name: Deploy to WordPress

on:
  push:
    branches: [ main ]

permissions:
  contents: write

# Cancel previous deploys if a new push arrives while one is running.
concurrency:
  group: deploy-production
  cancel-in-progress: true

jobs:
  # ── Run tests first ──────────────────────────────────────────────
  test:
    name: Pre-deploy tests
    uses: ./.github/workflows/ci.yml

  # ── Push clean plugin files to the deploy branch ─────────────────
  # Hostinger's built-in GIT integration watches the `deploy` branch
  # and auto-pulls via webhook when it changes.  This avoids the
  # firewall issues with push-based SCP/FTP from GitHub Actions.
  deploy:
    name: Update deploy branch
    runs-on: ubuntu-latest
    needs: test
    environment: production
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Sync deploy branch
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

          # Fetch the remote deploy branch (may not exist on first run).
          git fetch origin deploy:deploy 2>/dev/null || true

          # If deploy branch exists, check it out; otherwise create it.
          if git rev-parse --verify deploy >/dev/null 2>&1; then
            git checkout deploy
          else
            git checkout --orphan deploy
            git rm -rf --cached . > /dev/null 2>&1 || true
          fi

          # Remove all tracked files so we start clean each time.
          git rm -rf . > /dev/null 2>&1 || true

          # Checkout only the plugin runtime files from main.
          git checkout main -- \
            admin/ \
            includes/ \
            languages/ \
            public/ \
            peptide-news-plugin.php

          # Commit only if there are actual changes.
          git add -A
          if git diff-index --quiet HEAD -- 2>/dev/null; then
            echo "No changes to deploy."
          else
            git commit -m "Deploy ${GITHUB_SHA::7} from main"
          fi

          # Normal push (fast-forward compatible with Hostinger's git pull).
          git push origin deploy

      - name: Purge LiteSpeed Cache
        if: success()
        run: |
          # Give Hostinger a moment to pull the new code.
          sleep 10

          # Trigger a cache purge via the WordPress REST API.
          if [ -n "${{ secrets.WP_APP_PASSWORD }}" ]; then
            curl -s -X POST \
              -u "${{ secrets.WP_ADMIN_USER }}:${{ secrets.WP_APP_PASSWORD }}" \
              "${{ secrets.WP_SITE_URL }}/wp-json/peptide-news/v1/cache-purge" \
              --max-time 15 || echo "Cache purge skipped (endpoint not available)"
          else
            echo "No WP_APP_PASSWORD set — skipping remote cache purge."
          fi

      - name: Deploy summary
        run: |
          echo "## Deployment Complete" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "- **Branch:** \`${{ github.ref_name }}\`" >> $GITHUB_STEP_SUMMARY
          echo "- **Commit:** \`${GITHUB_SHA::7}\`" >> $GITHUB_STEP_SUMMARY
          echo "- **Method:** Hostinger GIT auto-deploy (deploy branch)" >> $GITHUB_STEP_SUMMARY
          echo "- **Deployed to:** ${{ secrets.WP_SITE_URL || 'peptiderepo.com' }}" >> $GITHUB_STEP_SUMMARY