# Forgejo build + release for anwesen ([ANW-30]).
#
# The operator's Forgejo forge is the primary home (the GitHub mirror's
# release.yml under .github/ is the secondary). This workflow is the
# Forgejo-side counterpart: it builds the release binaries for both targets
# and publishes them to a Forgejo release.
#
# Unlike the GitHub workflow it is NOT driven by a release-published event.
# It runs on demand -- from the Forgejo UI ("Run workflow") or via the API:
#
#   POST /api/v1/repos/{owner}/{repo}/actions/workflows/build.yml/dispatches
#
# so a build can be triggered for a test without first cutting a release.
# The `tag` input names the release the assets attach to; `prerelease`
# defaults true so test runs land as a replaceable prerelease rather than a
# stable release. forgejo-release creates the release (from the checked-out
# sha) if it does not exist, and `override: true` lets a re-run replace the
# assets.
#
# Runner topology. There is one self-hosted runner registered `linux-amd64`
# with `:host` execution -- jobs run directly on the host, not in a
# container. The host already provides node, git, rustup/cargo, hurl, and the
# aarch64 cross linker, so the workflow uses them in place rather than
# installing anything (the host user has no passwordless sudo). Both targets
# build on this one amd64 host: x86_64 natively, aarch64 by cross-compilation.
name: build

on:
  workflow_dispatch:
    inputs:
      tag:
        description: Release tag the binaries attach to (created if absent).
        required: true
        default: nightly
      prerelease:
        description: Mark the release as a prerelease.
        type: boolean
        default: true

# forgejo-release uploads assets to a release in this repository.
permissions:
  contents: write

jobs:
  # Single test gate for both targets. The suite and the HTTP contract
  # harness are architecture-independent, so they run once, natively on the
  # amd64 host. Both build jobs depend on this, so a release never ships a
  # red build.
  test:
    name: test
    runs-on: linux-amd64
    steps:
      - name: Check out the workflow ref
        uses: actions/checkout@v4

      - name: Cache cargo registry, index, and target
        uses: https://github.com/Swatinem/rust-cache@v2

      - name: Run the Rust test suite
        run: cargo test --locked

      # The HTTP contract harness (tests/run-hurl.sh, per ADR-008) boots
      # `anwesen serve` and runs hurl against it -- headless, so it runs in CI.
      - name: Run the HTTP contract tests
        run: tests/run-hurl.sh

  build:
    name: ${{ matrix.label }}
    needs: test
    runs-on: linux-amd64
    strategy:
      # One target's failure should not cancel the other's build.
      fail-fast: false
      matrix:
        include:
          # amd64 Linux -- the deploy target. Built natively for the host.
          - target: x86_64-unknown-linux-gnu
            label: x86_64-linux
          # arm64 Linux -- cross-compiled on the same amd64 host. cross-rs
          # would need a container engine the host runner does not provide
          # (and cannot target apple-darwin from Linux anyway), so this uses
          # the rustup target plus the host's aarch64-linux-gnu-gcc linker.
          - target: aarch64-unknown-linux-gnu
            label: aarch64-linux
    env:
      # cargo picks the linker for the aarch64 target from this; the host
      # already provides aarch64-linux-gnu-gcc. Harmless for the amd64 target.
      CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER: aarch64-linux-gnu-gcc
    steps:
      - name: Check out the workflow ref
        uses: actions/checkout@v4

      - name: Cache cargo registry, index, and target
        uses: https://github.com/Swatinem/rust-cache@v2
        with:
          key: ${{ matrix.target }}

      # The host toolchain is rustup-managed; ensure the cross target's std
      # is present. Idempotent for the native target.
      - name: Add the Rust target
        run: rustup target add ${{ matrix.target }}

      - name: Build the release binary
        run: cargo build --release --locked --target ${{ matrix.target }}

      # forgejo-release uploads everything under the release dir, so the
      # staged name is the asset name -- make the target explicit. The tag
      # goes through env, not direct interpolation into the run body.
      - name: Stage the asset for its target
        env:
          TAG: ${{ inputs.tag }}
        run: |
          mkdir -p dist/release
          install -m 0755 "target/${{ matrix.target }}/release/anwesen" \
            "dist/release/anwesen-${TAG}-${{ matrix.label }}"

      - name: Publish the binary to the Forgejo release
        uses: https://code.forgejo.org/actions/forgejo-release@v2
        with:
          direction: upload
          url: ${{ env.GITHUB_SERVER_URL }}
          repo: ${{ github.repository }}
          token: ${{ secrets.GITHUB_TOKEN }}
          tag: ${{ inputs.tag }}
          sha: ${{ github.sha }}
          release-dir: dist/release
          prerelease: ${{ inputs.prerelease }}
          # A re-run for the same tag replaces the assets rather than failing.
          override: true