using Angular2Template.Models;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using System.IO;

namespace Angular2AppTemplate
{
    public class Startup
    {
        public Startup(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(env.ContentRootPath)
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
                .AddEnvironmentVariables();
            Configuration = builder.Build();
        }

        public IConfigurationRoot Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            // Add framework services.
            services.AddMvc();

            //Add Entity Framework services
            services.AddDbContext<AppDbContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DefaultDatabase")));

            // Register the Identity services.
            services.AddIdentity<ApplicationUser, IdentityRole>(o => {
                o.Password.RequireDigit = false;
                o.Password.RequireLowercase = false;
                o.Password.RequireUppercase = false;
                o.Password.RequireNonAlphanumeric = false; ;
                o.Password.RequiredLength = 3;
            })
                .AddEntityFrameworkStores<AppDbContext>()
                .AddDefaultTokenProviders();

            // Register the OpenIddict services, including the default Entity Framework stores.
            services.AddOpenIddict<ApplicationUser, AppDbContext>()
                // Enable the token endpoint (required to use the password flow).
                .EnableTokenEndpoint("/api/Account/Login")

                // Allow client applications to use the grant_type=password flow.
                .AllowPasswordFlow()

                // During development, you can disable the HTTPS requirement.
                .DisableHttpsRequirement()

                // Register a new ephemeral key, that is discarded when the application
                // shuts down. Tokens signed using this key are automatically invalidated.
                // This method should only be used during development.
                .AddEphemeralSigningKey();

            // Inject an implementation of ISwaggerProvider with defaulted settings applied
            services.AddSwaggerGen();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(Microsoft.AspNetCore.Builder.IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            //If ASP.net router doesn't recognize path, then we are assuming that Angular2 router will know something
            app.Use(async (context, next) =>
            {
                await next();

                if (context.Response.StatusCode == 404 && !Path.HasExtension(context.Request.Path.Value) && !context.Request.Path.Value.Contains("/api/"))
                {
                    context.Request.Path = "/index.html"; // Put your Angular root page here 
                    await next();
                }
            });

            loggerFactory.AddConsole(Configuration.GetSection("Logging"));
            loggerFactory.AddDebug();

            app.UseIdentity();

            app.UseOAuthValidation();

            app.UseOpenIddict();

            app.UseDefaultFiles();
            app.UseStaticFiles();

            app.UseMvc();

            // Enable middleware to serve generated Swagger as a JSON endpoint
            app.UseSwagger();

            // Enable middleware to serve swagger-ui assets (HTML, JS, CSS etc.)
            app.UseSwaggerUi();
        }
    }
}