listen/build

#!/bin/sh
# Create all the different builds for listen

# verify we are at root of repository
if ! [ -d .git ]; then
  echo build: this script must be run at the root of the repo
  exit 1
fi

build_go() {
  go build -o out/$(go env GOOS)/listen .
}

build_docker() {
  if [ $DOCKER_IMAGE ]; then
    image=$DOCKER_IMAGE
    if echo $image | grep -q server; then
      os=windows
      exe=C:/build/listen/listen.exe
    else
      os=linux
      exe=/usr/src/listen/listen
    fi
  else
    if [ -f /c/Program\ Files/Docker/Docker/DockerCli.exe ]; then
      os=windows
      exe=C:/build/listen/listen.exe
      image=1-nanoserver
    else
      os=linux
      exe=/usr/src/listen/listen
      image=1-alpine
    fi
  fi

  echo building with $os image golang:$image
  mkdir -p out/docker
  if docker build -t listen-build --build-arg IMAGE=$image -f docker/build.$os.Dockerfile .; then
    docker create --name listen-build-tmp listen-build
    docker cp listen-build-tmp:$exe out/docker
    docker rm listen-build-tmp
  fi
}

mkdir -p out
# if an arg is specified, force building with the specified method
[ $1 ] && build_$1 && exit

# prefer building with local go install if it exists on path
if which go &> /dev/null; then
  build_go
# otherwise, try building with docker
elif which docker &> /dev/null; then
  build_docker
fi