first commit

backend/Controllers/UserController.cs

@@ -0,0 +1,129 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using backend.Data;
+using backend.DTOs;
+using backend.Models;
+
+namespace backend.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+public class UserController : ControllerBase
+{
+    private readonly AppDbContext _db;
+
+    public UserController(AppDbContext db)
+    {
+        _db = db;
+    }
+
+    [HttpPost("register")]
+    public async Task<IActionResult> Register([FromBody] RegisterRequest request)
+    {
+        if (string.IsNullOrWhiteSpace(request.FullName) || string.IsNullOrWhiteSpace(request.Contact))
+        {
+            return BadRequest(new { message = "نام و شناسه الزامی هستند." });
+        }
+
+        if (request.Contact.Length < 5)
+        {
+            return BadRequest(new { message = "شناسه باید حداقل ۵ کاراکتر باشد." });
+        }
+
+        // Check if contact already exists
+        var existingUser = await _db.Users.FirstOrDefaultAsync(u => u.Contact == request.Contact);
+        if (existingUser != null)
+        {
+            return Conflict(new { message = "این شناسه قبلاً ثبت شده است. لطفاً با کد رهگیری وارد شوید." });
+        }
+
+        // Generate unique tracking code
+        string trackingCode;
+        do
+        {
+            trackingCode = GenerateTrackingCode();
+        } while (await _db.Users.AnyAsync(u => u.TrackingCode == trackingCode));
+
+        var user = new User
+        {
+            FullName = request.FullName.Trim(),
+            Contact = request.Contact.Trim(),
+            TrackingCode = trackingCode
+        };
+
+        _db.Users.Add(user);
+
+        // Save the user first so that user.Id is populated by the database
+        await _db.SaveChangesAsync();
+
+        // Create initial total score record with the now-populated user.Id
+        var totalScore = new UserTotalScore
+        {
+            UserId = user.Id,
+            TotalPoints = 0
+        };
+        _db.UserTotalScores.Add(totalScore);
+
+        await _db.SaveChangesAsync();
+
+        return Ok(new RegisterResponse
+        {
+            UserId = user.Id,
+            TrackingCode = trackingCode
+        });
+    }
+
+    [HttpPost("login")]
+    public async Task<IActionResult> Login([FromBody] LoginRequest request)
+    {
+        if (string.IsNullOrWhiteSpace(request.TrackingCode))
+        {
+            return BadRequest(new { message = "کد رهگیری الزامی است." });
+        }
+
+        var user = await _db.Users
+            .Include(u => u.QuizAttempt)
+            .Include(u => u.KhatmSelections)
+            .FirstOrDefaultAsync(u => u.TrackingCode == request.TrackingCode.Trim());
+
+        if (user == null)
+        {
+            return NotFound(new { message = "کد رهگیری نامعتبر است." });
+        }
+
+        return Ok(new LoginResponse
+        {
+            UserId = user.Id,
+            FullName = user.FullName,
+            Contact = user.Contact,
+            IsQuizCompleted = user.QuizAttempt != null,
+            KhatmSelections = user.KhatmSelections
+                .Where(ks => ks.IsSelected)
+                .Select(ks => ks.KhatmItemId)
+                .ToList()
+        });
+    }
+
+    [HttpGet("{userId}/score")]
+    public async Task<IActionResult> GetScore(int userId)
+    {
+        var totalScore = await _db.UserTotalScores
+            .FirstOrDefaultAsync(ts => ts.UserId == userId);
+
+        if (totalScore == null)
+        {
+            return NotFound(new { message = "کاربر یافت نشد." });
+        }
+
+        return Ok(new UserScoreResponse
+        {
+            TotalScore = totalScore.TotalPoints
+        });
+    }
+
+    private static string GenerateTrackingCode()
+    {
+        var random = new Random();
+        return random.Next(1000, 10000).ToString();
+    }
+}