name: Deploy to Hugging Face Space

on:
  push:
    branches: [ main ]
  workflow_dispatch:

permissions:
  contents: write

jobs:
  deploy:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          lfs: true

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

      - name: Ensure Git LFS is installed
        run: |
          sudo apt-get update
          sudo apt-get install -y git-lfs
          git lfs install

      - name: Ensure .gitattributes for images
        run: |
          git lfs track "images/**" || true
          echo "images/** filter=lfs diff=lfs merge=lfs -text" >> .gitattributes || true
          git add .gitattributes || true
          git commit -m "ci: add gitattributes" || true

      - name: Prepare repository for pre-deploy commit
        run: |
          git add -A
          git diff --cached --quiet || git commit -m "ci: pre-deploy commit" || echo "no changes"

      - name: Build Docker container for HF Spaces
        run: |
          docker build -t hf-space-classifier:latest .

      - name: Push to Hugging Face Space (via HTTPS)
        env:
          HF_USERNAME: ${{ secrets.HF_USERNAME }}
          HF_TOKEN: ${{ secrets.HF_TOKEN }}
          HF_SPACE_REPO: ${{ secrets.HF_SPACE_REPO }}
        run: |
          if [ -z "$HF_USERNAME" ] || [ -z "$HF_TOKEN" ] || [ -z "$HF_SPACE_REPO" ]; then
            echo "ERROR: Missing secrets HF_USERNAME, HF_TOKEN, HF_SPACE_REPO"
            exit 1
          fi

          git remote remove hf-space || true
          git remote add hf-space "https://${HF_USERNAME}:${HF_TOKEN}@huggingface.co/spaces/${HF_SPACE_REPO}.git"
          git push --force hf-space HEAD:main

      - name: Done
        run: echo "Pushed to Hugging Face Space"