#!/bin/bash

[ "${alias_dir}" = "" ] && alias_dir=$(pwd)
source "${alias_dir}/common"

backup_restore()
{
    in_file=$1
    in_dir=$1
    [ "$in_file" = '' || "$in_dir" = '' ] && printf "Укажите файл для распаковки и директурию, куда распаковывать, например 'backup_restore backup.tgz /home'\n" && return
    printf "Произойдёт распаковка файла '$in_file' в папку '$in_dir'\n"
    ask_continue && return
    sudo tar xvpzf "$in_file" -C "$in_dir"
}
mkalias_with_prefix 'backup_restore'

backup_delete_old_files_by_regex()
{
    backup_dir=$1
    file_regex=$2
    file_max_count=$3
    filter=$4

    file_max_count=$((file_max_count+1)) # tail не так работает
    find "${backup_dir}" -regextype posix-extended -regex ".*${file_regex}" | grep -Ev "${filter}" | sort -r | tail -n +${file_max_count} | xargs -d '\n' rm -f
}
mkalias_with_prefix 'backup_delete_old_files_by_regex'

# | grep -Ev "01d"
#    cur_date=$(date +%Yy_%mm_%dd)
# '.*([^1])-zakonvremeni_backup.tar'
# '.*1-zakonvremeni_backup.tar'

backup_delete_old_files_by_date()
{
    backup_dir=$1
    file_name_template=$2
    [[ "$backup_dir" == '' || "$file_name_template" == '' ]] && printf "Укажите имя папки и шаблон имени, например 'delete_old_backup_files_by_date backup/ host_name_@DATE.zip 3 4 5'. '@DATE' - означает дату в формате 'date +%%Yy_%%mm_%%dd', 3 - максимальное количество файлов сохраняемых ежедневно, 4 - ежемесячно, 5 - ежегодно\n" && return
    file_max_count_every_day=$3
    file_max_count_every_month=$4
    file_max_count_every_year=$5
    by_week=$6

    [[ "$file_max_count_every_day" == '' ]] && file_max_count_every_day=2
    [[ "$file_max_count_every_month" == '' ]] && file_max_count_every_month=2
    [[ "$file_max_count_every_year" == '' ]] && file_max_count_every_year=2

    if [[ "$by_week" == "" ]]; then
        backup_delete_old_files_by_regex "${backup_dir}" "${file_name_template//'@DATE'/'.*'}" "${file_max_count_every_day}" 'm_01d|y_03m_01d'
        backup_delete_old_files_by_regex "${backup_dir}" "${file_name_template//'@DATE'/'.*m_01d.*'}" "${file_max_count_every_month}" 'y_03m_01d'
        backup_delete_old_files_by_regex "${backup_dir}" "${file_name_template//'@DATE'/'.*y_03m_01d.*'}" "${file_max_count_every_year}" '________NOTHONG___________'
    else
        backup_delete_old_files_by_regex "${backup_dir}" "${file_name_template//'@DATE'/'.*'}" "${file_max_count_every_day}" '1v-|11v-'
        backup_delete_old_files_by_regex "${backup_dir}" "${file_name_template//'@DATE'/'.*1v.*'}" "${file_max_count_every_month}" '11v-'
        backup_delete_old_files_by_regex "${backup_dir}" "${file_name_template//'@DATE'/'.*11v-.*'}" "${file_max_count_every_year}" '________NOTHONG___________'
    fi

    # test
    # for (( y = 2001; y < 2010; y++ )) do for (( m = 1; m < 10; m++ )) do for (( d = 1; d < 10; d++ )) do touch "backup_${y}y_0${m}m_0${d}d.zip"; backup_delete_old_files_by_date ./ "backup_@DATE\.zip" 2 2 2; sleep 0.15; done; done; done;
    # for (( y = 2001; y < 2010; y++ )) do for (( v = 10; v < 51; v++ )) do touch "backup_${y}y_01m_01d-${v}v-10H.zip"; backup_delete_old_files_by_date ./ "backup_@DATE\.zip" 2 2 2 week; sleep 0.15; done; done;
}
mkalias_with_prefix 'backup_delete_old_files_by_date'

backup_date()
{
    echo "$(date +%Yy_%mm_%dd-%Vv-%Hh_%Mm_%Ss)"
}
mkalias_with_prefix 'backup_date'

