name: Build Prowlarr Container

on:
  push:
    branches:
      - main
      - develop
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Set build variables
        id: vars
        run: |
          # Date ISO 8601
          echo "build_date=$(date -u +%Y-%m-%dT%H:%M:%S%z)" >> "$GITHUB_OUTPUT"

          # Short SHA
          echo "sha_short=$(echo ${GITHUB_SHA} | cut -c1-7)" >> "$GITHUB_OUTPUT"

          # Prowlarr version from upstream API
          PROWLARR_BRANCH="develop"
          if [ "${GITHUB_REF_NAME}" = "main" ]; then
            PROWLARR_BRANCH="master"
          fi
          echo "prowlarr_branch=${PROWLARR_BRANCH}" >> "$GITHUB_OUTPUT"

          PROWLARR_VERSION=$(curl -sL "https://prowlarr.servarr.com/v1/update/${PROWLARR_BRANCH}/changes?runtime=netcore&os=linuxmusl" | jq -r '.[0].version')
          echo "prowlarr_version=${PROWLARR_VERSION}" >> "$GITHUB_OUTPUT"

          # Image name
          REGISTRY="${{ vars.OCI_REGISTRY }}"
          # Remove trailing slash if present
          REGISTRY="${REGISTRY%/}"
          echo "image_name=${REGISTRY}/prowlarr" >> "$GITHUB_OUTPUT"

      - name: Login to OCI Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ vars.OCI_REGISTRY }}
          username: ${{ vars.OCI_USERNAME }}
          password: ${{ vars.OCI_PASSWORD }}

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          push: true
          build-args: |
            BUILD_DATE=${{ steps.vars.outputs.build_date }}
            VERSION=${{ steps.vars.outputs.prowlarr_version }}-custom
            PROWLARR_BRANCH=${{ steps.vars.outputs.prowlarr_branch }}
          tags: |
            ${{ steps.vars.outputs.image_name }}:latest
            ${{ steps.vars.outputs.image_name }}:${{ steps.vars.outputs.sha_short }}
            ${{ steps.vars.outputs.image_name }}:${{ steps.vars.outputs.prowlarr_version }}-custom
          cache-from: type=gha
          cache-to: type=gha,mode=max