using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net.Http;
using System.Reflection;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Cors;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.ApiExplorer;
using Microsoft.AspNetCore.Mvc.Formatters;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Win_in.Sfs.Scp.WebApi.EntityFrameworkCore;
using Win_in.Sfs.Scp.WebApi.MultiTenancy;
using Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic;
using Microsoft.OpenApi.Models;
using Serilog;
using Swashbuckle.AspNetCore.SwaggerGen;
using Volo.Abp;
using Volo.Abp.Account;
using Volo.Abp.Account.Web;
using Volo.Abp.AspNetCore.Authentication.JwtBearer;
using Volo.Abp.AspNetCore.MultiTenancy;
using Volo.Abp.AspNetCore.Mvc;
using Volo.Abp.AspNetCore.Mvc.UI.Bundling;
using Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic.Bundling;
using Volo.Abp.AspNetCore.Mvc.UI.Theme.Shared;
using Volo.Abp.AspNetCore.Serilog;
using Volo.Abp.Autofac;
using Volo.Abp.Localization;
using Volo.Abp.Modularity;
using Volo.Abp.Swashbuckle;
using Volo.Abp.UI.Navigation.Urls;
using Volo.Abp.VirtualFileSystem;
using Win_in.Sfs.Scp.v1.EntityFrameworkCore;

namespace Win_in.Sfs.Scp.WebApi
{
    [DependsOn(
        typeof(WebApiHttpApiModule),
        typeof(AbpAutofacModule),
        typeof(AbpAspNetCoreMultiTenancyModule),
        typeof(WebApiApplicationModule),
        typeof(WebApiEntityFrameworkCoreModule),
        typeof(AbpAspNetCoreMvcUiBasicThemeModule),
        typeof(AbpAspNetCoreAuthenticationJwtBearerModule),
        typeof(AbpAccountWebIdentityServerModule),
        typeof(AbpAspNetCoreSerilogModule), 
        typeof(AbpSwashbuckleModule)
    )]
    [DependsOn(
        typeof(V1ScpEntityFrameworkCoreModule))]
    public class WebApiHttpApiHostModule : AbpModule
    {
        public override void ConfigureServices(ServiceConfigurationContext context)
        {
            var configuration = context.Services.GetConfiguration();
            var hostingEnvironment = context.Services.GetHostingEnvironment();

          

            ConfigureBundles();
            ConfigureUrls(configuration);
            ConfigureConventionalControllers();
            ConfigureAuthentication(context, configuration);
            ConfigureLocalization();
            ConfigureVirtualFileSystem(context);
            ConfigureCors(context, configuration);
            ConfigureSwaggerServices(context, configuration);

            ConfigureAuthorization(context,configuration);
        }

        private static void ConfigureAuthorization(ServiceConfigurationContext context, IConfiguration configuration)
        {
            var alwaysAllowAuthorization = Convert.ToBoolean(configuration["AlwaysAllowAuthorization"]);
            if (alwaysAllowAuthorization)
            {
                //绕过授权服务
                context.Services.AddAlwaysAllowAuthorization();
            }
        }

        private void ConfigureBundles()
        {
            Configure<AbpBundlingOptions>(options =>
            {
                options.StyleBundles.Configure(
                    BasicThemeBundles.Styles.Global,
                    bundle => { bundle.AddFiles("/global-styles.css"); }
                );
            });
        }

        private void ConfigureUrls(IConfiguration configuration)
        {
            Configure<AppUrlOptions>(options =>
            {
                options.Applications["MVC"].RootUrl = configuration["App:SelfUrl"];
                options.RedirectAllowedUrls.AddRange(configuration["App:RedirectAllowedUrls"].Split(','));

                options.Applications["Angular"].RootUrl = configuration["App:ClientUrl"];
                options.Applications["Angular"].Urls[AccountUrlNames.PasswordReset] = "account/reset-password";
            });
        }

        private void ConfigureVirtualFileSystem(ServiceConfigurationContext context)
        {
            var hostingEnvironment = context.Services.GetHostingEnvironment();

            if (hostingEnvironment.IsDevelopment())
            {
                Configure<AbpVirtualFileSystemOptions>(options =>
                {
                    options.FileSets.ReplaceEmbeddedByPhysical<WebApiDomainSharedModule>(
                        Path.Combine(hostingEnvironment.ContentRootPath,
                            $"..{Path.DirectorySeparatorChar}Win_in.Sfs.Scp.WebApi.Domain.Shared"));
                    options.FileSets.ReplaceEmbeddedByPhysical<WebApiDomainModule>(
                        Path.Combine(hostingEnvironment.ContentRootPath,
                            $"..{Path.DirectorySeparatorChar}Win_in.Sfs.Scp.WebApi.Domain"));
                    options.FileSets.ReplaceEmbeddedByPhysical<WebApiApplicationContractsModule>(
                        Path.Combine(hostingEnvironment.ContentRootPath,
                            $"..{Path.DirectorySeparatorChar}Win_in.Sfs.Scp.WebApi.Application.Contracts"));
                    options.FileSets.ReplaceEmbeddedByPhysical<WebApiApplicationModule>(
                        Path.Combine(hostingEnvironment.ContentRootPath,
                            $"..{Path.DirectorySeparatorChar}Win_in.Sfs.Scp.WebApi.Application"));
                });
            }
        }

        private void ConfigureConventionalControllers()
        {
            Configure<AbpAspNetCoreMvcOptions>(options =>
            {
                options.ConventionalControllers.Create(typeof(WebApiApplicationModule).Assembly);
            });
        }

