name: Example CI

on:
  workflow_dispatch:
    inputs:
      image-tag: 
        description: "Tag for image"
        default: "latest" # Define Docker image tag
        type: string
        required: true

jobs:
  lint:
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout source code 
        uses: actions/checkout@v4
      - name: Install Python 3.10.12
        uses: actions/setup-python@v4
        with:
          python-version: '3.10.12'
      - name: Install tox
        run: pip install tox
      - name: Run lint
        run: |
          cd backend
          tox -e lint
  
  unit-test:
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout source code 
        uses: actions/checkout@v4
      - name: Install Python 3.10.12
        uses: actions/setup-python@v4
        with:
          python-version: '3.10.12'
      - name: Install tox
        run: pip install tox
      - name: Run unit tests
        run: |
          cd backend
          tox -e unit

  build-image:
    runs-on: ubuntu-22.04
    needs: [lint, unit-test]  # Specify that build-image depends on lint and unit-test
    steps:
      - name: Checkout source code 
        uses: actions/checkout@v4

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

      - name: Build and export
        uses: docker/build-push-action@v5 # Build Docker image via Dockerfile
        with:
          context: backend # Directory of Dockerfile
          tags: ${{ vars.IMAGE }}:${{ inputs.image-tag }} 
          outputs: type=docker,dest=/tmp/image.tar

      - name: Upload artifact
        uses: actions/upload-artifact@v3
        with:
          name: image
          path: /tmp/image.tar
  
  integration-tests:
    runs-on: ubuntu-22.04
    needs: [build-image]
    steps:
      - name: Download artifact
        uses: actions/download-artifact@v3
        with:
          name: image
          path: /tmp
      - name: Load image
        run: |
          docker load --input /tmp/image.tar
          docker image ls -a
          docker run -p 8143:8143 -d ${{ vars.IMAGE }}:${{ inputs.image-tag }} 
          sleep 10
          curl --fail 'http://localhost:8143/'
  
  publish-image:
    runs-on: ubuntu-22.04
    needs: [integration-tests, vulnerability-scan]
    steps:
      - name: Download artifact
        uses: actions/download-artifact@v3
        with:
          name: image
          path: /tmp
      - name: Load image
        run: |
          docker load --input /tmp/image.tar
          docker image ls -a
      - name: Login to DockerHub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.REGISTRY_USER }}
          password: ${{ secrets.REGISTRY_TOKEN }}
      - name: Docker push image to DockerHub
        run: |
          docker push ${{ vars.IMAGE }}:${{ inputs.image-tag }}