#!/usr/bin/env bash

set -e

PROJECT_NAME=packer
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
DIST_DIR="$DIR/../dist"

rm -rf "$DIST_DIR"
mkdir -p "$DIST_DIR"

function build {
  local version=$(get_version)
  local dir_name="$PROJECT_NAME-${2}-${version}-${GOOS}-${GOARCH}${GOARM}"
  local dest_dir="$DIST_DIR/$dir_name"
  echo "Building $PROJECT_NAME for ${GOOS}-${GOARCH}${GOARM}..."
  mkdir "$dest_dir"
  go build -ldflags="-s -X 'main.projectVersion=${version}' -extldflags '-static'" \
    -o "$dest_dir/${PROJECT_NAME}-${2}${FILE_EXT}" \
    "${1}"
  wait
  cp "$DIR/../README.md" "$dest_dir/"
  echo "Creating $PROJECT_NAME archive for ${GOOS}-${GOARCH}${GOARM}..."
  ( cd "$DIST_DIR" && tar -czf "$dir_name.tar.gz" "$dir_name" )
  wait
}

function get_version {
  local tags=($(git tag -l --points-at HEAD))
  if [ ! -z "$tags" ]; then
    echo ${tags[0]}
    return
  fi
  latest_tag=$( ( git describe --abbrev=0 --tags 2>/dev/null || exit ) )
  local latest_branch_commit=$(git log --pretty=format:'%h' -n 1)
  echo "${latest_tag:-0.0.0}-dev+rev.$latest_branch_commit"
}

dep ensure -v

export CGO_ENABLED=0
export GO_EXTLINK_ENABLED=0

if [ -z "${GOOS}" ] && [ -z "${GOARCH}" ]; then
  FILE_EXT= GOOS=linux GOARCH=amd64 build ./cmd/post-processor/image-template post-processor-opennebula-image-template
  FILE_EXT= GOOS=linux GOARCH=386 build ./cmd/post-processor/image-template post-processor-opennebula-image-template
  FILE_EXT= GOOS=linux GOARCH=arm GOARM=7 build ./cmd/post-processor/image-template post-processor-opennebula-image-template
else
  build ./cmd/server ./cmd/post-processor/image-template post-processor-opennebula-image-template
fi