diff --git a/MatrixUtils.DmSpaced/ModerationBot.cs b/MatrixUtils.DmSpaced/ModerationBot.cs
new file mode 100644
index 0000000..6e534fc
--- /dev/null
+++ b/MatrixUtils.DmSpaced/ModerationBot.cs
@@ -0,0 +1,298 @@
+using ArcaneLibs.Extensions;
+using LibMatrix;
+using LibMatrix.EventTypes.Spec;
+using LibMatrix.EventTypes.Spec.State;
+using LibMatrix.EventTypes.Spec.State.Policy;
+using LibMatrix.Helpers;
+using LibMatrix.Homeservers;
+using LibMatrix.RoomTypes;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+
+namespace ModerationBot;
+
+public class ModerationBot(AuthenticatedHomeserverGeneric hs, ILogger<ModerationBot> logger, ModerationBotConfiguration configuration, PolicyEngine engine) : IHostedService {
+ private Task _listenerTask;
+
+ // private GenericRoom _policyRoom;
+ private GenericRoom? _logRoom;
+ private GenericRoom? _controlRoom;
+
+ /// <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>
+ public async Task StartAsync(CancellationToken cancellationToken) {
+ _listenerTask = Run(cancellationToken);
+ logger.LogInformation("Bot started!");
+ }
+
+ private async Task Run(CancellationToken cancellationToken) {
+ if (Directory.Exists("bot_data/cache"))
+ Directory.GetFiles("bot_data/cache").ToList().ForEach(File.Delete);
+
+ BotData botData;
+
+ try {
+ logger.LogInformation("Fetching bot account data...");
+ botData = await hs.GetAccountDataAsync<BotData>("gay.rory.moderation_bot_data");
+ logger.LogInformation("Got bot account data...");
+ }
+ catch (Exception e) {
+ logger.LogInformation("Could not fetch bot account data... {}", e.Message);
+ if (e is not MatrixException { ErrorCode: "M_NOT_FOUND" }) {
+ logger.LogError("{}", e.ToString());
+ throw;
+ }
+
+ botData = null;
+ }
+
+ botData = await FirstRunTasks.ConstructBotData(hs, configuration, botData);
+
+ // _policyRoom = hs.GetRoom(botData.PolicyRoom ?? botData.ControlRoom);
+ _logRoom = hs.GetRoom(botData.LogRoom ?? botData.ControlRoom);
+ _controlRoom = hs.GetRoom(botData.ControlRoom);
+ foreach (var configurationAdmin in configuration.Admins) {
+ var pls = await _controlRoom.GetPowerLevelsAsync();
+ if (pls is null) {
+ await _logRoom?.SendMessageEventAsync(MessageFormatter.FormatWarning($"Control room has no m.room.power_levels?"));
+ continue;
+ }
+ pls.SetUserPowerLevel(configurationAdmin, pls.GetUserPowerLevel(hs.UserId));
+ await _controlRoom.SendStateEventAsync(RoomPowerLevelEventContent.EventId, pls);
+ }
+ var syncHelper = new SyncHelper(hs);
+
+ List<string> admins = new();
+
+#pragma warning disable CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
+ Task.Run(async () => {
+ while (!cancellationToken.IsCancellationRequested) {
+ var controlRoomMembers = _controlRoom.GetMembersEnumerableAsync();
+ var pls = await _controlRoom.GetPowerLevelsAsync();
+ await foreach (var member in controlRoomMembers) {
+ if ((member.TypedContent as RoomMemberEventContent)?
