name: Docker

on:
    push:
        branches: [main]
        tags: ["v*"]
    pull_request:
        branches: [main]
        paths:
            - "Dockerfile"
            - "docker-compose.yml"
            - "dev/docker-compose.yml"
            - "dev/sandbox/**"
            - ".github/workflows/docker.yml"
    workflow_dispatch:

concurrency:
    group: docker-${{ github.event.pull_request.number || github.ref }}
    cancel-in-progress: true

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

jobs:
    pr-smoke:
        name: PR Docker Smoke
        if: github.event_name == 'pull_request'
        runs-on: ubuntu-latest
        timeout-minutes: 25
        permissions:
            contents: read
        steps:
            - name: Checkout repository
              uses: actions/checkout@v4

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

            - name: Extract metadata (tags, labels)
              id: meta
              uses: docker/metadata-action@v5
              with:
                  images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
                  tags: |
                      type=ref,event=pr

            - name: Build smoke image
              uses: docker/build-push-action@v5
              with:
                  context: .
                  push: false
                  load: true
                  tags: zeroclaw-pr-smoke:latest
                  labels: ${{ steps.meta.outputs.labels }}
                  cache-from: type=gha
                  platforms: linux/amd64

            - name: Verify image
              run: docker run --rm zeroclaw-pr-smoke:latest --version

    publish:
        name: Build and Push Docker Image
        if: github.event_name == 'push'
        runs-on: [self-hosted, Linux, X64, lxc-ci]
        timeout-minutes: 25
        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: Log in to Container Registry
              uses: docker/login-action@v3
              with:
                  registry: ${{ env.REGISTRY }}
                  username: ${{ github.actor }}
                  password: ${{ secrets.GITHUB_TOKEN }}

            - name: Compute tags
              id: meta
              shell: bash
              run: |
                  set -euo pipefail
                  IMAGE="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}"
                  SHA_TAG="${IMAGE}:sha-${GITHUB_SHA::12}"

                  if [[ "${GITHUB_REF}" == refs/tags/* ]]; then
                    TAG_NAME="${GITHUB_REF#refs/tags/}"
                    TAGS="${IMAGE}:${TAG_NAME},${SHA_TAG}"
                  elif [[ "${GITHUB_REF}" == "refs/heads/main" ]]; then
                    TAGS="${IMAGE}:latest,${SHA_TAG}"
                  else
                    BRANCH_NAME="${GITHUB_REF#refs/heads/}"
                    BRANCH_NAME="${BRANCH_NAME//\//-}"
                    TAGS="${IMAGE}:${BRANCH_NAME},${SHA_TAG}"
                  fi

                  echo "tags=${TAGS}" >> "$GITHUB_OUTPUT"

            - name: Build and push Docker image
              uses: docker/build-push-action@v5
              with:
                  context: .
                  push: true
                  tags: ${{ steps.meta.outputs.tags }}
                  cache-from: type=gha
                  cache-to: type=gha,mode=max
                  platforms: ${{ startsWith(github.ref, 'refs/tags/') && 'linux/amd64,linux/arm64' || 'linux/amd64' }}