openstamanager/src/Util/Generator.php

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<?php
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/*
* OpenSTAManager: il software gestionale open source per l'assistenza tecnica e la fatturazione
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* Copyright (C) DevCode s.r.l.
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*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
namespace Util;
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use Carbon\Carbon;
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use Illuminate\Database\Capsule\Manager;
/**
* Classe dedicata alla gestione e all'interpretazione delle stringhe personalizzate.
*
* @since 2.3
*/
class Generator
{
/** @var array Elenco delle varabili da sostituire nel pattern */
protected static $replaces = [
'YYYY' => [
'date' => 'Y',
],
'yy' => [
'date' => 'y',
],
'm' => [
'date' => 'm',
],
'd' => [
'date' => 'd',
],
'H' => [
'date' => 'H',
],
'i' => [
'date' => 'i',
],
's' => [
'date' => 'd',
],
];
/**
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* Genera un pattern sulla base del precedente.
*
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* @param string $pattern
* @param string $last
* @param int $quantity
* @param array $values
*
* @return string
*/
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public static function generate($pattern, $last = null, $quantity = 1, $values = [], $date = null)
{
// Costruzione del pattern
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$result = self::complete($pattern, $values, $date);
$length = substr_count($result, '#');
// Individuazione dei valori precedenti
$previous = self::read($pattern, $last);
$number = 1;
if (isset($previous['number'])) {
$number = intval($previous['number']) + $quantity;
}
$result = preg_replace('/#{1,}/', str_pad($number, $length, '0', STR_PAD_LEFT), $result);
return $result;
}
/**
* Completa un determinato pattern con le informazioni di base.
*
* @return string
*/
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public static function complete($pattern, $values = [], $date = null)
{
// Costruzione del pattern
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$replaces = array_merge(self::getReplaces($date), $values);
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$keys = array_keys($replaces);
$values = array_column($replaces, 'value');
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$result = str_replace($keys, $values, $pattern);
return $result;
}
/**
* Restituisce i valori utilizzati sul pattern.
*
* @return array
*/
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public static function read($pattern, $string, $date = null)
{
// Costruzione del pattern
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$replaces = self::getReplaces($date);
$replaces['#'] = [
'regex' => '(?<number>[0-9]+)',
];
$values = array_column($replaces, 'regex');
$pattern = preg_replace('/#{1,}/', '#', $pattern);
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$pattern = str_replace('\\#', '#', preg_quote($pattern, '/'));
$pattern = str_replace(array_keys($replaces), array_values($values), $pattern);
// Individuazione dei valori
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preg_match('/^'.$pattern.'/', (string) $string, $m);
return array_filter($m, 'is_string', ARRAY_FILTER_USE_KEY);
}
/**
* Restituisce l'elenco delle variabili da sostituire normalizzato per l'utilizzo.
*
* @return array
*/
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public static function getReplaces($date = null)
{
$replaces = self::$replaces;
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$date_object = new Carbon($date);
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foreach ($replaces as $key => $value) {
if (!isset($replaces[$key]['value'])) {
if (isset($replaces[$key]['date'])) {
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$replaces[$key]['value'] = $date_object->format($replaces[$key]['date']);
} else {
$replaces[$key]['value'] = $key;
}
}
if (!isset($replaces[$key]['regex'])) {
$replaces[$key]['regex'] = '(?<'.preg_quote($key).'>.{'.strlen($replaces[$key]['value']).'})';
}
}
return $replaces;
}
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/**
* Interpreta una data specifica per la sostituzione nei pattern.
*
* @return array
*/
public static function dateToPattern($date)
{
$replaces = self::$replaces;
$date = strtotime($date);
$results = [];
foreach ($replaces as $key => $value) {
if (isset($replaces[$key]['date'])) {
$results[$key]['value'] = date($replaces[$key]['date'], $date);
}
}
return $results;
}
/**
* Restituisce la maschera specificata per il segmento indicato.
*
* @param int $id_segment
*
* @return string
*/
public static function getMaschera($id_segment)
{
$database = database();
$maschera = $database->fetchOne('SELECT pattern FROM zz_segments WHERE id = :id_segment', [
':id_segment' => $id_segment,
]);
return $maschera['pattern'];
}
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public static function getPreviousFrom($maschera, $table, $field, $where = [], $date = null)
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{
$order = static::getMascheraOrder($maschera, $field);
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$maschera = Generator::complete($maschera, [], $date);
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$maschera = str_replace('#', '%', $maschera);
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$query = Manager::table($table)->select($field)->where($field, 'like', $maschera)->orderByRaw($order);
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foreach ($where as $and) {
$query->whereRaw($and);
}
$result = $query->first();
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return isset($result->{$field}) ? $result->{$field} : null;
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}
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/**
* Metodo per l'individuazione del tipo di ordine da impostare per la corretta interpretazione della maschera.
* Esempi:
* - maschere con testo iniziale (FT-####-YYYY) necessitano l'ordinamento alfabetico
* - maschere di soli numeri (####-YYYY) è necessario l'ordinamento numerico forzato.
*
* @param string $maschera
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* @param string $field
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*
* @return string
*/
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protected static function getMascheraOrder($maschera, $field)
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{
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// Query di default
$query = $field.' DESC';
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// Estraggo blocchi di caratteri standard
preg_match('/[#]+/', $maschera, $matches);
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if (!empty($matches)) {
$pos1 = strpos($maschera, (string) $matches[0]);
if ($pos1 == 0) {
$query = 'CAST('.$field.' AS UNSIGNED) DESC';
}
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}
return $query;
}
}