feat: add help message about AnonymousSchema generated classes

hooks/98_userHelp.js

@@ -0,0 +1,55 @@
+const fs = require('fs');
+
+function checkForAnonymousSchemaObjects(generator) {
+    const modelPath = generator.targetDir + '/src/main/java/com/asyncapi/model';
+    var anonymousPresent = false;
+    fs.readdirSync(modelPath).forEach(file => {
+        if (file.startsWith('AnonymousSchema')) {
+            anonymousPresent = true;
+        }
+    });
+    if (anonymousPresent) {
+        console.log('The AnonymousSchemaN classes were generated in DTO classes.');
+        console.log('This may be a result of explicit schema object definition e.g.');
+        console.log('  schemas:\n' +
+            '    NamedObject:\n' +
+            '      type: object\n' +
+            '        properties:\n' +
+            '          field:\n' +
+            '            type: array\n' +
+            '            items:\n' +
+            '              type: object #Anonymous object\n' +
+            '              properties:\n' +
+            '                field:\n' +
+            '                  type: string');
+        console.log('OR');
+        console.log('  messages:\n' +
+            '    Message:\n' +
+            '      payload:\n' +
+            '        type: object #Anonymous object\n' +
+            '        properties:\n');
+        console.log('Please move such elements to child of "schemas:" to define proper names. ' +
+            'If changing of data model is not possible, you may use "$id" or "x-parser-schema-id" to set name e.g.');
+        console.log(
+            '        properties:\n' +
+            '          field:\n' +
+            '            type: array\n' +
+            '            items:\n' +
+            '              $id: ArrayElement #Name of object\n' +
+            '              type: object\n' +
+            '              properties:\n' +
+            '                field:\n' +
+            '                  type: string');
+    }
+}
+
+module.exports = {
+    /**
+     * Print help information for user if problems encountered during generation.
+     *
+     * @param generator
+     */
+    'generate:after': generator => {
+        checkForAnonymousSchemaObjects(generator);
+    }
+};