Give Phame blogs mutable interact policies

Summary:
Ref T13661.

I'm fairly sure these policies don't actually do anything (you can't "interact" with a blog) but the primarily support a Phame Post object policy of "Same as Parent Blog", which is the "natural" interact policy for a post.

Most of this is infrastructure support for mutable interact policies: today, only Maniphest has interact mutability and only via indirect effects (locking tasks), not through a directly mutable "Can Interact" policy.

Test Plan:
Ran storage upgrade, edited interact policy of a blog, saw appropriate persistence and transactions.

Created and edited a task to make sure there's no weird fallout from increasing what can be done with interact policies.

Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam

Maniphest Tasks: T13661

Differential Revision: https://secure.phabricator.com/D21751

resources/sql/autopatches/20220401.phameinteract.03.sql

···
+ALTER TABLE {$NAMESPACE}_phame.phame_blog
+  ADD interactPolicy VARBINARY(64) NOT NULL;
+
+UPDATE {$NAMESPACE}_phame.phame_blog
+  SET interactPolicy = 'users'
+  WHERE interactPolicy = '';

src/applications/phame/editor/PhameBlogEditor.php

···
 
   public function getTransactionTypes() {
     $types = parent::getTransactionTypes();
+
     $types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;
     $types[] = PhabricatorTransactions::TYPE_EDIT_POLICY;
+    $types[] = PhabricatorTransactions::TYPE_INTERACT_POLICY;
 
     return $types;
   }

src/applications/phame/storage/PhameBlog.php

···
   protected $creatorPHID;
   protected $viewPolicy;
   protected $editPolicy;
+  protected $interactPolicy;
   protected $status;
   protected $mailKey;
   protected $profileImagePHID;
···
 
         'editPolicy' => 'policy',
         'viewPolicy' => 'policy',
+        'interactPolicy' => 'policy',
       ),
       self::CONFIG_KEY_SCHEMA => array(
         'key_phid' => null,
···
       ->setCreatorPHID($actor->getPHID())
       ->setStatus(self::STATUS_ACTIVE)
       ->setViewPolicy(PhabricatorPolicies::getMostOpenPolicy())
-      ->setEditPolicy(PhabricatorPolicies::POLICY_USER);
+      ->setEditPolicy(PhabricatorPolicies::POLICY_USER)
+      ->setInteractPolicy(PhabricatorPolicies::POLICY_USER);
+
     return $blog;
   }
 
···
   public function getCapabilities() {
     return array(
       PhabricatorPolicyCapability::CAN_VIEW,
+      PhabricatorPolicyCapability::CAN_INTERACT,
       PhabricatorPolicyCapability::CAN_EDIT,
     );
   }
···
     switch ($capability) {
       case PhabricatorPolicyCapability::CAN_VIEW:
         return $this->getViewPolicy();
+      case PhabricatorPolicyCapability::CAN_INTERACT:
+        return $this->getInteractPolicy();
       case PhabricatorPolicyCapability::CAN_EDIT:
         return $this->getEditPolicy();
     }

src/applications/policy/editor/PhabricatorPolicyEditEngineExtension.php

···
         'description.conduit' => pht('Change the join policy of the object.'),
         'edit' => 'join',
       ),
+      PhabricatorTransactions::TYPE_INTERACT_POLICY => array(
+        'key' => 'policy.interact',
+        'aliases' => array('interact'),
+        'capability' => PhabricatorPolicyCapability::CAN_INTERACT,
+        'label' => pht('Interact Policy'),
+        'description' => pht('Controls who can interact with the object.'),
+        'description.conduit'
+          => pht('Change the interaction policy of the object.'),
+        'edit' => 'interact',
+      ),
     );
 
     if ($object instanceof PhabricatorPolicyCodexInterface) {

src/applications/transactions/constants/PhabricatorTransactions.php

···
   const TYPE_VIEW_POLICY  = 'core:view-policy';
   const TYPE_EDIT_POLICY  = 'core:edit-policy';
   const TYPE_JOIN_POLICY  = 'core:join-policy';
+  const TYPE_INTERACT_POLICY = 'core:interact-policy';
   const TYPE_EDGE         = 'core:edge';
   const TYPE_CUSTOMFIELD  = 'core:customfield';
   const TYPE_TOKEN        = 'token:give';

