Add project files.

CalendarReminder.Api/Controllers/AuthController.cs

@@ -0,0 +1,58 @@
+using CalendarReminder.Api.Data;
+using CalendarReminder.Api.Models;
+using CalendarReminder.Api.Services;
+using CalendarReminder.Domain.Entities;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+
+namespace CalendarReminder.Api.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+public class AuthController : ControllerBase
+{
+    private readonly AppDbContext _db;
+    private readonly TokenService _tokenService;
+
+    public AuthController(AppDbContext db, TokenService tokenService)
+    {
+        _db = db;
+        _tokenService = tokenService;
+    }
+
+    // POST api/auth/register
+    [HttpPost("register")]
+    public async Task<IActionResult> Register(RegisterRequest req)
+    {
+        if (await _db.Users.AnyAsync(u => u.Email == req.Email))
+            return BadRequest("Email je už registrovaný.");
+
+        if (await _db.Users.AnyAsync(u => u.Username == req.Username))
+            return BadRequest("Používateľské meno je obsadené.");
+
+        var user = new User
+        {
+            Username = req.Username,
+            Email = req.Email,
+            PasswordHash = BCrypt.Net.BCrypt.HashPassword(req.Password)
+        };
+
+        _db.Users.Add(user);
+        await _db.SaveChangesAsync();
+
+        var token = _tokenService.GenerateToken(user);
+        return Ok(new AuthResponse(token, user.Username, user.Email));
+    }
+
+    // POST api/auth/login
+    [HttpPost("login")]
+    public async Task<IActionResult> Login(LoginRequest req)
+    {
+        var user = await _db.Users.FirstOrDefaultAsync(u => u.Email == req.Email);
+        if (user is null || !BCrypt.Net.BCrypt.Verify(req.Password, user.PasswordHash))
+            return Unauthorized("Nesprávny email alebo heslo.");
+
+        var token = _tokenService.GenerateToken(user);
+        return Ok(new AuthResponse(token, user.Username, user.Email));
+    }
+}