name: Sync from Gitea (distribute→distribute, keep workflow)

on:
  schedule:
    # 2 times per day (UTC): 7:00, 11:00
    - cron: '0 7,11 * * *'
  workflow_dispatch: {}

permissions:
  contents: write  # allow pushing with GITHUB_TOKEN

jobs:
  mirror:
    runs-on: ubuntu-latest

    steps:
      - name: Check out GitHub repo
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Fetch from Gitea
        env:
          GITEA_URL: ${{ secrets.GITEA_URL }}
          GITEA_USER: ${{ secrets.GITEA_USERNAME }}
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          # Build authenticated Gitea URL: https://USER:TOKEN@...
          AUTH_URL="${GITEA_URL/https:\/\//https:\/\/$GITEA_USER:$GITEA_TOKEN@}"

          git remote add gitea "$AUTH_URL"
          git fetch gitea --prune

      - name: Update distribute from gitea/distribute, keep workflow, and force-push
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GH_REPO: ${{ github.repository }}
        run: |
          # Configure identity for commits made by this workflow
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

          # Authenticated push URL for GitHub
          git remote set-url origin "https://x-access-token:${GH_TOKEN}@github.com/${GH_REPO}.git"

          WF_PATH=".github/workflows/sync-from-gitea.yml"

          # If the workflow exists in the current checkout, save a copy
          if [ -f "$WF_PATH" ]; then
            mkdir -p /tmp/gh-workflows
            cp "$WF_PATH" /tmp/gh-workflows/
          fi

          # Reset local 'distribute' to exactly match gitea/distribute
          if git show-ref --verify --quiet refs/remotes/gitea/distribute; then
            git checkout -B distribute gitea/distribute
          else
            echo "No gitea/distribute found, nothing to sync."
            exit 0
          fi

          # Restore the workflow into the new HEAD and commit if needed
          if [ -f "/tmp/gh-workflows/sync-from-gitea.yml" ]; then
            mkdir -p .github/workflows
            cp /tmp/gh-workflows/sync-from-gitea.yml "$WF_PATH"
            git add "$WF_PATH"
            if ! git diff --cached --quiet; then
              git commit -m "Inject GitHub sync workflow"
            fi
          fi

          # Force-push distribute so GitHub mirrors Gitea + workflow
          git push origin distribute --force