using Gs.Toolbox.ApiCore.Abstract;
using Gs.Toolbox.ApiCore.Common.Mvc;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Mvc.ApplicationParts;
using Microsoft.Extensions.DependencyInjection;

namespace Gs.Toolbox.ApiCore.Extensions;

public static class ApplicationExtension
{
    public static void AddCustomController(this WebApplication app)
    {
        using (var serviceScope = app.Services.CreateScope())
        {
            var services = serviceScope.ServiceProvider;
            var applicationPartManager =
                services.GetRequiredService<ApplicationPartManager>();
            if (applicationPartManager == null)
                throw new Exception("未在容器中找到ApplicationPartManager");
            applicationPartManager.FeatureProviders.Add(
                new CustomControllerFeatureProvider());
        }
    }

    public static void AddModule<T>(this WebApplication app) where T : IModule
    {
        var list = new List<Type>();
        Rescuise(typeof(T), list);
        //去重，然后加载配置
        var tempList = new List<Type>();
        foreach (var t in list)
            if (!tempList.Contains(t))
                tempList.Add(t);

        using (var serviceScope = app.Services.CreateScope())
        {
            var services = serviceScope.ServiceProvider;
            var serviceCollection =
                services.GetRequiredService<IServiceCollection>();
            execModule(tempList, app, serviceCollection);
        }
    }

    private static void execModule(List<Type> tempList, WebApplication app,
        IServiceCollection serviceCollection)
    {
        foreach (var module in tempList)
        {
            var mod = (IModule)Activator.CreateInstance(module);
            mod.ConfigService(serviceCollection);
        }

        foreach (var module in tempList)
        {
            var mod = (IModule)Activator.CreateInstance(module);
            mod.ApplicationConfig(app);
        }
    }

    public static void Rescuise(Type type, List<Type> list)
    {
        var attr = type.GetCustomAttributes(false);
        if (attr.Length == 0)
        {
            list.Add(type);
            return;
        }

        foreach (var a in attr)
        {
            var temp = (CustomDependenceAttribute)a;
            Rescuise(temp.DependType, list);
        }

        list.Add(type);
    }
}