/// <summary>Initializes a command service.</summary>
/// <param name="client">WOLF client. Required.</param>
/// <param name="options">Commands options that will be used as default when running a command. Required.</param>
/// <param name="services">Services provider that will be used by all commands. Null will cause a backup provider to be used.</param>
/// <param name="log">Logger to log messages and errors to. If null, all logging will be disabled.</param>
/// <param name="cancellationToken">Cancellation token that can be used for cancelling all tasks.</param>
public CommandsService(IWolfClient client, CommandsOptions options, ILogger log, IServiceProvider services = null, CancellationToken cancellationToken = default)
{
// init private
this._commands = new Dictionary <ICommandInstanceDescriptor, ICommandInstance>();
this._lock = new SemaphoreSlim(1, 1);
this._cts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
this._disposableServices = new List <IDisposable>(2);
this._started = false;
// init required
this._client = client ?? services?.GetService <IWolfClient>() ?? throw new ArgumentNullException(nameof(client));
this._options = options ?? services?.GetService <CommandsOptions>() ?? throw new ArgumentNullException(nameof(options));
// init optionals
this._log = log ?? services?.GetService <ILogger <CommandsService> >() ?? services?.GetService <ILogger <ICommandsService> >() ?? services.GetService <ILogger>();
this._argumentConverterProvider = services?.GetService <IArgumentConverterProvider>() ?? CreateAsDisposable <ArgumentConverterProvider>();
this._handlerProvider = services?.GetService <ICommandsHandlerProvider>() ?? CreateAsDisposable <CommandsHandlerProvider>();
this._argumentsParser = services?.GetService <IArgumentsParser>() ?? new ArgumentsParser();
this._parameterBuilder = services?.GetService <IParameterBuilder>() ?? new ParameterBuilder();
this._initializers = services?.GetService <ICommandInitializerProvider>() ?? new CommandInitializerProvider();
this._commandsLoader = services?.GetService <ICommandsLoader>() ?? new CommandsLoader(this._initializers, this._log);
// init service provider - use combine, to use fallback one as well
this._fallbackServices = this.CreateFallbackServiceProvider();
this._services = CombinedServiceProvider.Combine(services, this._fallbackServices);
// register event handlers
this._client.AddMessageListener <ChatMessage>(OnMessageReceived);
}
/// <summary>Creates a new loader instance.</summary>
/// <param name="initializers">Command initializers mapping.</param>
/// <param name="log">Logger to log messages and errors to. If null, all logging will be disabled.</param>
public CommandsLoader(ICommandInitializerProvider initializers, ILogger log)
{
this._initializers = initializers;
this._log = log;
}
/// <summary>Gets a command initializer for the command type.</summary> /// <typeparam name="T">Type of the command.</typeparam> /// <returns>An initializer for provided command type.</returns> public static ICommandInitializer GetMappedInitializer <T>(this ICommandInitializerProvider map) where T : CommandAttributeBase => map.GetInitializer(typeof(T));
