name: docker-build-push

on:
  push:
    branches: [main]
  workflow_dispatch:

jobs:
  build-push-deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      # act_runner bind-mounts the admin host's real Docker socket into every
      # job container (Docker-outside-of-Docker, not a nested daemon), so
      # `docker` here talks straight to the host's daemon — no separate
      # dockerd to start. The Dockerfile's builder stage runs `meson test`,
      # so a failing test fails this build before anything gets pushed.
      - name: Build, test, and push image
        env:
          REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
        run: |
          SHA="${{ github.sha }}"
          IMAGE="gitea.blairhaus.net/pmb/finger"

          docker build -t "$IMAGE:$SHA" -t "$IMAGE:latest" .
          printf '%s' "$REGISTRY_TOKEN" | docker login gitea.blairhaus.net -u pmb --password-stdin
          docker push "$IMAGE:$SHA"
          docker push "$IMAGE:latest"
          docker logout gitea.blairhaus.net

          echo "pushed $IMAGE:$SHA and $IMAGE:latest"

      # Deploy: hop into the admin host itself (job containers can only reach
      # host.docker.internal directly), then from there reuse admin's own
      # already-configured `ssh mammut`/`ssh bsd` aliases to reach the two
      # real deploy targets.
      - name: Deploy to mammut and bsd
        env:
          ADMIN_HOST_SSH_KEY: ${{ secrets.ADMIN_HOST_SSH_KEY }}
        run: |
          mkdir -p ~/.ssh
          printf '%s\n' "$ADMIN_HOST_SSH_KEY" > ~/.ssh/id_ed25519
          chmod 600 ~/.ssh/id_ed25519
          ssh-keyscan -H host.docker.internal >> ~/.ssh/known_hosts 2>/dev/null

          scp -i ~/.ssh/id_ed25519 update-fingerd.sh pmb@host.docker.internal:/tmp/update-fingerd.sh

          ssh -i ~/.ssh/id_ed25519 pmb@host.docker.internal bash -s <<'EOF'
          set -euo pipefail
          ssh mammut "cd ~/finger && docker compose pull && docker compose up -d" < /dev/null
          ssh bsd 'sh -s' < /tmp/update-fingerd.sh
          rm -f /tmp/update-fingerd.sh
          EOF

          echo "deployed to mammut + bsd"