name: Release

# Build per-platform binaries in a matrix, then publish the GitHub release ONCE
# from a single job. The matrix used to call `softprops/action-gh-release`
# concurrently — three jobs racing to create/finalize the same release, which
# exhausted the action's finalize retries and dropped whole platforms' assets.
# The matrix now only uploads workflow artifacts; `publish_release` is the sole
# writer of the release (no race).
#
# Triggers:
#   - push of a v* tag (normal release)
#   - workflow_dispatch with an explicit `tag` (re-publish a past tag without
#     re-cutting it; resolves the same `${{ inputs.tag || github.ref_name }}`)

on:
  push:
    tags:
      - "v*"
  workflow_dispatch:
    inputs:
      tag:
        description: "Tag to (re)publish (e.g. v0.7.0). Required for manual dispatches."
        required: true
        type: string

jobs:
  build_release:
    name: Build ${{ matrix.asset_name }}
    runs-on: ${{ matrix.runner }}
    permissions:
      contents: read
    strategy:
      fail-fast: false
      matrix:
        include:
          - runner: ubuntu-latest
            asset_name: omnigraph-linux-x86_64
          - runner: macos-14
            asset_name: omnigraph-macos-arm64
          - runner: windows-latest
            asset_name: omnigraph-windows-x86_64
    env:
      CARGO_TERM_COLOR: always
    steps:
      - name: Checkout source
        uses: actions/checkout@v5.0.1
        with:
          ref: ${{ inputs.tag || github.ref_name }}

      - name: Install Linux dependencies
        if: runner.os == 'Linux'
        run: |
          sudo apt-get update
          sudo apt-get install -y protobuf-compiler libprotobuf-dev

      - name: Install macOS dependencies
        if: runner.os == 'macOS'
        run: brew install protobuf

      - name: Install Windows dependencies
        if: runner.os == 'Windows'
        run: choco install protoc -y

      - name: Install Rust stable
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: stable

      - name: Cache Rust build data
        uses: Swatinem/rust-cache@v2
        with:
          workspaces: |
            . -> target

      - name: Build release binaries
        run: cargo build --release --locked -p omnigraph-cli -p omnigraph-server

      - name: Package Unix release archive
        if: runner.os != 'Windows'
        run: |
          mkdir -p release
          install -m 0755 target/release/omnigraph release/omnigraph
          install -m 0755 target/release/omnigraph-server release/omnigraph-server
          tar -C release -czf "${{ matrix.asset_name }}.tar.gz" omnigraph omnigraph-server
          shasum -a 256 "${{ matrix.asset_name }}.tar.gz" > "${{ matrix.asset_name }}.sha256"

      - name: Package Windows release archive
        if: runner.os == 'Windows'
        run: |
          New-Item -ItemType Directory -Force -Path release | Out-Null
          Copy-Item target/release/omnigraph.exe release/omnigraph.exe
          Copy-Item target/release/omnigraph-server.exe release/omnigraph-server.exe
          Compress-Archive -Path release/omnigraph.exe, release/omnigraph-server.exe -DestinationPath "${{ matrix.asset_name }}.zip" -Force
          $hash = (Get-FileHash "${{ matrix.asset_name }}.zip" -Algorithm SHA256).Hash.ToLowerInvariant()
          "$hash  ${{ matrix.asset_name }}.zip" | Out-File -FilePath "${{ matrix.asset_name }}.sha256" -Encoding ascii
          New-Item -ItemType Directory -Force -Path verify | Out-Null
          Expand-Archive -Path "${{ matrix.asset_name }}.zip" -DestinationPath verify -Force
          $items = Get-ChildItem -Path verify -File
          if ($items.Count -ne 2 -or !(Test-Path verify/omnigraph.exe) -or !(Test-Path verify/omnigraph-server.exe)) {
            throw "Windows release archive is missing expected binaries"
          }

      # Upload artifacts only — the single `publish_release` job attaches them to
      # the release, so no two jobs ever write the release concurrently.
      - name: Upload build artifact
        uses: actions/upload-artifact@v4
        with:
          name: ${{ matrix.asset_name }}
          path: |
            ${{ matrix.asset_name }}.*
          if-no-files-found: error
          retention-days: 1

  publish_release:
    name: Publish GitHub release
    needs: build_release
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Download all build artifacts
        uses: actions/download-artifact@v4
        with:
          path: dist
          merge-multiple: true

