name: Sync Icons to CDN

on:
  push:
    branches:
      - main
    paths:
      - 'icons/**'

  workflow_dispatch:

jobs:
  sync-icons:
    runs-on: ubuntu-latest

    permissions:
      contents: write

    steps:
      - name: Checkout main branch
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

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

      - name: Sync icons and create release tag
        id: sync
        run: |
          CDN_BRANCH="icons"
          SOURCE_FOLDER="icons"

          if [ ! -d "$SOURCE_FOLDER" ]; then
            echo "No $SOURCE_FOLDER folder found"
            exit 0
          fi

          # Get version from package.json
          VERSION=$(node -p "require('./package.json').version")
          VERSION_TAG="icons-v${VERSION}"

          echo "Package version: $VERSION"
          echo "Tag: $VERSION_TAG"

          # Check if tag already exists
          if git ls-remote --tags origin | grep -q "refs/tags/${VERSION_TAG}$"; then
            echo "Tag $VERSION_TAG already exists, skipping"
            echo "has_changes=false" >> $GITHUB_OUTPUT
            exit 0
          fi

          # Store icons in temp location
          mkdir -p /tmp/icons-sync
          cp -r $SOURCE_FOLDER/* /tmp/icons-sync/

          MAIN_SHA=$(git rev-parse --short HEAD)

          # Setup CDN branch
          if git ls-remote --heads origin $CDN_BRANCH | grep -q $CDN_BRANCH; then
            git checkout $CDN_BRANCH
            find . -maxdepth 1 ! -name '.git' ! -name '.' -exec rm -rf {} +
          else
            git checkout --orphan $CDN_BRANCH
            git rm -rf .
          fi

          # Copy icons to root
          cp -r /tmp/icons-sync/* .

          git add -A

          if git diff --staged --quiet; then
            echo "No changes to sync"
            echo "has_changes=false" >> $GITHUB_OUTPUT
            exit 0
          fi

          git commit -m "v${VERSION}"
          git push -u origin $CDN_BRANCH --force-with-lease

          # Create versioned tag
          git tag $VERSION_TAG
          git push origin $VERSION_TAG

          echo "has_changes=true" >> $GITHUB_OUTPUT
          echo "version_tag=$VERSION_TAG" >> $GITHUB_OUTPUT

      - name: Output CDN URLs
        if: steps.sync.outputs.has_changes == 'true'
        run: |
          REPO="${{ github.repository }}"
          TAG="${{ steps.sync.outputs.version_tag }}"

          echo "═══════════════════════════════════════════════════════════"
          echo "  CDN URLs"
          echo "═══════════════════════════════════════════════════════════"
          echo ""
          echo "  https://cdn.jsdelivr.net/gh/${REPO}@${TAG}/<filename>"
          echo ""
          echo "  Browse: https://cdn.jsdelivr.net/gh/${REPO}@${TAG}/"
          echo ""
          echo "═══════════════════════════════════════════════════════════"