#!/bin/bash

RULES_FILE=/etc/backup.rules
HOSTNAME=`hostname`
BACKUP_DIRECTORY="/root/backup"
BACKUP_FILE_NAME="`date +%d-%m-%Y`.tgz"

[ -f "~/.backuprc" ] && ~/.backuprc

[ ! -d "$BACKUP_DIRECTORY" ] && mkdir -p $BACKUP_DIRECTORY

function help() {
    echo "Usage: $0";
}

function list() {
    [ -f "$RULES_FILE" ] && cat $RULES_FILE || echo "$RULES_FILE: No such file or directory use -e option"
}

function edit() {
    mcedit $RULES_FILE
    [ -f "$RULES_FILE" ] && chmod 600 $RULES_FILE
}

function make() {
    [ -f "$RULES_FILE" ] && . $RULES_FILE || echo "$RULES_FILE: No such file or directory use -e option"
}

function to_log(){
    [ ! -z "$1" ] && echo "$1"
}

function backup_dir() {

    [ $# -le 1 ] && exit 1;

    prefix=$1
    src_dir=${@#${prefix}}
    #path=${path## }
    #src_dir=${@//${prefix}/}

    tar -zcf "$BACKUP_DIRECTORY/$prefix-$BACKUP_FILE_NAME" $src_dir > /dev/null 2>&1
    return $?
}

function backup_postgres(){
    database=$1
    user=$2
    password=$3

    if [ -z "$database" ] || [ -z "$user" ]; then
	to_log "Не все параметры заполнены"
	return 1
    fi;

    tmp="/tmp/pg-database-$database-`date +%s`.sql"

    /usr/bin/pg_dump -U $user -f $tmp $database
    if [ $? -ne 0 ]; then
	to_log "Не удалось создать резервную копию"
	return 1
    fi;

    tar -zcf "$BACKUP_DIRECTORY/pg-db-$database-$BACKUP_FILE_NAME" "$tmp" > /dev/null 2>&1
    ret=$?
    rm -f "$tmp"
    return $ret
}

function backup_mysql(){
    database=$1
    user=$2
    password=$3

    if [ -z "$database" ] || [ -z "$user" ]; then
	to_log "Не все параметры заполнены"
	return 1
    fi;

    tmp="/tmp/mysql-database-$database-`date +%s`.sql"

    mysqldump -u$user --password=$password $database > $tmp
    if [ $? -ne 0 ]; then
	to_log "Не удалось создать резервную копию"
	return 1
    fi;

    tar -zcf "$BACKUP_DIRECTORY/mysql-db-$database-$BACKUP_FILE_NAME" "$tmp" > /dev/null 2>&1
    ret=$?
    rm -f "$tmp"
    return $ret
}


function backup_purge() {

    [ $# -le 1 ] && exit 1;

    days=$1
    path=${@#${days}}
    path=${path## }

    #echo $days

    if [ -d "$path" ]; then
	find $path -type f -mtime +$days -exec rm -f {} \;
    fi
}

i=1
for n in $@; do
    let i=i+1
    #group=\$${i};
    case "$n" in
    -l|--list) list; exit;;
    -h|--help) help; exit;;
    -e|--edit) edit; exit;;
    -m|--make) make; exit;;
    esac
done

edit