using System;
using System.Collections.Generic;
using System.Linq;
using OpenHarbor.CQRS.Abstractions.Discovery;

namespace OpenHarbor.CQRS.Discovery;

public sealed class CommandDiscovery : ICommandDiscovery
{
    private readonly IEnumerable<ICommandMeta> _commandMetas;

    public CommandDiscovery(IEnumerable<ICommandMeta> commandMetas)
    {
        _commandMetas = commandMetas;
    }

    public IEnumerable<ICommandMeta> GetCommands() => _commandMetas;
    public ICommandMeta FindCommand(string name) => _commandMetas.FirstOrDefault(t => t.Name == name);
    public ICommandMeta FindCommand(Type commandType) => _commandMetas.FirstOrDefault(t => t.CommandType == commandType);
    public bool CommandExists(string name) => _commandMetas.Any(t => t.Name == name);
    public bool CommandExists(Type commandType) => _commandMetas.Any(t => t.CommandType == commandType);
}