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-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/AccountData/BotData.cs7
-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/Commands/BanMediaCommand.cs66
-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/Commands/CmdCommand.cs46
-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/Commands/HelpCommand.cs25
-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/Commands/PingCommand.cs15
-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/FileStorageProvider.cs38
-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/Interfaces/CommandContext.cs14
-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/Interfaces/ICommand.cs12
-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/MediaModBot.cs179
-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/MediaModBotConfiguration.cs13
-rw-r--r--ExampleBots/MediaModeratorPoC/Bot/StateEventTypes/MediaPolicyStateEventData.cs44
11 files changed, 459 insertions, 0 deletions
diff --git a/ExampleBots/MediaModeratorPoC/Bot/AccountData/BotData.cs b/ExampleBots/MediaModeratorPoC/Bot/AccountData/BotData.cs
new file mode 100644
index 0000000..9b92948
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/AccountData/BotData.cs
@@ -0,0 +1,7 @@
+namespace MediaModeratorPoC.Bot.AccountData;
+
+public class BotData {
+    public string ControlRoom { get; set; } = "";
+    public string? LogRoom { get; set; } = "";
+    public string? PolicyRoom { get; set; } = "";
+}
diff --git a/ExampleBots/MediaModeratorPoC/Bot/Commands/BanMediaCommand.cs b/ExampleBots/MediaModeratorPoC/Bot/Commands/BanMediaCommand.cs
new file mode 100644
index 0000000..d0b5674
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/Commands/BanMediaCommand.cs
@@ -0,0 +1,66 @@
+using LibMatrix.Responses;
+using LibMatrix.StateEventTypes.Spec;
+using MediaModeratorPoC.Bot.AccountData;
+using MediaModeratorPoC.Bot.Interfaces;
+using MediaModeratorPoC.Bot.StateEventTypes;
+
+namespace MediaModeratorPoC.Bot.Commands;
+
+public class BanMediaCommand(IServiceProvider services) : ICommand {
+    public string Name { get; } = "banmedia";
+    public string Description { get; } = "Create a policy banning a piece of media, must be used in reply to a message";
+
+    public async Task<bool> CanInvoke(CommandContext ctx) {
+        //check if user is admin in control room
+        var botData = await ctx.Homeserver.GetAccountData<BotData>("gay.rory.media_moderator_poc_data");
+        var controlRoom = await ctx.Homeserver.GetRoom(botData.ControlRoom);
+        var powerLevels = await controlRoom.GetPowerLevelAsync();
+        var isAdmin = powerLevels.UserHasPermission(ctx.MessageEvent.Sender, "m.room.ban");
+        if (!isAdmin) {
+            // await ctx.Reply("You do not have permission to use this command!");
+            var logRoom = await ctx.Homeserver.GetRoom(botData.LogRoom);
+            await logRoom.SendMessageEventAsync("m.room.message", new RoomMessageEventData {
+                Body = $"User {ctx.MessageEvent.Sender} tried to use command {Name} but does not have permission!",
+                MessageType = "m.text"
+            });
+        }
+        return isAdmin;
+    }
+
+    public async Task Invoke(CommandContext ctx) {
+        //check if reply
+        if ((ctx.MessageEvent.TypedContent as RoomMessageEventData).RelatesTo is { InReplyTo: not null } ) {
+            var messageContent = ctx.MessageEvent.TypedContent as RoomMessageEventData;
+            try {
+                var botData = await ctx.Homeserver.GetAccountData<BotData>("gay.rory.media_moderator_poc_data");
+                var policyRoom = await ctx.Homeserver.GetRoom(botData.PolicyRoom);
+                var logRoom = await ctx.Homeserver.GetRoom(botData.LogRoom);
