name: Weekly Python Download Stats

on:
  schedule:
    - cron: "0 14 * * 1" # every Monday at 2pm UTC
  workflow_dispatch:

permissions:
  contents: read

jobs:
  stats:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6

      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
        with:
          python-version: "3.12"

      - name: Generate report
        run: python .github/download_stats.py > stats.txt

      - name: Post to Slack
        env:
          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
          CHANNEL: ${{ vars.DOWNLOAD_STATS_SLACK_CHANNEL }}
        run: |
          python3 << 'PYEOF'
          import json, os, urllib.request
          from datetime import datetime

          token = os.environ["SLACK_BOT_TOKEN"]
          channel = os.environ["CHANNEL"]
          today = datetime.now().strftime("%Y-%m-%d")

          def slack_api(method, payload):
              req = urllib.request.Request(
                  f"https://slack.com/api/{method}",
                  data=json.dumps(payload).encode() if isinstance(payload, dict) else payload,
                  headers={"Authorization": f"Bearer {token}", "Content-Type": "application/json"}
                  if isinstance(payload, dict) else {"Authorization": f"Bearer {token}"},
              )
              return json.loads(urllib.request.urlopen(req).read())

          # 1. Post summary message
          resp = slack_api("chat.postMessage", {
              "channel": channel,
              "text": f":python: *Weekly Python PyPI Download Stats* — {today}",
          })
          assert resp["ok"], f"chat.postMessage failed: {resp.get('error')}"
          thread_ts = resp["ts"]

          # 2. Get upload URL
          file_size = os.path.getsize("stats.txt")
          form_data = f"filename=pypi-stats-{today}.txt&length={file_size}".encode()
          req = urllib.request.Request(
              "https://slack.com/api/files.getUploadURLExternal",
              data=form_data,
              headers={
                  "Authorization": f"Bearer {token}",
                  "Content-Type": "application/x-www-form-urlencoded",
              },
          )
          resp = json.loads(urllib.request.urlopen(req).read())
          assert resp["ok"], f"getUploadURLExternal failed: {resp.get('error')}"
          upload_url = resp["upload_url"]
          file_id = resp["file_id"]

          # 3. Upload file content
          import subprocess
          subprocess.run(["curl", "-s", "-X", "POST", upload_url, "-F", "file=@stats.txt"], check=True)

          # 4. Complete upload in thread
          resp = slack_api("files.completeUploadExternal", {
              "files": [{"id": file_id, "title": f"pypi-stats-{today}.txt"}],
              "channel_id": channel,
              "thread_ts": thread_ts,
              "initial_comment": "Full report",
          })
          assert resp["ok"], f"completeUploadExternal failed: {resp.get('error')}"
          print("Posted to Slack successfully")
          PYEOF