mirror of
https://github.com/RedWizardsLab/EchoHub.git
synced 2026-09-04 08:36:11 +02:00
feat: Implement IRC Gateway Service and related functionality
- Add IrcGatewayService to handle IRC connections and commands. - Create IrcMessage class for parsing IRC protocol lines. - Implement IrcMessageFormatter for formatting messages as IRC lines. - Define IrcNumericReply constants for IRC numeric replies. - Add IrcOptions class for configuration settings related to IRC. - Create IrcServiceExtensions for adding IRC services to the application. - Refactor ChannelsController to use IChatService for broadcasting messages and channel updates. - Update ChatHub to utilize IChatService for user connection and message handling. - Introduce ChatService to manage chat-related operations and interactions. - Implement SignalRBroadcaster for broadcasting messages to SignalR clients. - Update PresenceTracker to retrieve usernames for connections. - Modify appsettings.example.json to include IRC configuration options. - Update solution file to include the new IRC project.
This commit is contained in:
HueByte
@@ -0,0 +1,330 @@
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using EchoHub.Core.Constants;
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using EchoHub.Core.Contracts;
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using EchoHub.Core.DTOs;
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using EchoHub.Core.Models;
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using EchoHub.Server.Data;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.Extensions.DependencyInjection;
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using Microsoft.Extensions.Logging;
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namespace EchoHub.Server.Services;
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public class ChatService(
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IServiceScopeFactory scopeFactory,
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PresenceTracker presenceTracker,
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IEnumerable<IChatBroadcaster> broadcasters,
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ILogger<ChatService> logger) : IChatService
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{
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public async Task UserConnectedAsync(string connectionId, Guid userId, string username)
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{
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presenceTracker.UserConnected(connectionId, userId, username);
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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var user = await db.Users.FindAsync(userId);
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if (user is not null)
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{
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user.LastSeenAt = DateTimeOffset.UtcNow;
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user.Status = UserStatus.Online;
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await db.SaveChangesAsync();
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}
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logger.LogInformation("{User} connected (ConnectionId: {ConnectionId})", username, connectionId);
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}
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public async Task<string?> UserDisconnectedAsync(string connectionId)
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{
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var preDisconnectUsername = presenceTracker.GetUsernameForConnection(connectionId);
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var channelsBeforeDisconnect = preDisconnectUsername is not null
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? presenceTracker.GetChannelsForUser(preDisconnectUsername)
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: [];
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var username = presenceTracker.UserDisconnected(connectionId);
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if (username is not null && !presenceTracker.IsOnline(username))
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{
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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var user = await db.Users.FirstOrDefaultAsync(u => u.Username == username);
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if (user is not null)
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{
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user.LastSeenAt = DateTimeOffset.UtcNow;
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user.Status = UserStatus.Invisible;
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await db.SaveChangesAsync();
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var presence = new UserPresenceDto(
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username,
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user.DisplayName,
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user.NicknameColor,
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UserStatus.Invisible,
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user.StatusMessage);
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await BroadcastToAllAsync(b => b.SendUserStatusChangedAsync(channelsBeforeDisconnect, presence));
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}
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}
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logger.LogInformation("{User} disconnected (ConnectionId: {ConnectionId})", username ?? "Unknown", connectionId);
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return username;
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}
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public async Task<(List<MessageDto> History, string? Error)> JoinChannelAsync(
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string connectionId, Guid userId, string username, string channelName)
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{
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channelName = channelName.ToLowerInvariant().Trim();
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if (!ValidationConstants.ChannelNameRegex().IsMatch(channelName))
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return ([], "Invalid channel name. Use 2-100 characters: letters, digits, underscores, or hyphens.");
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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var channel = await db.Channels.FirstOrDefaultAsync(c => c.Name == channelName);
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if (channel is null)
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return ([], $"Channel '{channelName}' does not exist. Create it first via the channel list.");
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var isNewJoin = presenceTracker.JoinChannel(username, channelName);
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if (isNewJoin)
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{
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await BroadcastToAllAsync(b => b.SendUserJoinedAsync(channelName, username, connectionId));
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logger.LogInformation("{User} joined channel '{Channel}'", username, channelName);
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}
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var history = await GetChannelHistoryInternalAsync(db, channelName, HubConstants.DefaultHistoryCount);
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return (history, null);
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}
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public async Task LeaveChannelAsync(string connectionId, string username, string channelName)
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{
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channelName = channelName.ToLowerInvariant().Trim();
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presenceTracker.LeaveChannel(username, channelName);
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await BroadcastToAllAsync(b => b.SendUserLeftAsync(channelName, username));
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logger.LogInformation("{User} left channel '{Channel}'", username, channelName);
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}
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public async Task<string?> SendMessageAsync(Guid userId, string username, string channelName, string content)
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{
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channelName = channelName.ToLowerInvariant().Trim();
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if (!ValidationConstants.ChannelNameRegex().IsMatch(channelName))
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return "Invalid channel name.";
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if (string.IsNullOrWhiteSpace(content))
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return "Message content cannot be empty.";
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if (content.Length > HubConstants.MaxMessageLength)
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return $"Message exceeds maximum length of {HubConstants.MaxMessageLength} characters.";
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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var channel = await db.Channels.FirstOrDefaultAsync(c => c.Name == channelName);
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if (channel is null)
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return $"Channel '{channelName}' does not exist.";
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var sender = await db.Users.FindAsync(userId);
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var message = new Message
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{
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Id = Guid.NewGuid(),
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Content = content,
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Type = MessageType.Text,
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SentAt = DateTimeOffset.UtcNow,
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ChannelId = channel.Id,
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SenderUserId = userId,
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SenderUsername = username,
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};
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db.Messages.Add(message);
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await db.SaveChangesAsync();
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var messageDto = new MessageDto(
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message.Id,
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message.Content,
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message.SenderUsername,
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sender?.NicknameColor,
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channelName,
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MessageType.Text,
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null,
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null,
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message.SentAt);
