Decouple validation

Decouple validation

lib/inputValidation.js

@@ -0,0 +1,54 @@
+module.exports = {
+
+  /**
+   * Validate Spec to check if some of the required fields are present.
+   *
+   * @param {Object} spec OpenAPI spec
+   * @return {Object} Validation result
+   */
+  validateSpec: function (spec) {
+
+    // Checking for the all the required properties in the specification
+    if (!spec.hasOwnProperty('openapi')) {
+      return {
+        result: false,
+        reason: 'Specification must contain a semantic version number of the OAS specification'
+      };
+    }
+
+    if (!spec.hasOwnProperty('paths')) {
+      return {
+        result: false,
+        reason: 'Specification must contain Paths Object for the available operational paths'
+      };
+    }
+
+    if (!spec.hasOwnProperty('info')) {
+      return {
+        result: false,
+        reason: 'Specification must contain an Info Object for the meta-data of the API'
+      };
+    }
+    if (!spec.info.hasOwnProperty('$ref')) {
+      if (!spec.info.hasOwnProperty('title')) {
+        return {
+          result: false,
+          reason: 'Specification must contain a title in order to generate a collection'
+        };
+      }
+
+      if (!spec.info.hasOwnProperty('version')) {
+        return {
+          result: false,
+          reason: 'Specification must contain a semantic version number of the API in the Info Object'
+        };
+      }
+    }
+
+    // Valid specification
+    return {
+      result: true,
+      openapi: spec
+    };
+  }
+};