+                await logRoom.SendMessageEventAsync("m.room.message", new RoomMessageEventData {
+                    Body = $"User {ctx.MessageEvent.Sender} is trying to ban media {messageContent.RelatesTo!.InReplyTo!.EventId}",
+                    MessageType = "m.text"
+                });
+
+                //get replied message
+                var repliedMessage = await ctx.Room.GetEvent<StateEventResponse>(messageContent.RelatesTo!.InReplyTo!.EventId);
+
+                await policyRoom.SendStateEventAsync("gay.rory.media_moderator_poc.rule.media", new MediaPolicyStateEventData() {
+                    Entity = (repliedMessage.TypedContent as RoomMessageEventData).Url!,
+                    Reason = string.Join(' ', ctx.Args),
+                    Recommendation = PolicyRecommendationTypes.Ban
+                });
+            }
+            catch (Exception e) {
+                await ctx.Room.SendMessageEventAsync("m.room.message", new RoomMessageEventData {
+                    Body = $"Error: {e.Message}",
+                    MessageType = "m.text"
+                });
+            }
+        }
+        else {
+            await ctx.Room.SendMessageEventAsync("m.room.message", new RoomMessageEventData {
+                Body = "This command must be used in reply to a message!",
+                MessageType = "m.text",
+            });
+        }
+    }
+}
diff --git a/ExampleBots/MediaModeratorPoC/Bot/Commands/CmdCommand.cs b/ExampleBots/MediaModeratorPoC/Bot/Commands/CmdCommand.cs
new file mode 100644
index 0000000..14c4334
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/Commands/CmdCommand.cs
@@ -0,0 +1,46 @@
+using LibMatrix.StateEventTypes.Spec;
+using MediaModeratorPoC.Bot.Interfaces;
+
+namespace MediaModeratorPoC.Bot.Commands;
+
+public class CmdCommand : ICommand {
+    public string Name => "cmd";
+    public string Description => "Runs a command on the host system";
+
+    public Task<bool> CanInvoke(CommandContext ctx) {
+        return Task.FromResult(ctx.MessageEvent.Sender.EndsWith(":rory.gay"));
+    }
+
+    public async Task Invoke(CommandContext ctx) {
+        var cmd = ctx.Args.Aggregate("\"", (current, arg) => current + arg + " ");
+
+        cmd = cmd.Trim();
+        cmd += "\"";
+
+        await ctx.Room.SendMessageEventAsync("m.room.message", new RoomMessageEventData {
+            Body = $"Command being executed: `{cmd}`"
+        });
+
+        var output = ArcaneLibs.Util.GetCommandOutputSync(
+                Environment.OSVersion.Platform == PlatformID.Unix ? "/bin/sh" : "cmd.exe",
+                (Environment.OSVersion.Platform == PlatformID.Unix ? "-c " : "/c ") + cmd)
+            .Replace("`", "\\`")
+            .Split("\n").ToList();
+        foreach (var _out in output) Console.WriteLine($"{_out.Length:0000} {_out}");
+
+        var msg = "";
+        while (output.Count > 0) {
+            Console.WriteLine("Adding: " + output[0]);
+            msg += output[0] + "\n";
+            output.RemoveAt(0);
+            if ((output.Count > 0 && (msg + output[0]).Length > 64000) || output.Count == 0) {
+                await ctx.Room.SendMessageEventAsync("m.room.message", new RoomMessageEventData {
+                    FormattedBody = $"```ansi\n{msg}\n```",
+                    // Body = Markdig.Markdown.ToHtml(msg),
+                    Format = "org.matrix.custom.html"
+                });
+                msg = "";
+            }
+        }
+    }
+}
diff --git a/ExampleBots/MediaModeratorPoC/Bot/Commands/HelpCommand.cs b/ExampleBots/MediaModeratorPoC/Bot/Commands/HelpCommand.cs
new file mode 100644
index 0000000..8d63daa
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/Commands/HelpCommand.cs
@@ -0,0 +1,25 @@
+using System.Text;
