using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Identity.UI.Services;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Microsoft.Extensions.Hosting;
using Microsoft.IdentityModel.Tokens;
using Microsoft.OpenApi.Models;

using Newtonsoft.Json;

using PhotoContest.Data;
using PhotoContest.Data.Models;
using PhotoContest.Services.Contracts;
using PhotoContest.Services.Contracts.SecurityContracts;
using PhotoContest.Services.Models.SecurityModels;
using PhotoContest.Services.Services;
using PhotoContest.Services.Services.BackgroundTask;
using PhotoContest.Services.Services.SecurityService;

using System;
using System.IO;
using System.Reflection;
using System.Text;

namespace PhotoContest.Web
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        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.AddControllersWithViews()
                    .AddNewtonsoftJson(options =>
                    {
                        options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
                    });

            services.AddRazorPages();

            services.Configure<JWT>(Configuration.GetSection("JWT"));

            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("PhotoContest", new OpenApiInfo { Title = "PhotoContest" });

                var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
                var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
                c.IncludeXmlComments(xmlPath);

                var securitySchema = new OpenApiSecurityScheme
                {
                    Description = "JWT Authorization header using the Bearer scheme. Example: \"Authorization: Bearer {token}\"",
                    Name = "Authorization",
                    In = ParameterLocation.Header,
                    Type = SecuritySchemeType.Http,
                    Scheme = "bearer",
                    Reference = new OpenApiReference
                    {
                        Type = ReferenceType.SecurityScheme,
                        Id = "Bearer"
                    }
                };
                c.AddSecurityDefinition("Bearer", securitySchema);

                var securityRequirement = new OpenApiSecurityRequirement
                {
                    { securitySchema, new[] { "Bearer" } }
                };

                c.AddSecurityRequirement(securityRequirement);
            });

            services.AddDbContext<PhotoContestContext>(options =>
            {
                options.UseSqlServer(this.Configuration.GetConnectionString("DefaultConnection"));
            });

            services
                .AddDefaultIdentity<User>
                    (options =>
                    {
                        options.SignIn.RequireConfirmedAccount = false;
                        options.Password.RequireNonAlphanumeric = false;
                        options.Password.RequireUppercase = false;
                        options.Password.RequiredLength = 8;
                        options.Password.RequireLowercase = false;
                    })
                .AddRoles<Role>()
                .AddEntityFrameworkStores<PhotoContestContext>();

            //
            // services
            //  .AddIdentity<User, Role>(options =>
            //  {
            //      options.SignIn.RequireConfirmedAccount = false;
            //      options.Password.RequireNonAlphanumeric = false;
            //      options.Password.RequireUppercase = false;
            //      options.Password.RequiredLength = 8;
            //      options.Password.RequireLowercase = false;
            //  })
            //  .AddEntityFrameworkStores<PhotoContestContext>()
            //  .AddDefaultTokenProviders();
            //

            services.AddScoped<ICategoryService, CategoryService>();
            services.AddScoped<IPhotoService, PhotoService>();
            services.AddScoped<IUserService, UserService>();
            services.AddScoped<ITokenService, TokenService>();
            services.AddScoped<IReviewService, ReviewService>();
            services.AddScoped<IContestService, ContestService>();
            services.AddScoped<IUserContestService, UserContestService>();
            services.AddSingleton<IEmailSender, EmailSender>();

            services.AddHostedService<TimedHostedService>();
            services.AddAutoMapper(typeof(Startup));

            //
            // services.TryAddScoped<SignInManager<User>>();
            //


            // ----------------------------------------------------------------------------------------------
            //services
            //  .AddAuthentication(options =>
            //  {
            //      options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
            //      options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
            //  })
            //  .AddJwtBearer(options =>
            //  {
            //      //options.RequireHttpsMetadata = false;
            //      //options.SaveToken = false;
            //      options.TokenValidationParameters = new TokenValidationParameters
            //      {
            //          ValidateIssuerSigningKey = true,
            //          ValidateIssuer = true,
            //          ValidateAudience = true,
            //          ValidateLifetime = true,
            //          ClockSkew = TimeSpan.Zero,
            //          ValidIssuer = Configuration["JWT:Issuer"],
            //          ValidAudience = Configuration["JWT:Audience"],
            //          IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(Configuration["JWT:Key"]))
            //      };
            //  });
            // -------------------------------------------------------------------------------------------------



        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwaggerUI(c =>
                {
                    c.SwaggerEndpoint("/swagger/PhotoContest/swagger.json", "PhotoContest");
                });
                app.UseSwagger();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
            }
            app.UseStaticFiles();

            app.UseRouting();
            app.UseAuthentication();
            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller=Home}/{action=Index}/{id?}");
                endpoints.MapRazorPages();
            });
        }
    }
}