name: build image

on:
  push:
    branches:
      - main

jobs:
  release_tag:
    runs-on: ubuntu-latest
    outputs:
      release: steps.create_release.outputs.release
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Get latest release and create new release
        id: create_release
        shell: bash
        run: |
          # Get latest release.
          latest_release=$(curl -s https://git.smail.koeln/api/v1/repos/homelab/docker-ownDynDNS-netcup/releases\?limit\=1 | jq -r '.[] | .tag_name')

          # Cut release into year, month and counter.
          year=$(echo $latest_release | awk -F '.' '//{print $1}')
          month=$(echo $latest_release | awk -F '.' '//{print $2}')
          counter=$(echo $latest_release | awk -F '.' '//{print $3}')

          # increase the counter, if the release is from the same year and month
          if [[ $(date +'%Y') == $year ]] && [[ $(date +'%m') == $month ]]; then
            ((counter++));
          # else reset counter
          else
            counter=1;
          fi

          # Create 
          new_release=$(date +'%Y').$(date +'%m').$counter
          echo "release=$new_release">> $GITHUB_OUTPUT
          echo "Release $new_release successfully set"

  build:
    runs-on: ubuntu-latest
    needs: release_tag
    env:
      release_tag: ${{needs.release_tag.outputs.release}}
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USER }}
          password: ${{ secrets.DOCKER_ACCESS_TOKEN }}

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          endpoint: tcp://forgejo-docker-in-docker-1:2375
          platforms: linux/amd64,linux/arm64,linux/arm/v7

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: ./docker-build/
          file: ./docker-build/Dockerfile
          platforms: linux/amd64,linux/arm64,linux/arm/v7
          push: true
          cleanup: true
          tags: |
            ${{ secrets.DOCKER_USER }}/docker-owndyndns-netcup:${{needs.release_tag.outputs.release}}
            ${{ secrets.DOCKER_USER }}/docker-owndyndns-netcup:latest