feat(reddit): add create link post action

packages/backend/src/apps/reddit/actions/create-link-post/index.ts

@@ -0,0 +1,53 @@
+import defineAction from '../../../../helpers/define-action';
+import { URLSearchParams } from 'url';
+
+export default defineAction({
+  name: 'Create link post',
+  key: 'createLinkPost',
+  description: 'Create a new link post within a subreddit.',
+  arguments: [
+    {
+      label: 'Title',
+      key: 'title',
+      type: 'string' as const,
+      required: true,
+      description:
+        'Heading for the recent post. Limited to 300 characters or less.',
+      variables: true,
+    },
+    {
+      label: 'Subreddit',
+      key: 'subreddit',
+      type: 'string' as const,
+      required: true,
+      description: 'The subreddit for posting. Note: Exclude /r/.',
+      variables: true,
+    },
+    {
+      label: 'Url',
+      key: 'url',
+      type: 'string' as const,
+      required: true,
+      description: '',
+      variables: true,
+    },
+  ],
+
+  async run($) {
+    const { title, subreddit, url } = $.step.parameters;
+
+    const params = new URLSearchParams({
+      kind: 'link',
+      api_type: 'json',
+      title: title as string,
+      sr: subreddit as string,
+      url: url as string,
+    });
+
+    const { data } = await $.http.post('/api/submit', params.toString());
+
+    $.setActionItem({
+      raw: data,
+    });
+  },
+});