Added command routing
Added router class using attributes Added success parameter to mc computer response Added generic answer type class (for future choice results) Changelog: added
This commit is contained in:
Michael Chen
parent
bef9d16888
commit
ede4efa4e3
30
MinecraftDiscordBot/CommandRouter.cs
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30
MinecraftDiscordBot/CommandRouter.cs
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@ -0,0 +1,30 @@
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using Discord;
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using Discord.WebSocket;
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using System.Reflection;
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namespace MinecraftDiscordBot;
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public abstract class CommandRouter<T> : ICommandHandler<T> {
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private readonly Dictionary<string, HandleCommandDelegate<T>> _handlers = new();
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public CommandRouter() {
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foreach (var method in GetType().GetMethods())
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if (GetHandlerAttribute(method) is CommandHandlerAttribute handler)
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try {
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_handlers.Add(handler.CommandName, method.CreateDelegate<HandleCommandDelegate<T>>(this));
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} catch (Exception) {
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Program.LogWarning("CommandRouter", $"Could not add delegate for method {handler.CommandName} in function {method.ReturnType} {method.Name}(...)!");
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throw;
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}
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}
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private static CommandHandlerAttribute? GetHandlerAttribute(MethodInfo method)
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=> method.GetCustomAttributes(typeof(CommandHandlerAttribute), true).OfType<CommandHandlerAttribute>().FirstOrDefault();
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public abstract Task<T> RootAnswer(SocketUserMessage message, CancellationToken ct);
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public abstract Task<T> FallbackHandler(SocketUserMessage message, string method, string[] parameters, CancellationToken ct);
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public Task<T> HandleCommand(SocketUserMessage message, string[] parameters, CancellationToken ct)
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=> parameters is { Length: 0 }
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? RootAnswer(message, ct)
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: _handlers.TryGetValue(parameters[0], out var handler)
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? handler(message, parameters[1..], ct)
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: FallbackHandler(message, parameters[0], parameters[1..], ct);
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}
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@ -3,13 +3,23 @@ using Discord.WebSocket;
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using Fleck;
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using Newtonsoft.Json;
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using System.Diagnostics;
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using System.Runtime.Serialization;
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using System.Text;
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namespace MinecraftDiscordBot;
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public class ConnectedComputer {
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public delegate Task<TResponse> HandleCommandDelegate<TResponse>(SocketUserMessage message, string[] parameters, CancellationToken ct);
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public delegate Task HandleCommandDelegate(SocketUserMessage message, string[] parameters, CancellationToken ct);
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[AttributeUsage(AttributeTargets.Method, Inherited = true, AllowMultiple = false)]
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public sealed class CommandHandlerAttribute : Attribute {
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public CommandHandlerAttribute(string commandName) => CommandName = commandName;
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public string CommandName { get; }
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}
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public class ConnectedComputer : CommandRouter<ResponseType> {
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protected readonly IWebSocketConnection _socket;
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public ConnectedComputer(IWebSocketConnection socket) {
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public ConnectedComputer(IWebSocketConnection socket) : base() {
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socket.OnMessage = OnMessage;
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_socket = socket;
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}
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@ -23,6 +33,7 @@ public class ConnectedComputer {
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return;
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}
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}
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if (!msg.Success) waiter.SetUnsuccessful();
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waiter.AddChunk(msg.Chunk, msg.Total, msg.Result);
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if (waiter.Finished || waiter.IsCancellationRequested)
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lock (_syncRoot)
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@ -40,6 +51,7 @@ public class ConnectedComputer {
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int ID { get; }
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bool IsCancellationRequested { get; }
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void AddChunk(int chunkId, int totalChunks, string value);
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void SetUnsuccessful();
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}
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protected class ChunkWaiter<T> : IChunkWaiter {
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@ -57,6 +69,7 @@ public class ConnectedComputer {
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public bool IsCancellationRequested => _ct.IsCancellationRequested;
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private string?[]? _chunks = null;
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private int _receivedChunks = 0;
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private bool _success = true;
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private readonly object _syncRoot = new();
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public void AddChunk(int chunkId, int totalChunks, string value) {
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lock (_syncRoot) {
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@ -75,9 +88,12 @@ public class ConnectedComputer {
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if (++_receivedChunks == totalChunks) FinalizeResult(_chunks);
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}
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private void FinalizeResult(string?[] _chunks) {
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tcs.SetResult(resultParser(string.Concat(_chunks)));
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var resultString = string.Concat(_chunks);
