#!/bin/sh
# gfy GOARGS... - go(1) fuck yourself
# gfy clone PKGNAME

# This allows building go projects which have everything vendored
# (or are fetched using "gfy clone") without setting up a GOPATH, just
# run "gfy build" (or "gfy build ./relative/pkg").
#
# Only use this tool on the toplevel of a project.

if [ "$1" = clone ]; then
	shift
	dir=${1##*/}

	export GOPATH=$PWD/$(mktemp -d .gfyget.XXXXXXXXX)
	mkdir -p $GOPATH/pkg
	go get -v -u "$@"
	r=$?

	mv $GOPATH/src/"$1" $dir
	cd $dir
	echo "$1" > $GOPATH/clonename
	mv $GOPATH .gfy
	ln -sfr . .gfy/src/"$1"

	exit $r
fi

mkdir -p .gfy
export GOPATH=$PWD/.gfy
mkdir -p $GOPATH/src
mkdir -p $GOPATH/bin
mkdir -p $GOPATH/pkg
pkg=$(cat .gfy/clonename 2>/dev/null ||
	{ git remote -v 2>/dev/null | awk '/fetch/{ sub(".*://","",$2); sub("com:","com/"); sub("\\.git",""); print $2; quit}' ||
	echo . ;})
if [ ! -e $GOPATH/src/$pkg ]; then
	mkdir -p $GOPATH/src/$pkg
	rmdir $GOPATH/src/$pkg 2>/dev/null
	ln -sfr . $GOPATH/src/$pkg
fi
[ -e bin ] || ln -sfr $GOPATH/bin bin

cd $GOPATH/src/$pkg
exec go "$@"