daily-theme-update.yml

name: Daily AI Update (Theme & Timeline)

on:
  # Run every day at 08:00 UTC
  schedule:
    - cron: '0 8 * * *'
  # Allow manual trigger from GitHub Actions UI
  workflow_dispatch:

permissions:
  contents: write
  models: read

jobs:
  update-theme:
    name: Generate new theme with GitHub Models
    runs-on: ubuntu-latest

    steps:
      # ── Checkout ────────────────────────────────────────────────────────────
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          # Use a PAT if you want the push to trigger downstream workflows (e.g. Cloudflare Pages)
          # Otherwise GITHUB_TOKEN is sufficient for the commit itself.
          token: ${{ secrets.GITHUB_TOKEN }}

      # ── Node.js ─────────────────────────────────────────────────────────────
      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'

      # ── Install deps ─────────────────────────────────────────────────────────
      - name: Install dependencies
        run: npm ci

      # ── Run AI theme update ──────────────────────────────────────────────────
      - name: Update theme.json via GitHub Models API
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: node scripts/update-theme.js

      # ── Run AI timeline update ────────────────────────────────────────────────
      - name: Update timeline.json via GitHub Models API
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: node scripts/update-timeline.js

      # ── Check for changes ────────────────────────────────────────────────────
      - name: Check what changed
        id: changes
        run: |
          THEME_CHANGED=false
          TIMELINE_CHANGED=false
          git diff --quiet src/theme.json    || THEME_CHANGED=true
          git diff --quiet src/data/timeline.json || TIMELINE_CHANGED=true
          echo "theme=${THEME_CHANGED}"       >> "$GITHUB_OUTPUT"
          echo "timeline=${TIMELINE_CHANGED}" >> "$GITHUB_OUTPUT"
          if $THEME_CHANGED || $TIMELINE_CHANGED; then
            echo "any=true" >> "$GITHUB_OUTPUT"
          else
            echo "any=false" >> "$GITHUB_OUTPUT"
          fi

      # ── Commit & push ────────────────────────────────────────────────────────
      - name: Commit AI updates
        if: steps.changes.outputs.any == 'true'
        run: |
          git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          DATE=$(date -u '+%Y-%m-%d')

          # Stage only the files that actually changed
          git diff --quiet src/theme.json          || git add src/theme.json
          git diff --quiet src/data/timeline.json  || git add src/data/timeline.json

          # Build a descriptive commit message
          PARTS=()
          ${{ steps.changes.outputs.theme == 'true' && 'true' || 'false' }}    && PARTS+=("theme")
          ${{ steps.changes.outputs.timeline == 'true' && 'true' || 'false' }} && PARTS+=("timeline")
          CHANGED=$(IFS=', '; echo "${PARTS[*]}")

          git commit -m "chore(ai): daily update — ${CHANGED} (${DATE})

          Automated daily refresh by GitHub Copilot (GitHub Models API).
          - theme: aesthetic & color palette updated based on current design trends
          - timeline: new AI milestones appended if any significant events detected"
          git push

      # ── No-op log ────────────────────────────────────────────────────────────
      - name: Log if no changes
        if: steps.changes.outputs.any == 'false'
        run: echo "No files changed by either AI script. Nothing to commit."