+using LibMatrix.StateEventTypes.Spec;
+using MediaModeratorPoC.Bot.Interfaces;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace MediaModeratorPoC.Bot.Commands;
+
+public class HelpCommand(IServiceProvider services) : ICommand {
+    public string Name { get; } = "help";
+    public string Description { get; } = "Displays this help message";
+
+    public async Task Invoke(CommandContext ctx) {
+        var sb = new StringBuilder();
+        sb.AppendLine("Available commands:");
+        var commands = services.GetServices<ICommand>().ToList();
+        foreach (var command in commands) {
+            sb.AppendLine($"- {command.Name}: {command.Description}");
+        }
+
+        await ctx.Room.SendMessageEventAsync("m.room.message", new RoomMessageEventData {
+            MessageType = "m.notice",
+            Body = sb.ToString()
+        });
+    }
+}
diff --git a/ExampleBots/MediaModeratorPoC/Bot/Commands/PingCommand.cs b/ExampleBots/MediaModeratorPoC/Bot/Commands/PingCommand.cs
new file mode 100644
index 0000000..f9f46c2
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/Commands/PingCommand.cs
@@ -0,0 +1,15 @@
+using LibMatrix.StateEventTypes.Spec;
+using MediaModeratorPoC.Bot.Interfaces;
+
+namespace MediaModeratorPoC.Bot.Commands;
+
+public class PingCommand : ICommand {
+    public string Name { get; } = "ping";
+    public string Description { get; } = "Pong!";
+
+    public async Task Invoke(CommandContext ctx) {
+        await ctx.Room.SendMessageEventAsync("m.room.message", new RoomMessageEventData {
+            Body = "pong!"
+        });
+    }
+}
diff --git a/ExampleBots/MediaModeratorPoC/Bot/FileStorageProvider.cs b/ExampleBots/MediaModeratorPoC/Bot/FileStorageProvider.cs
new file mode 100644
index 0000000..d5b991a
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/FileStorageProvider.cs
@@ -0,0 +1,38 @@
+using System.Text.Json;
+using ArcaneLibs.Extensions;
+using LibMatrix.Interfaces.Services;
+using Microsoft.Extensions.Logging;
+
+namespace MediaModeratorPoC.Bot;
+
+public class FileStorageProvider : IStorageProvider {
+    private readonly ILogger<FileStorageProvider> _logger;
+
+    public string TargetPath { get; }
+
+    /// <summary>
+    /// Creates a new instance of <see cref="FileStorageProvider" />.
+    /// </summary>
+    /// <param name="targetPath"></param>
+    public FileStorageProvider(string targetPath) {
+        new Logger<FileStorageProvider>(new LoggerFactory()).LogInformation("test");
+        Console.WriteLine($"Initialised FileStorageProvider with path {targetPath}");
+        TargetPath = targetPath;
+        if(!Directory.Exists(targetPath)) {
+            Directory.CreateDirectory(targetPath);
+        }
+    }
+
+    public async Task SaveObjectAsync<T>(string key, T value) => await File.WriteAllTextAsync(Path.Join(TargetPath, key), value?.ToJson());
+
+    public async Task<T?> LoadObjectAsync<T>(string key) => JsonSerializer.Deserialize<T>(await File.ReadAllTextAsync(Path.Join(TargetPath, key)));
+
+    public Task<bool> ObjectExistsAsync(string key) => Task.FromResult(File.Exists(Path.Join(TargetPath, key)));
+
+    public Task<List<string>> GetAllKeysAsync() => Task.FromResult(Directory.GetFiles(TargetPath).Select(Path.GetFileName).ToList());
+
+    public Task DeleteObjectAsync(string key) {
+        File.Delete(Path.Join(TargetPath, key));
+        return Task.CompletedTask;
+    }
+}
diff --git a/ExampleBots/MediaModeratorPoC/Bot/Interfaces/CommandContext.cs b/ExampleBots/MediaModeratorPoC/Bot/Interfaces/CommandContext.cs
new file mode 100644
index 0000000..29a5a3f
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/Interfaces/CommandContext.cs
@@ -0,0 +1,14 @@
+using LibMatrix.Homeservers;
+using LibMatrix.Responses;
