1 files changed, 34 insertions, 0 deletions
diff --git a/lib/plugins/validatePlugin.js b/lib/plugins/validatePlugin.js
new file mode 100644
index 0000000..4baa911
--- /dev/null
+++ b/lib/plugins/validatePlugin.js
@@ -0,0 +1,34 @@
+var gitbook = require('../gitbook');
+
+var Promise = require('../utils/promise');
+
+/**
+    Validate a plugin
+
+    @param {Plugin}
+    @return {Promise<Plugin>}
+*/
+function validatePlugin(plugin) {
+    var packageInfos = plugin.getPackage();
+
+    var isValid = (
+        plugin.isLoaded() &&
+        packageInfos &&
+        packageInfos.get('name') &&
+        packageInfos.get('engines') &&
+        packageInfos.get('engines').get('gitbook')
+    );
+
+    if (!isValid) {
+        return Promise.reject(new Error('Error loading plugin "' + plugin.getName() + '" at "' + plugin.getPath() + '"'));
+    }
+
+    var engine = packageInfos.get('engines').get('gitbook');
+    if (!gitbook.satisfies(engine)) {
+        return Promise.reject(new Error('GitBook doesn\'t satisfy the requirements of this plugin: ' + engine));
+    }
+
+    return Promise(plugin);
+}
+
+module.exports = validatePlugin;