VoiceCommandContext.cs

using DSharpPlus;
using DSharpPlus.CommandsNext;
using DSharpPlus.Entities;
using DSharpPlus.Lavalink;

namespace YumeChan.DreamJockey;

public sealed class VoiceCommandContext
{
	public CommandContext Context { get; private init; }
	public DiscordChannel Channel { get; init; }
	public LavalinkExtension Lavalink { get; private init; }
	public LavalinkNodeConnection Node { get; protected init; }

	public VoiceCommandContext(CommandContext ctx, DiscordChannel? voiceChannel = null)
	{
		Context = ctx;
		Lavalink = ctx.Client.GetLavalink();
		Node ??= Lavalink.ConnectedNodes?.Values.First() ?? throw new ApplicationException("Lavalink is not connected.");
		Channel ??= voiceChannel ?? ctx.Member?.VoiceState?.Channel ?? throw new InvalidOperationException($"No Voice channel has been set for current {nameof(VoiceCommandContext)}.");

		if (Channel.Type is not ChannelType.Voice)
		{
			throw new InvalidOperationException("Designated channel is not a valid voice channel.");
		}
	}
	
	public LavalinkGuildConnection? GetGuildConnection() => Node.GetGuildConnection(Channel.Guild);
	
	public async Task<LavalinkGuildConnection> GetOrCreateGuildConnectionAsync() => Node.GetGuildConnection(Channel.Guild) ?? await Node.ConnectAsync(Channel);
}