "Запрашивающий пользователь не найден"
}));
}
var userToFriend = await _context.UserToFriends.FirstOrDefaultAsync(x => x.Id == userToFriendId);
if (userToFriend == null)
{
return(new JsonResult(new Response {
Ok = false, StatusCode = 404, Description = "Не найдено такой дружбы"
}));
}
if (userToFriend.UserId != user.Id)
{
return(new JsonResult(new Response {
Ok = false, StatusCode = 403, Description = "У пользователя нет такой дружбы"
}));
}
if (userToFriend.FriendId == null)
{
// Если друга уже нет (friendId == null), то и зеркальной записи нет
// А значит ее не нужно удалять, подписчика и запрос не нужно добавлять
_context.UserToFriends.Remove(userToFriend);
await _context.SaveChangesAsync();
return(new JsonResult(new Response {
Ok = true, StatusCode = 200, Result = new { Message = "Deleted user removed" }
}));
}
else // Если friendId не null, т.е. существует
{
int followerId = userToFriend.FriendId.Value; // Id друга, который станет подписчиком
var mirrorUserToFriend = await _context.UserToFriends.FirstAsync(u => u.UserId == userToFriend.FriendId && u.FriendId == userToFriend.UserId);
_context.UserToFriends.RemoveRange(userToFriend, mirrorUserToFriend); // Удаляем записи о дружбе
// Добавляем подписчика и запрос
var newUserToFolower = new UserToFollower {
UserId = user.Id, FollowerId = followerId
}; // Подписчик
_context.UserToFollowers.Add(newUserToFolower);
var newUserToRequest = new UserToRequest {
UserId = followerId, RequestId = user.Id
}; // Запрос
_context.UserToRequests.Add(newUserToRequest);
await _context.SaveChangesAsync();
return(new JsonResult(new Response {
Ok = true, StatusCode = 200, Result = new { Message = "Existing user removed", FollowerId = followerId }
}));
}
}
return(new JsonResult(new Response {
Ok = false, StatusCode = 400, Description = "Заполнены не все (либо неверно) поля запроса"
}));
}
private async Task <IActionResult> TrySendFriendRequestAsync(int userId, int friendId)
{
var userToFriend = await _context.UserToFriends.FirstOrDefaultAsync(x => x.UserId == userId && x.FriendId == friendId);
if (userToFriend != null) // Уже друзья
{
return(new JsonResult(new Response {
Ok = false, StatusCode = 403, Description = "Пользователи уже в друзьях друг у друга"
}));
}
var userToRequest = await _context.UserToRequests.FirstOrDefaultAsync(x => x.UserId == userId && x.RequestId == friendId);
if (userToRequest != null) // Уже имеет запрос пользователю с Id = friendId. Аналогично уже имеется зеркальная запись в подписчиках юзера с Id = friendId
{
return(new JsonResult(new Response {
Ok = false, StatusCode = 403, Description = "Пользователь уже отправил заявку"
}));
}
var mirrorUserToRequest = await _context.UserToRequests.FirstOrDefaultAsync(x => x.UserId == friendId && x.RequestId == userId);
if (mirrorUserToRequest != null) // Тот пользователь уже подписан, т.е. взаимная дружба => добавляем в друзья
{
var newUserToFriend = new UserToFriend {
UserId = userId, FriendId = friendId
};
var newMirrorUserToFriend = new UserToFriend {
UserId = friendId, FriendId = userId
};
await _context.UserToFriends.AddRangeAsync(newUserToFriend, newMirrorUserToFriend);
// И удаляю запрос
_context.UserToRequests.Remove(mirrorUserToRequest);
// И удаляю подписчика
var userToFollower = await _context.UserToFollowers.FirstAsync(x => x.UserId == userId && x.FollowerId == friendId);
_context.UserToFollowers.Remove(userToFollower);
await _context.SaveChangesAsync();
return(new JsonResult(new Response {
Ok = true, StatusCode = 200, Result = new { Message = "Added", Id = newUserToFriend.Id }
}));
}
