rebuild-osn.sh

#!/bin/bash

# Usage: rebuild-osn [--clean --arch=ARCH]
# Arguments-
# clean: pass in this argument to delete the cached build for a full rebuild which can take quite awhile. If you do not, then the build will compile really fast if you built it before.
# arch - sets CMAKE_OSX_ARCHITECTURES, arm64 or x86_64
# Warning: OSN cmake process will re-download LibOBS so if you built slobs locally you'll need to reinstall your changes into OSN again.
function display_usage {
  echo "Usage: $(basename "$0") [OPTIONS]"
  echo ""
  echo "Description: This script builds obs-studio-node."
  echo ""
  echo "Options:"
  echo "  -h, --help        Display this help message and exit."
  echo "  --clean, -c       pass in this argument to delete the cached build for a full rebuild which can take quite awhile. If you do not, then the build will compile really fast if you built it before."
  echo "  --arch            sets CMAKE_OSX_ARCHITECTURES, arm64 or x86_64 [mac-osx only]. By default, cmake will use the host arch."
  echo "  --install         sets the CMAKE_INSTALL_PREFIX (so should be the FULL non-relative path). By default, attempts to write to ../desktop/node_modules/obs-studio-node/OSN.app to create an app bundle that enables browser sources to work."
  echo "  --build, -b       pass in this argument to run the cmake --build command after configuring with cmake"
  echo ""
  echo "Example:"
  echo "  $(basename "$0") --clean --arch=x86_64"
  echo ""
  echo "Exit Status:"
  echo "  0 on successful execution."
  echo "  1 if obs-studio-node folder cannot be found or build failure."
  exit 0
}

if [[ ( "$1" == "--help" ) || ( "$1" == "-h" ) ]]; then
  display_usage
  exit 0
fi

if [ ! -d "../obs-studio-node" ]; then
  echo "Error: 'obs-studio-node' directory is not found."
  exit 1
fi

cd ..
origin_dir=$(pwd) # Save the starting directory
app_dir="$origin_dir"/desktop/node_modules/obs-studio-node/OSN.app

cd obs-studio-node || { echo "Error: Failed to navigate to obs-studio-node."; exit 1; }
can_build=false
build_macos() {
  cmake_args=()
  for arg in "$@"
  do
    # Check if the argument starts with --arch=
    if [[ $arg == --arch=* ]]; then
      # Extract the value using parameter expansion
      arch_value="${arg#*=}"
      cmake_args+=(-DCMAKE_OSX_ARCHITECTURES=${arch_value})
    elif [[ $arg == --install=* ]]; then
      # Extract the value using parameter expansion
      app_dir="${arg#*=}"
    elif [[ ("$arg" == "--build") || ("$arg" == "-b") ]]; then
      can_build=true
    elif [[ "$arg" == "--clean" || "$arg" == "-c" ]]; then
      echo "$0 Deleting cached build. Grab a coffee!"
      rm -rf build
      rm -rf "$app_dir"
      exit_status=$?
      if [ "$exit_status" -ne 0 ]; then
        echo "$0 failed to remove cached build"
        exit 1
      fi
    fi
  done
  echo "$0 create $app_dir"
  mkdir -p "$app_dir"/distribute/obs-studio-node
  mkdir build
  cd build
  yarn install
  # Note: This will download a new libobs_src folder (which contains the packed OBS.app built by SLOBS on github)
  cmake .. -DCMAKE_OSX_DEPLOYMENT_TARGET=10.15 -DCMAKE_INSTALL_PREFIX=$app_dir/distribute/obs-studio-node -DSTREAMLABS_BUILD=OFF -DNODEJS_NAME=iojs -DNODEJS_URL=https://artifacts.electronjs.org/headers/dist -DNODEJS_VERSION=v29.4.3 -DLIBOBS_BUILD_TYPE=release -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_OSX_ARCHITECTURES=arm64 "${cmake_args[@]}" -G Xcode

  exit_status=$?

  if [ "$exit_status" -eq 0 ]; then
    if [[ "$can_build" == true ]]; then
      cmake --build . --target install --config RelWithDebInfo
    fi
  else
    RED='\e[31m'
    NC='\e[0m'
    echo -e "${RED}failed building obs-studio-node with exit code $exit_status.${NC}"
    exit 1
  fi
}

build_windows() {
  echo "Script $0 is running on Windows.."
  if [[ "$1" == "--clean" || "$1" == "-c" ]]; then
    echo "Deleting cached build. Grab a coffee!"
    rm -rf build
  fi

  mkdir -p build
  yarn install
  cd build
  cmake -G "Visual Studio 17 2022" -A x64 -DCMAKE_PREFIX_PATH="$origin_dir/obs-studio-node/build/libobs-src/" ../ -DCMAKE_INSTALL_PREFIX="$origin_dir/desktop/node_modules/obs-studio-node/"
  

  exit_status=$?

  if [ "$exit_status" -eq 0 ]; then
    if [[ "$can_build" == true ]]; then
      cmake --build . --target install --config RelWithDebInfo
    fi
  else
    RED='\e[31m'
    NC='\e[0m'
    echo -e "${RED}failed building obs-studio-node with exit code $exit_status. Make sure electron.exe (Streamlabs Desktop) is not running (it can lock files).${NC}"
    exit 1
  fi
}

# Determine the operating system
ostype=$(uname)

code=0

if [ "$ostype" == "Darwin" ]; then
  echo "Script is installing obs-studio-node within $app_dir. Project will be built into build folder."
  build_macos "$@"
elif [[ "$ostype" == MINGW* || "$ostype" == CYGWIN* ]]; then
  build_windows "$@"
else
  echo "Unsupported operating system: $ostype"
  exit 1
fi