1 files changed, 122 insertions, 0 deletions
diff --git a/www/wiki/includes/skins/SkinFallbackTemplate.php b/www/wiki/includes/skins/SkinFallbackTemplate.php
new file mode 100644
index 00000000..bd02fa32
--- /dev/null
+++ b/www/wiki/includes/skins/SkinFallbackTemplate.php
@@ -0,0 +1,122 @@
+<?php
+
+/**
+ * Skin template for the fallback skin.
+ *
+ * The structure is copied from the example skin (mediawiki/skins/Example).
+ *
+ * @since 1.24
+ * @file
+ */
+
+/**
+ * BaseTemplate class for the fallback skin
+ */
+class SkinFallbackTemplate extends BaseTemplate {
+	/**
+	 * @return array
+	 */
+	private function findInstalledSkins() {
+		$styleDirectory = $this->config->get( 'StyleDirectory' );
+		// Get all subdirectories which might contains skins
+		$possibleSkins = scandir( $styleDirectory );
+		$possibleSkins = array_filter( $possibleSkins, function ( $maybeDir ) use ( $styleDirectory ) {
+			return $maybeDir !== '.' && $maybeDir !== '..' && is_dir( "$styleDirectory/$maybeDir" );
+		} );
+
+		// Filter out skins that aren't installed
+		$possibleSkins = array_filter( $possibleSkins, function ( $skinDir ) use ( $styleDirectory ) {
+			return is_file( "$styleDirectory/$skinDir/skin.json" )
+				|| is_file( "$styleDirectory/$skinDir/$skinDir.php" );
+		} );
+
+		return $possibleSkins;
+	}
+
+	/**
+	 * Inform the user why they are seeing this skin.
+	 *
+	 * @return string
+	 */
+	private function buildHelpfulInformationMessage() {
+		$defaultSkin = $this->config->get( 'DefaultSkin' );
+		$installedSkins = $this->findInstalledSkins();
+		$enabledSkins = SkinFactory::getDefaultInstance()->getSkinNames();
+		$enabledSkins = array_change_key_case( $enabledSkins, CASE_LOWER );
+
+		if ( $installedSkins ) {
+			$skinsInstalledText = [];
+			$skinsInstalledSnippet = [];
+
+			foreach ( $installedSkins as $skin ) {
+				$normalizedKey = strtolower( $skin );
+				$isEnabled = array_key_exists( $normalizedKey, $enabledSkins );
+				if ( $isEnabled ) {
+					$skinsInstalledText[] = $this->getMsg( 'default-skin-not-found-row-enabled' )
+						->params( $normalizedKey, $skin )->plain();
+				} else {
+					$skinsInstalledText[] = $this->getMsg( 'default-skin-not-found-row-disabled' )
+						->params( $normalizedKey, $skin )->plain();
+					$skinsInstalledSnippet[] = $this->getSnippetForSkin( $skin );
+				}
+			}
+
+			return $this->getMsg( 'default-skin-not-found' )->params(
+				$defaultSkin,
+				implode( "\n", $skinsInstalledText ),
+				implode( "\n", $skinsInstalledSnippet ) )->numParams(
+					count( $skinsInstalledText ),
+					count( $skinsInstalledSnippet )
+			)->parseAsBlock();
+		} else {
+			return $this->getMsg( 'default-skin-not-found-no-skins' )->params(
+				$defaultSkin
+			)->parseAsBlock();
+		}
+	}
+
+	/**
+	 * Get the appropriate LocalSettings.php snippet to enable the given skin
+	 *
+	 * @param string $skin
+	 * @return string
+	 */
+	private function getSnippetForSkin( $skin ) {
+		global $IP;
+		if ( file_exists( "$IP/skins/$skin/skin.json" ) ) {
+			return "wfLoadSkin( '$skin' );";
+		} else {
+			return "require_once \"\$IP/skins/$skin/$skin.php\";";
+		}
+	}
+
+	/**
+	 * Outputs the entire contents of the page. No navigation (other than search box), just the big
+	 * warning message and page content.
+	 */
+	public function execute() {
+		$this->html( 'headelement' );
+		echo Html::warningBox( $this->buildHelpfulInformationMessage() );
+	?>
+		<form action="<?php $this->text( 'wgScript' ) ?>">
+			<input type="hidden" name="title" value="<?php $this->text( 'searchtitle' ) ?>" />
+			<h3><label for="searchInput"><?php $this->msg( 'search' ) ?></label></h3>
+			<?php echo $this->makeSearchInput( [ "id" => "searchInput" ] ) ?>
+			<?php echo $this->makeSearchButton( 'go' ) ?>
+		</form>
+
+		<div class="mw-body" role="main">
+			<h1 class="firstHeading"><?php $this->html( 'title' ) ?></h1>
+
+			<div class="mw-body-content">
+				<?php $this->html( 'bodytext' ) ?>
+				<?php $this->html( 'catlinks' ) ?>
+			</div>
+		</div>
+
+		<?php $this->printTrail() ?>
+		</body></html>
+
+	<?php
+	}
+}