name: Gentoo Utils

on: [push]

jobs:
  build-oci-image:
    runs-on: ubuntu-latest
    continue-on-error: true
    steps:
      - name: Checkout repo
        uses: actions/checkout@v5
        with:
          fetch-depth: 0

      - name: Check for changes before building
        id: image-changes
        # build image only if 1. changes are detected or 2. an image for the working branch doesnt exist
        run: |
          branch_name="${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}"

          if [[ "$branch_name" == "${{ gitea.event.repository.default_branch }}" ]]; then
            image_tag=latest
          else
            image_tag=$branch_name
          fi

          echo "branch_name=$branch_name" >> $GITEA_OUTPUT
          # slugify
          echo "image_tag=$(echo "$image_tag" | sed -E 's/[^a-zA-Z0-9]/-/g')" >> $GITEA_OUTPUT

          if ! git diff ${{ gitea.event.before }} ${{ gitea.sha }} --no-patch --exit-code .docker; then
            build_image=true
          else
            if ! docker manifest inspect git.epenguin.net/${{ gitea.repository }}:${image_tag} >/dev/null 2>&1; then
              build_image=true
            else
              build_image=false
            fi
          fi

          echo "build_image=$build_image" >> $GITEA_OUTPUT
          cat $GITEA_OUTPUT
      - name: Set up Docker buildx
        if: steps.image-changes.outputs.build_image == 'true'
        uses: docker/setup-buildx-action@v3

      - name: Log in to Github Container Registry
        if: steps.image-changes.outputs.build_image == 'true'
        uses: docker/login-action@v3
        with:
          registry: git.epenguin.net
          username: ${{ vars.CI_BOT_USERNAME }}
          password: ${{ secrets.CI_BOT_TOKEN }}

      - name: Build and push
        if: steps.image-changes.outputs.build_image == 'true'
        uses: docker/build-push-action@v6
        with:
          push: true
          tags: git.epenguin.net/${{ gitea.repository }}:${{ steps.image-changes.outputs.image_tag }}
          context: "{{defaultContext}}:.docker"

  build:
    runs-on: brutalisk
    needs: build-oci-image
    container:
      image: git.epenguin.net/${{ gitea.repository }}:${{ needs.build-oci-image.outputs.image_tag }}
    steps:
      - name: Checkout repo
        uses: actions/checkout@v5

      - name: build and check
        run: ./check.sh