<?php

// Code generated by OpenAPI Generator (https://openapi-generator.tech), manual changes will be lost - read more on https://github.com/algolia/api-clients-automation. DO NOT EDIT.

namespace Algolia\AlgoliaSearch\Model\Recommend;

use Algolia\AlgoliaSearch\Model\AbstractModel;
use Algolia\AlgoliaSearch\Model\ModelInterface;

/**
 * OptionalWords Class Doc Comment.
 *
 * @category Class
 *
 * @description Words that should be considered optional when found in the query.  By default, records must match all words in the search query to be included in the search results. Adding optional words can help to increase the number of search results by running an additional search query that doesn't include the optional words. For example, if the search query is \"action video\" and \"video\" is an optional word, the search engine runs two queries. One for \"action video\" and one for \"action\". Records that match all words are ranked higher.  For a search query with 4 or more words **and** all its words are optional, the number of matched words required for a record to be included in the search results increases for every 1,000 records:  - If `optionalWords` has less than 10 words, the required number of matched words increases by 1:   results 1 to 1,000 require 1 matched word, results 1,001 to 2000 need 2 matched words. - If `optionalWords` has 10 or more words, the number of required matched words increases by the number of optional words divided by 5 (rounded down).   For example, with 18 optional words: results 1 to 1,000 require 1 matched word, results 1,001 to 2000 need 4 matched words.  For more information, see [Optional words](https://www.algolia.com/doc/guides/managing-results/optimize-search-results/empty-or-insufficient-results/#creating-a-list-of-optional-words).
 */
class OptionalWords extends AbstractModel implements ModelInterface, \ArrayAccess, \JsonSerializable
{
    /**
     * Array of property to type mappings. Used for (de)serialization.
     *
     * @var string[]
     */
    protected static $modelTypes = [
    ];

    /**
     * Array of property to format mappings. Used for (de)serialization.
     *
     * @var string[]
     */
    protected static $modelFormats = [
    ];

    /**
     * Array of attributes where the key is the local name,
     * and the value is the original name.
     *
     * @var string[]
     */
    protected static $attributeMap = [
    ];

    /**
     * Array of attributes to setter functions (for deserialization of responses).
     *
     * @var string[]
     */
    protected static $setters = [
    ];

    /**
     * Array of attributes to getter functions (for serialization of requests).
     *
     * @var string[]
     */
    protected static $getters = [
    ];

    /**
     * Associative array for storing property values.
     *
     * @var mixed[]
     */
    protected $container = [];

    /**
     * Constructor.
     */
    public function __construct() {}

    /**
     * Array of attributes where the key is the local name,
     * and the value is the original name.
     *
     * @return array
     */
    public static function attributeMap()
    {
        return self::$attributeMap;
    }

    /**
     * Array of property to type mappings. Used for (de)serialization.
     *
     * @return array
     */
    public static function modelTypes()
    {
        return self::$modelTypes;
    }

    /**
     * Array of property to format mappings. Used for (de)serialization.
     *
     * @return array
     */
    public static function modelFormats()
    {
        return self::$modelFormats;
    }

    /**
     * Array of attributes to setter functions (for deserialization of responses).
     *
     * @return array
     */
    public static function setters()
    {
        return self::$setters;
    }

    /**
     * Array of attributes to getter functions (for serialization of requests).
     *
     * @return array
     */
    public static function getters()
    {
        return self::$getters;
    }

    /**
     * Show all the invalid properties with reasons.
     *
     * @return array invalid properties with reasons
     */
    public function listInvalidProperties()
    {
        return [];
    }

    /**
     * Validate all the properties in the model
     * return true if all passed.
     *
     * @return bool True if all properties are valid
     */
    public function valid()
    {
        return 0 === count($this->listInvalidProperties());
    }

    /**
     * Returns true if offset exists. False otherwise.
     *
     * @param int $offset Offset
     */
    public function offsetExists($offset): bool
    {
        return isset($this->container[$offset]);
    }

    /**
     * Gets offset.
     *
     * @param int $offset Offset
     *
     * @return null|mixed
     */
    public function offsetGet($offset): mixed
    {
        return $this->container[$offset] ?? null;
    }

    /**
     * Sets value based on offset.
     *
     * @param null|int $offset Offset
     * @param mixed    $value  Value to be set
     */
    public function offsetSet($offset, $value): void
    {
        if (is_null($offset)) {
            $this->container[] = $value;
        } else {
            $this->container[$offset] = $value;
        }
    }

    /**
     * Unsets offset.
     *
     * @param int $offset Offset
     */
    public function offsetUnset($offset): void
    {
        unset($this->container[$offset]);
    }
}