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await BroadcastToAllAsync(b => b.SendMessageToChannelAsync(channelName, messageDto));
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logger.LogDebug("{User} sent message in '{Channel}'", username, channelName);
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return null;
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}
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public async Task<List<MessageDto>> GetChannelHistoryAsync(string channelName, int count)
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{
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channelName = channelName.ToLowerInvariant().Trim();
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count = Math.Clamp(count, 1, ValidationConstants.MaxHistoryCount);
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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return await GetChannelHistoryInternalAsync(db, channelName, count);
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}
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public async Task<string?> UpdateStatusAsync(Guid userId, string username, UserStatus status, string? statusMessage)
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{
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if (statusMessage is not null && statusMessage.Length > ValidationConstants.MaxStatusMessageLength)
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return $"Status message must not exceed {ValidationConstants.MaxStatusMessageLength} characters.";
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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var user = await db.Users.FindAsync(userId);
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if (user is null)
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return "User not found.";
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user.Status = status;
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user.StatusMessage = statusMessage?.Trim();
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user.LastSeenAt = DateTimeOffset.UtcNow;
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await db.SaveChangesAsync();
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var presence = new UserPresenceDto(
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user.Username,
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user.DisplayName,
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user.NicknameColor,
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status,
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statusMessage);
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var channels = presenceTracker.GetChannelsForUser(username);
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await BroadcastToAllAsync(b => b.SendUserStatusChangedAsync(channels, presence));
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return null;
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}
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public async Task<List<UserPresenceDto>> GetOnlineUsersAsync(string channelName)
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{
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channelName = channelName.ToLowerInvariant().Trim();
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var onlineUsernames = presenceTracker.GetOnlineUsersInChannel(channelName);
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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return await db.Users
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.Where(u => onlineUsernames.Contains(u.Username))
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.Select(u => new UserPresenceDto(
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u.Username,
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u.DisplayName,
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u.NicknameColor,
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u.Status,
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u.StatusMessage))
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.ToListAsync();
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}
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public Task BroadcastMessageAsync(string channelName, MessageDto message)
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=> BroadcastToAllAsync(b => b.SendMessageToChannelAsync(channelName, message));
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public Task BroadcastChannelUpdatedAsync(ChannelDto channel, string? channelName = null)
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=> BroadcastToAllAsync(b => b.SendChannelUpdatedAsync(channel, channelName));
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private async Task BroadcastToAllAsync(Func<IChatBroadcaster, Task> action)
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{
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foreach (var broadcaster in broadcasters)
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{
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try
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{
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await action(broadcaster);
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}
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catch (Exception ex)
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{
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logger.LogError(ex, "Broadcaster {Type} failed", broadcaster.GetType().Name);
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}
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}
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}
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public async Task<UserProfileDto?> GetUserProfileAsync(string username)
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{
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username = username.ToLowerInvariant();
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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var user = await db.Users.FirstOrDefaultAsync(u => u.Username == username);
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if (user is null) return null;
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return new UserProfileDto(
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user.Id, user.Username, user.DisplayName, user.Bio,
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user.NicknameColor, user.AvatarAscii, user.Status,
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user.StatusMessage, user.CreatedAt, user.LastSeenAt);
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}
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public async Task<(string? Topic, bool Exists)> GetChannelTopicAsync(string channelName)
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{
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channelName = channelName.ToLowerInvariant().Trim();
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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var channel = await db.Channels.FirstOrDefaultAsync(c => c.Name == channelName);
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if (channel is null) return (null, false);
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return (channel.Topic, true);
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}
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public async Task<List<ChannelListItem>> GetChannelListAsync()
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{
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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var channels = await db.Channels.OrderBy(c => c.Name).ToListAsync();
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return channels.Select(c => new ChannelListItem(
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c.Name,
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c.Topic,
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presenceTracker.GetOnlineUsersInChannel(c.Name).Count)).ToList();
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}
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public Task<List<string>> GetChannelsForUserAsync(string username)
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=> Task.FromResult(presenceTracker.GetChannelsForUser(username));
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public async Task<(Guid UserId, string Username)?> AuthenticateUserAsync(string username, string password)
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{
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username = username.ToLowerInvariant();
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using var scope = scopeFactory.CreateScope();
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var db = scope.ServiceProvider.GetRequiredService<EchoHubDbContext>();
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var user = await db.Users.FirstOrDefaultAsync(u => u.Username == username);
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if (user is null) return null;
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if (!BCrypt.Net.BCrypt.Verify(password, user.PasswordHash))
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return null;
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return (user.Id, user.Username);
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}
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private static async Task<List<MessageDto>> GetChannelHistoryInternalAsync(EchoHubDbContext db, string channelName, int count)
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{
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var channel = await db.Channels.FirstOrDefaultAsync(c => c.Name == channelName);
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if (channel is null)
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return [];
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var messages = await db.Messages
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.Where(m => m.ChannelId == channel.Id)
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.OrderByDescending(m => m.SentAt)
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.Take(count)
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.Join(db.Users,
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m => m.SenderUserId,
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u => u.Id,
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(m, u) => new MessageDto(
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m.Id,
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m.Content,
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m.SenderUsername,
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u.NicknameColor,
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channelName,
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m.Type,
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m.AttachmentUrl,
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m.AttachmentFileName,
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m.SentAt))
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.ToListAsync();
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messages.Reverse();
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return messages;
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}
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}
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