using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using System.Threading;
using System.Threading.Tasks;

namespace Kruzya.TelegramBot.Core;

public abstract class Module
{
    protected readonly Core Core;
    protected IConfiguration Configuration => Core.Configuration;
        
    public Module(Core core)
    {
        Core = core;
    }

    public virtual void ConfigureServices(IServiceCollection services)
    {
    }

    public virtual void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
    }

    public virtual Task StartAsync(CancellationToken cts, IServiceScope scope) => Task.CompletedTask;
    public virtual Task StopAsync(CancellationToken cts, IServiceScope scope) => Task.CompletedTask;

    /// <summary>
    /// Ensures if module is loaded and started. Note that call can change module event chain.
    /// </summary>
    /// <typeparam name="T">The Module type.</typeparam>
    /// <returns>Module instance.</returns>
    protected T EnsureLoaded<T>() where T : Module
    {
        return (T) Core.EnsureLoaded(typeof(T));
    }
}