#! /bin/sh -e

fail () {
    echo "$@" 1>&2
    exit 1
}

case "$ACTION:$CAT:$POINTS" in
inventory::)
    echo "pategory 1 2 3 4 5 10 20 300"
    echo "nealegory 1 3 2"
    ;;
open:*:*)
    case "$CAT:$POINTS:$FILENAME" in
    *:*:moo.txt)
        echo "Moo."
        ;;
    *)
        fail "Cannot open: $FILENAME"
        ;;
    esac
    ;;
answer:pategory:1)
    if [ "$ANSWER" = "answer" ]; then
        echo "correct"
    else
        echo "Sorry, wrong answer."
    fi
    ;;
answer:pategory:2)
    fail "Internal error"
    ;;
*)
    fail "ERROR: Unknown action: $action"
    ;;
esac