V2 (#111)

Just v2

src/routes/webhooks/github/events.ts

@@ -0,0 +1,177 @@
+import { getDomain, getTeam, getUserDetails, removeDestinationDocker } from '$lib/common';
+import * as db from '$lib/database';
+import type { RequestHandler } from '@sveltejs/kit';
+import cuid from 'cuid';
+import crypto from 'crypto';
+import { buildQueue } from '$lib/queues';
+import { checkContainer, removeProxyConfiguration } from '$lib/haproxy';
+
+export const options: RequestHandler = async () => {
+	return {
+		status: 200,
+		headers: {
+			'Access-Control-Allow-Origin': '*',
+			'Access-Control-Allow-Headers': 'Content-Type, Authorization',
+			'Access-Control-Allow-Methods': 'GET, POST, PUT, DELETE, OPTIONS'
+		}
+	};
+};
+
+export const post: RequestHandler = async (event) => {
+	try {
+		const buildId = cuid();
+		const allowedGithubEvents = ['push', 'pull_request'];
+		const allowedActions = ['opened', 'reopened', 'synchronize', 'closed'];
+		const githubEvent = event.request.headers.get('x-github-event').toLowerCase();
+		const githubSignature = event.request.headers.get('x-hub-signature-256').toLowerCase();
+		if (!allowedGithubEvents.includes(githubEvent)) {
+			return {
+				status: 500,
+				body: {
+					message: 'Event not allowed.'
+				}
+			};
+		}
+		let repository, projectId, branch;
+		const body = await event.request.json();
+
+		if (githubEvent === 'push') {
+			repository = body.repository;
+			projectId = repository.id;
+			branch = body.ref.split('/')[2];
+		} else if (githubEvent === 'pull_request') {
+			repository = body.pull_request.head.repo;
+			projectId = repository.id;
+			branch = body.pull_request.head.ref.split('/')[2];
+		}
+
+		const applicationFound = await db.getApplicationWebhook({ projectId, branch });
+		if (applicationFound) {
+			const webhookSecret = applicationFound.gitSource.githubApp.webhookSecret;
+			const hmac = crypto.createHmac('sha256', webhookSecret);
+			const digest = Buffer.from(
+				'sha256=' + hmac.update(JSON.stringify(body)).digest('hex'),
+				'utf8'
+			);
+			const checksum = Buffer.from(githubSignature, 'utf8');
+			if (checksum.length !== digest.length || !crypto.timingSafeEqual(digest, checksum)) {
+				return {
+					status: 500,
+					body: {
+						message: 'SHA256 checksum failed. Are you doing something fishy?'
+					}
+				};
+			}
+			if (githubEvent === 'push') {
+				if (!applicationFound.configHash) {
+					const configHash = crypto
+						.createHash('sha256')
+						.update(
+							JSON.stringify({
+								buildPack: applicationFound.buildPack,
+								port: applicationFound.port,
+								installCommand: applicationFound.installCommand,
+								buildCommand: applicationFound.buildCommand,
+								startCommand: applicationFound.startCommand
+							})
+						)
+						.digest('hex');
+					await db.prisma.application.updateMany({
+						where: { branch, projectId },
+						data: { configHash }
+					});
+				}
+				await buildQueue.add(buildId, {
+					build_id: buildId,
+					type: 'webhook_commit',
+					...applicationFound
+				});
+				return {
+					status: 200,
+					body: {
+						message: 'Queued. Thank you!'
+					}
+				};
+			} else if (githubEvent === 'pull_request') {
+				const pullmergeRequestId = body.number;
+				const pullmergeRequestAction = body.action;
+				const sourceBranch = body.pull_request.head.ref;
+				if (!allowedActions.includes(pullmergeRequestAction)) {
+					return {
+						status: 500,
+						body: {
+							message: 'Action not allowed.'
+						}
+					};
+				}
+
+				if (applicationFound.settings.previews) {
+					if (applicationFound.destinationDockerId) {
+						const isRunning = await checkContainer(
+							applicationFound.destinationDocker.engine,
+							applicationFound.id
+						);
+						if (!isRunning) {
+							return {
+								status: 500,
+								body: {
+									message: 'Application not running.'
+								}
+							};
+						}
+					}
+					if (pullmergeRequestAction === 'opened' || pullmergeRequestAction === 'reopened') {
+						await buildQueue.add(buildId, {
+							build_id: buildId,
+							type: 'webhook_pr',
+							...applicationFound,
+							sourceBranch,
+							pullmergeRequestId
+						});
+						return {
+							status: 200,
+							body: {
+								message: 'Queued. Thank you!'
+							}
+						};
+					} else if (pullmergeRequestAction === 'closed') {
+						if (applicationFound.destinationDockerId) {
+							const domain = getDomain(applicationFound.fqdn);
+							const id = `${applicationFound.id}-${pullmergeRequestId}`;
+							const engine = applicationFound.destinationDocker.engine;
+							await removeDestinationDocker({ id, engine });
+							await removeProxyConfiguration({ domain: `${pullmergeRequestId}.${domain}` });
+						}
+						return {
+							status: 200,
+							body: {
+								message: 'Removed preview. Thank you!'
+							}
+						};
+					}
+				} else {
+					return {
+						status: 500,
+						body: {
+							message: 'Pull request previews are not enabled.'
+						}
+					};
+				}
+			}
+		}
+		return {
+			status: 500,
+			body: {
+				message: 'Not handled event.'
+			}
+		};
+	} catch (err) {
+		console.log(err);
+		return {
+			status: 500,
+			body: {
+				message: err.message
+			}
+		};
+	}
+};