#!/bin/sh
# build.sh
# This script for build go projects.
# @version    170227:1
# @author     zhangxuhong <zhangxuhong@xitu.io>
#

# [config]
echo "-[config]-"

# ----------------------------[manual config here]------------------------------

# REPO_SRC=/data/repo/collection_set_api
# BUILD_TARGET=collection_set_api

# ------------------------------------------------------------------------------

echo -e "\033[34mREPO_SRC set to: ${REPO_SRC}\033[0m"
echo -e "\033[34mBUILD_TARGET set to: ${BUILD_TARGET}\033[0m"

echo ""
sleep 1

# [set env]
echo "-[set env]-"

# $GOBIN
export GOBIN="${REPO_SRC}/bin"
echo -e "\033[34mGOBIN set to: ${GOBIN}\033[0m"

# $GOPATH
export GOPATH="${REPO_SRC}"
echo -e "\033[34mGOPATH set to: ${GOPATH}\033[0m"

echo ""
sleep 1

# [check old build target]
echo "-[check old build target]-"
if [ ! -d $GOBIN ]; then mkdir $GOBIN; fi
if [ -f "${GOBIN}/${BUILD_TARGET}" ]; then 
    echo -e "\033[43m[WARRING!] build target alerady exists, will remove it. \033[0m";
    echo "old build_target detail:"
    ls -alh "${GOBIN}/${BUILD_TARGET}";
    oldShaSum=`shasum "${GOBIN}/${BUILD_TARGET}" | awk -F' ' '{print $1}'`;
    echo "target sha: ${oldShaSum}";
    rm -rf "${GOBIN}/${BUILD_TARGET}";
    echo "old build target removed.";
fi

echo "done."
echo ""
sleep 1

# [build]
echo "-[build]-"
echo "build start: "
echo "go build -o ${GOBIN}/${BUILD_TARGET}"
cd "${GOPATH}/src"
go build -o "${GOBIN}/${BUILD_TARGET}"

ls -alh "${GOBIN}/${BUILD_TARGET}"
newShaSum=`shasum "${GOBIN}/${BUILD_TARGET}" | awk -F' ' '{print $1}'`;
echo "target sha: ${newShaSum}";
if [ "$oldShaSum" == "$newShaSum" ];then
    echo -e "\033[43m[WARRING!] old build target shasum is equals to new build target. \033[0m"
fi

echo "done."