Syncs your Foursquare/Swarm checkins to your ATProto PDS as com.barryfrost.checkin records. Runs on Val.Town's free tier as a 15-minute cron.

1. Go to https://foursquare.com/developers/ and create a new app.
2. Add http://localhost:8765/callback as an allowed Redirect URI.
3. Note your Client ID and Client Secret.

FSQ_CLIENT_ID=<id> FSQ_CLIENT_SECRET=<secret> deno task bootstrap

A browser window will open. Log in and approve. The token is printed to your terminal — it doesn't expire.

1. Go to https://bsky.app/settings/app-passwords
2. Create a new app password named fsq2pds.

1. Install the vt CLI: https://docs.val.town/cli/

2. From this directory run vt push (or use the Val.Town editor to paste the files).

3. Set these environment variables in Val.Town settings:

   Variable	Value
   FSQ_OAUTH_TOKEN	Token from step 2
   FSQ_API_VERSION	20240101
   BSKY_HANDLE	Your Bluesky handle
   BSKY_APP_PASSWORD	App password from step 3

4. Open cron.ts in Val.Town and add a cron trigger set to every 15 minutes.

1. Trigger manually (first run). It will set the sync cursor to now and exit — no records written yet. Check the logs for First run: launch cursor set to ....
2. Check in on Swarm.
3. Trigger again (or wait up to 15 minutes). Check the logs for Synced <id> (<venue>) → at://....
4. View your records at:

   https://pdsls.dev/at://<your-did>/com.barryfrost.checkin
   

{
  "$type": "com.barryfrost.checkin",
  "createdAt": "2024-06-01T14:30:00.000Z",
  "location": {
    "$type": "community.lexicon.location.fsq",
    "fsq_place_id": "abc123def456",
    "name": "Blue Bottle Coffee",
    "latitude": "37.776",
    "longitude": "-122.418"
  },
  "address": "123 High Street, London, UK",
  "category": "Coffee Shop",
  "comment": "Best flat white in town",
  "photos": [
    {
      "image": {
        "$type": "blob",
        "ref": { "$link": "bafyrei..." },
        "mimeType": "image/jpeg",
        "size": 245678
      }
    }
  ]
}

address, category, comment, and photos are all optional — omitted when the source checkin has no value for them. The lexicon doc itself is maintained in the barryfrost-v7 repo, not here.

• Only new checkins are synced. Nothing before the first run is imported. Use deno task backfill to import historical checkins, and deno task backfill-shouts to add comment to already-synced records whose shout predates that feature.
• Photos: fetched at FSQ's 1024x1024 size. Skipped if >1MB or unreachable.
• Edits/deletes: not synced. Records are write-once. Delete PDS records manually if needed. (backfill-shouts is a one-time exception that patches comment onto existing records.)
• If a run fails mid-way, the cursor stays at the last successful checkin. The next run replays cleanly — duplicate protection is handled by the seen_checkins table.