<?php

namespace Laminas\Validator;

use Exception;
use Laminas\Stdlib\ArrayUtils;
use Laminas\Validator\Exception\InvalidArgumentException;
use Traversable;

use function array_key_exists;
use function array_keys;
use function array_shift;
use function constant;
use function ctype_digit;
use function defined;
use function floor;
use function func_get_args;
use function in_array;
use function is_array;
use function is_callable;
use function is_string;
use function strlen;
use function strpos;
use function strtoupper;

class CreditCard extends AbstractValidator
{
    /**
     * Detected CCI list
     *
     * @var string
     */
    public const ALL              = 'All';
    public const AMERICAN_EXPRESS = 'American_Express';
    public const UNIONPAY         = 'Unionpay';
    public const DINERS_CLUB      = 'Diners_Club';
    public const DINERS_CLUB_US   = 'Diners_Club_US';
    public const DISCOVER         = 'Discover';
    public const JCB              = 'JCB';
    public const LASER            = 'Laser';
    public const MAESTRO          = 'Maestro';
    public const MASTERCARD       = 'Mastercard';
    public const SOLO             = 'Solo';
    public const VISA             = 'Visa';
    public const MIR              = 'Mir';

    public const CHECKSUM       = 'creditcardChecksum';
    public const CONTENT        = 'creditcardContent';
    public const INVALID        = 'creditcardInvalid';
    public const LENGTH         = 'creditcardLength';
    public const PREFIX         = 'creditcardPrefix';
    public const SERVICE        = 'creditcardService';
    public const SERVICEFAILURE = 'creditcardServiceFailure';

    /**
     * Validation failure message template definitions
     *
     * @var array
     */
    protected $messageTemplates = [
        self::CHECKSUM       => 'The input seems to contain an invalid checksum',
        self::CONTENT        => 'The input must contain only digits',
        self::INVALID        => 'Invalid type given. String expected',
        self::LENGTH         => 'The input contains an invalid amount of digits',
        self::PREFIX         => 'The input is not from an allowed institute',
        self::SERVICE        => 'The input seems to be an invalid credit card number',
        self::SERVICEFAILURE => 'An exception has been raised while validating the input',
    ];

    /**
     * List of CCV names
     *
     * @var array
     */
    protected $cardName = [
        0  => self::AMERICAN_EXPRESS,
        1  => self::DINERS_CLUB,
        2  => self::DINERS_CLUB_US,
        3  => self::DISCOVER,
        4  => self::JCB,
        5  => self::LASER,
        6  => self::MAESTRO,
        7  => self::MASTERCARD,
        8  => self::SOLO,
        9  => self::UNIONPAY,
        10 => self::VISA,
        11 => self::MIR,
    ];

    /**
     * List of allowed CCV lengths
     *
     * @var array
     */
    protected $cardLength = [
        self::AMERICAN_EXPRESS => [15],
        self::DINERS_CLUB      => [14],
        self::DINERS_CLUB_US   => [16],
        self::DISCOVER         => [16, 19],
        self::JCB              => [15, 16],
        self::LASER            => [16, 17, 18, 19],
        self::MAESTRO          => [12, 13, 14, 15, 16, 17, 18, 19],
        self::MASTERCARD       => [16],
        self::SOLO             => [16, 18, 19],
        self::UNIONPAY         => [16, 17, 18, 19],
        self::VISA             => [13, 16, 19],
        self::MIR              => [13, 16],
    ];

    /**
     * List of accepted CCV provider tags
     *
     * @var array
     */
    protected $cardType = [
        self::AMERICAN_EXPRESS => ['34', '37'],
        self::DINERS_CLUB      => ['300', '301', '302', '303', '304', '305', '36'],
        self::DINERS_CLUB_US   => ['54', '55'],
        self::DISCOVER         => [
            '6011',
            '622126',
            '622127',
            '622128',
            '622129',
            '62213',
            '62214',
            '62215',
            '62216',
            '62217',
            '62218',
            '62219',
            '6222',
            '6223',
            '6224',
            '6225',
            '6226',
            '6227',
            '6228',
            '62290',
            '62291',
            '622920',
            '622921',
            '622922',
            '622923',
            '622924',
            '622925',
            '644',
            '645',
            '646',
            '647',
            '648',
            '649',
            '65',
        ],
        self::JCB              => ['1800', '2131', '3528', '3529', '353', '354', '355', '356', '357', '358'],
        self::LASER            => ['6304', '6706', '6771', '6709'],
        self::MAESTRO          => [
            '5018',
            '5020',
            '5038',
            '6304',
            '6759',
            '6761',
            '6762',
            '6763',
            '6764',
            '6765',
            '6766',
            '6772',
        ],
        self::MASTERCARD       => [
            '2221',
            '2222',
            '2223',
            '2224',
            '2225',
            '2226',
            '2227',
            '2228',
            '2229',
            '223',
            '224',
            '225',
            '226',
            '227',
            '228',
            '229',
            '23',
            '24',
            '25',
            '26',
            '271',
            '2720',
            '51',
            '52',
            '53',
            '54',
            '55',
        ],
        self::SOLO             => ['6334', '6767'],
        self::UNIONPAY         => [
            '622126',
            '622127',
            '622128',
            '622129',
            '62213',
            '62214',
            '62215',
            '62216',
            '62217',
            '62218',
            '62219',
            '6222',
            '6223',
            '6224',
            '6225',
            '6226',
            '6227',
            '6228',
            '62290',
            '62291',
            '622920',
            '622921',
            '622922',
            '622923',
            '622924',
            '622925',
        ],
        self::VISA             => ['4'],
        self::MIR              => ['2200', '2201', '2202', '2203', '2204'],
    ];

