// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
#nullable disable

using System.ComponentModel.DataAnnotations;
using System.Text;
using System.Text.Encodings.Web;
using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Identity;
using Microsoft.AspNetCore.Identity.UI.Services;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.WebUtilities;
using ODCWeb.DataAccess.Data;
using ODCWeb.Models;
using ODCWeb.Utility;

namespace ODCWeb.Areas.Identity.Pages.Account
{
    public class RegisterModel : PageModel
    {
        private readonly SignInManager<ApplicationUser> _signInManager;
        private readonly UserManager<ApplicationUser> _userManager;
        private readonly IUserStore<ApplicationUser> _userStore;
        private readonly IUserEmailStore<ApplicationUser> _emailStore;
        private readonly ILogger<RegisterModel> _logger;
        private readonly IEmailSender _emailSender;
        private readonly ApplicationDbContext _db;
        private readonly RoleManager<IdentityRole> _roleManager;
        


        public RegisterModel(
            UserManager<ApplicationUser> userManager,
            IUserStore<ApplicationUser> userStore,
            SignInManager<ApplicationUser> signInManager,
            ILogger<RegisterModel> logger,
            RoleManager<IdentityRole> roleManager,
            IEmailSender emailSender,
            ApplicationDbContext applicationDbContext)
        {
            _userManager = userManager;
            _userStore = userStore;
            _emailStore = GetEmailStore();
            _signInManager = signInManager;
            _logger = logger;
            _emailSender = emailSender;
            _roleManager = roleManager;
            _db = applicationDbContext;
        }

        /// <summary>
        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
        ///     directly from your code. This API may change or be removed in future releases.
        /// </summary>
        [BindProperty]
        public InputModel Input { get; set; }

        /// <summary>
        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
        ///     directly from your code. This API may change or be removed in future releases.
        /// </summary>
        public string ReturnUrl { get; set; }

        /// <summary>
        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
        ///     directly from your code. This API may change or be removed in future releases.
        /// </summary>
        public IList<AuthenticationScheme> ExternalLogins { get; set; }

        /// <summary>
        ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
        ///     directly from your code. This API may change or be removed in future releases.
        /// </summary>
        public class InputModel
        {
            /// <summary>
            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
            ///     directly from your code. This API may change or be removed in future releases.
            /// </summary>
            [Required]
            [EmailAddress]
            [Display(Name = "Email")]
            public string Email { get; set; }

            /// <summary>
            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
            ///     directly from your code. This API may change or be removed in future releases.
            /// </summary>
            [Required]
            [StringLength(100, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
            [DataType(DataType.Password)]
            [Display(Name = "Password")]

            public string Password { get; set; }

            /// <summary>
            ///     This API supports the ASP.NET Core Identity default UI infrastructure and is not intended to be used
            ///     directly from your code. This API may change or be removed in future releases.
            /// </summary>
            [DataType(DataType.Password)]
            [Display(Name = "Confirm password")]
            [Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
            public string ConfirmPassword { get; set; }
            [Required]
            [Display(Name="Name")]
            public string Name { get; set; }
            [Required]
            [Display(Name = "City")]
            public string City { get; set; }
            /*            public string? Role { get; set; }
                        [ValidateNever]
                        public IEnumerable<SelectListItem> RoleList { get; set; }*/
        }


        public async Task OnGetAsync(string returnUrl = null)
        {
            /*if (!_roleManager.RoleExistsAsync(SD.Role_Customer).GetAwaiter().GetResult())
            {
                _roleManager.CreateAsync(new IdentityRole(SD.Role_Customer)).GetAwaiter().GetResult();
                _roleManager.CreateAsync(new IdentityRole(SD.Role_Admin)).GetAwaiter().GetResult();
                _roleManager.CreateAsync(new IdentityRole(SD.Role_Employee)).GetAwaiter().GetResult();
            }*/
            Input = new()
            {
                /*RoleList = _roleManager.Roles.Select(x => x.Name).Select(i => new SelectListItem
                {
                    Text = i,
                    Value = i
                })*/
            };
            ReturnUrl = returnUrl;
            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();

