name: Cleanup Cache

on:
  pull_request:
    types:
      - closed

permissions:
  actions: write
  contents: read
  packages: write

jobs:
  cleanup:
    runs-on: ubuntu-latest
    steps:
      - name: Check out code
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        
      - name: Cleanup
        run: |
          gh extension install actions/gh-actions-cache
          
          REPO=${{ github.repository }}
          BRANCH="refs/pull/${{ github.event.pull_request.number }}/merge"

          while true
          do
            cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH -L 100 | cut -f 1 )

            if [ -z "$cacheKeysForPR" ]
            then
              break
            fi

            ## Setting this to not fail the workflow while deleting cache keys. 
            set +e
            for cacheKey in $cacheKeysForPR
            do
              gh actions-cache delete $cacheKey -R $REPO -B $BRANCH --confirm
            done
          done
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Cleanup GHCR image
        continue-on-error: true
        run: |
          package_path="${GITHUB_REPOSITORY#*/}/appwrite-dev"
          encoded_path="$(printf '%s' "$package_path" | jq -Rr @uri)"

          gh api --paginate "/repos/${GITHUB_REPOSITORY}/pulls/${{ github.event.pull_request.number }}/commits" --jq '.[].sha' | while read -r sha; do
            version_ids=$(gh api --paginate -H "Accept: application/vnd.github+json" \
              "/orgs/${GITHUB_REPOSITORY_OWNER}/packages/container/${encoded_path}/versions" \
              --jq ".[] | select(.metadata.container.tags | index(\"${sha}\")) | .id")

            if [ -z "$version_ids" ]; then
              echo "No GHCR version found for SHA ${sha}"
              continue
            fi

            echo "$version_ids" | while read -r version_id; do
              gh api --method DELETE -H "Accept: application/vnd.github+json" \
                "/orgs/${GITHUB_REPOSITORY_OWNER}/packages/container/${encoded_path}/versions/${version_id}"
              echo "Deleted ${package_path}:${sha} (version ${version_id})"
            done
          done
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}