name: Build and push OCI image

on:
  push:
    tags:
      - "releases/*"

env:
  REGISTRY: repo.katenary.io
  IMAGE_NAME: ${{ gitea.repository }}
  STORAGE_DRIVER: vfs
  VERSION: ${{ gitea.ref_name }}

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Extract version and image name
        run: |
          # remove "releases/"
          VERSION="${VERSION#releases/}"
          # set image name to lower case
          IMAGE_NAME="${IMAGE_NAME,,}"

          echo "Exporting variable VERSION=$VERSION"
          echo "Exporting variable IMAGE_NAME=$IMAGE_NAME"

          echo "VERSION=$VERSION" >> $GITEA_OUTPUT
          echo "IMAGE_NAME=$IMAGE_NAME" >> $GITEA_OUTPUT

          echo "VERSION=$VERSION" >> $GITEA_ENV
          echo "IMAGE_NAME=$IMAGE_NAME" >> $GITEA_ENV

      - name: Install Buildah
        run: |-
          env
          if ! command -v buildah 2>/dev/null; then
            echo "Install Buildah"
            sudo apt-get update
            sudo apt-get install -y buildah
          else
            echo "Buildah already installed"
          fi
      - name: Login to repository
        run: |
          buildah login $REGISTRY -u ${{ gitea.actor }} -p ${{ secrets.ACCESS_TOKEN }}

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Build and tag
        run: |-
          echo "Building image ${REGISTRY}/${IMAGE_NAME}:${VERSION} / latest"
          buildah build --isolation=chroot --build-arg VERSION=${VERSION} -t katenary -f ./oci/katenary/Containerfile .
          buildah tag katenary ${REGISTRY}/${IMAGE_NAME}:${VERSION}
          buildah tag katenary ${REGISTRY}/${IMAGE_NAME}:latest

      - name: Push image
        run: |-
          buildah push ${REGISTRY}/${IMAGE_NAME}:${VERSION}
          buildah push ${REGISTRY}/${IMAGE_NAME}:latest