name: Build and Publish Docker Image (Semantic Cache)

# Builds the :semantic variant that includes sentence-transformers + CPU torch
# and the pre-baked all-MiniLM-L6-v2 embedding model (~500 MB larger than lean).
# Tags mirror the lean workflow but carry a -semantic suffix, e.g.:
#   ghcr.io/nomyo-ai/nomyo-router:latest-semantic
#   ghcr.io/nomyo-ai/nomyo-router:0.7.0-semantic
#   ghcr.io/nomyo-ai/nomyo-router:0.7-semantic

on:
  push:
    branches:
      - main
    tags:
      - "v*.*.*"
  workflow_dispatch:

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

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

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

      - name: Set up QEMU (for multi-arch builds)
        uses: docker/setup-qemu-action@v3

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

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            # Versioned semantic tags on git tags (e.g. v0.7.0 → 0.7.0-semantic, 0.7-semantic)
            type=semver,pattern={{version}}-semantic
            type=semver,pattern={{major}}.{{minor}}-semantic
            # latest-semantic only on main branch pushes
            type=raw,value=latest-semantic,enable=${{ github.ref == 'refs/heads/main' }}
            # SHA-tagged for traceability
            type=sha,prefix=sha-,suffix=-semantic

      - name: Build and push semantic Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          build-args: |
            SEMANTIC_CACHE=true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max