feat: gitlab triggers integration

packages/backend/src/apps/gitlab/auth/generate-auth-url.ts

@@ -0,0 +1,24 @@
+import { IGlobalVariable } from '@automatisch/types';
+import { URLSearchParams } from 'url';
+
+export default async function generateAuthUrl($: IGlobalVariable) {
+  // ref: https://docs.gitlab.com/ee/api/oauth2.html#authorization-code-flow
+
+  const scopes = ['api', 'read_user'];
+
+  const searchParams = new URLSearchParams({
+    client_id: $.auth.data.clientId as string,
+    redirect_uri: $.auth.data.oAuthRedirectUrl as string,
+    scope: scopes.join(' '),
+    response_type: 'code',
+    state: `${Date.now()}`,
+  });
+
+  const url = `${
+    $.auth.data.oInstanceUrl
+  }/oauth/authorize?${searchParams.toString()}`;
+
+  await $.auth.set({
+    url,
+  });
+}