using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using AspNetCore.Security.Jwt;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using Microsoft.IdentityModel.Tokens;
using MyCore.Models;
using MyCore.Services;
using Swashbuckle.AspNetCore.Swagger;
namespace MyCore
{
    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)
        {
            // Add the service (test purpose)
            services.AddScoped<BookService>();
            services.AddScoped<IoTDeviceService>();

            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

            // Register the Swagger generator, defining 1 or more Swagger documents
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new Info { Title = "MyCoreApi", Version = "v1" });

                // Set the comments path for the Swagger JSON and UI.
                var xmlFile = $"{Assembly.GetExecutingAssembly().GetName().Name}.xml";
                var xmlPath = Path.Combine(AppContext.BaseDirectory, xmlFile);
                c.IncludeXmlComments(xmlPath);

                c.AddSecurityDefinition("Bearer", new ApiKeyScheme { In = "header", Description = "Please enter JWT with Bearer into field", Name = "Authorization", Type = "apiKey" });
                c.AddSecurityRequirement(new Dictionary<string, IEnumerable<string>> {
                    { "Bearer", Enumerable.Empty<string>() },   
                });

            });

            services.AddAuthentication(options => {
                options.DefaultAuthenticateScheme = "JwtBearer";
                options.DefaultChallengeScheme = "JwtBearer";
            })

            .AddJwtBearer("JwtBearer", jwtBearerOptions =>
            {
                jwtBearerOptions.TokenValidationParameters = new TokenValidationParameters
                {
                    ValidateIssuerSigningKey = true,
                    IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("%G2YZ=\tgN7fC9M$FXDt#q*a&]Z")), // Put the secret in a file or something

                    ValidateIssuer = true,
                    ValidIssuer = "MyCore App",

                    ValidateAudience = true,
                    ValidAudience = "Miotecher",

                    ValidateLifetime = true, //validate the expiration and not before values in the token

                    ClockSkew = TimeSpan.FromMinutes(5) //5 minute tolerance for the expiration date
                };
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {

            app.UseCors(
                options => options.WithOrigins("http://localhost:4200").AllowAnyMethod().AllowAnyHeader()
            );

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

            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseHsts();
            }

            app.UseAuthentication();

            // Enable middleware to serve swagger-ui (HTML, JS, CSS, etc.), 
            // specifying the Swagger JSON endpoint.
            app.UseSwaggerUI(c =>
            {
                c.SwaggerEndpoint("/swagger/v1/swagger.json", "MyCoreApi V1");
            });

            //app.UseHttpsRedirection();
            app.UseMvc();
        }
    }
}