        private void ConfigureAuthentication(ServiceConfigurationContext context, IConfiguration configuration)
        {
            context.Services.AddAuthentication()
                .AddJwtBearer(options =>
                {
                    options.Authority = configuration["AuthServer:Authority"];
                    options.RequireHttpsMetadata = Convert.ToBoolean(configuration["AuthServer:RequireHttpsMetadata"]);
                    options.Audience = "WebApi";
                    options.BackchannelHttpHandler = new HttpClientHandler
                    {
                        ServerCertificateCustomValidationCallback =
                            HttpClientHandler.DangerousAcceptAnyServerCertificateValidator
                    };
                });
        }

        private void ConfigureSwaggerServices(ServiceConfigurationContext context, IConfiguration configuration)
        {
            // context.Services.AddAbpSwaggerGenWithOAuth(
            //     configuration["AuthServer:Authority"],
            //     new Dictionary<string, string>
            //     {
            //         {"WebApi", "WebApi API"}
            //     },
            //     options =>
            //     {
            //         options.SwaggerDoc("v1", new OpenApiInfo {Title = "WebApi API", Version = "v1"});
            //         options.DocInclusionPredicate((docName, description) => true);
            //         options.CustomSchemaIds(type => type.FullName);
            //     });

            context.Services.AddAbpSwaggerGenWithOAuth(
                configuration["AuthServer:Authority"],
                new Dictionary<string, string>
                {
                    { "WebApi", "WebApi API" }
                },
                options =>
                {
                    //遍历Swagger分组，注册SwaggerDoc
                    foreach (var groupName in typeof(SwaggerGroupConsts).GetFields()
                                 .Select(f => f.GetValue(null).ToString()))
                    {
                        options.SwaggerDoc(groupName,
                            new OpenApiInfo { Title = $"{groupName} API", Version = groupName });
                    }

                    //根据APIExplorerSetting判断是否包含于Swagger文档当前分组
                    options.DocInclusionPredicate(IsIncludeInDoc);

                    //反射注入全部Application和Application.Contract程序集说明
                    GetXmlFiles().ForEach(file =>
                    {
                        options.IncludeXmlComments(file);
                        Log.Information(" TEST-SWAGGER PATH ==> " + file);
                    });

                    options.DocumentFilter<HiddenApiFilter>();
                    options.CustomSchemaIds(type => type.FullName);
                });
        }

        /// <summary>
        /// 判断是否应该加入当前分组
        /// </summary>
        /// <param name="docName"></param>
        /// <param name="apiDesc"></param>
        /// <returns></returns>
        private bool IsIncludeInDoc(string docName, ApiDescription apiDesc)
        {
            if (!apiDesc.TryGetMethodInfo(out MethodInfo methodInfo))
            {
                return false;
            }

            var groups = methodInfo.ReflectedType.GetCustomAttributes(true)
                .OfType<ApiExplorerSettingsAttribute>()
                .Select(attr => attr.GroupName)
                .ToList();

            if (docName == SwaggerGroupConsts.Default)
            {
                if (groups.Count == 0)
                {
                    return true;
                }

                return apiDesc.GroupName == SwaggerGroupConsts.Default;
            }

            return docName == apiDesc.GroupName;
        }

        /// <summary>
        /// 获取当前目录下的xml文档
        /// </summary>
        /// <returns></returns>
        private List<string> GetXmlFiles()
        {
            var basePath = Path.GetDirectoryName(typeof(Program).Assembly.Location);
            Log.Information(" TEST- base Path PATH ==> " + basePath);
            //Console.WriteLine(" TEST- base Path PATH ==> " + basePath);
            var files1 = Directory.GetFiles(basePath, "*.Application*.xml");
            return files1.ToList();
        }


        private void ConfigureLocalization()
        {
            Configure<AbpLocalizationOptions>(options =>
            {
                options.Languages.Add(new LanguageInfo("en", "en", "English"));
                options.Languages.Add(new LanguageInfo("zh-Hans", "zh-Hans", "简体中文"));
            });
        }

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

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

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

            app.UseAbpRequestLocalization();

            if (!env.IsDevelopment())
            {
                app.UseErrorPage();
            }

            app.UseCorrelationId();
            app.UseStaticFiles();
            app.UseRouting();
            app.UseCors();
            app.UseAuthentication();
            app.UseJwtTokenMiddleware();

            if (MultiTenancyConsts.IsEnabled)
            {
                app.UseMultiTenancy();
            }

            app.UseUnitOfWork();
            app.UseIdentityServer();
            app.UseAuthorization();

            app.UseSwagger();
            app.UseAbpSwaggerUI(options =>
            {
                // c.SwaggerEndpoint("/swagger/v1/swagger.json", "WebApi API");
                //
                // var configuration = context.ServiceProvider.GetRequiredService<IConfiguration>();
                // c.OAuthClientId(configuration["AuthServer:SwaggerClientId"]);
                // c.OAuthClientSecret(configuration["AuthServer:SwaggerClientSecret"]);
                // c.OAuthScopes("WebApi");

                foreach (var groupName in typeof(SwaggerGroupConsts).GetFields()
                             .Select(f => f.GetValue(null).ToString()))
                {
                    Log.Information(groupName);
                    options.SwaggerEndpoint($"/swagger/{groupName}/swagger.json", $"{groupName} API");
                }
                var configuration = context.GetConfiguration();
                options.OAuthClientId(configuration["AuthServer:SwaggerClientId"]);
                options.OAuthClientSecret(configuration["AuthServer:SwaggerClientSecret"]);
                options.OAuthScopes("WebApi");

            });

            app.UseAuditing();
            app.UseAbpSerilogEnrichers();
            app.UseConfiguredEndpoints();
        }
    }
}