Restructure data access layer/data layer

WebAPI/Controllers/UsersController.cs

@@ -1,5 +1,6 @@
-using Microsoft.AspNetCore.Mvc;
 using DataAccessLayer;
+using DataAccessLayer.Entities;
+using Microsoft.AspNetCore.Mvc;
 
 namespace WebAPI.Controllers
 {
@@ -7,7 +8,7 @@ namespace WebAPI.Controllers
     [Route("api/users")]
     public class UsersController : ControllerBase
     {
-        private readonly UserAccountRepository _userAccountRepository;
+        private readonly IUserAccountRepository _userAccountRepository;
 
         public UsersController()
         {
@@ -15,6 +16,7 @@ namespace WebAPI.Controllers
         }
 
         // all users
+        [HttpGet]
         [HttpGet("users")]
         public IActionResult GetAllUsers()
         {
@@ -22,5 +24,61 @@ namespace WebAPI.Controllers
             return Ok(users);
         }
 
+        [HttpGet("{id:guid}")]
+        public IActionResult GetUserById(Guid id)
+        {
+            var user = _userAccountRepository.GetById(id);
+            return user is null ? NotFound() : Ok(user);
+        }
+
+        [HttpGet("by-username/{username}")]
+        public IActionResult GetUserByUsername(string username)
+        {
+            var user = _userAccountRepository.GetByUsername(username);
+            return user is null ? NotFound() : Ok(user);
+        }
+
+        [HttpGet("by-email/{email}")]
+        public IActionResult GetUserByEmail(string email)
+        {
+            var user = _userAccountRepository.GetByEmail(email);
+            return user is null ? NotFound() : Ok(user);
+        }
+
+        [HttpPost]
+        public IActionResult CreateUser([FromBody] UserAccount userAccount)
+        {
+            if (userAccount.UserAccountID == Guid.Empty)
+            {
+                userAccount.UserAccountID = Guid.NewGuid();
+            }
+
+            _userAccountRepository.Add(userAccount);
+            return CreatedAtAction(
+                nameof(GetUserById),
+                new { id = userAccount.UserAccountID },
+                userAccount
+            );
+        }
+
+        [HttpPut("{id:guid}")]
+        public IActionResult UpdateUser(Guid id, [FromBody] UserAccount userAccount)
+        {
+            if (userAccount.UserAccountID != Guid.Empty && userAccount.UserAccountID != id)
+            {
+                return BadRequest("UserAccountID does not match route id.");
+            }
+
+            userAccount.UserAccountID = id;
+            _userAccountRepository.Update(userAccount);
+            return NoContent();
+        }
+
+        [HttpDelete("{id:guid}")]
+        public IActionResult DeleteUser(Guid id)
+        {
+            _userAccountRepository.Delete(id);
+            return NoContent();
+        }
     }
-}
+}