else // Тот пользователь не подписан, т.е. отправляется запрос на дружбу => добавляем запрос и подписчика
{
var newUserToRequest = new UserToRequest {
UserId = userId, RequestId = friendId
}; // У userId добавляем запрос (кому?) friendId
_context.UserToRequests.Add(newUserToRequest);
var newUserToFollower = new UserToFollower {
UserId = friendId, FollowerId = userId
}; // У friendId добавляем подписчика (кого?) userId
_context.UserToFollowers.Add(newUserToFollower);
await _context.SaveChangesAsync();
return(new JsonResult(new Response {
Ok = true, StatusCode = 200, Result = new { Message = "Requested", Id = newUserToRequest.Id }
}));
}
}
public async Task InvokeAsync(HttpContext context)
{
_db = context.RequestServices.GetService(typeof(ApplicationContext)) as ApplicationContext;
_userManager = context.RequestServices.GetService(typeof(UserManager <User>)) as UserManager <User>;
if (_db.Users.Count() != 0)
{
await _next.Invoke(context);
return;
}
var user1 = new User {
UserName = "******", NormalizedUserName = "******"
};
var user2 = new User {
UserName = "******", NormalizedUserName = "******"
};
var user3 = new User {
UserName = "******", NormalizedUserName = "******"
};
await _userManager.CreateAsync(user1, "123456");
await _userManager.CreateAsync(user2, "123456");
await _userManager.CreateAsync(user3, "123456");
var dialog1 = new Dialog {
Title = "Первый диалог", CreatingTime = DateTime.Now, LastMessageTime = DateTime.Now
};
var dialog2 = new Dialog {
Title = "Второй диалог", CreatingTime = DateTime.Now, LastMessageTime = DateTime.Now
};
var dialog3 = new Dialog {
Title = "Третий диалог", CreatingTime = DateTime.Now, LastMessageTime = DateTime.Now
};
await _db.Dialogs.AddRangeAsync(dialog1, dialog2, dialog3);
await _db.SaveChangesAsync();
dialog1.Users = new List <UserToDialog>
{
new UserToDialog {
Dialog = dialog1, User = user1
},
new UserToDialog {
Dialog = dialog1, User = user2
},
new UserToDialog {
Dialog = dialog1, User = user3
},
};
dialog2.Users = new List <UserToDialog>
{
new UserToDialog {
Dialog = dialog2, User = user1
},
new UserToDialog {
Dialog = dialog2, User = user3
},
};
dialog3.Users = new List <UserToDialog>
{
new UserToDialog {
Dialog = dialog3, User = user2
},
};
_db.Dialogs.UpdateRange(dialog1, dialog2, dialog3);
await _db.SaveChangesAsync();
var message1 = new Message {
Text = "Привет", Author = user1, Dialog = dialog1, SendingTime = DateTime.Now
};
var message2 = new Message {
Text = "Это я!", Author = user1, Dialog = dialog2, SendingTime = DateTime.Now
};
var message3 = new Message {
Text = "Здравствуй!", Author = user2, Dialog = dialog3, SendingTime = DateTime.Now
};
var message4 = new Message {
Text = "Как дела?", Author = user1, Dialog = dialog3, SendingTime = DateTime.Now
};
var message5 = new Message {
Text = "Дурка уже в пути", Author = user2, Dialog = dialog2, SendingTime = DateTime.Now
};
await _db.Messages.AddRangeAsync(message1, message2, message3, message4, message5);
await _db.SaveChangesAsync();
var uf1 = new UserToFriend {
User = user1, FriendId = user2.Id
};
var uf2 = new UserToFriend {
User = user1, FriendId = user3.Id
};
var uf3 = new UserToFriend {
User = user2, FriendId = user1.Id
};
var uf5 = new UserToFriend {
User = user3, FriendId = user1.Id
};
_db.UserToFriends.AddRange(uf1, uf2, uf3, uf5);
await _db.SaveChangesAsync();
var ufw1 = new UserToFollower {
User = user2, FollowerId = user3.Id
};
var ur1 = new UserToRequest {
User = user3, RequestId = user2.Id
};
_db.UserToFollowers.AddRange(ufw1);
_db.UserToRequests.AddRange(ur1);
await _db.SaveChangesAsync();
await _next.Invoke(context);
}