name: Build Docker images (GHCR)

on:
  push:
    branches: [master]
    paths:
      - 'RELEASE'
  workflow_dispatch:

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build:
    name: Build and push Docker images
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout
        uses: actions/checkout@v5

      - name: Determine tags
        id: tags
        env:
          REF: ${{ github.ref }}
          IMAGE: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
        run: |
          if [[ "$REF" == refs/tags/* ]]; then
            RELEASE=$(cat RELEASE)
            echo "minimal=${IMAGE}:${RELEASE}.minimal,${IMAGE}:minimal" >> "$GITHUB_OUTPUT"
            echo "busybox=${IMAGE}:${RELEASE}.busybox,${IMAGE}:busybox" >> "$GITHUB_OUTPUT"
            echo "full=${IMAGE}:${RELEASE},${IMAGE}:latest" >> "$GITHUB_OUTPUT"
          else
            DATETIME=$(date +%d%m%y%H%M%S)
            echo "minimal=${IMAGE}:${DATETIME}-devel.minimal,${IMAGE}:devel.minimal" >> "$GITHUB_OUTPUT"
            echo "busybox=${IMAGE}:${DATETIME}-devel.busybox,${IMAGE}:devel.busybox" >> "$GITHUB_OUTPUT"
            echo "full=${IMAGE}:${DATETIME}-devel,${IMAGE}:devel" >> "$GITHUB_OUTPUT"
          fi

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4

      - name: Login to GHCR
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v4
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push minimal
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile.minimal
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          no-cache: true
          tags: ${{ steps.tags.outputs.minimal }}

      - name: Build and push busybox
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile.busybox
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          no-cache: true
          tags: ${{ steps.tags.outputs.busybox }}

      - name: Build and push full
        uses: docker/build-push-action@v6
        with:
          context: .
          file: Dockerfile.full
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          no-cache: true
          tags: ${{ steps.tags.outputs.full }}

      - name: Delete untagged GHCR images
        if: github.event_name != 'pull_request'
        uses: actions/delete-package-versions@v5
        with:
          package-name: 3proxy
          package-type: container
          delete-only-untagged-versions: true