# Release builds for anwesen ([ANW-32], pattern from IT-86).
#
# Forgejo (carvers/anwesen on ap) is canonical for both code and releases.
# GitHub is only the build farm -- it has the macOS runners. Publishing is a
# single act on Forgejo: create a `v*` tag (or release) there, it mirrors to
# the GitHub mirror, and that pushed tag triggers this workflow. For each
# target the build job tests and builds the binary; a final publish job creates
# the GitHub release with every binary, then mirrors them back onto the
# matching Forgejo release. No manual "new release" step on GitHub.
name: release

on:
  push:
    tags: ['v*']
  workflow_dispatch:
    inputs:
      tag:
        description: Existing tag to (re)build
        required: true

# The publish job attaches binaries to the GitHub release it creates.
permissions:
  contents: write

env:
  # The Forgejo repo that receives the release assets (owner/name on ap).
  FORGEJO_REPO: carvers/anwesen
  FORGEJO_API: https://forge.crvrs.org/api/v1

jobs:
  build:
    name: ${{ matrix.label }}
    runs-on: ${{ matrix.runner }}
    strategy:
      # One target's failure should not cancel the others' builds.
      fail-fast: false
      matrix:
        include:
          # amd64 Linux -- the deploy target. Built natively on ubuntu-latest.
          - runner: ubuntu-latest
            label: x86_64-linux
          # arm64 Linux -- Graviton / Pi / ARM servers. Built natively.
          - runner: ubuntu-24.04-arm
            label: aarch64-linux
          # arm macOS -- aav's local machine. Built natively on Apple Silicon.
          - runner: macos-14
            label: aarch64-macos
    steps:
      - name: Check out the release tag
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.inputs.tag || github.ref_name }}

      # Stable channel; edition 2024 needs >= 1.85, and Cargo.toml pins the
      # MSRV at 1.95. Pin an explicit version here if a frozen release
      # toolchain is ever required.
      - name: Install the Rust toolchain
        uses: dtolnay/rust-toolchain@stable

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

      # The HTTP contract harness (tests/run-hurl.sh, per ADR-008) boots
      # `anwesen serve` and runs hurl against it. The contract is
      # arch-independent, so it runs once on the deploy target; the macOS
      # runner's stock bash is 3.2 and the harness needs bash 4+
      # (`shopt -s globstar`), which would only add fragility for no coverage.
      - name: Install hurl
        if: matrix.label == 'x86_64-linux'
        run: |
          curl -fsSL -o /tmp/hurl.deb \
            https://github.com/Orange-OpenSource/hurl/releases/download/8.0.0/hurl_8.0.0_amd64.deb
          sudo dpkg -i /tmp/hurl.deb

      # Test before building the artifact so a release never ships a red build.
      # The debug build here is what run-hurl.sh exercises.
      - name: Run the Rust test suite
        run: cargo test --locked

      - name: Run the HTTP contract tests
        if: matrix.label == 'x86_64-linux'
        run: tests/run-hurl.sh

      - name: Build the release binary
        run: cargo build --release --locked

      # The runner is native to its target, so target/release/anwesen is the
      # target binary (already stripped via the release profile). Name it so
      # the target is unambiguous, then gzip it -- ap keeps every release and
      # the raw binaries are the bulk of that, so assets ship compressed.
      - name: Name and compress the asset for its target
        run: |
          asset="anwesen-${{ github.event.inputs.tag || github.ref_name }}-${{ matrix.label }}"
          install -m 0755 target/release/anwesen "$asset"
          gzip -9 "$asset"

      - name: Stash the binary for the publish job
        uses: actions/upload-artifact@v4
        with:
          name: ${{ matrix.label }}
          path: anwesen-*-${{ matrix.label }}.gz
          if-no-files-found: error

  publish:
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Collect every target's binary
        uses: actions/download-artifact@v4
        with:
          path: dist
          merge-multiple: true

      - name: Create the GitHub release with all binaries
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ github.event.inputs.tag || github.ref_name }}
          files: dist/*

      # Forgejo is canonical: push the same binaries onto the matching Forgejo
      # release. Find the release by tag; create it if the tag has no release
      # object yet; then upload each binary as an asset.
      - name: Mirror binaries to the Forgejo release
        env:
          TAG: ${{ github.event.inputs.tag || github.ref_name }}
          TOKEN: ${{ secrets.FORGEJO_RELEASE_TOKEN }}
        run: |
          set -euo pipefail
          auth="Authorization: token $TOKEN"
          base="$FORGEJO_API/repos/$FORGEJO_REPO/releases"

          # Look up the Forgejo release for this tag. Forgejo answers 404 when
          # the tag has no release object yet, so branch on the status code:
          # `curl -f` would exit 22 on that 404 and, under pipefail, abort the
          # step before the create path could run.
          body=$(mktemp)
          code=$(curl -sS -o "$body" -w '%{http_code}' -H "$auth" "$base/tags/$TAG")
          case "$code" in
            200) id=$(jq -r '.id' "$body") ;;
            404) id=$(curl -fsS -H "$auth" -H 'Content-Type: application/json' \
                   -X POST "$base" \
                   -d "{\"tag_name\":\"$TAG\",\"name\":\"$TAG\"}" | jq -r '.id') ;;
            *)   echo "Forgejo release lookup failed: HTTP $code" >&2
                 cat "$body" >&2
                 exit 1 ;;
          esac

          for f in dist/*; do
            curl -fsS -H "$auth" \
              -F "attachment=@$f;filename=$(basename "$f")" \
              "$base/$id/assets?name=$(basename "$f")" >/dev/null
            echo "uploaded $(basename "$f")"
          done