#!/bin/bash
if [ "$1" == "-h" ] || [ "$1" == "--help" ]; then
    (echo "Back up files with the specified extension to the specified path to the specified folder: "
    echo -e "\t./backup source_files files_extension source_archive"
    echo -e "\tOnce buck up files"
    echo "Keys:"
    echo -e "\t-t or --time:\tSets period of backup in format:\n\tminute hour day month day_of_week\n"
    echo -e "\t-c or --count:\tSets count of backup\n\tIf count of backup bigger than the specified number\n\tdeletes the old backups (count - 1) and creates another backup\n"
    echo "Examples:"
    echo -e "\t./backup -t 0 * * * * source_files files_extension source_archive\n\tBackups files at the begginning of every hour\n"
    echo -e "\t./backup -c 5 source_files files_extension source_archive\n\tSaves no more than the 5 archives in source_archive\n"
    echo -e "\t./backup -tc * * * * * 5 source_files files_extension source_archive\n\tBackups files every minutes and saves no more\n\tthan 5 the archives in source_files")
    exit 0
elif [ "$1" == "-t" ] || [ "$1" == "--time" ]; then
    touch config.txt
    echo $7 > config.txt
    echo $8 >> config.txt
    echo $9 >> config.txt
    crontab -r
    exit 0
fi
readarray -a settings < config.txt
cd ${settings[2]}
tar -cf archive.tar ${settings[0]}/*.${settings[1]}
exit 0