name: Build and Push Docker Images Base Workflow

on:
  workflow_call:
    inputs:
      CONTEXT:
        required: true
        type: string
      DOCKERFILE:
        required: true
        type: string
      IMAGE_NAME:
        required: true
        type: string

env:
  CONTEXT: ${{ inputs.CONTEXT }}
  DOCKERFILE: ${{ inputs.DOCKERFILE }}
  IMAGE_NAME: ${{ inputs.IMAGE_NAME }}
  PLATFORMS: linux/amd64,linux/arm64

jobs:
  set-vars:
    runs-on: ubuntu-latest
    steps:
      - name: Setting variables
        run: |
          echo "CONTEXT=${{ env.CONTEXT }}"
          echo "DOCKERFILE=${{ env.DOCKERFILE }}"
          echo "IMAGE_NAME=${{ env.IMAGE_NAME }}"
          echo "PLATFORMS=${{ env.PLATFORMS }}"
    outputs:
      CONTEXT: ${{ env.CONTEXT }}
      DOCKERFILE: ${{ env.DOCKERFILE }}
      IMAGE_NAME: ${{ env.IMAGE_NAME }}
      PLATFORMS: ${{ env.PLATFORMS }}

  build-and-push-images:
    needs: set-vars
    runs-on: ubuntu-latest
    permissions:
      contents: read # for actions/checkout to fetch code
      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
    services:
      registry:
        image: registry:2
        ports:
          - 5000:5000

    name: Build Service Image

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

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          driver-opts: network=host

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

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

      - name: Build Docker Metadata
        id: docker-metadata
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ vars.DOCKERHUB_USERNAME }}/${{ needs.set-vars.outputs.IMAGE_NAME }}
          flavor: |
            latest=auto
          tags: |
            type=ref,event=tag
            type=ref,event=pr
            type=sha,commit=${{ github.sha }}
            type=semver,pattern={{version}}
            type=raw,value=latest,enable={{is_default_branch}}

      - name: Build image for scanning
        uses: docker/build-push-action@v5
        with:
          context: ${{ needs.set-vars.outputs.CONTEXT }}
          file: ${{ needs.set-vars.outputs.DOCKERFILE }}
          push: true
          provenance: false
          tags: localhost:5000/dockle-examine-image:test
          platforms: ${{ needs.set-vars.outputs.PLATFORMS }}
          cache-from: type=gha,scope=${{ github.workflow }}
          cache-to: type=gha,mode=max,scope=${{ github.workflow }}

      - name: Pull Built Image for Scanning
        run: |
          docker pull localhost:5000/dockle-examine-image:test

      - name: Dockle - Examine Best Practices
        uses: davidjameshowell/dockle-action@ad7164c945d12d55ac5e639f91f0a5c708a4cdce
        with:
          image: localhost:5000/dockle-examine-image:test
          dockle-ignores: CIS-DI-0005 # Ignore `Enable Content trust for Docker`

      - name: Run Trivy vulnerability scanner - human readable output
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: localhost:5000/dockle-examine-image:test
          scan-type: 'image'
          format: 'table'
          exit-code: '0'
          ignore-unfixed: true
          vuln-type: 'os,library'
          severity: 'CRITICAL,HIGH'
          scanners: 'vuln,secret,config'
        env:
          TRIVY_NON_SSL: true

      - name: Run Trivy vulnerability scanner (sarif report)
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: localhost:5000/dockle-examine-image:test
          scan-type: 'image'
          format: 'sarif'
          exit-code: '0'
          ignore-unfixed: true
          vuln-type: 'os,library'
          severity: 'CRITICAL,HIGH'
          scanners: 'vuln,secret,config'
          output: 'trivy-results-os.sarif'
        env:
          TRIVY_NON_SSL: true

      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@v3
        with:
          sarif_file: 'trivy-results-os.sarif'

      - name: Push Service Image to repo
        # if: github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master'
        uses: docker/build-push-action@v5
        with:
          context: ${{ needs.set-vars.outputs.CONTEXT }}
          file: ${{ needs.set-vars.outputs.DOCKERFILE }}
          push: true
          provenance: false
          tags: ${{ steps.docker-metadata.outputs.tags }}
          labels: ${{ steps.docker-metadata.outputs.labels }}
          platforms: ${{ needs.set-vars.outputs.PLATFORMS }}
          cache-from: type=gha,scope=${{ github.workflow }}
          cache-to: type=gha,mode=max,scope=${{ github.workflow }}