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...alink4NET.DSharpPlus.Nightly.ExampleBot/Lavalink4NET.DSharpPlus.Nightly.ExampleBot.csproj
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
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| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net8.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
| </PropertyGroup> | ||
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| <ItemGroup> | ||
| <PackageReference Include="DSharpPlus.Commands" Version="5.0.0-nightly-02355" /> | ||
| <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" /> | ||
| <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.0" /> | ||
| <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="8.0.0" /> | ||
| </ItemGroup> | ||
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| <ItemGroup> | ||
| <ProjectReference Include="..\..\src\Lavalink4NET.DSharpPlus.Nightly\Lavalink4NET.DSharpPlus.Nightly.csproj" /> | ||
| </ItemGroup> | ||
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| </Project> |
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samples/Lavalink4NET.DSharpPlus.Nightly.ExampleBot/MusicCommands.cs
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| namespace ExampleBot; | ||
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| using System; | ||
| using System.Threading.Tasks; | ||
| using DSharpPlus.Entities; | ||
| using DSharpPlus.Commands; | ||
| using Lavalink4NET; | ||
| using Lavalink4NET.Players; | ||
| using Lavalink4NET.Players.Queued; | ||
| using Lavalink4NET.Rest.Entities.Tracks; | ||
| using Microsoft.Extensions.Options; | ||
| using System.ComponentModel; | ||
| using DSharpPlus.Commands.ContextChecks; | ||
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| public class MusicCommands | ||
| { | ||
| private readonly IAudioService _audioService; | ||
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| public MusicCommands(IAudioService audioService) | ||
| { | ||
| ArgumentNullException.ThrowIfNull(audioService); | ||
| _audioService = audioService; | ||
| } | ||
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| [Command("play")] | ||
| [Description("Plays music")] | ||
| [DirectMessageUsage(DirectMessageUsage.DenyDMs)] | ||
| public async Task Play(CommandContext context, | ||
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| [Parameter("query")] | ||
| [Description("Track to play")] | ||
| string query) | ||
| { | ||
| // This operation could take a while - deferring the interaction lets Discord know we've | ||
| // received it and lets us update it later. Users see a "thinking..." state. | ||
| await context.DeferResponseAsync().ConfigureAwait(false); | ||
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| // Attempt to get the player | ||
| var player = await GetPlayerAsync(context, connectToVoiceChannel: true).ConfigureAwait(false); | ||
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| // If something went wrong getting the player, don't attempt to play any tracks | ||
| if (player is null) | ||
| return; | ||
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| // Fetch the tracks | ||
| var track = await _audioService.Tracks | ||
| .LoadTrackAsync(query, TrackSearchMode.YouTube) | ||
| .ConfigureAwait(false); | ||
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| // If no results were found | ||
| if (track is null) | ||
| { | ||
| var errorResponse = new DiscordFollowupMessageBuilder() | ||
| .WithContent("😖 No results.") | ||
| .AsEphemeral(); | ||
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| await context | ||
| .EditResponseAsync(errorResponse) | ||
| .ConfigureAwait(false); | ||
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| return; | ||
| } | ||
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| // Play the track | ||
| var position = await player | ||
| .PlayAsync(track) | ||
| .ConfigureAwait(false); | ||
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| // If it was added to the queue | ||
| if (position is 0) | ||
| { | ||
| await context | ||
| .FollowupAsync(new DiscordFollowupMessageBuilder().WithContent($"🔈 Playing: {track.Uri}")) | ||
| .ConfigureAwait(false); | ||
| } | ||
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| // If it was played directly | ||
| else | ||
| { | ||
| await context | ||
| .FollowupAsync(new DiscordFollowupMessageBuilder().WithContent($"🔈 Added to queue: {track.Uri}")) | ||
| .ConfigureAwait(false); | ||
| } | ||
| } | ||
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| private async ValueTask<QueuedLavalinkPlayer?> GetPlayerAsync(CommandContext commandContext, bool connectToVoiceChannel = true) | ||
| { | ||
| ArgumentNullException.ThrowIfNull(commandContext); | ||
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| var retrieveOptions = new PlayerRetrieveOptions( | ||
| ChannelBehavior: connectToVoiceChannel ? PlayerChannelBehavior.Join : PlayerChannelBehavior.None); | ||
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| var playerOptions = new QueuedLavalinkPlayerOptions { HistoryCapacity = 10000 }; | ||
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| var result = await _audioService.Players | ||
| .RetrieveAsync(commandContext.Guild!.Id, commandContext.Member?.VoiceState?.Channel?.Id ?? null, playerFactory: PlayerFactory.Queued, Options.Create(playerOptions), retrieveOptions) | ||
| .ConfigureAwait(false); | ||
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| if (!result.IsSuccess) | ||
| { | ||
| var errorMessage = result.Status switch | ||
| { | ||
| PlayerRetrieveStatus.UserNotInVoiceChannel => "You are not connected to a voice channel.", | ||
| PlayerRetrieveStatus.BotNotConnected => "The bot is currently not connected.", | ||
| _ => "Unknown error.", | ||
| }; | ||
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| var errorResponse = new DiscordFollowupMessageBuilder() | ||
| .WithContent(errorMessage) | ||
| .AsEphemeral(); | ||
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| await commandContext | ||
| .FollowupAsync(errorResponse) | ||
| .ConfigureAwait(false); | ||
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| return null; | ||
| } | ||
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| return result.Player; | ||
| } | ||
| } |
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samples/Lavalink4NET.DSharpPlus.Nightly.ExampleBot/Program.cs
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| using DSharpPlus; | ||
| using DSharpPlus.Commands; | ||
| using DSharpPlus.Extensions; | ||
| using ExampleBot; | ||
| using Lavalink4NET.Extensions; | ||
| using Microsoft.Extensions.DependencyInjection; | ||
| using Microsoft.Extensions.Hosting; | ||
| using Microsoft.Extensions.Logging; | ||
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| var builder = new HostApplicationBuilder(args); | ||
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| // Your host service | ||
| builder.Services.AddHostedService<ApplicationHost>(); | ||
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| // DSharpPlus | ||
| builder.Services.AddDiscordClient("Your token here", DiscordIntents.AllUnprivileged); | ||
| builder.Services.AddCommandsExtension(extension => extension.AddCommands(typeof(MusicCommands).Assembly)); | ||
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| // Lavalink4NET | ||
| builder.Services.AddLavalink(); | ||
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| // Logging | ||
| builder.Services.AddLogging(s => s.AddConsole().SetMinimumLevel(LogLevel.Debug)); | ||
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| // Start the host | ||
| builder.Build().Run(); | ||
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| file sealed class ApplicationHost : BackgroundService | ||
| { | ||
| private readonly DiscordClient _discordClient; | ||
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| public ApplicationHost(DiscordClient discordClient) | ||
| { | ||
| ArgumentNullException.ThrowIfNull(discordClient); | ||
| _discordClient = discordClient; | ||
| } | ||
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| protected override async Task ExecuteAsync(CancellationToken stoppingToken) | ||
| { | ||
| // Connect to discord gateway and initialize node connection | ||
| await _discordClient | ||
| .ConnectAsync() | ||
| .ConfigureAwait(false); | ||
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| await Task | ||
| .Delay(-1, stoppingToken) | ||
| .ConfigureAwait(false); | ||
| } | ||
| } |
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