Merge branch 'master' of github.com:jorilallo/atlas into collection-home

shared/utils/routeHelpers.js

@@ -0,0 +1,26 @@
+// @flow
+
+export function slackAuth(
+  state: string,
+  scopes: string[] = [
+    'identity.email',
+    'identity.basic',
+    'identity.avatar',
+    'identity.team',
+  ],
+  redirectUri: string = `${process.env.URL}/auth/slack`
+): string {
+  const baseUrl = 'https://slack.com/oauth/authorize';
+  const params = {
+    client_id: process.env.SLACK_KEY,
+    scope: scopes ? scopes.join(' ') : '',
+    redirect_uri: redirectUri,
+    state,
+  };
+
+  const urlParams = Object.keys(params)
+    .map(key => `${key}=${encodeURIComponent(params[key])}`)
+    .join('&');
+
+  return `${baseUrl}?${urlParams}`;
+}