name: Sync Repository to HuggingFace Space

# Auto-deploys the repo to the Hugging Face Space on every push to main.
# Mirrors the simple, always-triggers approach used by ``lightweight-embeddings``.
#
# Triggers:
#   - push (main)       → fires immediately when code lands on main.
#   - workflow_dispatch → manual override (e.g. emergency redeploy).
#
# Required secret: HF_TOKEN  (Hugging Face access token with write scope)
# Optional repo variables (Settings → Variables):
#   HF_USERNAME   default: lamhieu
#   HF_SPACE      default: docsifer

on:
  push:
    branches: [main]
  workflow_dispatch:

concurrency:
  group: hf-deploy
  cancel-in-progress: false

jobs:
  sync-to-huggingface:
    name: Sync code to HuggingFace Space
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Fetch all history for all branches and tags
          lfs: true       # Enable Git LFS support

      - name: Push to HuggingFace Space
        env:
          HF_TOKEN: ${{ secrets.HF_TOKEN }}
          HF_USERNAME: ${{ vars.HF_USERNAME || 'lamhieu' }}
          HF_SPACE: ${{ vars.HF_SPACE || 'docsifer' }}
        run: |
          set -euo pipefail

          if [ -z "${HF_TOKEN:-}" ]; then
            echo "::error::HF_TOKEN secret is not configured."
            exit 1
          fi

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

          REMOTE="https://${HF_USERNAME}:${HF_TOKEN}@huggingface.co/spaces/${HF_USERNAME}/${HF_SPACE}"
          echo "Pushing HEAD to space ${HF_USERNAME}/${HF_SPACE} (main)"

          # Force-push so the Space mirrors GitHub exactly. The Space history
          # is treated as a derived artifact, not a source of truth.
          if ! git push -f "${REMOTE}" HEAD:main; then
            echo "::error::Failed to sync with HuggingFace Space"
            exit 1
          fi