using Infrastructure.Data;
using Infrastructure.Jwt;
using Infrastructure.Office;
using Infrastructure.Security;
using Infrastructure.UI;
using Infrastructure.Web.Authentication.Cookies;
using Infrastructure.Web.Mvc.ModelBinding.Metadata;
using Infrastructure.Web.SignalR;
using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.AspNetCore.Localization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Razor;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using Newtonsoft.Json.Serialization;
using Swashbuckle.AspNetCore.Swagger;
using System;
using System.Globalization;
using System.Reflection;
using System.Text.Encodings.Web;
using System.Text.Unicode;
using System.Threading.Tasks;

namespace Infrastructure.Web
{
    public class BaseStartup
    {
        protected readonly IConfiguration _cfg;
        protected readonly IHostingEnvironment _env;
        private readonly bool _useMiniProfiler;
        protected string connectionString;
        protected bool useSqlite;

        public BaseStartup(IConfiguration configuration, IHostingEnvironment env)
        {
            this._cfg = configuration;
            this._env = env;
            this._useMiniProfiler = this._cfg.GetValue<bool>("UseMiniProfiler", false);
        }

        public virtual void ConfigureServices(IServiceCollection services)
        {
            services.AddSingleton(_cfg as IConfigurationRoot);
            if (this._useMiniProfiler)
            {
                services.AddMiniProfiler().AddEntityFramework();
            }
            services.AddCors(options => options.AddPolicy("CorsPolicy",
              builder =>
              {
                  builder.SetIsOriginAllowed(o => true)
                  .AllowAnyMethod()
                  .AllowAnyHeader()
                  .AllowCredentials();
              }));
            services.AddSingleton(HtmlEncoder.Create(UnicodeRanges.All));
            services.Configure<FormOptions>(o =>
            {
                o.ValueCountLimit = int.MaxValue;
                o.MultipartBodyLengthLimit = long.MaxValue;
            });
            this.ConfigureOptions(services);
            EfDbContext.OnModelCreatingAction = this.OnModelCreating;
            services.AddScoped<DbContext, EfDbContext>();
            this.useSqlite = this._cfg.GetSection("AppSettings").GetValue<string>("database") == "sqlite";
            if (useSqlite)
            {
                connectionString = this._cfg.GetConnectionString("database.sqlite.connection");
                services.AddDbContext<EfDbContext>(options => options.UseSqlite(connectionString));
            }
            else
            {
                connectionString = this._cfg.GetConnectionString("database.mysql.connection");
                services.AddDbContext<EfDbContext>(options => options.UseMySql(connectionString));
            }
            //https://github.com/aspnet/Entropy/blob/master/samples/Localization.StarterWeb/Startup.cs
            services.AddLocalization(options => options.ResourcesPath = null);
            //https://yetawf.com/BlogEntry/Title/AdditionalMetadataAttribute%20Anyone/?BlogEntry=1005
            services.AddMvc(o => o.ModelMetadataDetailsProviders.Add(new AdditionalMetadataProvider()))
                .SetCompatibilityVersion(CompatibilityVersion.Latest)
                .AddJsonOptions(o => { o.SerializerSettings.ContractResolver = new DefaultContractResolver(); })
                .AddControllersAsServices()
                .AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix)
                .AddDataAnnotationsLocalization(options =>
                {
                    options.DataAnnotationLocalizerProvider = (type, factory) =>
                    {
                        var localizer = factory.Create("Resources.Resource", Assembly.GetEntryAssembly().FullName);
                        return localizer;
                    };
                });
            services.Configure<RequestLocalizationOptions>(o =>
            {
                var supportedCultures = new[]
                {
                    new CultureInfo("zh-CN"),
                    new CultureInfo("en-US")
                };
                o.DefaultRequestCulture = new RequestCulture(culture: "zh-CN", uiCulture: "zh-CN");
                o.SupportedCultures = supportedCultures;
                o.SupportedUICultures = supportedCultures;
            });
            this.AddAuthentication(services);
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new Info
                {
                    Title = this._cfg.GetValue<string>("openapi.title", "web api"),
                    Version = this._cfg.GetValue<string>("openapi.version", "1.0")
                });
                c.EnableAnnotations();
            });
            services.AddDistributedMemoryCache();
            services.AddSession(options =>
            {
                options.IdleTimeout = TimeSpan.FromMinutes(30);
                options.Cookie.HttpOnly = true;
            });
            services.AddHttpClient();
            services.AddSignalR(o => o.EnableDetailedErrors = true)
                .AddJsonProtocol(options =>
                {
                    options.PayloadSerializerSettings.ContractResolver =
                    new DefaultContractResolver();
                }); ;
            services.AddMemoryCache();
            services.AddHttpContextAccessor();
            services.AddSingleton<ITicketStore, DistributedCacheTicketStore>();
            services.AddTransient(typeof(IRepository<>), typeof(EfRepository<>));
            services.AddTransient<IEncryptionService, EncryptionService>();
            services.AddTransient<IJwtHelper, JwtHelper>();
            services.AddTransient<IExcelReader, ExcelReader>();
        }

