using Application.Domain.Entities;
using Infrastructure.Data;
using Infrastructure.Email;
using Infrastructure.Extensions;
using Infrastructure.Sms;
using Infrastructure.Web;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authentication.Cookies;
using Microsoft.AspNetCore.Hosting;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace ManagementCenter
{
    public class Startup : BaseStartup
    {
        public Startup(IConfiguration configuration, IWebHostEnvironment env) : base(configuration, env)
        {
        }

        public override void ConfigureServices(IServiceCollection services)
        {
            services.AddTransient<IEmailSender, EmptyEmailSender>();
            services.AddTransient<ISmsSender, EmptySmsSender>();
            services.AddSignalR(o => o.EnableDetailedErrors = true);
            services.AddTransient<IRoleService, RoleService>();
            base.ConfigureServices(services);
        }

        public override Task ValidatePrincipal(CookieValidatePrincipalContext arg)
        {
            return Task.Run(() =>
            {
                var userRepo = arg.HttpContext.RequestServices.GetService<IRepository<User>>();

                var userName = arg.Principal.Identity.Name;
                var userPermissions = userRepo.ReadOnlyTable().Where(o => o.UserName == userName)
                                 .SelectMany(o => o.UserRoles)
                                 .Select(o => o.Role)
                                 .SelectMany(o => o.RolePermissions)
                                 .Select(o => o.Permission.Number)
                                 .ToList();
                var currentPermissions = arg.Principal.Claims.Where(o => o.Type == "Role").Select(o => o.Value).ToList();
                if (!currentPermissions.SequenceEqual(userPermissions))
                {
                    arg.HttpContext.SignOutAsync();
                    arg.HttpContext.SignIn(userName, userPermissions, arg.Properties.IsPersistent);
                }
            });
        }

        public override void OnModelCreating(ModelBuilder modelBuilder)
        {
            modelBuilder.Entity<PermissionCategory>().HasOne(o => o.Parent).WithMany(o => o.Children).HasForeignKey(o => o.ParentId);
            modelBuilder.Entity<Permission>().HasOne(o => o.Category).WithMany(o => o.Permissions).HasForeignKey(o => o.CategoryId);
            modelBuilder.Entity<UserRole>().HasOne(o => o.User).WithMany(o => o.UserRoles).HasForeignKey(o => o.UserId);
            modelBuilder.Entity<UserRole>().HasOne(o => o.Role).WithMany(o => o.UserRoles).HasForeignKey(o => o.RoleId);
            modelBuilder.Entity<RolePermission>().HasOne(o => o.Role).WithMany(o => o.RolePermissions).HasForeignKey(o => o.RoleId);
            modelBuilder.Entity<RolePermission>().HasOne(o => o.Permission).WithMany(o => o.RolePermissions).HasForeignKey(o => o.PermissionId);
            modelBuilder.Entity<User>().HasIndex(o => o.UserName).IsUnique();
            modelBuilder.Entity<Role>().HasIndex(o => o.Name).IsUnique();
            modelBuilder.Entity<PermissionCategory>().HasIndex(o => o.Number).IsUnique();
            modelBuilder.Entity<Permission>().HasIndex(o => o.Number).IsUnique();
            modelBuilder.Entity<UserRole>().HasIndex(o => new { o.UserId, o.RoleId }).IsUnique();
            modelBuilder.Entity<RolePermission>().HasIndex(o => new { o.RoleId, o.PermissionId }).IsUnique();
        }

        public override void Seed(DbContext dbContext, IServiceProvider serviceProvider, IConfiguration configuration)
        {
            dbContext.Set<PermissionCategory>().Add(new PermissionCategory
            {
                Name = "配置",
                Number = "EFConfigurationValue",
                Permissions = new List<Permission> {
                    new Permission { Name = "查看配置", Number = "Read-EFConfigurationValue" },
                    new Permission { Name = "添加配置", Number = "Add-EFConfigurationValue" },
                    new Permission { Name = "修改配置", Number = "Edit-EFConfigurationValue" },
                    new Permission { Name = "删除配置", Number = "Delete-EFConfigurationValue" }
                }
            });
            foreach (var item in dbContext.Model.GetEntityTypes())
            {
                var type = item.ClrType;
                var name = type.GetDisplayName();
                var number = type.Name;
                var category = new PermissionCategory
                {
                    Name = name,
                    Number = type.Name
                };
                category.Permissions.Add(new Permission { Name = $"查看{name}", Number = $"Read-{number}" });
                category.Permissions.Add(new Permission { Name = $"添加{name}", Number = $"Add-{number}" });
                category.Permissions.Add(new Permission { Name = $"修改{name}", Number = $"Edit-{number}" });
                category.Permissions.Add(new Permission { Name = $"删除{name}", Number = $"Delete-{number}" });
                dbContext.Set<PermissionCategory>().Add(category);
            }
            dbContext.SaveChanges();

            var saRole = new Role { Name = "超级管理员", IsReadOnly = true };
            var adminRole = new Role { Name = "管理员", IsReadOnly = true };

            foreach (var item in dbContext.Set<Permission>())
            {
                saRole.RolePermissions.Add(new RolePermission { Permission = item, IsReadOnly = true });
                if (!item.Name.Contains("删除"))
                {
                    adminRole.RolePermissions.Add(new RolePermission { Permission = item, IsReadOnly = true });
                }
            }

            dbContext.Set<User>().Add(new User
            {
                UserName = "super",
                UserRoles = new List<UserRole> { new UserRole { Role = saRole } }
            });
            var user1Id = dbContext.Set<User>().Add(new User
            {
                UserName = "admin",
                UserRoles = new List<UserRole> { new UserRole { Role = adminRole } }
            }).Entity.Id;
            dbContext.SaveChanges();
        }
    }
}