Use jsonschema to validate configuration

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/config/validator.js b/lib/config/validator.js
new file mode 100644
index 0000000..0ea278f
--- /dev/null
+++ b/lib/config/validator.js
@@ -0,0 +1,31 @@
+var _ = require('lodash');
+var jsonschema = require('jsonschema');
+var jsonSchemaDefaults = require('json-schema-defaults');
+var mergeDefaults = require('merge-defaults');
+
+var schema = require('./schema');
+var error = require('../utils/error');
+
+// Validate a book.json content
+// And return a mix with the default value
+function validate(bookJson) {
+    bookJson = _.cloneDeep(bookJson);
+
+    var v = new jsonschema.Validator();
+    var result = v.validate(bookJson, schema, {
+        propertyName: 'config'
+    });
+
+    // Throw error
+    if (result.errors.length > 0) {
+        throw new error.ConfigurationError(new Error(result.errors[0].stack));
+    }
+
+    // Insert default values
+    var defaults = jsonSchemaDefaults(schema);
+    return mergeDefaults(bookJson, defaults);
+}
+
+module.exports = {
+    validate: validate
+};