        public virtual void ConfigureOptions(IServiceCollection services)
        {
            services.ConfigureOptions(new FileConfigureOptions(this._env));
        }

        public virtual void AddAuthentication(IServiceCollection services)
        {
            services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
                .AddCookie(CookieAuthenticationDefaults.AuthenticationScheme, opts =>
                {
                    opts.Cookie.Name = this.GetType().FullName;
                    opts.LoginPath = "/Account/Login";
                    opts.LogoutPath = "/Account/Logout";
                    opts.AccessDeniedPath = "/Account/AccessDenied";
                    //不配置SessionStore则存储到cookie
                    var useCookieSessionStore = this._cfg.GetSection("AppSettings").GetValue<bool>("UseCookieSessionStore");
                    if (!useCookieSessionStore)
                    {
                        opts.SessionStore = services.BuildServiceProvider().GetService<ITicketStore>();
                    }
                    opts.Events = new CookieAuthenticationEvents
                    {
                        //OnRedirectToLogin = RedirectToLogin(),
                        OnValidatePrincipal = ValidatePrincipal
                    };
                });
        }

        public virtual void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
                app.UseStatusCodePagesWithReExecute("/Error");
            }
            if (this._useMiniProfiler)
            {
                app.UseMiniProfiler();
            }
            app.UseStaticFiles();
            var localizationOption = app.ApplicationServices.GetService<IOptions<RequestLocalizationOptions>>();
            app.UseRequestLocalization(localizationOption.Value);
            app.UseSession();
            this.UseAuthentication(app);
            app.UseSwagger();
            app.UseSwaggerUI(c =>
            {
                c.SwaggerEndpoint("/swagger/v1/swagger.json", "API V1");
            });
            app.UseCors("CorsPolicy");
            this.UseSignalR(app);
            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "areas",
                    template: "{area:exists}/{controller}/{action}/{id?}",
                    defaults: new { controller = "Home", action = "Index" });

                routes.MapRoute(
                    name: "default",
                    template: "{controller}/{action}/{id?}",
                    defaults: new { controller = "Home", action = "Index" });
            });
            using (var scope = app.ApplicationServices.CreateScope())
            {
                var services = scope.ServiceProvider;
                var context = services.GetService<DbContext>();
                var configuration = services.GetService<IConfiguration>();
                if (context.Database.EnsureCreated())
                {
                    this.Seed(context, services, configuration);
                }
            }
        }

        public virtual void UseAuthentication(IApplicationBuilder app)
        {
            app.UseAuthentication();
        }

        public virtual void UseSignalR(IApplicationBuilder app)
        {
            app.UseSignalR(routes =>
            {
                routes.MapHub<PageHub>("/hub", o =>
                {
                    o.ApplicationMaxBufferSize = long.MaxValue;
                    o.TransportMaxBufferSize = long.MaxValue;
                });
            });
        }

        public virtual void OnModelCreating(ModelBuilder modelBuilder)
        {
        }

        public virtual void Seed(DbContext dbContext, IServiceProvider serviceProvider, IConfiguration configuration)
        {
        }

        public virtual Task ValidatePrincipal(CookieValidatePrincipalContext arg)
        {
            return Task.CompletedTask;
        }
    }
}