cache.yml

name: Clean cache

on:
  pull_request:
    types:
    - closed
  workflow_dispatch:
    inputs:
      PR_NUMBER:
        description: ID number of the pull request assiocited with the cache
        required: false
        type: number
      BRANCH_NAME:
        description: Branch name assiocited with the cache
        required: false
        type: string
      COMMIT_SHA:
        description: Commit sha assiocited with the cache
        required: false
        type: string

permissions:
  packages: write

jobs:
  cleanup-cache:
    name: Delete gituhb cache
    runs-on: ubuntu-latest
    steps:
    - name: Check out code
      uses: actions/checkout@v4

    - name: Clean cache for closed branch
      run: |
        gh extension install actions/gh-actions-cache

        REPO=${{ github.repository }}
        if [ -n "${{ inputs.BRANCH_NAME }}" ]; then
          BRANCH="${{ inputs.BRANCH_NAME }}"
        else
          BRANCH="refs/pull/${{ github.event.pull_request.number || inputs.PR_NUMBER }}/merge"
        fi

        echo "Fetching list of cache key"
        cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH -L 100 | cut -f 1 )

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

  infos:
    name: Generate infos
    runs-on: ubuntu-latest
    if: ${{ github.event.pull_request.number || github.event.number }}
    outputs:
      build-matrix: ${{ steps.infos.outputs.BUILD_MATRIX }}
    steps:
    - name: Checks-out repository
      uses: actions/checkout@v4

    - name: Get variables
      id: infos
      run: |
        echo "BUILD_MATRIX=$(jq -c . < ./ci/matrix/docker.json)" >> $GITHUB_OUTPUT

  cleanup-image:
    name: Delete image from ghcr.io
    runs-on: ubuntu-latest
    needs:
    - infos
    strategy:
      matrix:
        images: ${{ fromJSON(needs.infos.outputs.build-matrix) }}
    steps:
    - name: Checks-out repository
      uses: actions/checkout@v4

    - name: Get repository owner and name
      id: image-infos
      run: |
        echo "USER_NAME=$(echo '${{ github.repository }}' | cut -d "/" -f 1)" >> $GITHUB_OUTPUT
        echo "REPO_NAME=$(echo '${{ github.repository }}' | cut -d "/" -f 2)" >> $GITHUB_OUTPUT

    - name: Delete ${{ matrix.images.name }} image
      run: |
        curl -s https://raw.githubusercontent.com/this-is-tobi/tools/main/shell/delete-ghcr-image.sh | bash -s -- \
          -o "${{ steps.image-infos.outputs.USER_NAME }}" \
          -i "${{ steps.image-infos.outputs.REPO_NAME }}" \
          -t "${{ inputs.COMMIT_SHA || format('pr-{0}', inputs.PR_NUMBER || inputs.COMMIT_SHA || github.event.pull_request.number || github.event.number) }}" \
          -g "${{ secrets.GITHUB_TOKEN }}"