using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using CSGO.Data;
using CSGO.Models;
using CSGO.Services;

namespace CSGO {
    public class Startup {
        public Startup(IConfiguration configuration) {
            Configuration = configuration;
        }

        private async Task CreateRoles(IServiceProvider serviceProvider) {
            var RoleManager = serviceProvider.GetRequiredService<RoleManager<IdentityRole>>();
            var UserManager = serviceProvider.GetRequiredService<UserManager<ApplicationUser>>();
            string[] roleNames = { "Administrator", "User" };
            IdentityResult roleResult;

            foreach (var roleName in roleNames) {
                var roleExist = await RoleManager.RoleExistsAsync(roleName);
                if (!roleExist) {
                    roleResult = await RoleManager.CreateAsync(new IdentityRole(roleName));
                }
            }

            var admin = new ApplicationUser { UserName = "admin@admin.com", Email = "admin@admin.com" };
            string password = "@dministrat0R";
            var _user = await UserManager.FindByEmailAsync("admin@admin.com");

            if (_user == null) {
                var createPowerUser = await UserManager.CreateAsync(admin, password);
                if (createPowerUser.Succeeded) {
                    await UserManager.AddToRoleAsync(admin, "Administrator");
                }
            }
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services) {
            services.AddDbContext<ApplicationDbContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

            services.AddIdentity<ApplicationUser, IdentityRole>()
                .AddEntityFrameworkStores<ApplicationDbContext>()
                .AddDefaultTokenProviders();

            // Add application services.
            services.AddTransient<IEmailSender, EmailSender>();

            services.AddMvc();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, IServiceProvider serviceProvider) {
            if (env.IsDevelopment()) {
                app.UseDeveloperExceptionPage();
                app.UseBrowserLink();
                app.UseDatabaseErrorPage();
            } else {
                app.UseExceptionHandler("/Home/Error");
            }

            app.UseStaticFiles();

            app.UseAuthentication();

            app.UseMvc(routes => {
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{action=Index}/{id?}");
            });
            CreateRoles(serviceProvider).Wait();
        }
    }
}