using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.IdentityModel.Tokens;
using skydiveLogs_api.DomainBusiness.Interfaces;
using skydiveLogs_api.Ioc;
using skydiveLogs_api.Settings;
using System.IO;
using System.Linq;
using System.Text;

namespace skydiveLogs_api
{
    public class Startup
    {
        #region Public Constructors

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

        #endregion Public Constructors

        #region Public Methods

        // 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.EnvironmentName == "Development")
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }

            app.UseCors();
            app.UseAuthentication();

            app.UseMvc();
        }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc(options => { options.EnableEndpointRouting = false; });
            services.AddHttpContextAccessor();

            // JWT
            var jwtSection = Configuration.GetSection("JWT");
            services.Configure<JwtSettings>(jwtSection);

            var jwtSettings = new JwtSettings();
            jwtSection.Bind(jwtSettings);

            services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
                    .AddJwtBearer(options =>
                    {
                        options.SaveToken = true;
                        options.TokenValidationParameters = new TokenValidationParameters()
                        {
                            ValidateIssuer = true,
                            ValidateAudience = true,
                            ValidateLifetime = true,
                            ValidateIssuerSigningKey = true,
                            ValidIssuer = jwtSettings.Issuer,
                            ValidAudience = jwtSettings.Issuer,
                            IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(jwtSettings.Passphrase))
                        };
                    });

            // CORS
            var corsSettings = new CorsSettings();
            Configuration.GetSection("Cors").Bind(corsSettings);

            services.AddCors(options =>
            {
                options.AddDefaultPolicy(
                builder =>
                {
                    builder.WithOrigins(corsSettings.FrontUrl)
                           .AllowAnyHeader()
                           .AllowAnyMethod();
                });
            });

            // IoC
            var iocService = new IocService(services, Configuration);
            iocService.Configure();

            // AutoMapper
            services.AddAutoMapper(typeof(Mapper.ModelProfile));

            CheckAndInitDb(services);
        }

        #endregion Public Methods

        #region Private Methods

        private void CheckAndInitDb(IServiceCollection services)
        {
            string connectionString = Configuration.GetConnectionString("DefaultConnection");
            var dictionary = connectionString.Split(';')
                                             .Select(part => part.Split('='))
                                             .Where(part => part.Length == 2)
                                             .ToDictionary(sp => sp[0], sp => sp[1]);

            string dbFile = dictionary["Filename"]; //connectionString.Replace("Filename=", string.Empty);


            var serviceProvider = services.BuildServiceProvider();
            var initDbService = serviceProvider.GetRequiredService<IInitDbService>();

            if (!File.Exists(dbFile))
                initDbService.GenerateDb();
            else
                initDbService.Update();
        }

        #endregion Private Methods

        #region Public Properties

        public IConfiguration Configuration { get; }

        #endregion Public Properties
    }
}