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if (_success) tcs.SetResult(resultParser(resultString));
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else tcs.SetException(new ReplyException(resultString));
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Finished = true;
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}
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public void SetUnsuccessful() => _success = false;
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}
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protected int GetFreeId() {
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@ -101,9 +117,7 @@ public class ConnectedComputer {
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protected static Func<string, T> Deserialize<T>() => msg
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=> JsonConvert.DeserializeObject<T>(msg) ?? throw new InvalidProgramException("Empty response!");
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}
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public class RefinedStorageComputer : ConnectedComputer {
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public const string Role = "rs";
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private const string CmdEnergyUsage = "energyusage";
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private const string CmdEnergyStorage = "energystorage";
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@ -111,7 +125,6 @@ public class RefinedStorageComputer : ConnectedComputer {
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private const string CmdItemName = "itemname";
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private const string CmdListFluids = "listfluids";
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public RefinedStorageComputer(IWebSocketConnection socket) : base(socket) { }
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public async Task<int> GetEnergyUsageAsync(CancellationToken ct) {
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var waiter = GetWaiter(int.Parse, ct);
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await Send(new RequestMessage(waiter.ID, CmdEnergyUsage));
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@ -134,46 +147,21 @@ public class RefinedStorageComputer : ConnectedComputer {
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return await waiter.Task;
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}
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public async Task HandleCommand(SocketUserMessage message, string[] parameters, CancellationToken ct) {
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if (parameters is not { Length: > 0 }) {
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await message.ReplyAsync($"Refined Storage system is online");
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return;
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}
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try {
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switch (parameters[0].ToLower()) {
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case CmdEnergyUsage:
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await message.ReplyAsync($"Refined Storage system currently uses {await GetEnergyUsageAsync(ct)} RF/t");
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break;
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case CmdEnergyStorage:
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await message.ReplyAsync($"Refined Storage system stores {await GetEnergyStorageAsync(ct)} RF/t");
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break;
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case CmdListItems:
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await HandleItemListing(message, ct);
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break;
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case CmdItemName:
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await HandleItemName(message, parameters, ct);
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break;
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case CmdListFluids:
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await HandleFluidListing(message, ct);
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break;
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case string other:
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await message.ReplyAsync($"Refined Storages cannot do '{other}', bruh");
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break;
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}
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} catch (TaskCanceledException) {
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await message.ReplyAsync("The Refined Storage system request timed out!");
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}
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}
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private async Task HandleItemName(SocketUserMessage message, string[] parameters, CancellationToken ct) {
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if (parameters.Length < 2) await message.ReplyAsync($"Usage: {CmdItemName} filters...");
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[CommandHandler(CmdEnergyStorage)]
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public async Task<ResponseType> HandleEnergyStorage(SocketUserMessage message, string[] parameters, CancellationToken ct)
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=> ResponseType.AsString($"Refined Storage system stores {await GetEnergyStorageAsync(ct)} RF/t");
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[CommandHandler(CmdEnergyUsage)]
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public async Task<ResponseType> HandleEnergyUsage(SocketUserMessage message, string[] parameters, CancellationToken ct)
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=> ResponseType.AsString($"Refined Storage system currently uses {await GetEnergyUsageAsync(ct)} RF/t");
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[CommandHandler(CmdItemName)]
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public async Task<ResponseType> HandleItemName(SocketUserMessage message, string[] parameters, CancellationToken ct) {
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if (parameters.Length < 2) return ResponseType.AsString($"Usage: {CmdItemName} filters...");
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else {
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var items = await FilterItems(message, parameters[1..], ct);
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var sb = new StringBuilder();
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sb.AppendLine("Did you mean:");
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sb.AppendJoin("\n", items.Select(i => i.ToString()));
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await message.ReplyAsync(sb.ToString());
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return ResponseType.AsString(sb.ToString());
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}
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}
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@ -188,51 +176,22 @@ public class RefinedStorageComputer : ConnectedComputer {
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return items.ToList();
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}
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public abstract class ItemFilter {
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public abstract bool Match(Fluid item);
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public virtual bool MatchItem(Item item) => Match(item);
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public static ItemFilter Parse(string filter)
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=> filter.StartsWith('@')
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? new ModNameFilter(filter[1..])
