name: Docker Cloud Build

on:
  push:
    branches: [ "master" ]
    tags: [ 'v*.*.*' ]
    paths:
      - 'backend/**'
      - 'frontend/**'
      - 'docker/**'
      - '.github/workflows/docker-publish.yml'
  pull_request:
    branches: [ "master" ]
    paths:
      - 'backend/**'
      - 'frontend/**'
      - 'docker/**'
      - '.github/workflows/docker-publish.yml'

env:
  REGISTRY: src.d3v.ac
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build:
    name: Build & Publish Image
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

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

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

      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20

      - name: Install Frontend Dependencies & Build
        run: |
          total_ram_mb=$(awk '/MemTotal/ { printf "%d", $2/1024 }' /proc/meminfo)
          if [ "$total_ram_mb" -lt 2048 ]; then
            node_mem=768
          elif [ "$total_ram_mb" -lt 4096 ]; then
            node_mem=1536
          else
            node_mem=3072
          fi
          echo "RAM: ${total_ram_mb}MB — setting Node.js max to ${node_mem}MB"
          export NODE_OPTIONS="--max-old-space-size=${node_mem}"
          cd frontend
          npm install -g yarn
          yarn install --frozen-lockfile
          yarn locale-compile
          yarn build

      - name: Log into registry ${{ env.REGISTRY }}
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.FORGEJO_TOKEN }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/master' }}
            type=semver,pattern={{version}}
            type=sha

      - name: Lowercase IMAGE_NAME
        run: |
          echo "IMAGE_NAME_LOWER=${IMAGE_NAME,,}" >> $GITHUB_ENV

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: docker/Dockerfile
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          platforms: linux/amd64
          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME_LOWER }}:buildcache
          cache-to: ${{ github.event_name != 'pull_request' && format('type=registry,ref={0}/{1}:buildcache,mode=max', env.REGISTRY, env.IMAGE_NAME_LOWER) || '' }}
