using System.Collections.Generic;
using System.Linq;
using System.Security.Claims;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.DataProtection;
using Microsoft.Extensions.DependencyInjection;
using Ocelot.DependencyInjection;
using Ocelot.Middleware;
using ProductManagement;
using StackExchange.Redis;
using Microsoft.OpenApi.Models;
using Swashbuckle.AspNetCore.Swagger;
using Volo.Abp;
using Volo.Abp.Autofac;
using Volo.Abp.EntityFrameworkCore;
using Volo.Abp.EntityFrameworkCore.SqlServer;
using Volo.Abp.Modularity;
using Volo.Abp.PermissionManagement.EntityFrameworkCore;
using Volo.Abp.Security.Claims;
using Volo.Abp.SettingManagement.EntityFrameworkCore;
using Volo.Blogging;

namespace PublicWebSiteGateway.Host
{
    [DependsOn(
        typeof(AbpAutofacModule),
        typeof(BloggingHttpApiModule),
        typeof(ProductManagementHttpApiModule),
        typeof(AbpEntityFrameworkCoreSqlServerModule),
        typeof(AbpPermissionManagementEntityFrameworkCoreModule),
        typeof(AbpSettingManagementEntityFrameworkCoreModule)
        )]
    public class PublicWebSiteGatewayHostModule : AbpModule
    {
        public override void ConfigureServices(ServiceConfigurationContext context)
        {
            var configuration = context.Services.GetConfiguration();

            context.Services.AddAuthentication("Bearer")
                .AddIdentityServerAuthentication(options =>
                {
                    options.Authority = configuration["AuthServer:Authority"];
                    options.ApiName = configuration["AuthServer:ApiName"];
                    options.RequireHttpsMetadata = false;
                });

            context.Services.AddSwaggerGen(options =>
            {
                options.SwaggerDoc("v1", new OpenApiInfo { Title = "PublicWebSite Gateway API", Version = "v1" });
                options.DocInclusionPredicate((docName, description) => true);
                options.CustomSchemaIds(type => type.FullName);
            });

            context.Services.AddOcelot(context.Services.GetConfiguration());

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

            context.Services.AddStackExchangeRedisCache(options =>
            {
                options.Configuration = configuration["Redis:Configuration"];
            });

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

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

            app.UseCorrelationId();
            app.UseVirtualFiles();
            app.UseRouting();
            app.UseAuthentication();

            app.Use(async (ctx, next) =>
            {
                var currentPrincipalAccessor = ctx.RequestServices.GetRequiredService<ICurrentPrincipalAccessor>();
                var map = new Dictionary<string, string>()
                {
                    { "sub", AbpClaimTypes.UserId },
                    { "role", AbpClaimTypes.Role },
                    { "email", AbpClaimTypes.Email },
                    //any other map
                };
                var mapClaims = currentPrincipalAccessor.Principal.Claims.Where(p => map.Keys.Contains(p.Type)).ToList();
                currentPrincipalAccessor.Principal.AddIdentity(new ClaimsIdentity(mapClaims.Select(p => new Claim(map[p.Type], p.Value, p.ValueType, p.Issuer))));
                await next();
            });

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

            app.MapWhen(
                ctx => ctx.Request.Path.ToString().StartsWith("/api/abp/") ||
                       ctx.Request.Path.ToString().StartsWith("/Abp/"),
                app2 =>
                {
                    app2.UseRouting();
                    app2.UseMvcWithDefaultRouteAndArea();
                }
            );

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