#!/usr/bin/env bash

# TODO:
# - Проверка существования БД

DB_CONNECTION=

db_connect() {
    export DB_CONNECTION="-h ${DBHOST} -d ${DBTABLE} -U ${DBUSER}"

    echo "${DBHOST}:5432:${DBTABLE}:${DBUSER}:${DBPASS}" > ~/.pgpass
    #cat ~/.pgpass
    chmod 600 ~/.pgpass
}

db_drop() {
    [[ -z "${DB_CONNECTION}" ]] && db_connect

#    psql ${DB_CONNECTION} -c "drop schema public cascade"
    PGSQL_ARGS="--clean"
}

db_create() {
#    [[ -z "${DB_CONNECTION}" ]] && db_connect

    echo "SELECT 'CREATE DATABASE ${DBTABLE}' WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = '${DBTABLE}')\gexec" | psql -h ${DBHOST} -U ${DBUSER}

#    psql ${DB_CONNECTION} -c "create schema public"
}

db_isExist() {
    [[ -z "${DB_CONNECTION}" ]] && db_connect

    false
}

db_backup() {
    [[ -z "${DB_CONNECTION}" ]] && db_connect

    pg_dump -F c -O -b ${DB_CONNECTION} | gzip > ${ARCHIVE}
}

db_restore() {
    [[ -z "${DB_CONNECTION}" ]] && db_connect

    local log_file=${ARCHIVE%.*}.log
    echo "[ Info ] pg_restore log file: ${log_file}"
    pg_restore --no-owner ${PGSQL_ARGS} ${DB_CONNECTION} ${ARCHIVE} > ${log_file}
}