name: Build and Push Docker Image

on:
  push:
    branches:
      - main
  workflow_dispatch:
    inputs:
      tag_name:
        description: "Custom tag name for the Docker image"
        required: false
        default: ""

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v2
      
    - name: Setup Node.js for Building Frontend
      uses: actions/setup-node@v2
      with:
        node-version: '18'
        
    - name: Install Dependencies and Build Frontend
      run: |
        cd frontend
        npm install
        npm run build

    - name: Setup Docker Buildx
      uses: docker/setup-buildx-action@v1
      
    - name: Set up QEMU
      uses: docker/setup-qemu-action@v1

    - name: Login to Docker Registry
      uses: docker/login-action@v1
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Lowercase repository owner
      id: lowercase_repo_owner
      run: echo "REPO_OWNER=$(echo ${{ github.repository_owner }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV

    - name: Determine Docker image tag
      id: tag
      run: |
        if [ "${{ github.event_name }}" == "workflow_dispatch" ] && [ -n "${{ github.event.inputs.tag_name }}" ]; then
          echo "IMAGE_TAG=${{ github.event.inputs.tag_name }}" >> $GITHUB_ENV
        else
          echo "IMAGE_TAG=${{ github.run_id }}" >> $GITHUB_ENV
        fi

    - name: Build and Push Docker image
      uses: docker/build-push-action@v2
      with:
        context: .
        file: ./docker/Dockerfile
        push: true
        tags: ghcr.io/${{ env.REPO_OWNER }}/ssh-project:${{ env.IMAGE_TAG }}

    - name: Post-build clean-up
      run: docker system prune -af