1 files changed, 179 insertions, 0 deletions
diff --git a/ExampleBots/MediaModeratorPoC/Bot/MediaModBot.cs b/ExampleBots/MediaModeratorPoC/Bot/MediaModBot.cs
new file mode 100644
index 0000000..1b379c7
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/MediaModBot.cs
@@ -0,0 +1,179 @@
+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;
+    }
+}