feat(schematics): add first migration

Author: dherges

package.json

@@ -77,6 +77,7 @@
     "@ngrx/schematics": "7.4.0",
     "@nrwl/builders": "7.7.2",
     "@nrwl/schematics": "7.7.2",
+    "@types/fs-extra": "^5.0.5",
     "@types/jasmine": "~3.3.0",
     "@types/jasminewd2": "~2.0.3",
     "@types/jest": "24.0.11",

packages/schematics/DEVELOP.md

@@ -0,0 +1,34 @@
+# Getting Started With Schematics
+
+This repository is a basic Schematic implementation that serves as a starting point to create and publish Schematics to NPM.
+
+### Testing
+
+To test locally, install `@angular-devkit/schematics-cli` globally and use the `schematics` command line tool. That tool acts the same as the `generate` command of the Angular CLI, but also has a debug mode.
+
+Check the documentation with
+```bash
+schematics --help
+```
+
+### Unit Testing
+
+`npm run test` will run the unit tests, using Jasmine as a runner and test framework.
+
+### Publishing
+
+To publish, simply do:
+
+```bash
+npm run build
+npm publish
+```
+
+That's it!
+ 
+
+#### Futher Reading
+
+- https://brianflove.com/2018/12/11/angular-schematics-tutorial/
+- `ng update --registry http://myregistry.org`: https://github.com/angular/angular-cli/issues/10624
+- ng update command: https://github.com/angular/angular-cli/blob/master/docs/specifications/update.md#library-developers

packages/schematics/README.md

@@ -1,34 +1,9 @@
-# Getting Started With Schematics
+@sparkles/schematics
+====================
 
-This repository is a basic Schematic implementation that serves as a starting point to create and publish Schematics to NPM.
-
-### Testing
-
-To test locally, install `@angular-devkit/schematics-cli` globally and use the `schematics` command line tool. That tool acts the same as the `generate` command of the Angular CLI, but also has a debug mode.
-
-Check the documentation with
 ```bash
-schematics --help
-```
-
-### Unit Testing
-
-`npm run test` will run the unit tests, using Jasmine as a runner and test framework.
+$ ng add @sparkles/schematics
 
-### Publishing
-
-To publish, simply do:
-
-```bash
-npm run build
-npm publish
 ```
 
-That's it!
- 
-
-#### Futher Reading
-
-- https://brianflove.com/2018/12/11/angular-schematics-tutorial/
-- `ng update --registry http://myregistry.org`: https://github.com/angular/angular-cli/issues/10624
-- ng update command: https://github.com/angular/angular-cli/blob/master/docs/specifications/update.md#library-developers
+https://github.com/nrwl/nx/blob/master/packages/schematics/migrations/update-7-0-0/update-7-0-0.ts

packages/schematics/package.json

@@ -24,11 +24,5 @@
     }
   },
   "dependencies": {
-    "@angular-devkit/core": "^7.3.8",
-    "@angular-devkit/schematics": "^7.3.8",
-    "@types/jasmine": "^3.0.0",
-    "@types/node": "^8.0.31",
-    "jasmine": "^3.0.0",
-    "typescript": "~3.2.2"
   }
 }

packages/schematics/src/collection.json

@@ -1,5 +1,6 @@
 {
   "$schema": "../../../node_modules/@angular-devkit/schematics/collection-schema.json",
+  "extends": "@nrwl/schematics",
   "schematics": {
     "ng-add": {
       "description": "Adds Sparkles to the application",

packages/schematics/src/migration.json

@@ -4,7 +4,7 @@
     "migration-v1": {
       "version": "1",
       "description": "Updates Sparkles to v1",
-      "factory": "./ng-update/index#updateToV1"
+      "factory": "./ng-update/index#migrateToV1"
     }
   }
 }

packages/schematics/src/ng-add/index.ts

@@ -1,11 +1,16 @@
-import { Rule, SchematicContext, Tree } from '@angular-devkit/schematics';
+import { Rule, SchematicContext, Tree, externalSchematic, chain } from '@angular-devkit/schematics';
+
+const printHelloWorld: Rule = (tree: Tree, context: SchematicContext) => {
+  console.log("Hello world!");
+
+  return tree;
+};
 
 // You don't have to export the function as default. You can also have more than one rule factory
 // per file.
 export default function schematics(_options: any): Rule {
-  return (tree: Tree, _context: SchematicContext) => {
-    console.log("Hello world!");
-
-    return tree;
-  };
+  return chain([
+    printHelloWorld,
+    externalSchematic('@schematics/update', '@angular/cli', {})
+  ]);
 }

packages/schematics/src/ng-update/index.ts

@@ -1,10 +1 @@
-import { Rule, SchematicContext, Tree } from '@angular-devkit/schematics';
-import { updateJsonInTree } from '@nrwl/schematics/src/utils/ast-utils';
-
-export function updateToV1(): Rule {
-  return (tree: Tree, _context: SchematicContext) => {
-    console.log("Updating to v1!");
-
-    return tree;
-  };
-}
+export { migrateToV1 } from './migration-v1/migration-v1';

packages/schematics/src/ng-update/migration-v1/migration-v1.ts

@@ -0,0 +1,30 @@
+import { Rule, SchematicContext, Tree, externalSchematic, chain } from '@angular-devkit/schematics';
+import { readJsonInTree } from '../../utils/json';
+
+const updateOrAddNx: Rule = (tree: Tree, context: SchematicContext) => {
+  const packageJson = readJsonInTree(tree, 'package.json');
+
+  const inDevDependencies = packageJson['devDependencies'] ? packageJson['devDependencies']['@nrwl/schematics'] : null;
+  const inDependencies = packageJson['devDependencies'] ? packageJson['devDependencies']['@nrwl/schematics'] : null;
+  if (inDevDependencies || inDependencies) {
+    const fromVersion = inDevDependencies || inDependencies;
+    const toVersion = '7.7.0';
+    context.logger.info(`Migrating @nrwl/schematis from already installed version=${fromVersion} to ${toVersion}`);
+
+    return externalSchematic('@schematics/update', 'update', {
+      packages: ['@nrwl/schematics'],
+      from: fromVersion,
+      to: toVersion,
+      force: true
+    })
+  } else {
+    // ng add @nrwl/schematics
+    return externalSchematic('@nrwl/schematics', 'ng-add', {});
+  }
+};
+
+export function migrateToV1(_options: any): Rule {
+  return chain([
+    updateOrAddNx
+  ]);
+}

packages/schematics/src/utils/files.ts

@@ -0,0 +1,8 @@
+import * as fs from 'fs';
+import * as path from 'path';
+import { ensureDirSync } from 'fs-extra';
+
+export function writeToFile(filePath: string, str: string) {
+  ensureDirSync(path.dirname(filePath));
+  fs.writeFileSync(filePath, str);
+}