Lab #10

tools/my-plugin/src/generators/my-step/generator.ts

@@ -1,17 +1,53 @@
-import { Tree } from '@nx/devkit';
-import { dasherize } from '@nx/devkit/src/utils/string-utils';
+import {
+  applyChangesToString,
+  ChangeType,
+  joinPathFragments,
+  readProjectConfiguration,
+  Tree,
+} from '@nx/devkit';
+import { classify, dasherize } from '@nx/devkit/src/utils/string-utils';
 import { wrapAngularDevkitSchematic } from 'nx/src/adapter/ngcli-adapter';
+import { Identifier, isIdentifier, isVariableStatement } from 'typescript';
+import { getSourceFile } from '../utils/get-source-file';
 import { MyStepGeneratorSchema } from './schema';
 
 export async function myStepGenerator(
   tree: Tree,
   options: MyStepGeneratorSchema
 ) {
-  const componentSchematic = wrapAngularDevkitSchematic('@schematics/angular', 'component');
+  const componentSchematic = wrapAngularDevkitSchematic(
+    '@schematics/angular',
+    'component'
+  );
   await componentSchematic(tree, {
     name: dasherize(options.name),
     project: options.project,
   });
+
+  const projectDir = readProjectConfiguration(tree, options.project).root;
+  const workflowFileName = joinPathFragments(
+    projectDir,
+    'src',
+    'app',
+    'app.workflow.ts'
+  );
+  const sourceFile = getSourceFile(tree, workflowFileName);
+
+  const stepsDeclaration = sourceFile.statements
+    .filter(isVariableStatement)
+    .map((s) => s.declarationList.declarations[0])
+    .filter((d) => isIdentifier(d.name))
+    .find((d) => (d.name as Identifier).escapedText === 'loginSteps');
+
+  const stepToAdd = `"${classify(options.name)}",`;
+  const newContents = applyChangesToString(sourceFile.text, [
+    {
+      type: ChangeType.Insert,
+      index: stepsDeclaration.end - 1,
+      text: stepToAdd
+    },
+  ]);
+  tree.write(workflowFileName, newContents);
 }
 
 export default myStepGenerator;