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: filter.StartsWith('$')
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? new TagFilter(filter[1..])
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: new ItemNameFilter(filter);
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private class ModNameFilter : ItemFilter {
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private readonly string filter;
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public ModNameFilter(string filter) => this.filter = filter;
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public override bool Match(Fluid item) => item.ItemId.ModName.Contains(filter, StringComparison.InvariantCultureIgnoreCase);
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}
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private class TagFilter : ItemFilter {
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private readonly string filter;
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public TagFilter(string filter) => this.filter = filter;
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public override bool Match(Fluid item)
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=> item.Tags?.Any(tag => tag.Contains(filter, StringComparison.InvariantCultureIgnoreCase)) ?? false;
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}
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private class ItemNameFilter : ItemFilter {
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private readonly string filter;
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public ItemNameFilter(string filter) => this.filter = filter;
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public override bool Match(Fluid item) => item.DisplayName.Contains(filter, StringComparison.InvariantCultureIgnoreCase);
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}
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}
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private async Task HandleFluidListing(SocketUserMessage message, CancellationToken ct) {
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[CommandHandler(CmdListFluids)]
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public async Task<ResponseType> HandleFluidListing(SocketUserMessage message, string[] parameters, CancellationToken ct) {
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var sb = new StringBuilder();
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sb.Append("The Refined Storage system stores those fluids:");
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var fluids = await ListFluidsAsync(ct);
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foreach (var fluid in fluids.OrderByDescending(i => i.Amount))
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if (fluid.Amount > 10000) sb.AppendFormat("\n{0:n2} B of {1}", fluid.Amount / 1000.0f, fluid.DisplayName);
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else sb.AppendFormat("\n{0:n0} mB of {1}", fluid.Amount, fluid.DisplayName);
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await message.ReplyAsync(sb.ToString());
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return ResponseType.AsString(sb.ToString());
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}
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private List<Item>? Items;
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private readonly object _itemLock = new();
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private async Task HandleItemListing(SocketUserMessage message, CancellationToken ct) {
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[CommandHandler(CmdListItems)]
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public async Task<ResponseType> HandleItemListing(SocketUserMessage message, string[] parameters, CancellationToken ct) {
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var sb = new StringBuilder();
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sb.Append("The Refined Storage system currently stores these items:");
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var items = await RefreshItemList(ct);
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@ -245,7 +204,7 @@ public class RefinedStorageComputer : ConnectedComputer {
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}
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if (items.Count > taken) sb.AppendFormat("\nand {0} more items.", items.Skip(taken).Sum(i => i.Amount));
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}
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await message.ReplyAsync(sb.ToString());
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return ResponseType.AsString(sb.ToString());
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}
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private async Task<List<Item>> RefreshItemList(CancellationToken ct) {
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@ -255,6 +214,19 @@ public class RefinedStorageComputer : ConnectedComputer {
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return Items;
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}
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}
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public override Task<ResponseType> RootAnswer(SocketUserMessage message, CancellationToken ct)
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=> Task.FromResult(ResponseType.AsString("The Minecraft server is connected!"));
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public override Task<ResponseType> FallbackHandler(SocketUserMessage message, string method, string[] parameters, CancellationToken ct)
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=> Task.FromResult(ResponseType.AsString($"What the fuck do you mean by '{method}'?"));
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}
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[Serializable]
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public class ReplyException : Exception {
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public ReplyException() { }
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public ReplyException(string message) : base(message) { }
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public ReplyException(string message, Exception inner) : base(message, inner) { }
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protected ReplyException(SerializationInfo info, StreamingContext context) : base(info, context) { }
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}
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[JsonObject(MemberSerialization.OptIn, Description = "Describes an item in a Refined Storage system.", MissingMemberHandling = MissingMemberHandling.Ignore)]
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11
MinecraftDiscordBot/ICommandHandler.cs
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11
MinecraftDiscordBot/ICommandHandler.cs
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@ -0,0 +1,11 @@
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using Discord.WebSocket;
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namespace MinecraftDiscordBot;
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public interface ICommandHandler {
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Task HandleCommand(SocketUserMessage message, string[] parameters, CancellationToken ct);
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}
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public interface ICommandHandler<T> {
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Task<T> HandleCommand(SocketUserMessage message, string[] parameters, CancellationToken ct);
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}
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32
MinecraftDiscordBot/ItemFilter.cs
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32
MinecraftDiscordBot/ItemFilter.cs
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@ -0,0 +1,32 @@
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namespace MinecraftDiscordBot;
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public abstract class ItemFilter {
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public abstract bool Match(Fluid item);
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public virtual bool MatchItem(Item item) => Match(item);
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public static ItemFilter Parse(string filter)
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=> filter.StartsWith('@')
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? new ModNameFilter(filter[1..])
