// Commands
public virtual async Task <ChatMessage> Post(
Chat.PostCommand command, CancellationToken cancellationToken = default)
{
var(session, chatId, text) = command;
var context = CommandContext.GetCurrent();
if (Computed.IsInvalidating())
{
var invChatMessage = context.Operation().Items.Get <ChatMessage>();
PseudoGetTail(chatId, default).Ignore();
return(null !);
}
var user = await AuthService.GetUser(session, cancellationToken);
user = user.MustBeAuthenticated();
var userId = long.Parse(user.Id);
var cp = await GetPermissions(session, chatId, cancellationToken);
if ((cp & ChatPermission.Write) != ChatPermission.Write)
{
throw new SecurityException("You can't post to this chat.");
}
var parsedMessage = await MessageParser.Parse(text, cancellationToken);
await using var dbContext = await CreateCommandDbContext(cancellationToken);
var now = Clock.Now;
var chatMessage = new ChatMessage(Ulid.NewUlid().ToString(), chatId)
{
UserId = userId,
CreatedAt = now,
EditedAt = now,
Text = parsedMessage.Format(),
};
var dbChatMessage = new DbChatMessage();
dbChatMessage.UpdateFrom(chatMessage);
dbContext.Add(dbChatMessage);
await dbContext.SaveChangesAsync(cancellationToken);
context.Operation().Items.Set(chatMessage);
return(chatMessage);
}
public Task <ChatMessage> Post([FromBody] Chat.PostCommand command, CancellationToken cancellationToken = default)
{
command.UseDefaultSession(SessionResolver);
return(Chats.Post(command, cancellationToken));
}