      - name: Publish release (single writer — no matrix race)
        uses: softprops/action-gh-release@v2.5.0
        with:
          tag_name: ${{ inputs.tag || github.ref_name }}
          files: dist/**
          overwrite_files: true

  update_homebrew_tap:
    name: Update Homebrew tap
    needs: publish_release
    runs-on: ubuntu-latest
    permissions:
      contents: read
    env:
      HOMEBREW_TAP_TOKEN: ${{ secrets.HOMEBREW_TAP_TOKEN }}
      RELEASE_TAG: ${{ inputs.tag || github.ref_name }}
    steps:
      - name: Skip if HOMEBREW_TAP_TOKEN is not configured
        if: env.HOMEBREW_TAP_TOKEN == ''
        run: |
          echo "HOMEBREW_TAP_TOKEN is not set; skipping Homebrew tap update."
          echo "HOMEBREW_TAP_SKIP=1" >> "$GITHUB_ENV"

      - name: Checkout source
        if: env.HOMEBREW_TAP_SKIP != '1'
        uses: actions/checkout@v5.0.1
        with:
          ref: ${{ env.RELEASE_TAG }}

      - name: Checkout Homebrew tap
        if: env.HOMEBREW_TAP_SKIP != '1'
        uses: actions/checkout@v5.0.1
        with:
          repository: ModernRelay/homebrew-tap
          token: ${{ secrets.HOMEBREW_TAP_TOKEN }}
          path: homebrew-tap

      - name: Update formula from release assets
        if: env.HOMEBREW_TAP_SKIP != '1'
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          ./scripts/update-homebrew-formula.sh "${RELEASE_TAG}" homebrew-tap/Formula/omnigraph.rb

      # Diagnostic only: brew is not on PATH on the ubuntu runner by default, so
      # set it up explicitly. Both this setup and the audit below are best-effort
      # canaries, not gates — continue-on-error on each keeps a failed/flaky brew
      # (the action is pinned to a moving @master ref) from skipping the actual
      # tap publish below. The formula is correct by construction
      # (update-homebrew-formula.sh), so brew tooling must never block the push.
      - name: Set up Homebrew
        if: env.HOMEBREW_TAP_SKIP != '1'
        continue-on-error: true
        uses: Homebrew/actions/setup-homebrew@master

      - name: Audit generated formula
        if: env.HOMEBREW_TAP_SKIP != '1'
        continue-on-error: true
        run: |
          # Audit the checked-out tap by name (brew audit rejects bare paths
          # and needs tap context). Symlink the checkout into Homebrew's Taps
          # tree so `modernrelay/tap/omnigraph` resolves to it. Offline audit
          # (no --online) keeps it deterministic; it still catches the
          # ComponentsOrder/structure class of problems.
          tap_dir="$(brew --repository)/Library/Taps/modernrelay/homebrew-tap"
          mkdir -p "$(dirname "$tap_dir")"
          ln -sfn "$PWD/homebrew-tap" "$tap_dir"
          brew audit --strict modernrelay/tap/omnigraph

      - name: Commit and push formula update
        if: env.HOMEBREW_TAP_SKIP != '1'
        working-directory: homebrew-tap
        run: |
          if git diff --quiet -- Formula/omnigraph.rb; then
            echo "Formula already up to date"
            exit 0
          fi

          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add Formula/omnigraph.rb
          git commit -m "Update Omnigraph formula to ${RELEASE_TAG}"
          git push origin HEAD:main

  smoke_windows_installer:
    name: Smoke Windows installer
    needs: publish_release
    if: ${{ inputs.tag != '' || startsWith(github.ref, 'refs/tags/v') }}
    runs-on: windows-latest
    permissions:
      contents: read
    env:
      RELEASE_TAG: ${{ inputs.tag || github.ref_name }}
    steps:
      - name: Checkout source
        uses: actions/checkout@v5.0.1
        with:
          ref: ${{ env.RELEASE_TAG }}

      - name: Install from tagged release
        run: ./scripts/install.ps1 -Version "$env:RELEASE_TAG" -InstallDir "$env:RUNNER_TEMP/omnigraph-bin"

      - name: Smoke installed binaries
        run: |
          & "$env:RUNNER_TEMP/omnigraph-bin/omnigraph.exe" version
          & "$env:RUNNER_TEMP/omnigraph-bin/omnigraph-server.exe" --help