+ .Membership == "join" && pls.UserHasTimelinePermission(member.Sender, RoomMessageEventContent.EventId)) admins.Add(member.StateKey);
+ }
+
+ await Task.Delay(TimeSpan.FromMinutes(5), cancellationToken);
+ }
+ }, cancellationToken);
+#pragma warning restore CS4014 // Because this call is not awaited, execution of the current method continues before the call is completed
+
+ syncHelper.InviteReceivedHandlers.Add(async Task (args) => {
+ var inviteEvent =
+ args.Value.InviteState.Events.FirstOrDefault(x =>
+ x.Type == "m.room.member" && x.StateKey == hs.UserId);
+ logger.LogInformation("Got invite to {RoomId} by {Sender} with reason: {Reason}", args.Key, inviteEvent!.Sender,
+ (inviteEvent.TypedContent as RoomMemberEventContent)!.Reason);
+ await _logRoom.SendMessageEventAsync(MessageFormatter.FormatSuccess($"Bot invited to {MessageFormatter.HtmlFormatMention(args.Key)} by {MessageFormatter.HtmlFormatMention(inviteEvent.Sender)}"));
+ if (admins.Contains(inviteEvent.Sender)) {
+ try {
+ await _logRoom.SendMessageEventAsync(MessageFormatter.FormatSuccess($"Joining {MessageFormatter.HtmlFormatMention(args.Key)}..."));
+ var senderProfile = await hs.GetProfileAsync(inviteEvent.Sender);
+ await hs.GetRoom(args.Key).JoinAsync(reason: $"I was invited by {senderProfile.DisplayName ?? inviteEvent.Sender}!");
+ }
+ catch (Exception e) {
+ logger.LogError("{}", e.ToString());
+ await _logRoom.SendMessageEventAsync(MessageFormatter.FormatException("Could not join room", e));
+ await hs.GetRoom(args.Key).LeaveAsync(reason: "I was unable to join the room: " + e);
+ }
+ }
+ });
+
+ syncHelper.TimelineEventHandlers.Add(async @event => {
+ var room = hs.GetRoom(@event.RoomId);
+ try {
+ logger.LogInformation(
+ "Got timeline event in {}: {}", @event.RoomId, @event.ToJson(indent: true, ignoreNull: true));
+
+ if (@event != null && (
+ @event.MappedType.IsAssignableTo(typeof(BasePolicy))
+ || @event.MappedType.IsAssignableTo(typeof(PolicyRuleEventContent))
+ )) {
+ await LogPolicyChange(@event);
+ await engine.ReloadActivePolicyListById(@event.RoomId);
+ }
+
+ var rules = await engine.GetMatchingPolicies(@event);
+ foreach (var matchedRule in rules) {
+ await _logRoom.SendMessageEventAsync(MessageFormatter.FormatSuccessJson(
+ $"{MessageFormatter.HtmlFormatMessageLink(eventId: @event.EventId, roomId: room.RoomId, displayName: "Event")} matched {MessageFormatter.HtmlFormatMessageLink(eventId: @matchedRule.OriginalEvent.EventId, roomId: matchedRule.PolicyList.Room.RoomId, displayName: "rule")}", @matchedRule.OriginalEvent.RawContent));
+ }
+
+ if (configuration.DemoMode) {
+ // foreach (var matchedRule in rules) {
+ // await room.SendMessageEventAsync(MessageFormatter.FormatSuccessJson(
+ // $"{MessageFormatter.HtmlFormatMessageLink(eventId: @event.EventId, roomId: room.RoomId, displayName: "Event")} matched {MessageFormatter.HtmlFormatMessageLink(eventId: @matchedRule.EventId, roomId: matchedRule.RoomId, displayName: "rule")}", @matchedRule.RawContent));
+ // }
+ return;
+ }
+ //
+ // if (@event is { Type: "m.room.message", TypedContent: RoomMessageEventContent message }) {
+ // if (message is { MessageType: "m.image" }) {
+ // //check media
+ // // var matchedPolicy = await CheckMedia(@event);
+ // var matchedPolicy = rules.FirstOrDefault();
+ // if (matchedPolicy is null) return;
+ // var matchedpolicyData = matchedPolicy.TypedContent as MediaPolicyEventContent;
+ // await _logRoom.SendMessageEventAsync(
+ // new RoomMessageEventContent(
+ // body:
+ // $"User {MessageFormatter.HtmlFormatMention(@event.Sender)} posted an image in {MessageFormatter.HtmlFormatMention(room.RoomId)} that matched rule {matchedPolicy.StateKey}, applying action {matchedpolicyData.Recommendation}, as described in rule: {matchedPolicy.RawContent!.ToJson(ignoreNull: true)}",
