#!/bin/bash

# get build data
if [[ "$BUILD_COMMIT" == "" ]]; then
  BUILD_COMMIT=$(git describe --all --long --abbrev=99 --dirty 2>/dev/null)
fi
if [[ "$BUILD_USER" == "" ]]; then
  BUILD_USER=$(id -un)
fi
if [[ "$BUILD_HOST" == "" ]]; then
  BUILD_HOST=$(hostname -f)
fi
if [[ "$BUILD_DATE" == "" ]]; then
  BUILD_DATE=$(date +%d.%m.%Y)
fi
if [[ "$BUILD_SOURCE" == "" ]]; then
  BUILD_SOURCE=$(git remote -v | grep origin | cut -f2 | cut -d" " -f1 | head -n 1)
fi
if [[ "$BUILD_SOURCE" == "" ]]; then
  BUILD_SOURCE=$(git remote -v | cut -f2 | cut -d" " -f1 | head -n 1)
fi
BUILD_BUILDOPTIONS=$(echo $* | sed "s/ /§/g")

# check
if [[ "$BUILD_COMMIT" == "" ]]; then
  echo "could not automatically determine BUILD_COMMIT, please supply manually as environment variable."
  exit 1
fi
if [[ "$BUILD_USER" == "" ]]; then
  echo "could not automatically determine BUILD_USER, please supply manually as environment variable."
  exit 1
fi
if [[ "$BUILD_HOST" == "" ]]; then
  echo "could not automatically determine BUILD_HOST, please supply manually as environment variable."
  exit 1
fi
if [[ "$BUILD_DATE" == "" ]]; then
  echo "could not automatically determine BUILD_DATE, please supply manually as environment variable."
  exit 1
fi
if [[ "$BUILD_SOURCE" == "" ]]; then
  echo "could not automatically determine BUILD_SOURCE, please supply manually as environment variable."
  exit 1
fi

# set build options
export CGO_ENABLED=0
if [[ $1 == "dev" ]]; then
  shift
  export CGO_ENABLED=1
  DEV="-race"
fi

# Set GOOS and GOARCH for Darwin to use Linux architecture
if [[ "$(uname)" == "Darwin" ]]; then
  export GOOS=linux
  export GOARCH=amd64
fi

echo "Please notice, that this build script includes metadata into the build."
echo "This information is useful for debugging and license compliance."
echo "Run the compiled binary with the -version flag to see the information included."

# build
BUILD_PATH="github.com/safing/portmaster/base/info"
go build $DEV -ldflags "-X ${BUILD_PATH}.commit=${BUILD_COMMIT} -X ${BUILD_PATH}.buildOptions=${BUILD_BUILDOPTIONS} -X ${BUILD_PATH}.buildUser=${BUILD_USER} -X ${BUILD_PATH}.buildHost=${BUILD_HOST} -X ${BUILD_PATH}.buildDate=${BUILD_DATE} -X ${BUILD_PATH}.buildSource=${BUILD_SOURCE}" $*