next-level-wrapper

#!/bin/bash

LEVELS_DIR="/home/oh/contest-18/"
LEVEL_CODE="$1"

LEVELS[0]='OH18_NEXT'
LEVELS[1]='OH18_O0PS1'
LEVELS[2]='OH18_RH612'

check_level()
{
	LEVEL="$1"
	for ((p = 0; p < 3; ++p)); do
		if [[ "${LEVELS[$p]}" == "$LEVEL" ]]; then
			return $(($p + 1))
		fi
	done

	echo "No valid level code."
	exit 0
}

unlock_level()
{
	LEVEL="$1"
	echo "Level ${LEVEL} unlocked!"
	chmod -R o+rx "${LEVELS_DIR}/${LEVEL}"
}

check_level "$LEVEL_CODE"
P=$?
unlock_level $P