createCourseplayRelease.js

// Webhook for the Courseplay GitHub repository.
// 
// On each commit create a deployable Courseplay zip file and
// upload it to GitHub as a release.
//
const secret = process.env.SECRET
let privateKey = process.env.PRIVATE_KEY

const fs = require('fs')

try {
	privateKey = fs.readFileSync('courseplay-release-creator-private-key.pem')
	console.log('Read private key from file.')
} catch (e) {
	console.log('No private key file could be read')
}

const {App} =  require('@octokit/app')
const {createNodeMiddleware} =  require('@octokit/webhooks')
const app = new App({appId: "115455", privateKey: privateKey, webhooks: {secret}})

const http = require('http');
const execSync = require('child_process').execSync;

async function createRelease(octokit, tag, name, description, sha, repo, filename) {
	let result = await octokit.request('POST /repos/Courseplay/' + repo + '/releases', {
		tag_name: tag,
		//	draft : true,
		prerelease: false,
		name: name,
		body: description,
		target_commitish: sha
	});

	const stats = fs.statSync('/tmp/' + filename);
	const zipFile = fs.readFileSync('/tmp/' + filename)

 	result = await octokit.request('POST ' + result.data.upload_url, {
		headers: {
			'content-length' : stats.size,
			'content-type' : 'application/zip'
		},
		data: zipFile,
		name: filename
		})
	
	console.log(result)
}

app.webhooks.on('push', ({octokit, payload}) => {
    let branch = payload.ref.replace('refs/heads/', '')

    console.log('Push event for ' + payload.ref);

	let zipFileName, releasePrefix;
	if (payload.repository.name === 'courseplay') {
		zipFileName = 'FS19_Courseplay.zip'
		releasePrefix = 'Courseplay for FS19 v'
	} else if (payload.repository.name === 'Courseplay_FS22') {
		zipFileName = 'FS22_Courseplay.zip'
		releasePrefix = 'Courseplay for FS22 v'
	} else if (payload.repository.name === 'Courseplay_FS25') {
		zipFileName = 'FS25_Courseplay.zip'
		releasePrefix = 'Courseplay for FS25 v'
	} else {
		console.log('Not creating release for ' + payload.repository.name)
		return
	}

    if (branch !== 'master' && branch !== 'main' && branch !== 'ModHubFS19') {
    	console.log('Not creating release from ' + payload.ref + ', only from master, main and ModHubFS19.')
		return
    }

    execSync(__dirname + '/packCourseplay ' + branch + ' ' + __dirname + '/exclude.lst ' + zipFileName + ' ' + payload.repository.name);

    fs.readFile('/tmp/courseplay_version', (err, data) => { 
		if (err) throw err;

		const courseplayVersion = data.toString().replace(/^\s+|\s+$/g, ''); //remove newlines

		console.log('Creating release ' + courseplayVersion + ' at ' + payload.repository.name);
		createRelease(octokit, courseplayVersion, releasePrefix + courseplayVersion,
			payload.head_commit.message, payload.head_commit.id, payload.repository.name, zipFileName)
			.then(() => {
				console.log('Release created')
			})
			.catch(e => {
				// most likely the release already exists, this was just a subsequent push to master
				console.log('Release not created, error: ' + e);
			});
	})
})

http.createServer(createNodeMiddleware(app.webhooks)).listen(8080);