CommandServiceCollectionExtensions.cs

using Microsoft.Extensions.DependencyInjection;
using RustPlusBot.Features.Commands.Dispatching;
using RustPlusBot.Features.Commands.Handlers;
using RustPlusBot.Features.Commands.Hosting;
using RustPlusBot.Features.Commands.Localization;

namespace RustPlusBot.Features.Commands;

/// <summary>DI registration for the in-game command framework.</summary>
public static class CommandServiceCollectionExtensions
{
    /// <summary>Registers the dispatcher, cooldown, localizer, handlers, and hosted service.</summary>
    /// <param name="services">The service collection to add to.</param>
    /// <returns>The same service collection, for chaining.</returns>
    public static IServiceCollection AddCommands(this IServiceCollection services)
    {
        ArgumentNullException.ThrowIfNull(services);

        services.AddSingleton<CommandCooldown>();
        services.AddSingleton<BotUptime>();
        // CommandLocalizationCatalog has a required member, so register the prebuilt Default instance.
        services.AddSingleton(CommandLocalizationCatalog.Default);
        services.AddSingleton<ICommandLocalizer, CommandLocalizer>();

        services.AddScoped<ICommandHandler, MuteCommandHandler>();
        services.AddScoped<ICommandHandler, UnmuteCommandHandler>();
        services.AddScoped<ICommandHandler, UptimeCommandHandler>();
        services.AddScoped<ICommandHandler, PopCommandHandler>();
        services.AddScoped<ICommandHandler, WipeCommandHandler>();
        services.AddScoped<ICommandHandler, TimeCommandHandler>();

        services.AddScoped<CommandDispatcher>();
        services.AddHostedService<CommandsHostedService>();

        return services;
    }
}