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using System.Diagnostics.CodeAnalysis;
using System.Text.RegularExpressions;
using ArcaneLibs.Extensions;
using LibMatrix;
using LibMatrix.Homeservers;
using LibMatrix.Responses;
using LibMatrix.RoomTypes;
using LibMatrix.Services;
using LibMatrix.StateEventTypes.Spec;
using MediaModeratorPoC.Bot.AccountData;
using MediaModeratorPoC.Bot.Interfaces;
using MediaModeratorPoC.Bot.StateEventTypes;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
namespace MediaModeratorPoC.Bot;
public class MediaModBot : IHostedService {
private readonly HomeserverProviderService _homeserverProviderService;
private readonly ILogger<MediaModBot> _logger;
private readonly MediaModBotConfiguration _configuration;
private readonly IEnumerable<ICommand> _commands;
private GenericRoom PolicyRoom;
public MediaModBot(HomeserverProviderService homeserverProviderService, ILogger<MediaModBot> logger,
MediaModBotConfiguration configuration, IServiceProvider services) {
logger.LogInformation("MRUBot hosted service instantiated!");
_homeserverProviderService = homeserverProviderService;
_logger = logger;
_configuration = configuration;
_logger.LogInformation("Getting commands...");
_commands = services.GetServices<ICommand>();
_logger.LogInformation("Got {} commands!", _commands.Count());
}
/// <summary>Triggered when the application host is ready to start the service.</summary>
/// <param name="cancellationToken">Indicates that the start process has been aborted.</param>
[SuppressMessage("ReSharper", "FunctionNeverReturns")]
public async Task StartAsync(CancellationToken cancellationToken) {
Directory.GetFiles("bot_data/cache").ToList().ForEach(File.Delete);
AuthenticatedHomeserverGeneric hs;
try {
hs = await _homeserverProviderService.GetAuthenticatedWithToken(_configuration.Homeserver,
_configuration.AccessToken);
}
catch (Exception e) {
_logger.LogError("{}", e.Message);
throw;
}
BotData botData;
try {
botData = await hs.GetAccountData<BotData>("gay.rory.media_moderator_poc_data");
}
catch (Exception e) {
if (e is not MatrixException { ErrorCode: "M_NOT_FOUND" }) {
_logger.LogError("{}", e.ToString());
throw;
}
botData = new BotData();
var creationContent = CreateRoomRequest.CreatePrivate(hs, name: "Media Moderator PoC - Control room", roomAliasName: "media-moderator-poc-control-room");
creationContent.Invite = _configuration.Admins;
creationContent.CreationContent["type"] = "gay.rory.media_moderator_poc.control_room";
botData.ControlRoom = (await hs.CreateRoom(creationContent)).RoomId;
//set access rules to allow joining via control room
creationContent.InitialState.Add(new StateEvent {
Type = "m.room.join_rules",
StateKey = "",
TypedContent = new JoinRulesEventData() {
JoinRule = "knock_restricted",
Allow = new() {
new JoinRulesEventData.AllowEntry() {
Type = "m.room_membership",
RoomId = botData.ControlRoom
}
}
}
});
creationContent.Name = "Media Moderator PoC - Log room";
creationContent.RoomAliasName = "media-moderator-poc-log-room";
creationContent.CreationContent["type"] = "gay.rory.media_moderator_poc.log_room";
botData.LogRoom = (await hs.CreateRoom(creationContent)).RoomId;
creationContent.Name = "Media Moderator PoC - Policy room";
creationContent.RoomAliasName = "media-moderator-poc-policy-room";
creationContent.CreationContent["type"] = "gay.rory.media_moderator_poc.policy_room";
botData.PolicyRoom = (await hs.CreateRoom(creationContent)).RoomId;
await hs.SetAccountData("gay.rory.media_moderator_poc_data", botData);
}
PolicyRoom = await hs.GetRoom(botData.PolicyRoom);
hs.SyncHelper.InviteReceivedHandlers.Add(async Task (args) => {
var inviteEvent =
args.Value.InviteState.Events.FirstOrDefault(x =>
x.Type == "m.room.member" && x.StateKey == hs.WhoAmI.UserId);
_logger.LogInformation(
$"Got invite to {args.Key} by {inviteEvent.Sender} with reason: {(inviteEvent.TypedContent as RoomMemberEventData).Reason}");
if (inviteEvent.Sender.EndsWith(":rory.gay") || inviteEvent.Sender.EndsWith(":conduit.rory.gay")) {
try {
var senderProfile = await hs.GetProfile(inviteEvent.Sender);
await (await hs.GetRoom(args.Key)).JoinAsync(reason: $"I was invited by {senderProfile.DisplayName ?? inviteEvent.Sender}!");
}
catch (Exception e) {
_logger.LogError("{}", e.ToString());
await (await hs.GetRoom(args.Key)).LeaveAsync(reason: "I was unable to join the room: " + e);
}
}
});
hs.SyncHelper.TimelineEventHandlers.Add(async @event => {
_logger.LogInformation(
"Got timeline event in {}: {}", @event.RoomId, @event.ToJson(indent: true, ignoreNull: true));
var room = await hs.GetRoom(@event.RoomId);
// _logger.LogInformation(eventResponse.ToJson(indent: false));
if (@event is { Type: "m.room.message", TypedContent: RoomMessageEventData message }) {
if (message is { MessageType: "m.text" } && message.Body.StartsWith(_configuration.Prefix)) {
var command = _commands.FirstOrDefault(x => x.Name == message.Body.Split(' ')[0][_configuration.Prefix.Length..]);
if (command == null) {
await room.SendMessageEventAsync("m.room.message",
new RoomMessageEventData {
MessageType = "m.notice",
Body = "Command not found!"
});
return;
}
var ctx = new CommandContext {
Room = room,
MessageEvent = @event,
Homeserver = hs
};
if (await command.CanInvoke(ctx)) {
await command.Invoke(ctx);
}
else {
await room.SendMessageEventAsync("m.room.message",
new RoomMessageEventData {
MessageType = "m.notice",
Body = "You do not have permission to run this command!"
});
}
}
}
});
await hs.SyncHelper.RunSyncLoop(cancellationToken: cancellationToken);
}
/// <summary>Triggered when the application host is performing a graceful shutdown.</summary>
/// <param name="cancellationToken">Indicates that the shutdown process should no longer be graceful.</param>
public Task StopAsync(CancellationToken cancellationToken) {
_logger.LogInformation("Shutting down bot!");
return Task.CompletedTask;
}
private async Task<bool> CheckMedia(StateEventResponse @event) {
var stateList = PolicyRoom.GetFullStateAsync();
await foreach (var state in stateList) {
if(state.Type != "gay.rory.media_moderator_poc.rule.media") continue;
var rule = state.TypedContent as MediaPolicyStateEventData;
rule.Entity = rule.Entity.Replace("\\*", ".*").Replace("\\?", ".");
var regex = new Regex(rule.Entity);
if (regex.IsMatch(@event.RawContent["url"].GetValue<string>())) {
_logger.LogInformation("{url} matched rule {rule}", @event.RawContent["url"], rule.ToJson(ignoreNull: true));
return true;
}
}
return false;
}
}
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