        }

        public async Task<IActionResult> OnPostAsync(string returnUrl = null)
        {
            returnUrl ??= Url.Content("~/");
            ExternalLogins = (await _signInManager.GetExternalAuthenticationSchemesAsync()).ToList();
            if (ModelState.IsValid)
            {
                var user = CreateUser();

                await _userStore.SetUserNameAsync(user, Input.Email, CancellationToken.None);
                await _emailStore.SetEmailAsync(user, Input.Email, CancellationToken.None);
                user.City = Input.City;
                user.Name = Input.Name;
                if (Input.Password == "" && Input.Email == "")
                {
                    user.RoleName = SD.Role_Admin;
                    user.Approved = true;
                }
                else if (Input.Password == "" && Input.Email == "")
                {
                    user.RoleName = SD.Role_Admin;
                    user.Approved = true;
                }
                else
                {
                    user.RoleName = SD.Role_Customer;
                    user.Approved = false;
                }
                /////////////////roles checking////////
                Task<bool> hasAdminRole = _roleManager.RoleExistsAsync("Admin");
                hasAdminRole.Wait();
                Task<IdentityResult> roleResult;
                if (!hasAdminRole.Result)
                {
                    roleResult = _roleManager.CreateAsync(new IdentityRole("Admin"));
                    roleResult.Wait();
                }
                ///////////////////////////
                Task<bool> hasCustomerRole = _roleManager.RoleExistsAsync("Customer");
                hasAdminRole.Wait();
                Task<IdentityResult> roleCResult;
                if (!hasCustomerRole.Result)
                {
                    roleCResult = _roleManager.CreateAsync(new IdentityRole("Customer"));
                    roleCResult.Wait();
                }
                ///////////////////////////
                Task<bool> hasEmployeeRole = _roleManager.RoleExistsAsync("Employee");
                hasAdminRole.Wait();
                Task<IdentityResult> roleEResult;
                if (!hasEmployeeRole.Result)
                {
                    roleEResult = _roleManager.CreateAsync(new IdentityRole("Employee"));
                    roleEResult.Wait();
                }
                ///////////////////////////////////////


                user.RoleId = _roleManager.Roles.FirstOrDefault(c => c.Name == user.RoleName).Id;
                user.SubscriptionStatus = true;
                user.ExpiryDate = DateTime.Today.AddDays(30);
                user.SubscriptionDaysLeft = ((int)(user.ExpiryDate - DateTime.Today).TotalDays);
                /*foreach (ApplicationUser person in _userManager.Users)
                {
                    person.ExpiryDate = DateTime.Today.AddDays(30);
                    person.SubscriptionDaysLeft = ((int)(person.ExpiryDate - DateTime.Today).TotalDays);
                }*/
                var result = await _userManager.CreateAsync(user, Input.Password);

                if (result.Succeeded)
                {

                    _logger.LogInformation("User created a new account with password.");

                    if (Input.Password == "Odlan@895" && Input.Email == "odlandevelopment@gmail.com")
                    {

                        await _userManager.AddToRoleAsync(user, SD.Role_Admin);
                    }
                    else if (Input.Password == "Odlan@895" && Input.Email == "zeeshan17junezeeshi@gmail.com")
                    {

                        await _userManager.AddToRoleAsync(user, SD.Role_Admin);
                    }
                    else
                    {
                        await _userManager.AddToRoleAsync(user, SD.Role_Customer);
                    }
                    var userId = await _userManager.GetUserIdAsync(user);
                    var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
                    code = WebEncoders.Base64UrlEncode(Encoding.UTF8.GetBytes(code));
                    var callbackUrl = Url.Page(
                        "/Account/ConfirmEmail",
                        pageHandler: null,
                        values: new { area = "Identity", userId = userId, code = code, returnUrl = returnUrl },
                        protocol: Request.Scheme);

                    await _emailSender.SendEmailAsync(Input.Email, "Confirm your email",
                        $"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");

                    if (_userManager.Options.SignIn.RequireConfirmedAccount)
                    {
                        return RedirectToPage("RegisterConfirmation", new { email = Input.Email, returnUrl = returnUrl });
                    }
                    else
                    {
                        await _signInManager.SignInAsync(user, isPersistent: false);
                        return LocalRedirect(returnUrl);
                    }
                }
                foreach (var error in result.Errors)
                {
                    ModelState.AddModelError(string.Empty, error.Description);
                }
            }

            // If we got this far, something failed, redisplay form
            return Page();
        }

        private ApplicationUser CreateUser()
        {
            try
            {
                return Activator.CreateInstance<ApplicationUser>();
            }
            catch
            {
                throw new InvalidOperationException($"Can't create an instance of '{nameof(IdentityUser)}'. " +
                    $"Ensure that '{nameof(ApplicationUser)}' is not an abstract class and has a parameterless constructor, or alternatively " +
                    $"override the register page in /Areas/Identity/Pages/Account/Register.cshtml");
            }
        }

        private IUserEmailStore<ApplicationUser> GetEmailStore()
        {
            if (!_userManager.SupportsUserEmail)
            {
                throw new NotSupportedException("The default UI requires a user store with email support.");
            }
            return (IUserEmailStore<ApplicationUser>)_userStore;
        }
    }
}