build.sh

#! /bin/bash
# Copyright 2020 Kuei-chun Chen. All rights reserved.
die() { echo "$*" 1>&2 ; exit 1; }
VERSION="v$(cat version)-$(git log -1 --date=format:"%Y%m%d" --format="%ad")"
REPO=$(basename "$(dirname "$(pwd)")")/$(basename "$(pwd)")
LDFLAGS="-X main.version=$VERSION -X main.repo=$REPO"
TAG="simagix/keyhole"
[[ "$(which go)" = "" ]] && die "go command not found"

if [[ "$1" == "help" ]]; then
  echo "usage: build.sh [docker|cross-platform]"
  exit
fi

gover=$(go version | cut -d' ' -f3)
if [ "$gover" \< "go1.18" ]; then
    [[ "$GOPATH" = "" ]] && die "GOPATH not set"
    [[ "${GOPATH}/src/github.com/$REPO" != "$(pwd)" ]] && die "building keyhole should be under ${GOPATH}/src/github.com/$REPO"
fi

if [ ! -f go.sum ]; then
    go mod tidy
fi

mkdir -p dist
if [[ "$1" == "docker" ]]; then
  docker rmi -f $(docker images -f "dangling=true" -q) > /dev/null 2>&1
  BR=$(git branch --show-current)
  if [[ "${BR}" == "master" ]]; then
    BR="latest"
  fi 
  docker build  -f Dockerfile -t ${TAG}:${BR} .
  id=$(docker create ${TAG}:${BR})
  docker cp $id:/dist - | tar vx
  docker run ${TAG}:${BR} /keyhole -version
else
  if [ "$1" == "cross-platform"  ]; then
    env CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -ldflags "$LDFLAGS" -o dist/keyhole-osx-x64 main/keyhole.go
    env CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags "$LDFLAGS" -o dist/keyhole-linux-x64 main/keyhole.go
    env CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags "$LDFLAGS" -o dist/keyhole-win-x64.exe main/keyhole.go
  else
    rm -f keyhole
    go build -ldflags "$LDFLAGS" -o dist/keyhole main/keyhole.go
    if [[ -f dist/keyhole ]]; then
      ./dist/keyhole -version
    fi
  fi
fi