name: image puller runner
run-name: Pull and Push 🚀
on:
  push:
  workflow_dispatch: # Enables the manual run UI button

jobs:
  setup:
    env:
      RUNNER_TOOL_CACHE: /toolcache

    container:
      image: gitea.geeraert.eu/pi-ux-ce/custom-runner-debian-slim:latest
      volumes:
        - act-toolcache:/opt/hostedtoolcache # this is where Runner store their cache default
    runs-on: host-runner
    outputs:
      image_matrix: ${{ steps.set-matrix.outputs.images }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Parse image file into JSON array
        id: set-matrix
        run: |
          # Read lines, remove empty lines/comments, and format as a JSON array
          # e.g., ["ubuntu:latest", "alpine:3.18"]
          JSON_ARRAY=$(jq -R -s -c 'split("\n") | map(select(length > 0 and (startswith("#") | not)))' image_list.txt)
          
          echo "Images found: $JSON_ARRAY"
          echo "images=$JSON_ARRAY" >> $GITHUB_OUTPUT

  # Job 2: Process each image in parallel matrix slots
  process-images:
    needs: setup
    runs-on: host-runner
    container:
      image: gitea.geeraert.eu/pi-ux-ce/custom-runner-debian-slim:latest

    strategy:
      max-parallel: 1
      fail-fast: false 
      matrix:
        image: ${{ fromJSON(needs.setup.outputs.image_matrix) }}

    name: Sync (${{ matrix.image }})

    steps:
      - name: Login to gitea
        uses: docker/login-action@v3
        with:
          registry: gitea.geeraert.eu
          username: ${{ secrets.USERNAME_GITEA }}
          password: ${{ secrets.PASSWORD_GITEA }}


      - name: docker pull ${{ matrix.image }}
        run: docker pull ${{ matrix.image }}

      - name: Process, Tag and Push to Gitea
        run: |
          RAW_IMAGE="${{ matrix.image }}"
          
          # Clean up the image name string to prevent malformed targets
          # e.g., converts 'ghcr.io/bitwarden/admin:2026.1.0' into 'bitwarden-admin:2026.1.0'
          CLEANED_NAME=$(echo "$RAW_IMAGE" | sed -E 's|^[^/]*/||' | tr '/' '-')
          
          TARGET_IMAGE="gitea.geeraert.eu/pi-ux-ce/${CLEANED_NAME}"
          
          echo "Original: $RAW_IMAGE"
          echo "Target Registry Image: $TARGET_IMAGE"
          
          # Perform operations sequentially
          docker tag "$RAW_IMAGE" "$TARGET_IMAGE"
          docker push "$TARGET_IMAGE"

      - name: Post Cleanup Host Storage
        if: always()
        run: |
          CLEANED_NAME=$(echo "${{ matrix.image }}" | sed -E 's|^[^/]*/||' | tr '/' '-')
          docker rmi "${{ matrix.image }}" || true
          docker rmi "gitea.geeraert.eu/pi-ux-ce/${CLEANED_NAME}" || true