name: Build and push multi-platform docker images

on:
  push:
    tags:
      - '^v[0-9]{2}\.[0-9]{2}(\.[0-9]{1,2})?([a-zA-Z0-9]*)?$'
  workflow_dispatch:
    inputs:
      version:
        description: 'Release version'
        required: true

      repository-name:
        description: 'Docker repository name'
        default: 'elementsproject'
        required: false

      platforms-to-build:
        description: 'List of platforms to build'
        default: 'linux/amd64,linux/arm64,linux/arm/v7'
        required: false
  
      push-latest:
        description: 'Push the latest tag also?'
        default: 'false'
        required: false

jobs:
  build:
    runs-on: ubuntu-latest

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

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

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

    - name: Log in to Docker Hub
      uses: docker/login-action@v3
      with:
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}

    - name: Set up values
      id: set-values
      run: |
        if [ "${{ github.event.inputs.version }}" != "" ]; then
          VERSION=${{ github.event.inputs.version }}
        elif [ "${{ github.ref_type }}" == "tag" ]; then
          VERSION=${{ github.ref_name }}
        else
          echo "No version provided and no tag found."
          exit 1
        fi
        echo "VERSION=$VERSION" >> $GITHUB_ENV

        if [ "${{ github.event.inputs.repository-name }}" != "" ]; then
          REPONAME=${{ github.event.inputs.repository-name }}
        else
          REPONAME="elementsproject"
        fi
        echo "REPONAME=$REPONAME" >> $GITHUB_ENV

        if [ "${{ github.event.inputs.platforms-to-build }}" != "" ]; then
          PLATFORMS=${{ github.event.inputs.platforms-to-build }}
        else
          PLATFORMS="linux/amd64,linux/arm64,linux/arm/v7"
        fi
        echo "PLATFORMS=$PLATFORMS" >> $GITHUB_ENV

        if [
          "${{ github.event.inputs.push-latest }}" == "true" ||
          ( "${{ github.ref_type }}" == "tag" && [[ ! "${{ env.VERSION }}" =~ rc ]] )
        ]; then
          PUSHLATEST="true"
        else
          PUSHLATEST="false"
        fi
        echo "PUSHLATEST=$PUSHLATEST" >> $GITHUB_ENV

    - name: Set Tags
      id: set-tags
      run: |
        TAGS="${{ env.REPONAME }}/lightningd:${{ env.VERSION }}"
        if [ "${{ env.PUSHLATEST }}" == "true" ]; then
          TAGS="$TAGS,${{ env.REPONAME }}/lightningd:latest"
        fi
        echo "TAGS=$TAGS" >> $GITHUB_ENV

    - name: Print GitHub Ref Values
      run: |
        echo "GITHUB REF TYPE: ${{ github.ref_type }}"
        echo "GITHUB REF NAME: ${{ github.ref_name }}"
        echo "EVENT INPUT VERSION: ${{ github.event.inputs.version }}"
        echo "EVENT INPUT REPO: ${{ github.event.inputs.repository-name }}"
        echo "EVENT INPUT PLATFORMS: ${{ github.event.inputs.platforms-to-build }}"
        echo "EVENT INPUT PUSH LATEST: ${{ github.event.inputs.push-latest }}"
        echo "VERSION ENV: ${{ env.VERSION }}"
        echo "REPO NAME: ${{ env.REPONAME }}"
        echo "PLATFORMS: ${{ env.PLATFORMS }}"
        echo "PUSH LATEST: ${{ env.PUSHLATEST }}"
        echo "TAGS: ${{ env.TAGS }}"

    - name: Build and push Docker image
      uses: docker/build-push-action@v5
      with:
        context: .
        push: true
        platforms: ${{ env.PLATFORMS }}
        tags: ${{ env.TAGS }}