Add support to beautify the json asyncapi document

src/commands/pretty.ts

@@ -5,7 +5,9 @@ import Command from '../core/base';
 import { load } from '../core/models/SpecificationFile';
 import { ValidationError } from '../core/errors/validation-error';
 import { prettyFlags } from '../core/flags/pretty.flags';
-
+import {
+  retrieveFileFormat,
+} from '../core/models/SpecificationFile';
 export default class Pretty extends Command {
   static readonly description = 'Format AsyncAPI specification file';
 
@@ -40,11 +42,18 @@ export default class Pretty extends Command {
     let formatted: string;
 
     try {
-      const yamlDoc = yaml.parseDocument(content);
-
-      formatted = yamlDoc.toString({
-        lineWidth: 0, 
-      });
+      const fileFormat = retrieveFileFormat(this.specFile.text());
+      if (fileFormat === 'yaml') {
+        const yamlDoc = yaml.parseDocument(content);
+        formatted = yamlDoc.toString({
+          lineWidth: 0, 
+        });
+      } else if (fileFormat === 'json') {
+        const jsonObj = JSON.parse(content); 
+        formatted = JSON.stringify(jsonObj, null, 2); 
+      } else {
+        throw new Error('Unsupported file format');
+      }
     } catch (err) {
       this.error(`Error formatting file: ${err}`);
     }

test/fixtures/badFormatAsyncapi.json

@@ -0,0 +1,38 @@
+{
+    "asyncapi": "2.2.0",
+         "info": {
+      "title": "Account Service",
+      "version": "1.0.0",
+      "description": 
+         "This service is in charge of processing user signups"
+    },
+         "channels": {
+      "user/signedup": {
+            "subscribe": {
+          "message": {
+            "$ref": "#/components/messages/UserSignedUp"
+          }
+        }
+      }
+    },
+    "components": {
+      "messages": {
+        "UserSignedUp": {
+          "payload": {
+            "type": "object",
+            "properties": {
+              "displayName": {
+                "type": "string",
+                "description": "Name of the user"
+              },
+              "email": {
+                "type": "string",
+                "format": "email",
+                "description": "Email of the user"
+              }
+            }
+          }
+        }
+      }
+    }
+  }

test/integration/pretty.test.ts

@@ -5,6 +5,7 @@ import { expect } from '@oclif/test';
 const testHelper = new TestHelper();
 const badFormatPath = './test/fixtures/asyncapi_v1.yml';
 const validFormatPath = './test/fixtures/asyncapiValid_v1.yml';
+const badFormatPathJson = './test/fixtures/badFormatAsyncapi.json';
 
 describe('pretty', () => {
   describe('with file paths', () => {
@@ -47,5 +48,17 @@ describe('pretty', () => {
         expect(ctx.stderr).to.equal('');
         done();
       });
+
+    test
+      .stderr()
+      .stdout()
+      .command(['pretty', badFormatPathJson])
+      .it('should log the information file has been beautified json file', (ctx, done) => {
+        expect(ctx.stdout).to.contain(
+          `Asyncapi document ${badFormatPathJson} has been beautified in-place`,
+        );
+        expect(ctx.stderr).to.equal('');
+        done();
+      });
   });
 });