src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php

···
           return null;
         }
         return $object->getJoinPolicy();
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
+        if ($this->getIsNewObject()) {
+          return null;
+        }
+        return $object->getInteractPolicy();
       case PhabricatorTransactions::TYPE_SPACE:
         if ($this->getIsNewObject()) {
           return null;
···
       case PhabricatorTransactions::TYPE_VIEW_POLICY:
       case PhabricatorTransactions::TYPE_EDIT_POLICY:
       case PhabricatorTransactions::TYPE_JOIN_POLICY:
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
       case PhabricatorTransactions::TYPE_TOKEN:
       case PhabricatorTransactions::TYPE_INLINESTATE:
       case PhabricatorTransactions::TYPE_SUBTYPE:
···
       case PhabricatorTransactions::TYPE_VIEW_POLICY:
       case PhabricatorTransactions::TYPE_EDIT_POLICY:
       case PhabricatorTransactions::TYPE_JOIN_POLICY:
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
       case PhabricatorTransactions::TYPE_SUBSCRIBERS:
       case PhabricatorTransactions::TYPE_INLINESTATE:
       case PhabricatorTransactions::TYPE_EDGE:
···
       case PhabricatorTransactions::TYPE_VIEW_POLICY:
       case PhabricatorTransactions::TYPE_EDIT_POLICY:
       case PhabricatorTransactions::TYPE_JOIN_POLICY:
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
       case PhabricatorTransactions::TYPE_INLINESTATE:
       case PhabricatorTransactions::TYPE_SPACE:
       case PhabricatorTransactions::TYPE_COMMENT:
···
         break;
       case PhabricatorTransactions::TYPE_JOIN_POLICY:
         $object->setJoinPolicy($xaction->getNewValue());
+        break;
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
+        $object->setInteractPolicy($xaction->getNewValue());
         break;
       case PhabricatorTransactions::TYPE_SPACE:
         $object->setSpacePHID($xaction->getNewValue());

src/applications/transactions/storage/PhabricatorApplicationTransaction.php

···
       case PhabricatorTransactions::TYPE_EDIT_POLICY:
       case PhabricatorTransactions::TYPE_VIEW_POLICY:
       case PhabricatorTransactions::TYPE_JOIN_POLICY:
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
         if (!PhabricatorPolicyQuery::isSpecialPolicy($old)) {
           $phids[] = array($old);
         }
···
       case PhabricatorTransactions::TYPE_VIEW_POLICY:
       case PhabricatorTransactions::TYPE_EDIT_POLICY:
       case PhabricatorTransactions::TYPE_JOIN_POLICY:
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
         return 'fa-lock';
       case PhabricatorTransactions::TYPE_EDGE:
         switch ($this->getMetadataValue('edge:type')) {
···
         case PhabricatorTransactions::TYPE_VIEW_POLICY:
         case PhabricatorTransactions::TYPE_EDIT_POLICY:
         case PhabricatorTransactions::TYPE_JOIN_POLICY:
+        case PhabricatorTransactions::TYPE_INTERACT_POLICY:
         case PhabricatorTransactions::TYPE_SPACE:
           break;
         case PhabricatorTransactions::TYPE_SUBTYPE:
···
       case PhabricatorTransactions::TYPE_VIEW_POLICY:
       case PhabricatorTransactions::TYPE_EDIT_POLICY:
       case PhabricatorTransactions::TYPE_JOIN_POLICY:
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
       case PhabricatorTransactions::TYPE_SPACE:
         if ($this->getIsCreateTransaction()) {
           break;
···
         return pht(
           'This %s already has that join policy.',
           $this->getApplicationObjectTypeName());
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
+        return pht(
+          'This %s already has that interact policy.',
+          $this->getApplicationObjectTypeName());
       case PhabricatorTransactions::TYPE_SUBSCRIBERS:
         return pht(
           'All users are already subscribed to this %s.',
···
             $this->renderPolicyName($old, 'old'),
             $this->renderPolicyName($new, 'new'));
         }
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
+        if ($this->getIsCreateTransaction()) {
+          return pht(
+            '%s created this object with interact policy "%s".',
+            $this->renderHandleLink($author_phid),
+            $this->renderPolicyName($new, 'new'));
+        } else {
+          return pht(
+            '%s changed the interact policy from "%s" to "%s".',
+            $this->renderHandleLink($author_phid),
+            $this->renderPolicyName($old, 'old'),
+            $this->renderPolicyName($new, 'new'));
+        }
       case PhabricatorTransactions::TYPE_SPACE:
         if ($this->getIsCreateTransaction()) {
           return pht(
···
           '%s changed the join policy for %s.',
           $this->renderHandleLink($author_phid),
           $this->renderHandleLink($object_phid));
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
+        return pht(
+          '%s changed the interact policy for %s.',
+          $this->renderHandleLink($author_phid),
+          $this->renderHandleLink($object_phid));
       case PhabricatorTransactions::TYPE_SUBSCRIBERS:
         return pht(
           '%s updated subscribers of %s.',
···
       case PhabricatorTransactions::TYPE_VIEW_POLICY:
       case PhabricatorTransactions::TYPE_EDIT_POLICY:
       case PhabricatorTransactions::TYPE_JOIN_POLICY:
+      case PhabricatorTransactions::TYPE_INTERACT_POLICY:
         return pht('Changed Policy');
       case PhabricatorTransactions::TYPE_SUBSCRIBERS:
         return pht('Changed Subscribers');