#!/bin/bash

CONTEXT="$1"; shift
ARGS=($@)

if [ "$CONTEXT" = "-c" ]; then
	ARGS_ALL=($@)
	CONTEXT="${ARGS_ALL[0]}"
	ARGS=(${ARGS_ALL[@]:1})
fi

RUBYVERSION="${ARGS[0]}"
CMD="${ARGS[1]}"
ARGS=(${ARGS[@]:2})

if [ "$CONTEXT" = "" ]; then
	echo "    Error: /opt context is not set" >&2
	exit 2
fi

if [ "$RUBYVERSION" = "" ]; then
	echo "    Error: Ruby version is not set" >&2
	exit 2
fi

run() {
	exec sudo context-chruby-run "$CONTEXT"  "$RUBYVERSION" gem $@
}

forbidden() {
	echo '    This command is forbidden' >&2
	exit 1
}

help() {
	gem help $@ | sed -e 's/ gem/ srv0-gem/g'
	exit 0
}

cmd_proc() {
	case "$CMD" in
		install)
			run install $@
			;;
		list)
			run list $@
			;;
		env)
			run env $@
			;;
		build)
			forbidden $@
			;;
		server)
			forbidden $@
			;;
		help)
			help $@
			;;
		"")
			help $@
			;;
		*)
			#exec gem help
			echo "    Unknown or forbidden command $CMD" >&2
			exit 1
			;;
	esac
}

cmd_proc $ARGS