name: Switch to KV mode

on:
  workflow_dispatch:

permissions:
  contents: write

jobs:
  patch:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Configure git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"

      - name: Switch wrangler.toml to KV mode
        run: |
          python - <<'PY'
          import re
          from pathlib import Path

          path = Path("wrangler.toml")
          text = path.read_text(encoding="utf-8")

          pattern = (
              r"\[\[r2_buckets\]\]\s*"
              r'binding\s*=\s*"ATTACHMENTS"\s*'
              r'bucket_name\s*=\s*"nodewarden-attachments"\s*'
          )
          replacement = (
              '[[kv_namespaces]]\n'
              'binding = "ATTACHMENTS_KV"\n'
              'id = "placeholder"\n'
          )

          new_text, count = re.subn(pattern, replacement, text, count=1)
          if count == 0 and 'binding = "ATTACHMENTS_KV"' not in text:
              raise SystemExit("Expected R2 block not found in wrangler.toml")

          if count > 0:
              path.write_text(new_text, encoding="utf-8")
          PY

      - name: Update deploy button link in README files
        env:
          REPO_SLUG: ${{ github.repository }}
        run: |
          python - <<'PY'
          import os
          import re
          from pathlib import Path

          repo_slug = os.environ["REPO_SLUG"]
          deploy_url = f"https://deploy.workers.cloudflare.com/?url=https://github.com/{repo_slug}"

          pattern = re.compile(
              r'https://deploy\.workers\.cloudflare\.com/\?url=https://github\.com/[^)\s]+'
          )

          for file_name in ("README.md", "README_EN.md"):
              path = Path(file_name)
              text = path.read_text(encoding="utf-8")
              new_text, count = pattern.subn(deploy_url, text, count=2)
              if count > 0:
                  path.write_text(new_text, encoding="utf-8")
          PY

      - name: Commit KV mode change
        run: |
          git add wrangler.toml README.md README_EN.md
          git diff --cached --quiet && exit 0
          git commit -m "chore: switch wrangler.toml to KV mode"
          git push origin main