name: Build

# Scaffolding CI: proves the CMake toolchain configures and builds on all
# three platforms the design doc names. It does not yet link livekit-ffi
# or produce a real OBS-installable package -- see README.md.

on:
  push:
  pull_request:

jobs:
  linux:
    name: Linux (ubuntu-latest)
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install build dependencies
        run: |
          sudo apt-get update -qq
          sudo apt-get install -y -qq cmake ninja-build libobs-dev

      - name: Configure
        run: cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release

      - name: Build
        run: cmake --build build

      - name: Test (core library)
        run: ctest --test-dir build --output-on-failure

  macos:
    name: macOS (macos-latest)
    runs-on: macos-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install build dependencies
        run: brew install cmake ninja

      - name: Configure
        # libobs is not expected to be found here yet (no Homebrew
        # formula / SDK download wired up in this pass) -- the top-level
        # CMakeLists.txt falls back to building only the core library in
        # that case. See README.md.
        run: cmake -S . -B build -G Ninja -DCMAKE_BUILD_TYPE=Release

      - name: Build
        run: cmake --build build

      - name: Test (core library)
        run: ctest --test-dir build --output-on-failure

  windows:
    name: Windows (windows-latest)
    runs-on: windows-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install build dependencies
        # winvm-builder is a self-hosted act_runner labeled
        # "windows-latest" -- it is NOT the GitHub-hosted windows-latest
        # image, so none of the tools that image preinstalls (cmake
        # included) can be assumed present. Confirmed by a first CI run
        # on this repo: "cmake : The term 'cmake' is not recognized...".
        # lukka/get-cmake downloads a pinned cmake+ninja binary and adds
        # it to PATH for this job, with no admin/choco dependency.
        uses: lukka/get-cmake@latest

      - name: Configure
        # Same story as macOS: no OBS SDK available yet on this runner,
        # so this proves the core library + MSVC toolchain only.
        run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release

      - name: Build
        run: cmake --build build --config Release

      - name: Test (core library)
        run: ctest --test-dir build -C Release --output-on-failure