    /**
     * Options for this validator
     *
     * @var array
     */
    protected $options = [
        'service' => null, // Service callback for additional validation
        'type'    => [], // CCIs which are accepted by validation
    ];

    /**
     * Constructor
     *
     * @param string|array|Traversable $options OPTIONAL Type of CCI to allow
     */
    public function __construct($options = [])
    {
        if ($options instanceof Traversable) {
            $options = ArrayUtils::iteratorToArray($options);
        } elseif (! is_array($options)) {
            $options      = func_get_args();
            $temp['type'] = array_shift($options);
            if (! empty($options)) {
                $temp['service'] = array_shift($options);
            }

            $options = $temp;
        }

        if (! array_key_exists('type', $options)) {
            $options['type'] = self::ALL;
        }

        $this->setType($options['type']);
        unset($options['type']);

        if (array_key_exists('service', $options)) {
            $this->setService($options['service']);
            unset($options['service']);
        }

        parent::__construct($options);
    }

    /**
     * Returns a list of accepted CCIs
     *
     * @return array
     */
    public function getType()
    {
        return $this->options['type'];
    }

    /**
     * Sets CCIs which are accepted by validation
     *
     * @param  string|array $type Type to allow for validation
     * @return CreditCard Provides a fluid interface
     */
    public function setType($type)
    {
        $this->options['type'] = [];
        return $this->addType($type);
    }

    /**
     * Adds a CCI to be accepted by validation
     *
     * @param  string|array $type Type to allow for validation
     * @return $this Provides a fluid interface
     */
    public function addType($type)
    {
        if (is_string($type)) {
            $type = [$type];
        }

        foreach ($type as $typ) {
            if ($typ === self::ALL) {
                $this->options['type'] = array_keys($this->cardLength);
                continue;
            }

            if (in_array($typ, $this->options['type'])) {
                continue;
            }

            $constant = 'static::' . strtoupper($typ);
            if (! defined($constant) || in_array(constant($constant), $this->options['type'])) {
                continue;
            }
            $this->options['type'][] = constant($constant);
        }

        return $this;
    }

    /**
     * Returns the actual set service
     *
     * @return callable
     */
    public function getService()
    {
        return $this->options['service'];
    }

    /**
     * Sets a new callback for service validation
     *
     * @param  callable $service
     * @return $this
     * @throws InvalidArgumentException On invalid service callback.
     */
    public function setService($service)
    {
        if (! is_callable($service)) {
            throw new InvalidArgumentException('Invalid callback given');
        }

        $this->options['service'] = $service;
        return $this;
    }

    /**
     * Returns true if and only if $value follows the Luhn algorithm (mod-10 checksum)
     *
     * @param  string $value
     * @return bool
     */
    public function isValid($value)
    {
        $this->setValue($value);

        if (! is_string($value)) {
            $this->error(self::INVALID, $value);
            return false;
        }

        if (! ctype_digit($value)) {
            $this->error(self::CONTENT, $value);
            return false;
        }

        $length = strlen($value);
        $types  = $this->getType();
        $foundp = false;
        $foundl = false;
        foreach ($types as $type) {
            foreach ($this->cardType[$type] as $prefix) {
                if (0 === strpos($value, $prefix)) {
                    $foundp = true;
                    if (in_array($length, $this->cardLength[$type])) {
                        $foundl = true;
                        break 2;
                    }
                }
            }
        }

        if ($foundp === false) {
            $this->error(self::PREFIX, $value);
            return false;
        }

        if ($foundl === false) {
            $this->error(self::LENGTH, $value);
            return false;
        }

        $sum    = 0;
        $weight = 2;

        for ($i = $length - 2; $i >= 0; $i--) {
            $digit  = $weight * $value[$i];
            $sum   += floor($digit / 10) + $digit % 10;
            $weight = $weight % 2 + 1;
        }

        $checksum = (10 - $sum % 10) % 10;
        if ((string) $checksum !== $value[$length - 1]) {
            $this->error(self::CHECKSUM, $value);
            return false;
        }

        $service = $this->getService();
        if (! empty($service)) {
            try {
                $callback = new Callback($service);
                $callback->setOptions($this->getType());
                if (! $callback->isValid($value)) {
                    $this->error(self::SERVICE, $value);
                    return false;
                }
            } catch (Exception $e) {
                $this->error(self::SERVICEFAILURE, $value);
                return false;
            }
        }

        return true;
    }
}