backup_firefox()
{
    backup_dir=$1
    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
    #ask_continue && return
    cd ~
    file="${backup_dir}/$(hostname)_mozilla_backup_$(backup_date).tgz"
    tar cvpzf "${file}" \
        --exclude=.mozilla/firefox/*.*/Cache \
        .mozilla
    #--exclude=.mozilla/firefox/*.*/storage 
    echo "${file}"
}
mkalias_with_prefix 'backup_firefox'

backup_home()
{
    backup_dir=$1
    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
    #ask_continue && return

    cd /home
    file="${backup_dir}/$(hostname)_home_backup_$(backup_date).tgz"
    sudo tar cvpzf "${file}" \
        --exclude=*home_backup*.tgz \
        --exclude=*/Загрузки/* \
        --exclude=*/Backup/* \
        --exclude=*/Музыка/* \
        --exclude=MyProgs \
        --exclude=media \
        --exclude=private \
        --exclude=.thumbnails \
        --exclude=.mozilla/firefox/*.*/Cache \
        --exclude=*/.cache/* \
        --exclude=/.config/chromium/*/CacheStorage \
        --exclude=*/.config/skypeforlinux/Cache \
        --exclude=.local \
        --exclude=.var/app/app.organicmaps.desktop/data \
        --exclude=.steam \
        --exclude=.smartgit/updates \
        --exclude=.wine*/*/windows/ \
        --exclude=.googleearth \
        --exclude=*/.Genymobile \
        --exclude=go/pkg \
        --exclude=.apt \
        --exclude=.npm \
        --exclude=.gradle \
        --exclude=Android \
        --exclude=build/intermediates \
        --exclude=build/*.obj \
        .
    echo "${file}"
}
mkalias_with_prefix 'backup_home'

backup_etc()
{
    backup_dir=$1
    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
    #ask_continue && return
    cd /
    file="${backup_dir}/$(hostname)_sys_etc_backup_$(backup_date).tgz"
    sudo tar cvpzf "${file}" \
        /etc 
    echo "${file}"
}
mkalias_with_prefix 'backup_etc'

backup_sys()
{
    backup_dir=$1
    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
    #ask_continue && return
    cd /
    file="${backup_dir}/$(hostname)_sysbackup_$(backup_date).tgz"
    sudo tar cvpzf "${file}" \
        --exclude=/*_sysbackup_*.tgz \
        --exclude=/proc \
        --exclude=/dev \
        --exclude=/lost+found \
        --exclude=/mnt \
        --exclude=/run/media \
        --exclude=/sys \
        --exclude=/home \
        --exclude=/media \
        --exclude=/var/log \
        --exclude=/var/cache \
        --exclude=/var/lib/flatpak \
        --exclude=/var/tmp \
        --exclude=/usr/share \
        --exclude=/tmp \
        --exclude=/opt \
        /
    echo "${file}"
}
mkalias_with_prefix 'backup_sys'

backup_firefox_and_del_old_files()
{
    backup_dir=$1
    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
    #ask_continue && return

    backup_host_dir="${backup_dir}/$(hostname)"
    mkdir "${backup_host_dir}"
    backup_ff_dir="${backup_host_dir}/firefox"
    mkdir "${backup_ff_dir}"

    backup_firefox "${backup_ff_dir}"
    backup_delete_old_files_by_date "${backup_ff_dir}" "_mozilla_backup_@DATE\.tgz" 2 2 2 week
}
mkalias_with_prefix 'backup_firefox_and_del_old_files'

backup_home_and_del_old_files()
{
    backup_dir=$1
    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
    #ask_continue && return

    backup_host_dir="$(pwd)/$(hostname)"
    mkdir "${backup_host_dir}"
    backup_home_dir="${backup_host_dir}/home"
    mkdir "${backup_home_dir}"

    backup_home "${backup_home_dir}"
    backup_delete_old_files_by_date "${backup_home_dir}" "_home_backup_@DATE\.tgz" 2 1 1 week
}
mkalias_with_prefix 'backup_home_and_del_old_files'

backup_sys_and_del_old_files()
{
    backup_dir=$1
    [ "$backup_dir" = '' ] && printf "Укажите папку для бекапа\n" && return
    #ask_continue && return

    backup_host_dir="$(pwd)/$(hostname)"
    mkdir "${backup_host_dir}"
    backup_sys_dir="${backup_host_dir}/sys"
    mkdir "${backup_sys_dir}"

    backup_etc "${backup_sys_dir}"
    backup_delete_old_files_by_date "${backup_sys_dir}" "_sys_etc_backup_@DATE\.tgz" 3 3 3
}
mkalias_with_prefix 'backup_sys_and_del_old_files'