#! /bin/bash

## file: app/appointment-messenger/node_modules/lodash/fp/pullAllBy.js                                                        
#USER   jessica   rw-                                          
#GROUP  jessica   rw-                                          
#other            r--   

FILE_REGEX="^#[[:space:]]+file:[[:space:]]+(.*)$"
PERMS_REGEX="USER[[:space:]]+([[:alnum:]]+)[[:space:]]+(([r\-])([w\-])([x\-]))([[:space:]]+(([r\-])([w\-])([x\-])))?"
FILE_UNUSED=0

getfacl -p -R -t "$1" | while read LINE ; do
    if [[ "$LINE" =~ $FILE_REGEX ]] ; then
        FILENAME="${BASH_REMATCH[1]}"

        FILE_UNUSED=1
    fi

    if [[ "$LINE" =~ $PERMS_REGEX ]] ; then
        PERMS="$LINE"
        PERMS_READ="${BASH_REMATCH[3]}"
        PERMS_WRITE="${BASH_REMATCH[4]}"
        PERMS_EXEC="${BASH_REMATCH[5]}"

        ACTUAL="${BASH_REMATCH[2]}"
        DEFAULTS="${BASH_REMATCH[7]}"

        ACTUAL_OTHER="${ACTUAL//[w]/-}"

        if ((FILE_UNUSED)) ; then
            setfacl -m "group::$ACTUAL" "$FILENAME"
            setfacl -m "other::$ACTUAL_OTHER" "$FILENAME"

            if [[ ! -z "$DEFAULTS" ]] ; then
                DEFAULTS_OTHER="${DEFAULTS//[w]/-}"
                setfacl -d -m "group::$DEFAULTS" "$FILENAME"
                setfacl -d -m "other::$DEFAULTS_OTHER" "$FILENAME"
            fi
        fi
    fi

done