name: Build & Publish
# Fork build pipeline for the "zo" forge (git.ziemlichoptimal.de/uberbau/brewlog).
# On every push to `dev` this checks the code, then builds the container and
# publishes it to this forge's own container registry. The moby homelab
# (git.ziemlichoptimal.de/moby/cluster-moby) deploys the resulting image via
# Flux GitOps — this pipeline does NOT deploy anything itself (the upstream
# Fly.io deploy step was removed).
on:
  push:
    branches: ["dev"]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  # This forge's built-in container registry, same host as the git server.
  REGISTRY: git.ziemlichoptimal.de
  IMAGE: git.ziemlichoptimal.de/uberbau/brewlog

jobs:
  check:
    name: Check
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      # The repo's mise.toml pulls the whole dev toolchain (tailwind, cargo-watch,
      # flyctl, shellcheck, ...), and mise resolves most of those via the GitHub
      # API — which 401s on this runner (it has no github.com token), failing the
      # entire install. CI only needs the pinned Rust toolchain, so install it
      # directly via mise (rust resolves through rustup, no GitHub API).
      - name: Install Rust toolchain
        uses: https://github.com/jdx/mise-action@v2
        with:
          install_args: rust

      - name: Cache Cargo artifacts
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry/index/
            ~/.cargo/registry/cache/
            ~/.cargo/git/db/
            target/
          key: cargo-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}-check
          restore-keys: |
            cargo-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}-
            cargo-${{ runner.os }}-

      # No sudo on the node:20-bookworm runner image (job runs as root). mold is
      # required by .cargo/config.toml's linker flag (-fuse-ld=mold).
      - name: Install system dependencies
        run: apt-get update && apt-get install -y --no-install-recommends clang lld mold pkg-config

      - name: Check formatting
        run: cargo fmt -- --check

      - name: Clippy
        run: cargo clippy -- -D warnings

      - name: Run tests
        run: cargo test -- --show-output

  build:
    name: Build & Publish
    runs-on: ubuntu-latest
    needs: [check]
    steps:
      - name: Checkout
        uses: actions/checkout@v4

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

      - name: Login to the forge container registry
        uses: docker/login-action@v3
        with:
          # Forgejo auto-provides GITHUB_TOKEN to the job; it can push packages
          # for this repo's owner (uberbau). No external registry / PAT needed.
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push container
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          # `dev` is the moving branch tag; the commit SHA is the immutable
          # reference. The moby Deployment pins the image by digest, so bump it
          # there per release (a floating tag never re-rolls the pod on its own).
          tags: |
            ${{ env.IMAGE }}:${{ github.sha }}
            ${{ env.IMAGE }}:dev
          cache-from: type=gha
          cache-to: type=gha,mode=max