#!/bin/bash

source scripts/Import/Functions.sh

CHECKS=true
CHECKFLAG=${1}

header_end='<!-- language file start -->'

langfiles=$(find . -name "*.lang")

script=$(cat <<EOF
\$c = explode("\\n", file_get_contents("php://stdin"));
\$h = [];
while(\$l = array_shift(\$c)) {
    \$h[] = \$l;
    if (\$l === "${header_end}") {
        break;
    }
}
\$c = array_filter(\$c, function(\$v) { return !empty(\$v); } );
array_multisort(\$c);
file_put_contents("php://stdout",join("\n",array_merge(\$h, \$c)));
EOF
)

for file in $langfiles
do
    header_length=1
    while [ true ]
    do
        header_length=$(($header_length + 1))
        line=$(head -n ${header_length} $file | tail -n1)

        if [ "$line" = "$header_end" ]; then
            break
        fi

        if [ $header_length -gt 64 ]; then
            echo "no proper header-marker found in ${file}; maybe check on line endings?"
            break
        fi
    done

    (cat ${file} | php -r "${script}") > ${file}.tmp
    LANGFILEDIFF=$(diff ${file} ${file}.tmp)
    if [ ! -z "${LANGFILEDIFF}" ]
    then
        if [ ! -z ${CHECKFLAG} ]
        then
            CHECKS=false
            echo "language file ${file} needs to be sorted."
        else
            cp ${file}.tmp ${file}
            echo "modified ${file}"
        fi
    fi
    rm ${file}.tmp
done

if [ $CHECKS = false ]
then
    exit 127
else
    exit 0
fi