+ // messageType: "m.text") {
+ // Format = "org.matrix.custom.html",
+ // FormattedBody =
+ // $"<font color=\"#FFFF00\">User {MessageFormatter.HtmlFormatMention(@event.Sender)} posted an image in {MessageFormatter.HtmlFormatMention(room.RoomId)} that matched rule {matchedPolicy.StateKey}, applying action {matchedpolicyData.Recommendation}, as described in rule: <pre>{matchedPolicy.RawContent!.ToJson(ignoreNull: true)}</pre></font>"
+ // });
+ // switch (matchedpolicyData.Recommendation) {
+ // case "warn_admins": {
+ // await _controlRoom.SendMessageEventAsync(
+ // new RoomMessageEventContent(
+ // body: $"{string.Join(' ', admins)}\nUser {MessageFormatter.HtmlFormatMention(@event.Sender)} posted a banned image {message.Url}",
+ // messageType: "m.text") {
+ // Format = "org.matrix.custom.html",
+ // FormattedBody = $"{string.Join(' ', admins.Select(u => MessageFormatter.HtmlFormatMention(u)))}\n" +
+ // $"<font color=\"#FF0000\">User {MessageFormatter.HtmlFormatMention(@event.Sender)} posted a banned image <a href=\"{message.Url}\">{message.Url}</a></font>"
+ // });
+ // break;
+ // }
+ // case "warn": {
+ // await room.SendMessageEventAsync(
+ // new RoomMessageEventContent(
+ // body: $"Please be careful when posting this image: {matchedpolicyData.Reason ?? "No reason specified"}",
+ // messageType: "m.text") {
+ // Format = "org.matrix.custom.html",
+ // FormattedBody =
+ // $"<font color=\"#FFFF00\">Please be careful when posting this image: {matchedpolicyData.Reason ?? "No reason specified"}</a></font>"
+ // });
+ // break;
+ // }
+ // case "redact": {
+ // await room.RedactEventAsync(@event.EventId, matchedpolicyData.Reason ?? "No reason specified");
+ // break;
+ // }
+ // case "spoiler": {
+ // // <blockquote>
+ // // <a href=\"https://matrix.to/#/@emma:rory.gay\">@emma:rory.gay</a><br>
+ // // <a href=\"https://codeberg.org/crimsonfork/CN\"></a>
+ // // <font color=\"#dc143c\" data-mx-color=\"#dc143c\">
+ // // <b>CN</b>
+ // // </font>:
+ // // <a href=\"https://the-apothecary.club/_matrix/media/v3/download/rory.gay/sLkdxUhipiQaFwRkXcPSRwdg\">test</a><br>
+ // // <span data-mx-spoiler=\"\"><a href=\"https://the-apothecary.club/_matrix/media/v3/download/rory.gay/sLkdxUhipiQaFwRkXcPSRwdg\">
+ // // <img src=\"mxc://rory.gay/sLkdxUhipiQaFwRkXcPSRwdg\" height=\"69\"></a>
+ // // </span>
+ // // </blockquote>
+ // await room.SendMessageEventAsync(
+ // new RoomMessageEventContent(
+ // body:
+ // $"Please be careful when posting this image: {matchedpolicyData.Reason}, I have spoilered it for you:",
+ // messageType: "m.text") {
+ // Format = "org.matrix.custom.html",
+ // FormattedBody =
+ // $"<font color=\"#FFFF00\">Please be careful when posting this image: {matchedpolicyData.Reason}, I have spoilered it for you:</a></font>"
+ // });
+ // var imageUrl = message.Url;
+ // await room.SendMessageEventAsync(
+ // new RoomMessageEventContent(body: $"CN: {imageUrl}",
+ // messageType: "m.text") {
+ // Format = "org.matrix.custom.html",
+ // FormattedBody = $"""
+ // <blockquote>
+ // <font color=\"#dc143c\" data-mx-color=\"#dc143c\">
+ // <b>CN</b>
+ // </font>:
+ // <a href=\"{imageUrl}\">{matchedpolicyData.Reason}</a><br>
+ // <span data-mx-spoiler=\"\">
+ // <a href=\"{imageUrl}\">
+ // <img src=\"{imageUrl}\" height=\"69\">
+ // </a>
+ // </span>
+ // </blockquote>
+ // """
+ // });
+ // await room.RedactEventAsync(@event.EventId, "Automatically spoilered: " + matchedpolicyData.Reason);
+ // break;
+ // }
+ // case "mute": {
