name: Build

on:
  push:
    branches: [main]
  pull_request:
  workflow_dispatch:

# A newer push to the same ref makes an in-flight build obsolete.
concurrency:
  group: build-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  build:
    name: ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      # Let both platforms finish, so a failure on one still reports the other.
      fail-fast: false
      matrix:
        include:
          # The .sh scripts are run through `bash` because a checkout made on
          # Windows does not carry the executable bit, so ./build-*.sh would
          # come back as "Permission denied" on the Linux runner.
          - os: ubuntu-latest
            build_linux: bash build-linux-x86_64.sh
          - os: windows-latest
            build_windows: ./build-win-x86_64.bat

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod
          cache: true

      - name: Set up Node
        uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: npm
          cache-dependency-path: frontend/package-lock.json

      # --frontend builds the Vue app inside the script. The second call omits
      # it: the frontend is platform independent and dist/ is already built.
      - name: Build Linux (amd64)
        run: ${{ matrix.build_linux }} --frontend

      - name: Build Windows (amd64)
        run: ${{ matrix.build_windows }}

      - name: Upload binaries
        uses: actions/upload-artifact@v4
        with:
          name: nukumizu-binaries-${{ matrix.os }}
          path: |
            nukumizu-linux-amd64
            nukumizu-windows-amd64.exe
          if-no-files-found: error

      # The binaries read frontend/dist at runtime (os.DirFS in web/embed.go),
      # they do not embed it. Uploaded once — the frontend is platform
      # independent, so both matrix legs produce the same files.
      - name: Upload frontend bundle
        if: runner.os == 'Linux'
        uses: actions/upload-artifact@v4
        with:
          name: nukumizu-frontend
          path: frontend/dist
          if-no-files-found: error