Refactoring and password hashing

Controllers/UsersController.cs

@@ -0,0 +1,68 @@
+using System.Linq;
+
+using Microsoft.AspNetCore.Mvc;
+
+using TextSender_API.Models;
+using TextSender_API.Repositories;
+
+namespace TextSender_API.Controllers;
+
+[ApiController]
+[Route("api/v1/user")]
+public class UsersController : ControllerBase
+{
+    #region Fields
+    private readonly ILogger<UsersController> _logger;
+    private IConfiguration _config;
+    #endregion
+
+
+    #region Constructors        
+
+    public UsersController(ILogger<UsersController> logger, IConfiguration config)
+    {
+        this._logger = logger;
+        this._config = config;
+    }
+    #endregion
+
+    #region Methods
+    [HttpPost("register"), DisableRequestSizeLimit]
+    public IActionResult Upload([FromBody] User userRequest)
+    {
+        try
+        {
+            var connString = this._config.GetConnectionString("MongoDBURI");
+            var userRepo = new UsersRepository(connString!);
+            var saltRepo = new SaltRepository(connString!);
+            var allUsers = userRepo.RetrieveAllUsers();
+            var result = allUsers.Exists(ea => ea.Username!.Equals(userRequest.Username));
+
+            if (!result)
+            {
+                var pwdVerify = new PasswordVerification();
+                var salt = pwdVerify.CreateSalt(userRequest);
+                var hashedPassword = pwdVerify.HashPassword(userRequest, salt);
+
+                this._logger.LogInformation("Creating user");
+                userRequest.Password = hashedPassword;
+                userRequest.DateCreated = DateTime.Now;
+                userRepo.CreateUser(userRequest);
+
+                salt.UserId = userRequest.Id;
+                saltRepo.Create(salt);
+            }
+            else
+            {
+                this._logger.LogInformation("User already exists");
+            }
+        }
+        catch (Exception ex)
+        {
+            this._logger.LogError($"An error occurred: {ex.Message}");
+        }
+
+        return Ok();
+    }
+    #endregion
+}