#!/bin/bash
#
# zammad backup script functions
#

function get_backup_date () {
    TIMESTAMP="$(date +'%Y%m%d%H%M%S')"

    if [ "${DEBUG}" == "yes" ]; then
	echo "timestamp is ${TIMESTAMP}"
    fi
}

function delete_old_backups () {
    test -d ${BACKUP_DIR} && find ${BACKUP_DIR}/*_zammad_*.gz -type f -mtime +${HOLD_DAYS} -exec rm -r \;
}

function get_db_credentials () {
    DB_ADAPTER="$(grep 'adapter:' < ${ZAMMAD_DIR}/${DATABASE_CONFIG} | sed -e 's/.*adapter:\(\| \)//g')"
    DB_NAME="$(grep 'database:' < ${ZAMMAD_DIR}/${DATABASE_CONFIG} | sed -e 's/.*database:\(\| \) //g')"
    DB_USER="$(grep 'username:' < ${ZAMMAD_DIR}/${DATABASE_CONFIG} | sed -e 's/.*username:\(\| \)//g')"
    DB_PASS="$(grep 'password:' < ${ZAMMAD_DIR}/${DATABASE_CONFIG} | sed -e 's/.*password:\(\| \)//g')"

    if [ "${DEBUG}" == "yes" ]; then
	echo "adapter=${DB_ADAPTER} dbname=${DB_NAME} dbuser=${DB_USER} dbpass=${DB_PASS}"
    fi
}

function backup_dir_create () {
    test -d ${BACKUP_DIR} || mkdir -p ${BACKUP_DIR}

    if [ "${DEBUG}" == "yes" ]; then
	echo "backup dir is ${BACKUP_DIR}"
    fi
}

function backup_files () {
    tar -czf ${BACKUP_DIR}/${TIMESTAMP}_zammad_files.tar.gz ${ZAMMAD_DIR}
}

function backup_db () {
    if [ "${DB_ADAPTER}" == "mysql2" ]; then
	mysqldump --opt --single-transaction ${DB_NAME} | gzip > ${BACKUP_DIR}/${TIMESTAMP}_zammad_db.mysql.gz
    elif [ "${DB_ADAPTER}" == "postgresql" ]; then
	su -c "pg_dump ${DB_NAME} | gzip > ${BACKUP_DIR}/${TIMESTAMP}_zammad_db.psql.gz" postgres
    else
	echo "ADAPTER not found. if its sqlite backup is already saved in filebackup"
    fi
}

function check_database_config_exists () {
    if [ -f ${ZAMMAD_DIR}/${DATABASE_CONFIG} ]; then
	get_db_credentials
    else
	echo "${ZAMMAD_DIR}/${DATABASE_CONFIG} is missing. is zammad configured yet?"
	exit 1
    fi
}