fix(installer): gate install-success on real verification

Joomla installers keep running after a failed sub-step, so a postflight
"installed successfully" / next-steps message can lie. Gate the success
path in both installer scripts.

Package (source/script.php): postflight now verifies every child extension
declared in the package manifest actually registered in #__extensions
(element + type, plus folder for plugins). If any are missing it enqueues
an error listing them and returns before the licence notice. Download-key
restore and plugin-enable housekeeping still run unconditionally. Check
fails open on any error.

Component (source/packages/com_mokoog/script.php): install() now parses the
installed SQL (JPATH_ADMINISTRATOR/components/com_mokoog/sql/install.mysql.sql)
for CREATE TABLE declarations and verifies each exists (prefix-substituted,
case-insensitive) before echoing the success message. Fails open if the SQL
is unreadable.

Claude-Session: https://claude.ai/code/session_01MrxXW9iyuDda5yDZrjZMbF

source/packages/com_mokoog/script.php

@@ -10,6 +10,7 @@
 
 defined('_JEXEC') or die;
 
+use Joomla\CMS\Factory;
 use Joomla\CMS\Installer\InstallerAdapter;
 
 class Com_MokoOGInstallerScript
@@ -23,6 +24,25 @@ class Com_MokoOGInstallerScript
      */
     public function install(InstallerAdapter $parent): void
     {
+        // Be smart: verify EVERY table the component's own install SQL declares is
+        // actually present. If any are missing the install did not complete — say
+        // so instead of showing "installed successfully".
+        $missing = $this->missingTables();
+
+        if ($missing !== []) {
+            $detail = count($missing) > 6
+                ? count($missing) . ' expected database tables are missing'
+                : 'missing tables: ' . htmlspecialchars(implode(', ', $missing), ENT_QUOTES, 'UTF-8');
+
+            Factory::getApplication()->enqueueMessage(
+                '<strong>MokoSuiteOpenGraph did not install correctly.</strong> ' . $detail
+                . ' — review the errors above, then reinstall.',
+                'error'
+            );
+
+            return;
+        }
+
         echo '<p>MokoSuiteOpenGraph component installed successfully.</p>';
     }
 
@@ -37,4 +57,46 @@ class Com_MokoOGInstallerScript
     {
         echo '<p>MokoSuiteOpenGraph component updated successfully.</p>';
     }
+
+    /**
+     * Smart schema check: parse the component's own installed install SQL for every
+     * CREATE TABLE, then return the ones missing from the database. An empty array
+     * means the full schema installed. Fails open (returns []) if the SQL can't be
+     * read, so a good install is never flagged as failed.
+     *
+     * @return  string[]  Names (without the #__ prefix) of missing tables.
+     */
+    private function missingTables(): array
+    {
+        try {
+            $sqlFile = JPATH_ADMINISTRATOR . '/components/com_mokoog/sql/install.mysql.sql';
+
+            if (!is_file($sqlFile)) {
+                return [];
+            }
+
+            $sql = file_get_contents($sqlFile);
+
+            if ($sql === false
+                || !preg_match_all('/CREATE\s+TABLE\s+(?:IF\s+NOT\s+EXISTS\s+)?[`"\']?(#__[A-Za-z0-9_]+)/i', $sql, $m)) {
+                return [];
+            }
+
+            $db      = Factory::getDbo();
+            $prefix  = strtolower($db->getPrefix());
+            $have    = array_map('strtolower', $db->getTableList());
+            $missing = [];
+
+            foreach (array_unique($m[1]) as $decl) {
+                $bare = substr($decl, 3);                    // strip "#__"
+                if (!in_array($prefix . strtolower($bare), $have, true)) {
+                    $missing[] = $bare;
+                }
+            }
+
+            return $missing;
+        } catch (\Throwable $e) {
+            return [];
+        }
+    }
 }

source/script.php

@@ -50,9 +50,10 @@ class Pkg_MokoOGInstallerScript
 
 	public function postflight(string $type, InstallerAdapter $parent): void
 	{
+		// The download key must be restored regardless of the install outcome.
 		$this->restoreDownloadKey();
-		$this->warnMissingLicenseKey();
 
+		// Housekeeping: ensure the bundled plugins are enabled after a fresh install.
 		if ($type === 'install')
 		{
 			$db = Factory::getContainer()->get(\Joomla\Database\DatabaseInterface::class);
@@ -69,6 +70,97 @@ class Pkg_MokoOGInstallerScript
 				)->execute();
 			}
 		}
+
+		// Be smart: only run the success path (the licence notice, which implies a
+		// completed install) when every child extension declared in the package
+		// manifest actually registered. If any are missing, the package did NOT
+		// install successfully — surface that instead of implying success.
+		$missing = $this->missingChildExtensions($parent);
+
+		if ($missing !== [])
+		{
+			Factory::getApplication()->enqueueMessage(
+				'<strong>MokoSuiteOpenGraph did not install completely.</strong> '
+				. 'The following extension(s) failed to install: ' . htmlspecialchars(implode(', ', $missing), ENT_QUOTES, 'UTF-8') . '. '
+				. 'Resolve the errors shown above, then uninstall and reinstall the package.',
+				'error'
+			);
+
+			return;
+		}
+
+		$this->warnMissingLicenseKey();
+	}
+
+	/**
+	 * Compare the child extensions the package manifest declares against what is
+	 * actually registered in #__extensions after the install/update. Returns the
+	 * label of each declared extension that is missing (i.e. failed to install);
+	 * an empty array means every child installed and the package succeeded.
+	 *
+	 * Fails open: any error returns [] so a query problem can never turn a good
+	 * install into a false "did not install completely" warning.
+	 *
+	 * @param   InstallerAdapter  $parent  Installer adapter
+	 *
+	 * @return  string[]
+	 */
+	private function missingChildExtensions(InstallerAdapter $parent): array
+	{
+		$missing = [];
+
+		try
+		{
+			$manifest = $parent->getParent()->getManifest();
+
+			if (!$manifest || !isset($manifest->files) || !isset($manifest->files->file))
+			{
+				return [];
+			}
+
+			$db = Factory::getContainer()->get(\Joomla\Database\DatabaseInterface::class);
+
+			foreach ($manifest->files->file as $file)
+			{
+				$childType = (string) $file['type'];
+				$element   = (string) $file['id'];
+				$group     = (string) $file['group'];
+
+				if ($element === '')
+				{
+					continue;
+				}
+
+				$query = $db->getQuery(true)
+					->select('COUNT(*)')
+					->from($db->quoteName('#__extensions'))
+					->where($db->quoteName('element') . ' = ' . $db->quote($element));
+
+				if ($childType !== '')
+				{
+					$query->where($db->quoteName('type') . ' = ' . $db->quote($childType));
+				}
+
+				// Plugins are only unique by element + folder (the manifest "group").
+				if ($childType === 'plugin' && $group !== '')
+				{
+					$query->where($db->quoteName('folder') . ' = ' . $db->quote($group));
+				}
+
+				$db->setQuery($query);
+
+				if ((int) $db->loadResult() === 0)
+				{
+					$missing[] = $element . ($group !== '' ? ' (' . $group . ')' : '');
+				}
+			}
+		}
+		catch (\Throwable $e)
+		{
+			return [];
+		}
+
+		return $missing;
 	}