1 files changed, 90 insertions, 0 deletions
diff --git a/MLEB/Translate/src/MessageBundleTranslation/MessageBundleContent.php b/MLEB/Translate/src/MessageBundleTranslation/MessageBundleContent.php
new file mode 100644
index 00000000..af843380
--- /dev/null
+++ b/MLEB/Translate/src/MessageBundleTranslation/MessageBundleContent.php
@@ -0,0 +1,90 @@
+<?php
+declare( strict_types = 1 );
+
+namespace MediaWiki\Extension\Translate\MessageBundleTranslation;
+
+use JsonContent;
+use Status;
+use User;
+use WikiPage;
+
+/**
+ * @author Niklas Laxström
+ * @license GPL-2.0-or-later
+ * @since 2021.05
+ */
+class MessageBundleContent extends JsonContent {
+	public const CONTENT_MODEL_ID = 'translate-messagebundle';
+
+	public function __construct( $text, $modelId = self::CONTENT_MODEL_ID ) {
+		parent::__construct( $text, $modelId );
+	}
+
+	public function isValid(): bool {
+		try {
+			return parent::isValid() && $this->validate();
+		} catch ( MalformedBundle $e ) {
+			return false;
+		}
+	}
+
+	/** @throws MalformedBundle */
+	public function validate(): bool {
+		$data = json_decode( $this->getText(), true );
+
+		// Crude check that we have an associative array (or empty array)
+		if ( !is_array( $data ) || ( $data !== [] && array_values( $data ) === $data ) ) {
+			throw new MalformedBundle(
+				'translate-messagebundle-error-invalid-array',
+				[ gettype( $data ) ]
+			);
+		}
+
+		foreach ( $data as $key => $value ) {
+			if ( $key === '' ) {
+				throw new MalformedBundle( 'translate-messagebundle-error-key-empty' );
+			}
+
+			if ( strlen( $key ) > 100 ) {
+				throw new MalformedBundle(
+					'translate-messagebundle-error-key-too-long',
+					[ $key ]
+				);
+			}
+
+			if ( !preg_match( '/^[a-zA-Z0-9-_.]+$/', $key ) ) {
+				throw new MalformedBundle(
+					'translate-messagebundle-error-key-invalid-characters',
+					[ $key ]
+				);
+			}
+
+			if ( !is_string( $value ) ) {
+				throw new MalformedBundle(
+					'translate-messagebundle-error-invalid-value',
+					[ $key ]
+				);
+			}
+
+			if ( trim( $value ) === '' ) {
+				throw new MalformedBundle(
+					'translate-messagebundle-error-empty-value',
+					[ $key ]
+				);
+			}
+		}
+
+		return true;
+	}
+
+	public function prepareSave( WikiPage $page, $flags, $parentRevId, User $user ) {
+		// This will give an informative error message when trying to change the content model
+		try {
+			$this->validate();
+			return Status::newGood();
+		} catch ( MalformedBundle $e ) {
+			// XXX: We have no context source nor is there Message::messageParam :(
+			return Status::newFatal( 'translate-messagebundle-validation-error', wfMessage( $e ) );
+		}
+	}
+}