#!/bin/bash

# rt - A repository tool abstracting away from any specific VCS.
#
# Currently supported: git, hg.

if [ $# -lt 1 ]; then
	echo "Usage: $0 <cmd> <repo> [<args>]"
	echo "  executes <cmd> for <repo> (passing <args> through)"
	exit 1
fi

rt_CMDS="clone\nlog\ndiff\nmerge"
rt_CMD="$1"

if [ "$rt_REPO" == "" ]; then
	rt_REPO="."
fi

# sort of shortcuts for commands (beginnings)
cmd=`echo -e $rt_CMDS | grep -E "^$1"`
if [ "$?" == "0" ]; then
	rt_CMD=$cmd
fi

prog_from_any() {
	if [ -d "$1/.git" ]; then
		rt_PROG="git"
	elif [ -d "$1/.hg" ]; then
		rt_PROG="hg"
	elif [ `echo $1 | grep -E "(git|hub|gh|bb|repo.or.cz)"` ]; then
		rt_PROG="git"
	elif [ `echo $1 | grep -E "(hg|bitbucket)"` ]; then
		rt_PROG="hg"
	else
		rt_PROG=""
	fi
}

rt_clone() {
	$rt_PROG $rt_CMD $rt_REPO $@
}

rt_any() {
	cd $rt_REPO
	$rt_PROG $rt_CMD $@
	cd - &> /dev/null
}

if [ "$rt_CMD" == "clone" ]; then
	rt_REPO="$2"
	rt_FUN="rt_clone"
	shift 2
else
	shift 1
	rt_FUN="rt_any"
fi

# get the repo type
prog_from_any $rt_REPO

# have fun!
$rt_FUN $@