using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Cors;
using Microsoft.AspNetCore.DataProtection;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.OpenApi.Models;
using Ocelot.DependencyInjection;
using Ocelot.Middleware;
using StackExchange.Redis;
using System;
using System.Linq;
using Volo.Abp;
using Volo.Abp.AspNetCore.Serilog;
using Volo.Abp.Autofac;
using Volo.Abp.EntityFrameworkCore;
using Volo.Abp.Localization;
using Volo.Abp.Modularity;

namespace WebAppGateway
{
    [DependsOn(
    typeof(AbpAutofacModule),
    typeof(AbpAspNetCoreSerilogModule)
    )]
    public class WebAppGatewayHostModule: AbpModule
    {
        private const string DefaultCorsPolicyName = "Default";

        public override void ConfigureServices(ServiceConfigurationContext context)
        {
            var configuration = context.Services.GetConfiguration();
            var hostingEnvironment = context.Services.GetHostingEnvironment();

            ConfigureAuthentication(context, configuration);
            //ConfigureSql();
            //ConfigureRedis(context, configuration, hostingEnvironment);
            ConfigureCors(context, configuration);
            //ConfigureSwaggerServices(context);
            ConfigureLocalization();
            context.Services.AddOcelot(context.Services.GetConfiguration());
        }

        public override void OnApplicationInitialization(ApplicationInitializationContext context)
        {
            var app = context.GetApplicationBuilder();

            app.UseCorrelationId();
            app.UseVirtualFiles();
            app.UseRouting();
            app.UseCors(DefaultCorsPolicyName);
            app.UseAuthentication();
            app.UseAbpClaimsMap();
            app.UseAuthorization();

            //app.UseSwagger();
            //app.UseSwaggerUI(options =>
            //{
            //    options.SwaggerEndpoint("/swagger/v1/swagger.json", "Business Service API");
            //});

            app.UseOcelot().Wait();
            app.UseAbpSerilogEnrichers();
        }

        private void ConfigureAuthentication(ServiceConfigurationContext context, IConfiguration configuration)
        {
            context.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
                .AddJwtBearer(options =>
                {
                    options.Authority = configuration["AuthServer:Authority"];
                    options.RequireHttpsMetadata = false;
                    options.Audience = "WebAppGateway";
                });
        }

        private static void ConfigureSwaggerServices(ServiceConfigurationContext context)
        {
            context.Services.AddSwaggerGen(
                options =>
                {
                    options.SwaggerDoc("v1", new OpenApiInfo { Title = "WebAppGateway Service API", Version = "v1" });
                    options.DocInclusionPredicate((docName, description) => true);
                });
        }

        private void ConfigureLocalization()
        {
            Configure<AbpLocalizationOptions>(options =>
            {
                options.Languages.Add(new LanguageInfo("cs", "cs", "Čeština"));
                options.Languages.Add(new LanguageInfo("en", "en", "English"));
                options.Languages.Add(new LanguageInfo("pt-BR", "pt-BR", "Português"));
                options.Languages.Add(new LanguageInfo("ru", "ru", "Русский"));
                options.Languages.Add(new LanguageInfo("tr", "tr", "Türkçe"));
                options.Languages.Add(new LanguageInfo("zh-Hans", "zh-Hans", "简体中文"));
                options.Languages.Add(new LanguageInfo("zh-Hant", "zh-Hant", "繁體中文"));
            });
        }

        private void ConfigureSql()
        {
            Configure<AbpDbContextOptions>(options =>
            {
                options.UseSqlServer();
            });
        }

        private void ConfigureRedis(
            ServiceConfigurationContext context,
            IConfiguration configuration,
            IWebHostEnvironment hostingEnvironment)
        {
            context.Services.AddStackExchangeRedisCache(options =>
            {
                options.Configuration = configuration["Redis:Configuration"];
            });

            if (!hostingEnvironment.IsDevelopment())
            {
                var redis = ConnectionMultiplexer.Connect(configuration["Redis:Configuration"]);
                context.Services
                    .AddDataProtection()
                    .PersistKeysToStackExchangeRedis(redis, "DataProtection-Keys");
            }
        }

        private void ConfigureCors(ServiceConfigurationContext context, IConfiguration configuration)
        {
            context.Services.AddCors(options =>
            {
                options.AddPolicy(DefaultCorsPolicyName, builder =>
                {
                    builder
                        .WithOrigins(
                            configuration["App:CorsOrigins"]
                                .Split(",", StringSplitOptions.RemoveEmptyEntries)
                                .Select(o => o.RemovePostFix("/"))
                                .ToArray()
                        )
                        .WithAbpExposedHeaders()
                        .SetIsOriginAllowedToAllowWildcardSubdomains()
                        .AllowAnyHeader()
                        .AllowAnyMethod()
                        .AllowCredentials();
                });
            });
        }
    }
}