#!/bin/bash

case "$(uname -s)" in
	Linux*)		platform=linux;;
	Darwin*)	platform=unsupported;;
	CYGWIN*)	platform=unsupported;;
	MINGW*)		platform=mingw;;
	*)			platform=unsupported
esac

if [ "$platform" == "unsupported" ]; then
	echo "Error: Unsupported platform $(uname -s)"
	exit
fi

# check for dependencies
if [ ! "$(which pacman)" == "" ]; then
	pacman -S --needed --noconfirm msys/autoconf msys/automake-wrapper msys/libtool msys/pkg-config msys/git
fi

git=`which git`
if [ "$git" == "" ]; then
	echo "Error: Git not found in PATH"
	exit -1
fi

go=`which go`
if [ "$go" == "" ]; then
	echo "Error: Go not found in PATH"
	exit -1
fi

# clean
rm -rf bin

# create folders
if [ ! -e .deps ]; then
	mkdir .deps
fi

# get and build libzmq
cd .deps
if [ ! -e libzmq ]; then
	git clone https://github.com/zeromq/libzmq
fi
cd libzmq
git checkout v4.2.3
if [ ! -e Makefile ]; then
	./autogen.sh && ./configure --enable-static
fi
if [ "$platform" == "mingw" ]; then
	sed -i 's/MAKE=make/MAKE=mingw32-make/' Makefile
	mingw32-make
else
	make
fi
cd ../..

# get and build go zmq4
GOPATH=`pwd`/.deps go get
# use built libzmq
if [ "$platform" == "linux" ]; then
	ESC_PWD=`pwd | sed 's/\//\\\\\//g'`
	cflags="\#cgo \!windows CFLAGS\: \-I${ESC_PWD}\/\.deps\/libzmq\/include"
	ldflags="\#cgo \!windows LDFLAGS\: ${ESC_PWD}\/\.deps\/libzmq\/src\/\.libs\/libzmq\.a \-lstdc\+\+ \-lm"
	sed -i "4s/.*/${cflags}/" .deps/src/github.com/pebbe/zmq4/zmq4.go
	sed -i "5s/.*/${ldflags}/" .deps/src/github.com/pebbe/zmq4/zmq4.go
fi
if [ "$platform" == "mingw" ]; then
	ESC_PWD=`pwd | sed 's/\/\(.\)/\1:/' | sed 's/\//\\\\\//g'`
	cflags="\#cgo windows CFLAGS\: \-I${ESC_PWD}\/\.deps\/libzmq\/include \-DZMQ_STATIC"
	ldflags="\#cgo windows LDFLAGS\: ${ESC_PWD}\/\.deps\/libzmq\/src\/\.libs\/libzmq\.a -lstdc++ -lwsock32 -lws2_32 -lIphlpapi"
	sed -i "5s/.*/${cflags}/" .deps/src/github.com/pebbe/zmq4/zmq4.go
	sed -i "6s/.*/${ldflags}/" .deps/src/github.com/pebbe/zmq4/zmq4.go
fi

# build goes
OUTPUT=bin/goes
if [ "$platform" == "mingw" ]; then
	OUTPUT=bin/goes.exe
fi
GOPATH=`pwd`/.deps go build -a -ldflags '-s' -o ${OUTPUT} goes.go

# copy libstdc++ deps mingw
if [ "$platform" == "mingw" ]; then
	cp /mingw64/bin/libstd*.dll bin
	cp /mingw64/bin/libgcc*.dll bin
	cp /mingw64/bin/libwin*.dll bin
fi

# copy licenses
cp .deps/libzmq/COPYING bin/libzmq.COPYING
cp .deps/libzmq/COPYING.LESSER bin/libzmq.COPYING.LESSER
cp LICENSE bin/LICENSE

tar -czvf goes.tar.gz bin/