name: Build and push Docker image

on:
  push:
    tags:
      - "v*"
  pull_request:
    branches: [ "main" ]
  workflow_dispatch: {}

env:
  REGISTRY: cr.nym.sh
  # Default image path: cr.nym.sh/<owner>/tshock
  IMAGE_NAME: cr.nym.sh/${{ github.repository_owner }}/tshock

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

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

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

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

      # Only log in (and push) when not a PR from a fork.
      - name: Log in to registry
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ secrets.REGISTRY_USERNAME }}
          password: ${{ secrets.REGISTRY_PASSWORD }}

      - name: Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ env.IMAGE_NAME }}
          tags: |
            # When you push a git tag like v5.2.4 -> publish "5.2.4"
            type=semver,pattern={{version}}
            # latest for main branch
            type=raw,value=latest,enable={{is_default_branch}}
            # short sha tag for traceability
            type=sha,format=short

      - name: Build (and push)
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            TSHOCK_VERSION=5.2.4
            TERRARIA_VERSION=1.4.4.9