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: filter.StartsWith('$')
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? new TagFilter(filter[1..])
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: new ItemNameFilter(filter);
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private class ModNameFilter : ItemFilter {
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private readonly string filter;
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public ModNameFilter(string filter) => this.filter = filter;
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public override bool Match(Fluid item) => item.ItemId.ModName.Contains(filter, StringComparison.InvariantCultureIgnoreCase);
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}
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private class TagFilter : ItemFilter {
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private readonly string filter;
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public TagFilter(string filter) => this.filter = filter;
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public override bool Match(Fluid item)
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=> item.Tags?.Any(tag => tag.Contains(filter, StringComparison.InvariantCultureIgnoreCase)) ?? false;
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}
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private class ItemNameFilter : ItemFilter {
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private readonly string filter;
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public ItemNameFilter(string filter) => this.filter = filter;
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public override bool Match(Fluid item) => item.DisplayName.Contains(filter, StringComparison.InvariantCultureIgnoreCase);
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}
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}
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@ -11,7 +11,7 @@ public abstract class Message {
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public class CapabilityMessage : Message {
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public override string Type => "roles";
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[JsonProperty("role", Required = Required.Always)]
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public string Role { get; set; } = default!;
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public string[] Role { get; set; } = default!;
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}
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public class TextMessage : Message {
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@ -36,10 +36,15 @@ public class ReplyMessage : Message {
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public int AnswerId { get; set; }
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[JsonProperty("result", Required = Required.Always)]
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public string Result { get; set; }
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[JsonProperty("chunk", Required = Required.Always)]
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public int Chunk { get; set; }
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[JsonProperty("total", Required = Required.Always)]
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public int Total { get; set; }
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[JsonProperty("chunk", Required = Required.DisallowNull)]
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public int Chunk { get; set; } = 1;
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[JsonProperty("total", Required = Required.DisallowNull)]
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public int Total { get; set; } = 1;
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/// <summary>
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/// If at least one packet was received where
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/// </summary>
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[JsonProperty("success", Required = Required.DisallowNull)]
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public bool Success { get; set; } = true;
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public override string Type => "reply";
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}
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@ -21,6 +21,7 @@
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<PackageReference Include="Fleck" Version="1.2.0" />
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<PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.14.0" />
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<PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
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<PackageReference Include="OneOf" Version="3.0.205" />
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</ItemGroup>
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</Project>
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@ -1,17 +1,18 @@
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using CommandLine;
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using CommandLine;
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using Discord;
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using Discord.Commands;
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using Discord.Rest;
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using Discord.WebSocket;
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using Fleck;
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using Newtonsoft.Json;
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using OneOf;
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using System.Collections.Concurrent;
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using System.Reflection;
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using System.Runtime.CompilerServices;
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namespace MinecraftDiscordBot;
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public class Program : IDisposable {
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public class Program : IDisposable, ICommandHandler<ResponseType> {
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public const string WebSocketSource = "WebSocket";
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public const string BotSource = "Bot";
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private static readonly object LogLock = new();
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@ -25,13 +26,15 @@ public class Program : IDisposable {
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private readonly ConcurrentDictionary<Guid, ConnectedComputer> _connections = new();
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private static readonly char[] WhiteSpace = new char[] { '\t', '\n', ' ', '\r' };
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public ITextChannel[] _channels = Array.Empty<ITextChannel>();
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private RefinedStorageComputer? _rsSystem = null;
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private ConnectedComputer? _rsSystem = null;
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private bool disposedValue;
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public static bool OnlineNotifications => false;
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public RefinedStorageComputer? RsSystem {
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public ConnectedComputer? Computer {
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get => _rsSystem; set {
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if (_rsSystem != value) {
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_rsSystem = value;
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if (OnlineNotifications)
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_ = Task.Run(() => Broadcast(i => i.SendMessageAsync(value is null
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? $"The Refined Storage went offline. Please check the server!"
