Introduce processor

src/server/api/service/github.ts

@@ -0,0 +1,124 @@
+import * as EventEmitter from 'events';
+import * as express from 'express';
+const crypto = require('crypto');
+import User from '../models/user';
+import config from '../../../conf';
+import queue from '../../../queue';
+
+module.exports = async (app: express.Application) => {
+	if (config.github_bot == null) return;
+
+	const bot = await User.findOne({
+		username_lower: config.github_bot.username.toLowerCase()
+	});
+
+	if (bot == null) {
+		console.warn(`GitHub hook bot specified, but not found: @${config.github_bot.username}`);
+		return;
+	}
+
+	const post = text => require('../endpoints/posts/create')({ text }, bot);
+
+	const handler = new EventEmitter();
+
+	app.post('/hooks/github', (req, res, next) => {
+		// req.headers['x-hub-signature'] および
+		// req.headers['x-github-event'] は常に string ですが、型定義の都合上
+		// string | string[] になっているので string を明示しています
+//		if ((new Buffer(req.headers['x-hub-signature'] as string)).equals(new Buffer(`sha1=${crypto.createHmac('sha1', config.github_bot.hook_secret).update(JSON.stringify(req.body)).digest('hex')}`))) {
+			handler.emit(req.headers['x-github-event'] as string, req.body);
+			res.sendStatus(200);
+//		} else {
+//			res.sendStatus(400);
+//		}
+	});
+
+	handler.on('status', event => {
+		const state = event.state;
+		switch (state) {
+			case 'error':
+			case 'failure':
+				const commit = event.commit;
+				const parent = commit.parents[0];
+
+				queue.create('gitHubFailureReport', {
+					userId: bot._id,
+					parentUrl: parent.url,
+					htmlUrl: commit.html_url,
+					message: commit.commit.message,
+				}).save();
+				break;
+		}
+	});
+
+	handler.on('push', event => {
+		const ref = event.ref;
+		switch (ref) {
+			case 'refs/heads/master':
+				const pusher = event.pusher;
+				const compare = event.compare;
+				const commits = event.commits;
+				post([
+					`Pushed by **${pusher.name}** with ?[${commits.length} commit${commits.length > 1 ? 's' : ''}](${compare}):`,
+					commits.reverse().map(commit => `・[?[${commit.id.substr(0, 7)}](${commit.url})] ${commit.message.split('\n')[0]}`).join('\n'),
+				].join('\n'));
+				break;
+			case 'refs/heads/release':
+				const commit = event.commits[0];
+				post(`RELEASED: ${commit.message}`);
+				break;
+		}
+	});
+
+	handler.on('issues', event => {
+		const issue = event.issue;
+		const action = event.action;
+		let title: string;
+		switch (action) {
+			case 'opened': title = 'Issue opened'; break;
+			case 'closed': title = 'Issue closed'; break;
+			case 'reopened': title = 'Issue reopened'; break;
+			default: return;
+		}
+		post(`${title}: <${issue.number}>「${issue.title}」\n${issue.html_url}`);
+	});
+
+	handler.on('issue_comment', event => {
+		const issue = event.issue;
+		const comment = event.comment;
+		const action = event.action;
+		let text: string;
+		switch (action) {
+			case 'created': text = `Commented to「${issue.title}」:${comment.user.login}「${comment.body}」\n${comment.html_url}`; break;
+			default: return;
+		}
+		post(text);
+	});
+
+	handler.on('watch', event => {
+		const sender = event.sender;
+		post(`⭐️ Starred by **${sender.login}** ⭐️`);
+	});
+
+	handler.on('fork', event => {
+		const repo = event.forkee;
+		post(`🍴 Forked:\n${repo.html_url} 🍴`);
+	});
+
+	handler.on('pull_request', event => {
+		const pr = event.pull_request;
+		const action = event.action;
+		let text: string;
+		switch (action) {
+			case 'opened': text = `New Pull Request:「${pr.title}」\n${pr.html_url}`; break;
+			case 'reopened': text = `Pull Request Reopened:「${pr.title}」\n${pr.html_url}`; break;
+			case 'closed':
+				text = pr.merged
+					? `Pull Request Merged!:「${pr.title}」\n${pr.html_url}`
+					: `Pull Request Closed:「${pr.title}」\n${pr.html_url}`;
+				break;
+			default: return;
+		}
+		post(text);
+	});
+};