+ // await room.RedactEventAsync(@event.EventId, matchedpolicyData.Reason);
+ // //change powerlevel to -1
+ // var currentPls = await room.GetPowerLevelsAsync();
+ // if (currentPls is null) {
+ // logger.LogWarning("Unable to get power levels for {room}", room.RoomId);
+ // await _logRoom.SendMessageEventAsync(
+ // MessageFormatter.FormatError($"Unable to get power levels for {MessageFormatter.HtmlFormatMention(room.RoomId)}"));
+ // return;
+ // }
+ //
+ // currentPls.Users ??= new();
+ // currentPls.Users[@event.Sender] = -1;
+ // await room.SendStateEventAsync("m.room.power_levels", currentPls);
+ // break;
+ // }
+ // case "kick": {
+ // await room.RedactEventAsync(@event.EventId, matchedpolicyData.Reason);
+ // await room.KickAsync(@event.Sender, matchedpolicyData.Reason);
+ // break;
+ // }
+ // case "ban": {
+ // await room.RedactEventAsync(@event.EventId, matchedpolicyData.Reason);
+ // await room.BanAsync(@event.Sender, matchedpolicyData.Reason);
+ // break;
+ // }
+ // default: {
+ // throw new ArgumentOutOfRangeException("recommendation",
+ // $"Unknown response type {matchedpolicyData.Recommendation}!");
+ // }
+ // }
+ // }
+ // }
+ }
+ catch (Exception e) {
+ logger.LogError("{}", e.ToString());
+ await _controlRoom.SendMessageEventAsync(
+ MessageFormatter.FormatException($"Unable to process event in {MessageFormatter.HtmlFormatMention(room.RoomId)}", e));
+ await _logRoom.SendMessageEventAsync(
+ MessageFormatter.FormatException($"Unable to process event in {MessageFormatter.HtmlFormatMention(room.RoomId)}", e));
+ await using var stream = new MemoryStream(e.ToString().AsBytes().ToArray());
+ await _controlRoom.SendFileAsync("error.log.cs", stream);
+ await _logRoom.SendFileAsync("error.log.cs", stream);
+ }
+ });
+ await engine.ReloadActivePolicyLists();
+ await syncHelper.RunSyncLoopAsync();
+ }
+
+ private async Task LogPolicyChange(StateEventResponse changeEvent) {
+ var room = hs.GetRoom(changeEvent.RoomId!);
+ var message = MessageFormatter.FormatWarning($"Policy change detected in {MessageFormatter.HtmlFormatMessageLink(changeEvent.RoomId, changeEvent.EventId, [hs.ServerName], await room.GetNameOrFallbackAsync())}!");
+ message = message.ConcatLine(new RoomMessageEventContent(body: $"Policy type: {changeEvent.Type} -> {changeEvent.MappedType.Name}") {
+ FormattedBody = $"Policy type: {changeEvent.Type} -> {changeEvent.MappedType.Name}"
+ });
+ var isUpdated = changeEvent.Unsigned.PrevContent is { Count: > 0 };
+ var isRemoved = changeEvent.RawContent is not { Count: > 0 };
+ // if (isUpdated) {
+ // message = message.ConcatLine(MessageFormatter.FormatSuccess("Rule updated!"));
+ // message = message.ConcatLine(MessageFormatter.FormatSuccessJson("Old rule:", changeEvent.Unsigned.PrevContent!));
+ // }
+ // else if (isRemoved) {
+ // message = message.ConcatLine(MessageFormatter.FormatWarningJson("Rule removed!", changeEvent.Unsigned.PrevContent!));
+ // }
+ // else {
+ // message = message.ConcatLine(MessageFormatter.FormatSuccess("New rule added!"));
+ // }
+ message = message.ConcatLine(MessageFormatter.FormatSuccessJson($"{(isUpdated ? "Updated" : isRemoved ? "Removed" : "New")} rule: {changeEvent.StateKey}", changeEvent.RawContent!));
+ if (isRemoved || isUpdated) {
+ message = message.ConcatLine(MessageFormatter.FormatSuccessJson("Old content: ", changeEvent.Unsigned.PrevContent!));
+ }
+
+ await _logRoom.SendMessageEventAsync(message);
+ }
+
+ /// <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 async Task StopAsync(CancellationToken cancellationToken) {
+ logger.LogInformation("Shutting down bot!");
+ }
+
+}
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