Phriction - move "move" business logic to the editor

Summary: Ref T4029. Even more code consolidation and cleanup for the long term benefits!

Test Plan: moved a page successfully. tried to move a page to an existing page and got an error. did the two tab trick to try to move a deleted page and got an error.

Reviewers: chad, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T4029

Differential Revision: https://secure.phabricator.com/D10812

src/applications/phriction/controller/PhrictionMoveController.php

@@ -56,46 +56,11 @@ final class PhrictionMoveController extends PhrictionController {
     $submit_uri = $request->getRequestURI()->getPath();
     $cancel_uri = PhrictionDocument::getSlugURI($slug);
 
-    $errors = array();
+    $e_url = true;
-    $error_view = null;
+    $validation_exception = null;
-    $e_url = null;
-
-    $disallowed_statuses = array(
-      PhrictionDocumentStatus::STATUS_DELETED => true, // Silly
-      PhrictionDocumentStatus::STATUS_MOVED => true, // Plain silly
-      PhrictionDocumentStatus::STATUS_STUB => true, // Utterly silly
-    );
-    if (isset($disallowed_statuses[$document->getStatus()])) {
-      $error_dialog = id(new AphrontDialogView())
-        ->setUser($user)
-        ->setTitle('Can not move page!')
-        ->appendChild(pht('An already moved or deleted document '.
-          'can not be moved again.'))
-        ->addCancelButton($cancel_uri);
-
-      return id(new AphrontDialogResponse())->setDialog($error_dialog);
-    }
-
     $content = $document->getContent();
 
-    if ($request->isFormPost() && !count($errors)) {
+    if ($request->isFormPost()) {
-
-      // NOTE: We use the ominpotent user because we can't let users overwrite
-      // documents even if they can't see them.
-      $target_document = id(new PhrictionDocumentQuery())
-        ->setViewer(PhabricatorUser::getOmnipotentUser())
-        ->withSlugs(array($target_slug))
-        ->needContent(true)
-        ->executeOne();
-
-      // Considering to overwrite existing docs? Nuke this!
-      $exists = PhrictionDocumentStatus::STATUS_EXISTS;
-      if ($target_document && $target_document->getStatus() == $exists) {
-        $errors[] = pht('Can not overwrite existing target document.');
-        $e_url = pht('Already exists.');
-      }
-
-      if (!count($errors)) {
 
       $editor = id(new PhrictionTransactionEditor())
         ->setActor($user)
@@ -107,24 +72,20 @@ final class PhrictionMoveController extends PhrictionController {
       $xactions[] = id(new PhrictionTransaction())
         ->setTransactionType(PhrictionTransaction::TYPE_MOVE_TO)
         ->setNewValue($document);
-        if (!$target_document) {
       $target_document = PhrictionDocument::initializeNewDocument(
         $user,
         $target_slug);
-        }
+      try {
         $editor->applyTransactions($target_document, $xactions);
-
         $redir_uri = PhrictionDocument::getSlugURI(
           $target_document->getSlug());
         return id(new AphrontRedirectResponse())->setURI($redir_uri);
+      } catch (PhabricatorApplicationTransactionValidationException $ex) {
+        $validation_exception = $ex;
+        $e_url = $ex->getShortMessage(PhrictionTransaction::TYPE_MOVE_TO);
       }
     }
 
-    if ($errors) {
-      $error_view = id(new AphrontErrorView())
-        ->setErrors($errors);
-    }
-
     $form = id(new PHUIFormLayoutView())
       ->setUser($user)
       ->appendChild(
@@ -141,12 +102,13 @@ final class PhrictionMoveController extends PhrictionController {
       ->appendChild(
         id(new AphrontFormTextControl())
         ->setLabel(pht('Edit Notes'))
-        ->setValue($content->getDescription())
+        ->setValue(pht('Moving document to a new location.'))
         ->setError(null)
         ->setName('description'));
 
     $dialog = id(new AphrontDialogView())
       ->setUser($user)
+      ->setValidationException($validation_exception)
       ->setTitle(pht('Move Document'))
       ->appendChild($form)
       ->setSubmitURI($submit_uri)

src/applications/phriction/editor/PhrictionTransactionEditor.php

@@ -477,6 +477,53 @@ final class PhrictionTransactionEditor
             }
           }
           break;
+
+        case PhrictionTransaction::TYPE_MOVE_TO:
+          $source_document = $xaction->getNewValue();
+          switch ($source_document->getStatus()) {
+            case PhrictionDocumentStatus::STATUS_DELETED:
+              $e_text = pht('A deleted document can not be moved.');
+              break;
+            case PhrictionDocumentStatus::STATUS_MOVED:
+              $e_text = pht('A moved document can not be moved again.');
+              break;
+            case PhrictionDocumentStatus::STATUS_STUB:
+              $e_text = pht('A stub document can not be moved.');
+              break;
+            default:
+              $e_text = null;
+              break;
+          }
+
+          if ($e_text) {
+            $error = new PhabricatorApplicationTransactionValidationError(
+              $type,
+              pht('Can not move document.'),
+              $e_text,
+              $xaction);
+            $errors[] = $error;
+          }
+
+          // NOTE: We use the ominpotent user because we can't let users
+          // overwrite documents even if they can't see them.
+          $target_document = id(new PhrictionDocumentQuery())
+            ->setViewer(PhabricatorUser::getOmnipotentUser())
+            ->withSlugs(array($object->getSlug()))
+            ->needContent(true)
+            ->executeOne();
+
+          // Considering to overwrite existing docs? Nuke this!
+          $exists = PhrictionDocumentStatus::STATUS_EXISTS;
+          if ($target_document && $target_document->getStatus() == $exists) {
+            $error = new PhabricatorApplicationTransactionValidationError(
+              $type,
+              pht('Can not move document.'),
+              pht('Can not overwrite existing target document.'),
+              $xaction);
+            $errors[] = $error;
+          }
+          break;
+
         case PhrictionTransaction::TYPE_DELETE:
           switch ($object->getStatus()) {
             case PhrictionDocumentStatus::STATUS_DELETED:
@@ -498,7 +545,6 @@ final class PhrictionTransactionEditor
             $e_text,
             $xaction);
           $errors[] = $error;
-
           break;
       }
     }