V2 (#111)

Just v2

src/lib/importers/github.ts

@@ -0,0 +1,50 @@
+import { asyncExecShell, saveBuildLog } from '$lib/common';
+import got from 'got';
+import jsonwebtoken from 'jsonwebtoken';
+import * as db from '$lib/database';
+import { PrismaErrorHandler } from '$lib/database';
+
+export default async function ({
+	applicationId,
+	debug,
+	workdir,
+	githubAppId,
+	repository,
+	branch,
+	buildId
+}): Promise<any> {
+	try {
+		saveBuildLog({ line: 'GitHub importer started', buildId, applicationId });
+		const { privateKey, appId, installationId } = await db.getUniqueGithubApp({ githubAppId });
+		const githubPrivateKey = privateKey.replace(/\\n/g, '\n').replace(/"/g, '');
+
+		const payload = {
+			iat: Math.round(new Date().getTime() / 1000),
+			exp: Math.round(new Date().getTime() / 1000 + 60),
+			iss: appId
+		};
+		const jwtToken = jsonwebtoken.sign(payload, githubPrivateKey, {
+			algorithm: 'RS256'
+		});
+		const { token } = await got
+			.post(`https://api.github.com/app/installations/${installationId}/access_tokens`, {
+				headers: {
+					Authorization: `Bearer ${jwtToken}`,
+					Accept: 'application/vnd.github.machine-man-preview+json'
+				}
+			})
+			.json();
+		saveBuildLog({
+			line: `Cloning ${repository}:${branch} branch.`,
+			buildId,
+			applicationId
+		});
+		await asyncExecShell(
+			`git clone -q -b ${branch} https://x-access-token:${token}@github.com/${repository}.git ${workdir}/ && cd ${workdir} && git submodule update --init --recursive && cd ..`
+		);
+		const { stdout: commit } = await asyncExecShell(`cd ${workdir}/ && git rev-parse HEAD`);
+		return commit.replace('\n', '');
+	} catch (error) {
+		return PrismaErrorHandler(error);
+	}
+}