using System.Linq;
using System.Reflection;
using System.IO;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Authorization;
using Microsoft.AspNetCore.Mvc.Formatters;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

using ASC.Api.Core;
using ASC.Common.Logging;
using ASC.Web.Api.Handlers;
using ASC.Api.Core.Middleware;

namespace ASC.Web.Api
{
    public class Startup
    {
        public IConfiguration Configuration { get; }

        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllers()
                .AddNewtonsoftJson(s=> s.UseCamelCasing(true))
                .AddXmlSerializerFormatters();

            services.AddHttpContextAccessor();

            services.AddAuthentication("cookie").AddScheme<AuthenticationSchemeOptions, CookieAuthHandler>("cookie", a=> { });

            var builder = services.AddMvc(config =>
            {
                var policy = new AuthorizationPolicyBuilder().RequireAuthenticatedUser().Build();
                config.Filters.Add(new TypeFilterAttribute(typeof(FormatFilter)));
                config.Filters.Add(new AuthorizeFilter(policy));
            });

            var assemblies = Directory.GetFiles(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "ASC*.dll")
                                .Select(Assembly.LoadFrom)
                                .Where(r => r.GetCustomAttribute<CustomApiAttribute>() != null);

            foreach (var a in assemblies)
            {
                builder.AddApplicationPart(a);
            }

            services.AddLogManager(Configuration);
        }

        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseCors(builder =>
                builder
                    .AllowAnyOrigin()
                    .AllowAnyHeader()
                    .AllowAnyMethod());

            app.UseRouting();

            app.UseResponseWrapper();

            app.UseAuthentication();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });
        }
    }
}