#!/bin/bash

set -eo pipefail

export GO111MODULE=on

OS_TARGETS=(windows linux)
ARCH_TARGETS=(amd64)

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"

function build {

  local name=$1
  local srcdir=$2
  local os=$3
  local arch=$4

  local dirname="$name-$os-$arch"
  local destdir="$DIR/../release/$dirname"

  local ext=
  [ "$os" == "windows" ] && ext=.exe

  rm -rf "$destdir"
  mkdir -p "$destdir"

  echo "building $dirname..."

  CGO_ENABLED=0 GOOS="$os" GOARCH="$arch" go build \
    -v \
    -mod=vendor \
    -ldflags="-s -w" \
    -gcflags=-trimpath="${PWD}" \
    -asmflags=-trimpath="${PWD}" \
    -o "$destdir/$name$ext" \
    "$srcdir"

  if [ ! -z "$(which upx)" ]; then
    upx --best "$destdir/$name$ext"
  fi

}

function copy {

  local name=$1
  local os=$2
  local arch=$3
  local src=$4
  local dest=$5

  local dirname="$name-$os-$arch"
  local destdir="$DIR/../release/$dirname"

  echo "copying '$src' to '$destdir/$dest'..."

  mkdir -p "$(dirname $destdir/$dest)"

  cp -rfL $src "$destdir/$dest"

}

function compress {

  local name=$1
  local os=$2
  local arch=$3

  local dirname="$name-$os-$arch"
  local destdir="$DIR/../release/$dirname"

  echo "compressing $dirname..."
  tar -czf "$destdir.tar.gz" -C "$destdir/../" "$dirname"
}

function release_updater {

  local os=$1
  local arch=$2
  
  build 'updater' "$DIR/../cmd/updater" $os $arch
  compress 'updater' $os $arch

}

function release_discovery {

  local os=$1
  local arch=$2

  build 'discovery' "$DIR/../cmd/discovery" $os $arch
  compress 'discovery' $os $arch

}

function release_configurator {

  local os=$1
  local arch=$2

  build 'configurator' "$DIR/../cmd/configurator" $os $arch
  compress 'configurator' $os $arch

}


function main {
  for os in ${OS_TARGETS[@]}; do
    for arch in ${ARCH_TARGETS[@]}; do
      release_configurator $os $arch
      release_updater $os $arch
      release_discovery $os $arch
    done
  done
}

main