Add changelog script (https://github.com/woocommerce/woocommerce-blocks/pull/878)

* Add changelog script

* Adapt changelog script to WooCommerce Blocks

* Minor improvements

plugins/woocommerce-blocks/bin/changelog.js

@@ -0,0 +1,140 @@
+#!/usr/bin/env node
+'use strict';
+/* eslint-disable */
+
+const requestPromise = require( 'request-promise' );
+const chalk = require( 'chalk' );
+const octokit = require( '@octokit/rest' )();
+const promptly = require( 'promptly' );
+
+const REPO = 'woocommerce/woocommerce-gutenberg-products-block';
+
+const headers = {
+	'Content-Type': 'application/json;charset=UTF-8',
+	'Authorization': `token ${process.env.GH_API_TOKEN}`,
+	'Accept': 'application/vnd.github.inertia-preview+json',
+	'User-Agent': 'request'
+};
+
+const getPullRequestType = labels => {
+	const typeLabel = labels.find( label => label.name.includes( 'type:' ) );
+	if ( ! typeLabel ) {
+		return 'dev';
+	}
+	return typeLabel.name.replace( 'type: ', '' );
+};
+
+const isCollaborator = async ( username ) => {
+	return requestPromise( {
+		url: `https://api.github.com/orgs/woocommerce/members/${ username }`,
+		headers,
+		resolveWithFullResponse: true
+	} ).then( response => {
+		return response.statusCode === 204;
+	} )
+		.catch( err => {
+			if ( err.statusCode !== 404 ) {
+				console.log( '🤯' );
+				console.log( err.message );
+			}
+		});
+}
+
+const isMergedPullRequest = async ( pullRequestUrl ) => {
+	const options = {
+		url: pullRequestUrl,
+		headers,
+		json: true,
+	};
+	return requestPromise( options )
+		.then( data => data.merged )
+		.catch( err => {
+			console.log( '🤯' );
+			console.log( err.message );
+		});
+}
+
+const getEntry = async ( data ) => {
+	if ( ! data.pull_request ) {
+		return;
+	}
+
+	const isMerged = await isMergedPullRequest( data.pull_request.url );
+	const skipChangelog = data.labels.find( label => label.name === 'skip-changelog' );
+
+	if ( ! isMerged || skipChangelog ) {
+		return;
+	}
+
+	const collaborator = await isCollaborator( data.user.login );
+	const type = getPullRequestType( data.labels );
+	const authorTag = collaborator ? '' : `👏 @${ data.user.login }`;
+	let title;
+	if ( /### Changelog\r\n\r\n> /.test( data.body ) ) {
+		const bodyParts = data.body.split( '### Changelog\r\n\r\n> ' );
+		const note = bodyParts[ bodyParts.length - 1 ];
+		title = note
+			// Remove comment prompt
+			.replace( /<!---(.*)--->/gm, '' )
+			// Remove new lines and whitespace
+			.trim();
+		if ( ! title.length ) {
+			title = `${ type }: ${ data.title }`;
+		}
+	} else {
+		title = `${ type }: ${ data.title }`;
+	}
+	return `- ${ title } #${ data.number } ${ authorTag }`;
+};
+
+const makeChangelog = async version => {
+	const results = await octokit.search.issuesAndPullRequests( {
+		q: `milestone:${ version }+type:pr+repo:${ REPO }`,
+		sort: 'reactions',
+		per_page: 100,
+	} );
+	const entries = await Promise.all( results.data.items.map( async pr => await getEntry( pr ) ) );
+
+	if ( ! entries || ! entries.length ) {
+		console.log( chalk.yellow( "This version doesn't have any associated PR." ) );
+		return;
+	}
+
+	const filteredEntries = entries.filter( Boolean );
+
+	if ( ! entries || ! entries.length ) {
+		console.log( chalk.yellow( "None of the PRs of this version are eligible for the changelog." ) );
+		return;
+	}
+
+	console.log( filteredEntries.join( '\n' ) );
+};
+
+( async () => {
+	console.log( chalk.yellow( 'This program requires an api token. You can create one here: ' ) + 'https://github.com/settings/tokens' );
+	console.log( '' );
+	console.log( chalk.yellow( 'Token scope will require read permissions on public_repo, admin:org, and user.' ) );
+	console.log( '' );
+	console.log( chalk.yellow( 'Export the token as variable called GH_API_TOKEN from your bash profile.' ) );
+	console.log( '' );
+
+	const ready = await promptly.confirm( 'Are you ready to continue? ' );
+
+	if ( ready ) {
+		console.log( '' );
+		console.log( chalk.yellow( 'In order to generate the changelog, you will have to provide a version number to retrieve the PRs from.' ) );
+		console.log( '' );
+		console.log( chalk.yellow( 'Write it as it appears in the milestones page: ' ) + 'https://github.com/woocommerce/woocommerce-gutenberg-products-block/milestones' );
+		console.log( '' );
+		const version = await promptly.prompt( 'Version number: ' );
+		console.log( '' );
+		console.log( chalk.green( 'Here is the generated changelog. Be sure to remove entries ' +
+			'not intended for a WooCommerce Blocks release.' ) );
+		console.log( '' );
+		makeChangelog( version );
+	} else {
+		console.log( '' );
+		console.log( chalk.yellow( 'Ok, see you soon.' ) );
+		console.log( '' );
+	}
+} )();

plugins/woocommerce-blocks/package.json

@@ -33,11 +33,13 @@
     "test:help": "wp-scripts test-unit-js --help",
     "test:update": "wp-scripts test-unit-js --updateSnapshot --config tests/js/jest.config.json",
     "test:watch": "npm run test -- --watch",
-    "size-check": "bundlesize"
+    "size-check": "bundlesize",
+    "changelog": "node ./bin/changelog.js "
   },
   "devDependencies": {
     "@babel/core": "7.5.5",
     "@woocommerce/navigation": "2.1.1",
+    "@octokit/rest": "^16.28.7",
     "@wordpress/babel-preset-default": "4.4.0",
     "@wordpress/blocks": "6.5.0",
     "@wordpress/browserslist-config": "2.6.0",
@@ -81,7 +83,9 @@
     "po2json": "1.0.0-alpha",
     "postcss-loader": "3.0.0",
     "progress-bar-webpack-plugin": "1.12.1",
+    "promptly": "^3.0.3",
     "react-test-renderer": "16.8.6",
+    "request-promise": "^4.2.4",
     "rimraf": "2.7.1",
     "sass-loader": "7.2.0",
     "style-loader": "1.0.0",