name: Release

# Publishes binary archives to the GitHub release for a version tag.
# Docker images are published separately by docker.yml on the same tag.

on:
  push:
    tags: ["v*.*.*"]
  # Manual re-run (e.g. after a workflow fix) — must be dispatched from a tag ref.
  workflow_dispatch:

permissions:
  contents: write

jobs:
  binaries:
    runs-on: ubuntu-latest
    steps:
      - name: Guard non-tag dispatch
        if: github.event_name == 'workflow_dispatch' && !startsWith(github.ref, 'refs/tags/v')
        run: |
          echo "::error::Manual runs must be dispatched from a v*.*.* tag ref (use the 'Run workflow' ref selector)."
          exit 1

      - name: Checkout
        uses: actions/checkout@v4
        with:
          # Full history + tags, needed to diff against the previous release tag
          fetch-depth: 0

      - name: Check tag matches cmd/root.go version
        run: |
          TAG_VERSION="${GITHUB_REF_NAME#v}"
          CODE_VERSION=$(sed -nE 's/^[[:space:]]*version[[:space:]]*=[[:space:]]*"([0-9]+\.[0-9]+\.[0-9]+)".*/\1/p' cmd/root.go)
          echo "tag=v${TAG_VERSION} code=${CODE_VERSION}"
          if [ "$TAG_VERSION" != "$CODE_VERSION" ]; then
            echo "::error::Git tag v${TAG_VERSION} does not match version \"${CODE_VERSION}\" in cmd/root.go. Bump cmd/root.go before tagging."
            exit 1
          fi

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version: "1.24"
          cache: true

      - name: Run unit tests
        run: go test -count=1 ./...

      - name: Build release binaries
        run: |
          VERSION="${GITHUB_REF_NAME#v}"
          mkdir -p dist
          for GOOS in darwin linux windows; do
            for GOARCH in amd64 386 arm64; do
              if [ "$GOOS" = "darwin" ] && [ "$GOARCH" = "386" ]; then
                continue
              fi
              BIN="openserp"
              if [ "$GOOS" = "windows" ]; then
                BIN="openserp.exe"
              fi
              rm -f "$BIN"
              echo "Building ${GOOS}/${GOARCH}..."
              CGO_ENABLED=0 GOOS="$GOOS" GOARCH="$GOARCH" \
                go build -trimpath -ldflags="-s -w" -o "$BIN" .
              tar --create --gzip --file="dist/openserp-${GOOS}-${GOARCH}-${VERSION}.tgz" "$BIN"
              rm -f "$BIN"
            done
          done
          ls -lh dist/

      # Most changes land directly on main without PRs, and GitHub's
      # auto-generated notes only list merged PRs — so build the changelog
      # from commit subjects since the previous tag. Auto-notes stay enabled
      # below for the compare link and occasional contributor PR credits.
      - name: Generate commit changelog
        run: |
          PREV_TAG=$(git describe --tags --abbrev=0 "${GITHUB_REF_NAME}^" 2>/dev/null || true)
          {
            echo "## Changes"
            echo ""
            if [ -n "$PREV_TAG" ]; then
              echo "Commits since ${PREV_TAG}:"
              echo ""
              git log --no-merges --pretty='- %s' "${PREV_TAG}..${GITHUB_REF_NAME}"
            else
              git log --no-merges --pretty='- %s' "${GITHUB_REF_NAME}"
            fi
          } > release_notes.md
          cat release_notes.md

      # Creates the release if it doesn't exist, or attaches the archives to
      # an existing one (e.g. a release drafted manually in the GitHub UI).
      - name: Create GitHub release and upload binaries
        uses: softprops/action-gh-release@v2
        with:
          files: dist/*.tgz
          body_path: release_notes.md
          generate_release_notes: true