#!/bin/sh

set -e

verbose()
{
	echo "+ $@"
	"$@"
}

repos_urls="
	.
	data/xonotic-data.pk3dir
	data/xonotic-maps.pk3dir
	data/xonotic-music.pk3dir
	data/xonotic-nexcompat.pk3dir
	darkplaces
	fteqcc@git://github.com/Blub/qclib.git
"

repos=`for X in $repos_urls; do echo "${X%%@*}"; done`

if [ "$#" = 0 ]; then
	set -- help
fi
cmd=$1
shift

d0=`pwd`
case "$cmd" in
	update|pull)
		base=`git config remote.origin.url`
		base=${base%xonotic.git}
		for dcomplete in $repos_urls; do
			case "$dcomplete" in
				*@*)
					d=${dcomplete%%@*}
					url=${dcomplete#*@}
					switch=false
					;;
				*)
					d=${dcomplete%%@*}
					url=$base${d##*/}.git
					switch=true
					;;
			esac
			if [ -d "$d0/$d" ]; then
				verbose cd "$d0/$d"
				case "$d" in
					.)
						;;
					*)
						if $switch; then
							verbose git config remote.origin.url "$url"
						fi
						;;
				esac
				verbose git pull
				verbose git remote prune origin
				cd "$d0"
			else
				verbose git clone "$url" "$d0/$d"
			fi
		done
		;;
	checkout|switch)
		remote=$1
		branch=$2
		if [ -z "$branch" ]; then
			branch=$remote
			remote=origin
		fi
		exists=false
		for d in $repos; do
			verbose cd "$d0/$d"
			if git rev-parse "refs/heads/$branch" >/dev/null 2>&1; then
				exists=true
				verbose git checkout "$branch"
			elif git rev-parse "refs/remotes/$remote/$branch" >/dev/null 2>&1; then
				exists=true
				verbose git checkout --track -b "$branch" "$remote/$branch"
			else
				verbose git checkout master
			fi
			cd "$d0"
		done
		if ! $exists; then
			echo "The requested branch was not found in any repository."
		fi
		"$0" branch
		;;
	branch)
		remote=$1
		branch=$2
		if [ -z "$branch" ]; then
			branch=$remote
			remote=origin
		fi
		if [ -z "$branch" ]; then
			for d in $repos; do
				cd "$d0/$d"
				r=`git symbolic-ref HEAD`
				r=${r#refs/heads/}
				echo "$d is at $r"
				cd "$d0"
			done
		else
			for d in $repos; do
				cd "$d0/$d"
				a=
				while [ x"$a" != x"y" -a x"$a" != x"n" ]; do
					echo "Branch in $d?"
					read -r a
				done
				if [ x"$a" = x"y" ]; then
					verbose git push "$remote" HEAD:"$branch"
					verbose git checkout --track -b "$branch" "$remote/$branch"
				fi
				cd "$d0"
			done
			"$0" branch
		fi
		;;
	branches)
		for d in $repos; do
			cd "$d0/$d"
			echo "In $d:"
			git branch -a | sed 's/^/  /; /->/d'
			cd "$d0"
		done
		;;
	push)
		for d in $repos; do
			cd "$d0/$d"
			r=`git symbolic-ref HEAD`
			r=${r#refs/heads/}
			a=
			if git log "origin/$r".."$r" | grep .; then
				while [ x"$a" != x"y" -a x"$a" != x"n" ]; do
					echo "Push $r in $d?"
					read -r a
				done
				if [ x"$a" = x"y" ]; then
					verbose git push `git config "branch.$r.remote" || echo origin` HEAD
				fi
			fi
			cd "$d0"
		done
		;;
	compile)
		if [ -z "$MAKEFLAGS" ]; then
			if [ -f /proc/cpuinfo ]; then
				ncpus=$((`grep -c '^processor	:' /proc/cpuinfo`+0))
				if [ $ncpus -gt 1 ]; then
					MAKEFLAGS=-j$ncpus
				fi
			fi
		fi
		verbose cd "$d0/fteqcc"
		verbose make $MAKEFLAGS
		verbose cd "$d0/data/xonotic-data.pk3dir"
		verbose make FTEQCC="$d0/fteqcc/fteqcc.bin" $MAKEFLAGS
		verbose cd "$d0/darkplaces"
		verbose make $MAKEFLAGS sv-debug
		verbose make $MAKEFLAGS cl-debug
		verbose make $MAKEFLAGS sdl-debug
		;;
	run)
		client=-sdl
		case "$1" in
			sdl|glx|agl|dedicated)
				client=-$1
				shift
				;;
			wgl)
				client=
				shift
				;;
		esac
		if ! [ -x "darkplaces/darkplaces$client" ]; then
			if [ -x "darkplaces/darkplaces$client.exe" ]; then
				client=$client.exe
			else
				echo "Client darkplaces/darkplaces$client not found, aborting"
				exit 1
			fi
		fi
		verbose "darkplaces/darkplaces$client" -xonotic $@
		;;
	each|foreach)
		for d in $repos; do
			verbose cd "$d0/$d"
			verbose "$@"
			cd "$d0"
		done
		;;
	*)
		echo "Usage:"
		echo "  $0 pull"
		echo "  $0 push"
		echo "  $0 branches"
		echo "  $0 branch <remote> <branchname>"
		echo "  $0 checkout"
		echo "  $0 compile"
		echo "  $0 run <client> <options>"
		echo "  $0 each <command>"
		;;
esac