<?php
namespace MailPoetVendor\Doctrine\DBAL\Schema;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Doctrine\DBAL\Platforms\AbstractPlatform;
use InvalidArgumentException;
use function array_filter;
use function array_keys;
use function array_map;
use function array_search;
use function array_shift;
use function count;
use function strtolower;
class Index extends AbstractAsset implements Constraint
{
 protected $_columns = [];
 protected $_isUnique = \false;
 protected $_isPrimary = \false;
 protected $_flags = [];
 private array $options = [];
 public function __construct($name, array $columns, $isUnique = \false, $isPrimary = \false, array $flags = [], array $options = [])
 {
 $isUnique = $isUnique || $isPrimary;
 $this->_setName($name);
 $this->_isUnique = $isUnique;
 $this->_isPrimary = $isPrimary;
 $this->options = $options;
 foreach ($columns as $column) {
 $this->_addColumn($column);
 }
 foreach ($flags as $flag) {
 $this->addFlag($flag);
 }
 }
 protected function _addColumn(string $column) : void
 {
 $this->_columns[$column] = new Identifier($column);
 }
 public function getColumns()
 {
 return array_keys($this->_columns);
 }
 public function getQuotedColumns(AbstractPlatform $platform)
 {
 $subParts = $platform->supportsColumnLengthIndexes() && $this->hasOption('lengths') ? $this->getOption('lengths') : [];
 $columns = [];
 foreach ($this->_columns as $column) {
 $length = array_shift($subParts);
 $quotedColumn = $column->getQuotedName($platform);
 if ($length !== null) {
 $quotedColumn .= '(' . $length . ')';
 }
 $columns[] = $quotedColumn;
 }
 return $columns;
 }
 public function getUnquotedColumns()
 {
 return array_map([$this, 'trimQuotes'], $this->getColumns());
 }
 public function isSimpleIndex()
 {
 return !$this->_isPrimary && !$this->_isUnique;
 }
 public function isUnique()
 {
 return $this->_isUnique;
 }
 public function isPrimary()
 {
 return $this->_isPrimary;
 }
 public function hasColumnAtPosition($name, $pos = 0)
 {
 $name = $this->trimQuotes(strtolower($name));
 $indexColumns = array_map('strtolower', $this->getUnquotedColumns());
 return array_search($name, $indexColumns, \true) === $pos;
 }
 public function spansColumns(array $columnNames)
 {
 $columns = $this->getColumns();
 $numberOfColumns = count($columns);
 $sameColumns = \true;
 for ($i = 0; $i < $numberOfColumns; $i++) {
 if (isset($columnNames[$i]) && $this->trimQuotes(strtolower($columns[$i])) === $this->trimQuotes(strtolower($columnNames[$i]))) {
 continue;
 }
 $sameColumns = \false;
 }
 return $sameColumns;
 }
 public function isFullfilledBy(Index $other)
 {
 return $this->isFulfilledBy($other);
 }
 public function isFulfilledBy(Index $other) : bool
 {
 // allow the other index to be equally large only. It being larger is an option
 // but it creates a problem with scenarios of the kind PRIMARY KEY(foo,bar) UNIQUE(foo)
 if (count($other->getColumns()) !== count($this->getColumns())) {
 return \false;
 }
 // Check if columns are the same, and even in the same order
 $sameColumns = $this->spansColumns($other->getColumns());
 if ($sameColumns) {
 if (!$this->samePartialIndex($other)) {
 return \false;
 }
 if (!$this->hasSameColumnLengths($other)) {
 return \false;
 }
 if (!$this->isUnique() && !$this->isPrimary()) {
 // this is a special case: If the current key is neither primary or unique, any unique or
 // primary key will always have the same effect for the index and there cannot be any constraint
 // overlaps. This means a primary or unique index can always fulfill the requirements of just an
 // index that has no constraints.
 return \true;
 }
 if ($other->isPrimary() !== $this->isPrimary()) {
 return \false;
 }
 return $other->isUnique() === $this->isUnique();
 }
 return \false;
 }
 public function overrules(Index $other)
 {
 if ($other->isPrimary()) {
 return \false;
 }
 if ($this->isSimpleIndex() && $other->isUnique()) {
 return \false;
 }
 return $this->spansColumns($other->getColumns()) && ($this->isPrimary() || $this->isUnique()) && $this->samePartialIndex($other);
 }
 public function getFlags()
 {
 return array_keys($this->_flags);
 }
 public function addFlag($flag)
 {
 $this->_flags[strtolower($flag)] = \true;
 return $this;
 }
 public function hasFlag($flag)
 {
 return isset($this->_flags[strtolower($flag)]);
 }
 public function removeFlag($flag)
 {
 unset($this->_flags[strtolower($flag)]);
 }
 public function hasOption($name)
 {
 return isset($this->options[strtolower($name)]);
 }
 public function getOption($name)
 {
 return $this->options[strtolower($name)];
 }
 public function getOptions()
 {
 return $this->options;
 }
 private function samePartialIndex(Index $other) : bool
 {
 if ($this->hasOption('where') && $other->hasOption('where') && $this->getOption('where') === $other->getOption('where')) {
 return \true;
 }
 return !$this->hasOption('where') && !$other->hasOption('where');
 }
 private function hasSameColumnLengths(self $other) : bool
 {
 $filter = static function (?int $length) : bool {
 return $length !== null;
 };
 return array_filter($this->options['lengths'] ?? [], $filter) === array_filter($other->options['lengths'] ?? [], $filter);
 }
}