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: $"The Refined Storage is back online!")));
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@ -115,27 +118,13 @@ public class Program : IDisposable {
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}
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}
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private async Task SocketReceived(IWebSocketConnection socket, string message) {
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if (JsonConvert.DeserializeObject<CapabilityMessage>(message) is not CapabilityMessage capability) return;
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private static async Task SocketReceived(IWebSocketConnection socket, string message)
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=> await LogInfoAsync(WebSocketSource, $"[{socket.ConnectionInfo.Id}] Received: {message}");
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try {
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var pc = capability.Role switch {
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RefinedStorageComputer.Role => new RefinedStorageComputer(socket),
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string role => throw new ArgumentException($"Invalid role '{role}'!")
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};
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AddComputerSocket(socket, pc);
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await LogInfoAsync(WebSocketSource, $"[{socket.ConnectionInfo.Id}] Presented capability as {pc.GetType().Name}");
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} catch (ArgumentException e) {
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await LogErrorAsync(WebSocketSource, e);
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}
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}
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private void AddComputerSocket(IWebSocketConnection socket, ConnectedComputer pc) {
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if (pc is RefinedStorageComputer rs) RsSystem = rs;
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}
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private void AddComputerSocket(IWebSocketConnection socket, ConnectedComputer pc) => Computer = pc;
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private void RemoveComputerSocket(IWebSocketConnection socket) {
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if (RsSystem?.ConnectionInfo.Id == socket.ConnectionInfo.Id) RsSystem = null;
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if (Computer is { ConnectionInfo.Id: Guid id } && id == socket.ConnectionInfo.Id) Computer = null;
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}
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private async Task SocketClosed(IWebSocketConnection socket) {
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@ -143,8 +132,10 @@ public class Program : IDisposable {
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await LogInfoAsync(WebSocketSource, $"[{socket.ConnectionInfo.Id}] Client disconnected!");
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}
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private static async Task SocketOpened(IWebSocketConnection socket)
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=> await LogInfoAsync(WebSocketSource, $"[{socket.ConnectionInfo.Id}] Client connected from {socket.ConnectionInfo.ClientIpAddress}:{socket.ConnectionInfo.ClientPort}!");
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private async Task SocketOpened(IWebSocketConnection socket) {
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AddComputerSocket(socket, new(socket));
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await LogInfoAsync(WebSocketSource, $"[{socket.ConnectionInfo.Id}] Client connected from {socket.ConnectionInfo.ClientIpAddress}:{socket.ConnectionInfo.ClientPort}!");
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}
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|
||||
private async Task DiscordMessageReceived(SocketMessage arg, int timeout = 10000) {
|
||||
if (arg is not SocketUserMessage message) return;
|
||||
@ -155,7 +146,10 @@ public class Program : IDisposable {
|
||||
|
||||
if (IsCommand(message, out var argPos)) {
|
||||
var parameters = message.Content[argPos..].Split(WhiteSpace, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
|
||||
_ = Task.Run(() => HandleCommand(message, parameters, cts.Token));
|
||||
_ = Task.Run(async () => {
|
||||
var response = await HandleCommand(message, parameters, cts.Token);
|
||||
await SendResponse(message, response);
|
||||
});
|
||||
return;
|
||||
}
|
||||
|
||||
@ -163,18 +157,34 @@ public class Program : IDisposable {
|
||||
// TODO: Relay Message to Chat Receiver
|
||||
}
|
||||
|
||||
private Task HandleCommand(SocketUserMessage message, string[] parameters, CancellationToken ct)
|
||||
=> parameters is { Length: > 0 }
|
||||
? parameters[0].ToLower() switch {
|
||||
RefinedStorageComputer.Role => HandleRefinedStorageCommand(message, parameters[1..], ct),
|
||||
_ => message.ReplyAsync($"What the fuck do you mean by '{parameters[0]}'?")
