name: Build and Push Docker Image

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read

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

      - name: Lint Dockerfile with Hadolint
        uses: hadolint/hadolint-action@v3.1.0
        with:
          dockerfile: Dockerfile

      - name: Lint Shell Scripts with ShellCheck
        uses: ludeeus/action-shellcheck@master

      # Set up Docker Buildx for multi-architecture builds
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      # Cache Docker layers for faster builds
      - name: Cache Docker Layers
        uses: actions/cache@v3
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-latest
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Log in to Docker Hub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Log into registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and Push Docker Image
        uses: docker/build-push-action@v4
        with:
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          tags: |
            ${{ secrets.DOCKER_USERNAME }}/docker-bitlbee:latest
            ghcr.io/${{ github.repository_owner }}/docker-bitlbee:latest
          cache-from: type=gha
          cache-to: type=gha,mode=max
          push: ${{ github.event_name != 'pull_request' }}

      - name: Scan Docker Image for Vulnerabilities with Trivy
        uses: aquasecurity/trivy-action@master
        with:
          image-ref: ${{ secrets.DOCKER_USERNAME }}/docker-bitlbee:latest
          format: "table"
          ignore-unfixed: true
          vuln-type: "os,library"
          severity: "CRITICAL,HIGH"

      - name: Upload Trivy Report
        uses: actions/upload-artifact@v3
        with:
          name: trivy-scan-results
          path: trivy-results.json