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path: root/Utilities/LibMatrix.DevTestBot/Bot/DevTestBot.cs
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using System.Diagnostics.CodeAnalysis;
using ArcaneLibs.Extensions;
using LibMatrix.EventTypes.Spec;
using LibMatrix.EventTypes.Spec.State;
using LibMatrix.ExampleBot.Bot.Interfaces;
using LibMatrix.Helpers;
using LibMatrix.Homeservers;
using LibMatrix.Services;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;

namespace LibMatrix.ExampleBot.Bot;

public class DevTestBot : IHostedService {
    private readonly HomeserverProviderService _homeserverProviderService;
    private readonly ILogger<DevTestBot> _logger;
    private readonly DevTestBotConfiguration _configuration;
    private readonly IEnumerable<ICommand> _commands;

    public DevTestBot(HomeserverProviderService homeserverProviderService, ILogger<DevTestBot> logger,
        DevTestBotConfiguration configuration, IServiceProvider services) {
        logger.LogInformation("{} instantiated!", this.GetType().Name);
        _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;
        }

        var msg = new MessageBuilder().WithRainbowString("Meanwhile, I'm sitting here, still struggling with trying to rainbow. ^^'").Build();
        var res = await hs.ResolveRoomAliasAsync("#watercooler:maunium.net");

        var syncHelper = new SyncHelper(hs);

        await (hs.GetRoom("!DoHEdFablOLjddKWIp:rory.gay")).JoinAsync();

        // foreach (var room in await hs.GetJoinedRooms()) {
        //     if(room.RoomId is "!OGEhHVWSdvArJzumhm:matrix.org") continue;
        //     foreach (var stateEvent in await room.GetStateAsync<List<StateEvent>>("")) {
        //         var _ = stateEvent.GetType;
        //     }
        //     _logger.LogInformation($"Got room state for {room.RoomId}!");
        // }

        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 {args.Key} by {inviteEvent.Sender} with reason: {(inviteEvent.TypedContent as RoomMemberEventContent).Reason}");
            if (inviteEvent.Sender.EndsWith(":rory.gay") || inviteEvent.Sender == "@mxidupwitch:the-apothecary.club") {
                try {
                    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 (hs.GetRoom(args.Key)).LeaveAsync(reason: "I was unable to join the room: " + e);
                }
            }
        });
        syncHelper.TimelineEventHandlers.Add(async @event => {
            _logger.LogInformation(
                "Got timeline event in {}: {}", @event.RoomId, @event.ToJson(indent: false, ignoreNull: true));

            var room = hs.GetRoom(@event.RoomId);
            // _logger.LogInformation(eventResponse.ToJson(indent: false));
            if (@event is { Type: "m.room.message", TypedContent: RoomMessageEventContent 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(
                            new RoomMessageEventContent(messageType: "m.text", body: "Command not found!"));
                        return;
                    }

                    var ctx = new CommandContext {
                        Room = room,
                        MessageEvent = @event
                    };
                    if (await command.CanInvoke(ctx)) {
                        await command.Invoke(ctx);
                    }
                    else {
                        await room.SendMessageEventAsync(
                            new RoomMessageEventContent(messageType: "m.text", body: "You do not have permission to run this command!"));
                    }
                }
            }
        });
        await syncHelper.RunSyncLoopAsync(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;
    }
}