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<?php
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/*
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 * OIDplus 2.0
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 * Copyright 2019 - 2023 Daniel Marschall, ViaThinkSoft
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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namespace ViaThinkSoft\OIDplus;
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// phpcs:disable PSR1.Files.SideEffects
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\defined('INSIDE_OIDPLUS') or die;
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// phpcs:enable PSR1.Files.SideEffects
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class OIDplusSqlSlangPluginPgSQL extends OIDplusSqlSlangPlugin {
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        public static function id(): string {
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                return 'pgsql';
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        }
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        public function natOrder($fieldname, $order='asc'): string {
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                $order = strtolower($order);
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                if (($order != 'asc') && ($order != 'desc')) {
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                        throw new OIDplusException(_L('Invalid order "%1" (needs to be "asc" or "desc")',$order));
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                }
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                $out = array();
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                $max_arc_len = OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_ARC_SIZE') > 131072 ? 131072 : OIDplus::baseConfig()->getValue('LIMITS_MAX_OID_ARC_SIZE'); // Limit of the "numeric()" type
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                // 1. Sort by namespace (oid, guid, ...)
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                $out[] = "SPLIT_PART($fieldname, ':', 1) $order";
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                // 2. Only if namespace is 'oid:': Sort OID as integer array
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                $out[] = "STRING_TO_ARRAY(SPLIT_PART($fieldname, 'oid:', 2), '.')::numeric($max_arc_len)[] $order";
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                // 3. Otherwise order by ID
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                $out[] = "$fieldname $order";
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                return implode(', ', $out);
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        }
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        public function sqlDate(): string {
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                return 'now()';
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        }
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        public function detect(OIDplusDatabaseConnection $db): bool {
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                try {
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                        $vers = $db->query("select version() as dbms_version")->fetch_object()->dbms_version;
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                        $vers = strtolower($vers);
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                        return strpos($vers, 'postgresql') !== false;
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                } catch (\Exception $e) {
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                        return false;
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                }
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        }
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        public function insert_id(OIDplusDatabaseConnection $db): int {
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                $res = $db->query("SELECT LASTVAL() AS ID");
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                $row = $res->fetch_array();
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                return (int)$row['ID'];
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        }
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        public function setupSetTablePrefix($cont, $table, $prefix): string {
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                $cont = str_replace('"'.$table.'"', '"'.$prefix.$table.'"', $cont);
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                $cont = str_replace('"index_'.$table, '"index_'.$prefix.$table, $cont);
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                return $cont;
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        }
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        public function setupCreateDbIfNotExists($database): string {
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                return "-- CREATE DATABASE $database;\n\n";
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        }
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        public function setupUseDatabase($database): string {
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                return "-- \connect $database;\n\n";
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        }
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        public function isNullFunction($expr1, $expr2): string {
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                return "coalesce($expr1, $expr2)";
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        }
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        public function filterQuery($sql): string {
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                return $sql;
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        }
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        public function getSQLBool($bool): string {
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                return $bool ? '1' : '0';
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        }
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        public function escapeString($str): string {
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                return str_replace("'", "''", $str);
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        }
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}