|
||||
}
|
||||
: message.ReplyAsync($"You really think an empty command works?");
|
||||
private static Task SendResponse(SocketUserMessage message, ResponseType response) => response switch {
|
||||
ResponseType.IChoiceResponse res => HandleChoice(message, res),
|
||||
ResponseType.StringResponse res => message.ReplyAsync(res.Message),
|
||||
_ => message.ReplyAsync($"Whoops, someone forgot to implement '{response.GetType()}' responses?"),
|
||||
};
|
||||
|
||||
private Task HandleRefinedStorageCommand(SocketUserMessage message, string[] parameters, CancellationToken ct)
|
||||
=> RsSystem is RefinedStorageComputer rs
|
||||
? rs.HandleCommand(message, parameters, ct)
|
||||
: message.ReplyAsync("The Refined Storage system is currently unavailable!");
|
||||
private static async Task HandleChoice(SocketUserMessage message, ResponseType.IChoiceResponse res) {
|
||||
var reply = await message.ReplyAsync($"{res.Query}\n{string.Join("\n", res.Options)}");
|
||||
var reactions = new Emoji[] { new("0️⃣"), new("1️⃣"), new("2️⃣"), new("3️⃣"), new("4️⃣"), new("5️⃣"), new("6️⃣"), new("7️⃣"), new("8️⃣"), new("9️⃣") };
|
||||
await reply.AddReactionsAsync(reactions);
|
||||
}
|
||||
|
||||
public async Task<ResponseType> HandleCommand(SocketUserMessage message, string[] parameters, CancellationToken ct) {
|
||||
return ResponseType.FromChoice("Select an emoji:", new[] { "One", "Two", "Nine", "420" }, (choice) => message.ReplyAsync($"You chose: {choice}"));
|
||||
if (Computer is ICommandHandler<ResponseType> handler)
|
||||
try {
|
||||
return await handler.HandleCommand(message, parameters, ct);
|
||||
} catch (TaskCanceledException) {
|
||||
return ResponseType.AsString("Your request could not be processed in time!");
|
||||
} catch (ReplyException e) {
|
||||
await LogWarningAsync(BotSource, e.Message);
|
||||
return ResponseType.AsString($"Your request failed: {e.Message}");
|
||||
} catch (Exception e) {
|
||||
await LogErrorAsync(BotSource, e);
|
||||
return ResponseType.AsString($"Oopsie doopsie, this should not have happened!");
|
||||
}
|
||||
else return ResponseType.AsString("The Minecraft server is currently unavailable!");
|
||||
}
|
||||
|
||||
private bool IsCommand(SocketUserMessage message, out int argPos) {
|
||||
argPos = 0;
|
||||
@ -227,3 +237,32 @@ public class Program : IDisposable {
|
||||
GC.SuppressFinalize(this);
|
||||
}
|
||||
}
|
||||
|
||||
public abstract class ResponseType {
|
||||
private static string DefaultDisplay<T>(T obj) => obj?.ToString() ?? throw new InvalidProgramException("ToString did not yield anything!");
|
||||
public static ResponseType AsString(string message) => new StringResponse(message);
|
||||
public static ResponseType FromChoice<T>(string query, IEnumerable<T> choice, Func<T, Task> resultHandler, Func<T, string>? display = null) => new ChoiceResponse<T>(query, choice, resultHandler, display ?? DefaultDisplay);
|
||||
public class StringResponse : ResponseType {
|
||||
public StringResponse(string message) => Message = message;
|
||||
public string Message { get; }
|
||||
}
|
||||
public interface IChoiceResponse {
|
||||
IEnumerable<string> Options { get; }
|
||||
string Query { get; }
|
||||
Task HandleResult(int index);
|
||||
}
|
||||
public class ChoiceResponse<T> : ResponseType, IChoiceResponse {
|
||||
private readonly Func<T, Task> _resultHandler;
|
||||
private readonly T[] _options;
|
||||
private readonly Func<T, string> _displayer;
|
||||
public IEnumerable<string> Options => _options.Select(_displayer);
|
||||
public string Query { get; }
|
||||
public Task HandleResult(int index) => _resultHandler(_options[index]);
|
||||
public ChoiceResponse(string query, IEnumerable<T> choice, Func<T, Task> resultHandler, Func<T, string> display) {
|
||||
Query = query;
|
||||
_resultHandler = resultHandler;
|
||||
_options = choice.ToArray();
|
||||
_displayer = display;
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user