Added two endpoinds for contacts

Controllers/ContactsController.cs

@@ -28,6 +28,49 @@ public class ContactsController : ControllerBase
     #endregion
 
     #region Methods
+    [HttpGet, DisableRequestSizeLimit]
+    public IActionResult RetrieveContacts([FromQuery(Name = "user_id")] string? userID)
+    {
+        var response = new CreateContactResponse();
+        var connString = this._config.GetConnectionString("MongoDBURI");
+        var userRepo = new UsersRepository(connString!);
+        var contactsRepo = new ContactsRepository(connString!);
+
+        try
+        {
+            var contacts = contactsRepo.RetrieveAll();
+            var users = userRepo.RetrieveAllUsers();
+
+            if (users.Count() == 0)
+            {
+                return BadRequest(response);
+            }
+
+            var user = users.FirstOrDefault(us => us.Id!.Equals(userID));
+
+            if (user == null)
+            {
+                return BadRequest(response);
+            }
+
+            contacts = contacts.Where(c => c.UserID!.Equals(userID)).ToList();
+
+            if (contacts == null || contacts.Count() == 0)
+            {
+                return BadRequest(response);
+            }
+
+            response.Data = contacts;
+        }
+        catch (Exception ex)
+        {
+            this._logger.LogError($"An error occurred: {ex.Message}");
+        }
+
+        return Ok(response);
+    }
+
+
     [HttpPost("new"), DisableRequestSizeLimit]
     public IActionResult CreateContact([FromBody] Contact contact)
     {
@@ -139,6 +182,56 @@ public class ContactsController : ControllerBase
 
         return Ok(response);
     }
+
+
+    [HttpDelete("delete"), DisableRequestSizeLimit]
+    public IActionResult DeleteContact([FromBody] Contact contact)
+    {
+        var response = new CreateContactResponse();
+        var connString = this._config.GetConnectionString("MongoDBURI");
+        var userRepo = new UsersRepository(connString!);
+        var contactsRepo = new ContactsRepository(connString!);
+
+        try
+        {
+            var contacts = contactsRepo.RetrieveAll();
+            var users = userRepo.RetrieveAllUsers();
+
+            if (users.Count() == 0 || contacts.Count() == 0)
+            {
+                return BadRequest(response);
+            }
+
+            var c = contacts.FirstOrDefault(c => c.Id!.Equals(contact.Id));
+
+            if (c == null ||
+                string.IsNullOrEmpty(contact.UserID))
+            {
+                // The Contact does not exists or no user id provided
+                return BadRequest(response);
+            }
+
+            if (!userRepo.Exists(contact.UserID!).Item1)
+            {
+                return BadRequest(response);
+            }
+
+            if (!c.UserID!.Equals(contact.UserID))
+            {
+                // The provided user id does is not the same that created the contact
+                return BadRequest(response);
+            }
+
+            contactsRepo.Delete(c);
+            response.Data.Add(c);
+        }
+        catch (Exception ex)
+        {
+            this._logger.LogError($"An error occurred: {ex.Message}");
+        }
+
+        return Ok(response);
+    }
     #endregion