feat: add registration and login validation

TicketOffice/Pages/Auth/Login.cshtml

@@ -14,12 +14,16 @@
             Авторизація
         </div>
         
-        <input class="field" placeholder="E-mail" autocomplete="off" asp-for="User.Email"/>
+        <input class="field" type="text" placeholder="E-mail" autocomplete="off" asp-for="Email"/>
-        <span asp-validation-for="User.Email" class="validation-error"></span>
+        <div class="validation-error">
+            <span>@Model.emailValidation</span>
+        </div>
         <br>
 
-        <input class="field" placeholder="Пароль" autocomplete="off" asp-for="User.Password"/>
+        <input class="field" type="password" placeholder="Пароль" autocomplete="off" asp-for="Password"/>
-        <span asp-validation-for="User.Password" class="validation-error"></span>
+        <div class="validation-error">
+            <span>@Model.passwordValidation</span>
+        </div>
         <br>
 
         <input class="submit-btn" type="submit" value="Авторизуватись"/>

TicketOffice/Pages/Auth/Login.cshtml.cs

@@ -1,5 +1,7 @@
+using System.Text.RegularExpressions;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.EntityFrameworkCore;
 using TicketOffice.Data;
 using TicketOffice.Models;
 
@@ -7,6 +9,12 @@ namespace TicketOffice.Pages.Auth;
 
 public class LoginModel : PageModel
 {
+    public IList<User> User { get; set; }
+    [BindProperty] public string Email { get; set; }
+    [BindProperty] public string Password { get; set; }
+    public string emailValidation;
+    public string passwordValidation;
+    
     private readonly TicketOfficeContext _context;
     
     public LoginModel(TicketOfficeContext context)
@@ -19,12 +27,64 @@ public class LoginModel : PageModel
         return Page();
     }
 
-    [BindProperty]
-    public User User { get; set; }
-    
     public async Task<IActionResult> OnPostAsync()
     {
-        //Login logic
+        emailValidation = String.Empty;
+        passwordValidation = String.Empty;
+
+        User = await _context.User
+            .Where(u => u.Email == Email)
+            .ToListAsync();
+
+        if (ValidateEmail(Email, out emailValidation) && ValidatePassword(Password, out passwordValidation))
+        {
+            return RedirectToPage("/Index");
+        }
+
         return Page();
     }
+
+    public bool ValidateEmail(string email, out string validationError)
+    {
+        if (User.Any(u => u.Email == email))
+        {
+            validationError = String.Empty;
+            return true;
+        }
+        
+        if (String.IsNullOrWhiteSpace(email))
+        {
+            validationError = "Поле має бути заповненим";
+            return false;
+        }
+        
+        Regex emailRegex = new Regex(@"^[^@\s]+@[^@\s]+\.[^@\s]+$");
+        
+        if (!emailRegex.IsMatch(email))
+        {
+            validationError = "E-mail некоректний";
+            return false;
+        }
+
+        validationError = "E-mail не зареєстровано";
+        return false;
+    }
+
+    public bool ValidatePassword(string password, out string validationError)
+    {
+        if (User.Where(u => u.Email == Email).Any(u => u.Password == password))
+        {
+            validationError = String.Empty;
+            return true;
+        }
+        
+        if (String.IsNullOrWhiteSpace(password))
+        {
+            validationError = "Поле має бути заповненим";
+            return false;
+        }
+
+        validationError = "Неправильний пароль";
+        return false;
+    }
 }

TicketOffice/Pages/Auth/Registration.cshtml

@@ -14,12 +14,16 @@
             Реєстрація
         </div>
         
-        <input class="field" placeholder="E-mail" autocomplete="off" asp-for="User.Email"/>
+        <input class="field" type="text" placeholder="E-mail" autocomplete="off" asp-for="Email"/>
-        <span asp-validation-for="User.Email" class="validation-error"></span>
+        <div class="validation-error">
+            <span>@Model.emailValidation</span>
+        </div>
         <br>
 
-        <input class="field" placeholder="Пароль" autocomplete="off" asp-for="User.Password"/>
+        <input class="field" type="password" placeholder="Пароль" autocomplete="off" asp-for="Password"/>
-        <span asp-validation-for="User.Password" class="validation-error"></span>
+        <div class="validation-error">
+            <span>@Model.passwordValidation</span>
+        </div>
         <br>
 
         <input class="submit-btn" type="submit" value="Зареєструватись"/>

TicketOffice/Pages/Auth/Registration.cshtml.cs

@@ -1,5 +1,7 @@
+using System.Text.RegularExpressions;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.EntityFrameworkCore;
 using TicketOffice.Data;
 using TicketOffice.Models;
 
@@ -7,6 +9,12 @@ namespace TicketOffice.Pages.Auth;
 
 public class RegistrationModel : PageModel
 {
+    public IList<User> User { get; set; }
+    [BindProperty] public string Email { get; set; }
+    [BindProperty] public string Password { get; set; }
+    public string emailValidation;
+    public string passwordValidation;
+    
     private readonly TicketOfficeContext _context;
     
     public RegistrationModel(TicketOfficeContext context)
@@ -16,22 +24,82 @@ public class RegistrationModel : PageModel
 
     public IActionResult OnGet()
     {
+        emailValidation = String.Empty;
+        passwordValidation = String.Empty;
+        
         return Page();
     }
 
-    [BindProperty]
-    public User User { get; set; }
-    
     public async Task<IActionResult> OnPostAsync()
     {
-        if (!ModelState.IsValid)
+        User = await _context.User
+            .Where(u => u.Email == Email)
+            .ToListAsync();
+        
+        if (ValidateEmail(Email, out emailValidation) && ValidatePassword(Password, out passwordValidation))
         {
+            _context.User.Add(new User
+            {
+                Email = Email,
+                Password = Password
+            });
+            await _context.SaveChangesAsync();
+            
+            return RedirectToPage("/Index");
+        }
+
         return Page();
     }
 
-        _context.User.Add(User);
+    public bool ValidateEmail(string email, out string validationError)
-        await _context.SaveChangesAsync();
+    {
+        Regex emailRegex = new Regex(@"^[^@\s]+@[^@\s]+\.[^@\s]+$");
         
-        return RedirectToPage("./");
+        if (String.IsNullOrWhiteSpace(email))
+        {
+            validationError = "Поле має бути заповненим";
+            return false;
+        }
+        
+        if (!emailRegex.IsMatch(email))
+        {
+            validationError = "E-mail некоректний";
+            return false;
+        }
+        
+        if (User.Any())
+        {
+            validationError = "E-mail уже зареєстровано";
+            return false;
+        }
+
+        validationError = String.Empty;
+        return true;
+    }
+
+    public bool ValidatePassword(string passowrd, out string validationError)
+    {
+        if (String.IsNullOrWhiteSpace(passowrd))
+        {
+            validationError = "Поле має бути заповненим";
+            return false;
+        }
+        
+        if (passowrd.Length < 8 || passowrd.Length > 32)
+        {
+            validationError = "Паороль має бути від 8 до 32 символів";
+            return false;
+        }
+        
+        Regex passwordRegex = new Regex(@"^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])(?=.*?[#?!@$%^&*-]).{8,}$");
+        
+        if (!passwordRegex.IsMatch(passowrd))
+        {
+            validationError = "Пароль має містити великі та малі латинські літери, цифри та спеціальні знаки (@, $, % та ін.)";
+            return false;
+        }
+
+        validationError = String.Empty;
+        return true;
     }
 }