Git Optimizer.yml

name: Git Optimizer

on:
  schedule:
    - cron: "30 18 * * 6"   # Runs every Sunday at 00:00 IST (18:30 UTC Saturday)
  workflow_dispatch:

permissions:
  actions: write
  contents: read

jobs:
  optimize:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout full history
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Skip if no commits in last 7 days
        run: |
          LAST_COMMIT_DATE=$(git log -1 --pretty="%ct")
          SEVEN_DAYS_AGO=$(date -d "7 days ago" +%s)

          if [ "$LAST_COMMIT_DATE" -lt "$SEVEN_DAYS_AGO" ]; then
            echo "⏩ No activity in last 7 days. Skipping optimization."
            exit 0
          fi

          echo "✔ Recent commits detected. Continuing..."

      - name: Lightweight Git GC
        run: git gc --auto

      - name: Compact loose objects
        run: git repack -d

      - name: Update commit-graph
        run: git commit-graph write --reachable --changed-paths

      - name: Cleanup GitHub Actions caches
        uses: actions/github-script@v7
        with:
          script: |
            const caches = await github.rest.actions.getActionsCacheList({
              owner: context.repo.owner,
              repo: context.repo.repo,
            });

            for (const cache of caches.data.actions_caches) {
              await github.rest.actions.deleteActionsCacheById({
                owner: context.repo.owner,
                repo: context.repo.repo,
                cache_id: cache.id
              });
            }

            console.log("Done.");