Rebuild program schedule #1
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| # Rebuilds the program page artifacts from the Schedule Google Sheet once a | |
| # day, committing only when the schedule actually changed. | |
| # | |
| # The sheet ID is never committed to the repo: set it as a repository secret | |
| # named PROGRAM_SHEET_ID (Settings -> Secrets and variables -> Actions -> | |
| # Secrets) so it also stays masked in logs. Scheduled runs are quietly | |
| # skipped until the secret exists; a manual "Run workflow" without it fails | |
| # loudly so misconfiguration is visible. | |
| name: Rebuild program schedule | |
| on: | |
| schedule: | |
| - cron: "0 13 * * *" # daily, 6am Pacific | |
| workflow_dispatch: | |
| permissions: | |
| contents: write | |
| jobs: | |
| build: | |
| runs-on: ubuntu-latest | |
| env: | |
| PROGRAM_SHEET_ID: ${{ secrets.PROGRAM_SHEET_ID }} | |
| steps: | |
| # Secrets are invisible to job-level `if`, so this step gates the rest. | |
| - name: Check the sheet ID is configured | |
| id: config | |
| run: | | |
| if [ -n "$PROGRAM_SHEET_ID" ]; then | |
| echo "ok=true" >> "$GITHUB_OUTPUT" | |
| elif [ "$GITHUB_EVENT_NAME" = "workflow_dispatch" ]; then | |
| echo "::error::The PROGRAM_SHEET_ID secret is not set." | |
| exit 1 | |
| else | |
| echo "PROGRAM_SHEET_ID secret not set — skipping scheduled rebuild." | |
| echo "ok=false" >> "$GITHUB_OUTPUT" | |
| fi | |
| - uses: actions/checkout@v4 | |
| if: steps.config.outputs.ok == 'true' | |
| - uses: actions/setup-node@v4 | |
| if: steps.config.outputs.ok == 'true' | |
| with: | |
| node-version: 20 | |
| - name: Build program from sheet | |
| if: steps.config.outputs.ok == 'true' | |
| run: node scripts/build-program.js | |
| - name: Commit if changed | |
| if: steps.config.outputs.ok == 'true' | |
| run: | | |
| if git diff --quiet -- _includes/program-schedule.html _data/program.json; then | |
| echo "Schedule unchanged — nothing to commit." | |
| else | |
| git config user.name "github-actions[bot]" | |
| git config user.email "41898282+github-actions[bot]@users.noreply.github.com" | |
| git add _includes/program-schedule.html _data/program.json | |
| git commit -m "Rebuild program schedule from sheet" | |
| git push | |
| fi |