<?php

namespace ByJG\AnyDataset\Lists;

use ByJG\AnyDataset\Core\GenericIterator;
use ByJG\AnyDataset\Core\IteratorFilter;
use ByJG\AnyDataset\Core\Row;

class ArrayDatasetIterator extends GenericIterator
{
    /** @var array */
    protected array $rows;

    /**
     * Enter description here...
     *
     * @var array
     */
    protected array $keys;

    /** /* @var int */
    protected int $index;

    /** @var Row */
    protected ?Row $currentRow;

    /** @var IteratorFilter|null */
    protected ?IteratorFilter $filter;

    /** @var string|null */
    protected ?string $propertyIndexName;

    /** @var string|null */
    protected ?string $propertyKeyName;

    /**
     * @param array $rows
     * @param IteratorFilter|null $filter
     * @param string|null $propertyIndexName
     * @param string|null $propertyKeyName
     */
    public function __construct(
        array $rows,
        ?IteratorFilter $filter,
        ?string $propertyIndexName = '__id',
        ?string $propertyKeyName = '__key',
    ) {
        $this->index = 0;
        $this->currentRow = null;
        $this->rows = $rows;
        $this->keys = array_keys($rows);
        $this->filter = $filter;

        $this->propertyIndexName = $propertyIndexName;
        $this->propertyKeyName = $propertyKeyName;
    }

    /**
     * @return int
     */
    public function count(): int
    {
        return count($this->rows);
    }

    /**
     * @return bool
     * @throws \ByJG\Serializer\Exception\InvalidArgumentException
     */
    public function hasNext(): bool
    {
        if (!empty($this->currentRow)) {
            return true;
        }

        $ix = $this->index++;

        if ($ix >= count($this->rows)) {
            return false;
        }

        $key = $this->keys[$ix];
        $cols = $this->rows[$key];

        $arr = [];
        if (!empty($this->propertyIndexName)) {
            $arr[$this->propertyIndexName] = $ix;
        }
        if (!empty($this->propertyKeyName)) {
            $arr[$this->propertyKeyName] = $key;
        }
        foreach ($cols as $key => $value) {
            $arr[strtolower($key)] = $value;
        }

        $row = new Row($arr);

        if (empty($this->filter) || $this->filter->match([$row])) {
            $this->currentRow = $row;
            return true;
        }

        return $this->hasNext();
    }

    /**
     * @return Row|null
     * @throws \ByJG\Serializer\Exception\InvalidArgumentException
     */
    public function moveNext(): ?Row
    {
        if (!$this->hasNext()) {
            return null;
        }

        $row = $this->currentRow;
        $this->currentRow = null;

        return $row;
    }

    public function key(): int
    {
        return $this->index;
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTI3MDU3MTM1NDk2OTc4OSA1OTYyODY0MzUzNjE4MTA0IDQ4NDg1OTA4MDczMDExMDY=