+using LibMatrix.RoomTypes;
+using LibMatrix.StateEventTypes.Spec;
+
+namespace MediaModeratorPoC.Bot.Interfaces;
+
+public class CommandContext {
+    public GenericRoom Room { get; set; }
+    public StateEventResponse MessageEvent { get; set; }
+    public string CommandName => (MessageEvent.TypedContent as RoomMessageEventData).Body.Split(' ')[0][1..];
+    public string[] Args => (MessageEvent.TypedContent as RoomMessageEventData).Body.Split(' ')[1..];
+    public AuthenticatedHomeserverGeneric Homeserver { get; set; }
+}
diff --git a/ExampleBots/MediaModeratorPoC/Bot/Interfaces/ICommand.cs b/ExampleBots/MediaModeratorPoC/Bot/Interfaces/ICommand.cs
new file mode 100644
index 0000000..a8fce94
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/Interfaces/ICommand.cs
@@ -0,0 +1,12 @@
+namespace MediaModeratorPoC.Bot.Interfaces; 
+
+public interface ICommand {
+    public string Name { get; }
+    public string Description { get; }
+
+    public Task<bool> CanInvoke(CommandContext ctx) {
+        return Task.FromResult(true);
+    }
+    
+    public Task Invoke(CommandContext ctx);
+}
\ No newline at end of file
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;
+    }
+}
diff --git a/ExampleBots/MediaModeratorPoC/Bot/MediaModBotConfiguration.cs b/ExampleBots/MediaModeratorPoC/Bot/MediaModBotConfiguration.cs
new file mode 100644
index 0000000..c441e2a
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/MediaModBotConfiguration.cs
@@ -0,0 +1,13 @@
+using Microsoft.Extensions.Configuration;
+
+namespace MediaModeratorPoC.Bot;
+
+public class MediaModBotConfiguration {
+    public MediaModBotConfiguration(IConfiguration config) {
+        config.GetRequiredSection("MediaMod").Bind(this);
+    }
+    public string Homeserver { get; set; } = "";
+    public string AccessToken { get; set; } = "";
+    public string Prefix { get; set; }
+    public List<string> Admins { get; set; } = new();
+}
diff --git a/ExampleBots/MediaModeratorPoC/Bot/StateEventTypes/MediaPolicyStateEventData.cs b/ExampleBots/MediaModeratorPoC/Bot/StateEventTypes/MediaPolicyStateEventData.cs
new file mode 100644
index 0000000..812ccf2
--- /dev/null
+++ b/ExampleBots/MediaModeratorPoC/Bot/StateEventTypes/MediaPolicyStateEventData.cs
@@ -0,0 +1,44 @@
+using System.Text.Json.Serialization;
+using LibMatrix.Helpers;
+using LibMatrix.Interfaces;
+
+namespace MediaModeratorPoC.Bot.StateEventTypes;
+
+
+[MatrixEvent(EventName = "gay.rory.media_moderator_poc.rule.media")]
+public class MediaPolicyStateEventData : IStateEventType {
+    /// <summary>
+    ///     Entity this ban applies to, can use * and ? as globs.
+    ///     This is an MXC URI.
+    /// </summary>
+    [JsonPropertyName("entity")]
+    public string Entity { get; set; }
+
+    /// <summary>
+    ///     Reason this user is banned
+    /// </summary>
+    [JsonPropertyName("reason")]
+    public string? Reason { get; set; }
+
+    /// <summary>
+    ///     Suggested action to take
+    /// </summary>
+    [JsonPropertyName("recommendation")]
+    public string? Recommendation { get; set; }
+
+    /// <summary>
+    ///     Expiry time in milliseconds since the unix epoch, or null if the ban has no expiry.
+    /// </summary>
+    [JsonPropertyName("support.feline.policy.expiry.rev.2")] //stable prefix: expiry, msc pending
+    public long? Expiry { get; set; }
+
+    //utils
+    /// <summary>
+    ///     Readable expiry time, provided for easy interaction
+    /// </summary>
+    [JsonPropertyName("gay.rory.matrix_room_utils.readable_expiry_time_utc")]
+    public DateTime? ExpiryDateTime {
+        get => Expiry == null ? null : DateTimeOffset.FromUnixTimeMilliseconds(Expiry.Value).DateTime;
+        set => Expiry = ((DateTimeOffset)value).ToUnixTimeMilliseconds();
+    }
+}