name: Sync to Hugging Face Spaces

on:
  push:
    branches: [main]
  workflow_dispatch:

jobs:
  sync:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Push to Hugging Face
        env:
          HF_TOKEN: ${{ secrets.HF_TOKEN }}
        run: |
          # 1. Initialize Git LFS inside the runner
          git lfs install
          
          # 2. Configure temporary Git identity for dynamic commit
          git config --global user.email "deploy@github.actions"
          git config --global user.name "GitHub Actions"
          
          # 3. Dynamically prepend the Hugging Face YAML frontmatter to README.md on the fly
          cat << 'EOF' > hf_frontmatter.txt
          ---
          title: DT-Explorer
          emoji: 🔍
          colorFrom: blue
          colorTo: indigo
          sdk: docker
          pinned: false
          ---
          
          EOF
          cat hf_frontmatter.txt README.md > temp_readme.md
          mv temp_readme.md README.md
          rm hf_frontmatter.txt
          
          # 4. Commit the injected frontmatter locally in the runner
          git add README.md
          git commit -m "chore: inject Hugging Face frontmatter metadata dynamically" || echo "No changes to commit"
          
          # 5. Configure a named remote to allow Git LFS to authenticate correctly
          git remote add hf https://sadhumitha-s:$HF_TOKEN@huggingface.co/spaces/sadhumitha-s/DT-Explorer
          
          # 6. Force push using HEAD:main to the hf remote
          git push --force hf HEAD:main 2> push_err.txt || {
            echo "=== HUGGING FACE PUSH ERROR LOG ==="
            if [ -n "$HF_TOKEN" ]; then
              sed "s/$HF_TOKEN/*****_TOKEN/g" push_err.txt
            else
              cat push_err.txt
            fi
            exit 1
          }