<?php

namespace Payplug\PayplugWoocommerce\Gateway;

// Exit if accessed directly
if (!defined('ABSPATH')) {
    exit;
}

use libphonenumber\PhoneNumberFormat;
use libphonenumber\PhoneNumberType;
use libphonenumber\PhoneNumberUtil;
use Payplug\PayplugWoocommerce\PayplugWoocommerceHelper;

class PayplugAddressData
{
    const DELIVERY_TYPE_BILLING = 'BILLING';
    const DELIVERY_TYPE_VERIFIED = 'VERIFIED';
    const DELIVERY_TYPE_NEW = 'NEW';
    const DELIVERY_TYPE_SHIP_TO_STORE = 'SHIP_TO_STORE';
    const DELIVERY_TYPE_DIGITAL_GOODS = 'DIGITAL_GOODS';
    const DELIVERY_TYPE_TRAVEL_OR_EVENT = 'TRAVEL_OR_EVENT';
    const DELIVERY_TYPE_OTHER = 'OTHER';

    public static $address_fields = [
        'address1',
        'address2',
        'postcode',
        'city',
        'state',
        'country',
    ];

    /**
     * @var array
     */
    protected $billing;

    /**
     * @var array
     */
    protected $shipping;

    /**
     * Get address data from order.
     *
     * @param $order
     *
     * @throws \InvalidArgumentException
     *
     * @return PayplugAddressData
     */
    public static function from_order($order)
    {
        if (!is_a($order, '\WC_Order')) {
            throw new \InvalidArgumentException(
                sprintf('Expected WC_Order object, got %s', get_class($order))
            );
        }

        $address_data = new self();
        $address_data->prepare_address_data($order);

        return $address_data;
    }

    /**
     * Check if an address has already been used by a customer
     *
     * @param int $customer
     * @param string $hash
     *
     * @return bool
     */
    public static function address_already_used($customer, $hash)
    {
        $hash_list = self::get_customer_addresses_hash($customer);

        return !empty($hash_list) && in_array($hash, $hash_list);
    }

    /**
     * Get the list of hash of all addresses used by the customer
     *
     * @param int $customer
     *
     * @return array
     */
    public static function get_customer_addresses_hash($customer)
    {
        $hash_list = get_user_meta($customer, 'payplug_addresses_hash', true);

        return is_array($hash_list) ? $hash_list : [];
    }

    /**
     * Update the list of hash of all addresses used by the customer
     *
     * @param int $customer
     * @param array $hash_list
     *
     * @return bool
     */
    public static function update_customer_addresses_hash($customer, $hash_list)
    {
        $result = update_user_meta($customer, 'payplug_addresses_hash', $hash_list);

        return false !== $result;
    }

    /**
     * Hash an address
     *
     * @param array $address
     *
     * @return string
     */
    public static function hash_address($address)
    {
        $to_hash = '';
        foreach (self::$address_fields as $field) {
            if (empty($address[$field])) {
                continue;
            }

            $to_hash .= strtolower(remove_accents($address[$field]));
        }

        return md5($to_hash);
    }

    /**
     * Get billing data.
     *
     * @return array|null
     */
    public function get_billing()
    {
        return (!empty($this->billing)) ? $this->billing : null;
    }

    /**
     * Get shipping data.
     *
     * @return array|null
     */
    public function get_shipping()
    {
        return (!empty($this->shipping)) ? $this->shipping : null;
    }

    /**
     * Prepare data for billing and shipping.
     *
     * @param \WC_Order $order
     */
    protected function prepare_address_data($order)
    {
        $customer = PayplugWoocommerceHelper::is_pre_30() ? $order->customer_user : $order->get_customer_id();

        $billing_first_name = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_first_name : $order->get_billing_first_name();
        $billing_last_name = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_last_name : $order->get_billing_last_name();
        $billing_email = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_email : $order->get_billing_email();
        $billing_address1 = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_address_1 : $order->get_billing_address_1();
        $billing_address2 = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_address_2 : $order->get_billing_address_2();
        $billing_postcode = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_postcode : $order->get_billing_postcode();
        $billing_city = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_city : $order->get_billing_city();
        $billing_country = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_country : $order->get_billing_country();
        $billing_company = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_company : $order->get_billing_company();
        if (empty($billing_company)) {
            $billing_company = $billing_first_name . ' ' . $billing_last_name;
        }

        if (!PayplugWoocommerceHelper::is_country_supported($billing_country)) {
            $billing_country = PayplugWoocommerceHelper::get_default_country();
        }

        $this->billing = [
            'first_name' => $this->limit_length($billing_first_name),
            'last_name' => $this->limit_length($billing_last_name),
            'email' => $this->limit_length($billing_email, 255),
            'address1' => $this->limit_length($billing_address1, 255),
            'postcode' => $this->limit_length($billing_postcode, 16),
            'city' => $this->limit_length($billing_city),
            'country' => $this->limit_length($billing_country, 2),
            'company_name' => $this->limit_length($billing_company),
        ];

        if (!empty($billing_address2)) {
            $this->billing['address2'] = $this->limit_length($billing_address2, 255);
        }

        // We need to know if current cart contain products we will be shipped to the customer
        // to set the correct `delivery_type` value
        if ($order->needs_shipping_address()) {
            $has_shipping_address = PayplugWoocommerceHelper::is_pre_30()
                ? $order->shipping_address_1
                : $order->get_shipping_address_1();

            if ($has_shipping_address && !wc_ship_to_billing_address_only()) {
                $shipping_first_name = PayplugWoocommerceHelper::is_pre_30() ? $order->shipping_first_name : $order->get_shipping_first_name();
                $shipping_last_name = PayplugWoocommerceHelper::is_pre_30() ? $order->shipping_last_name : $order->get_shipping_last_name();
                // Using email from billing address since Woocommerce doesn't provide one for the shipping address by default.
                $shipping_email = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_email : $order->get_billing_email();
                $shipping_address1 = PayplugWoocommerceHelper::is_pre_30() ? $order->shipping_address_1 : $order->get_shipping_address_1();
                $shipping_address2 = PayplugWoocommerceHelper::is_pre_30() ? $order->shipping_address_2 : $order->get_shipping_address_2();
                $shipping_postcode = PayplugWoocommerceHelper::is_pre_30() ? $order->shipping_postcode : $order->get_shipping_postcode();
                $shipping_city = PayplugWoocommerceHelper::is_pre_30() ? $order->shipping_city : $order->get_shipping_city();
                $shipping_country = PayplugWoocommerceHelper::is_pre_30() ? $order->shipping_country : $order->get_shipping_country();
                $shipping_company = PayplugWoocommerceHelper::is_pre_30() ? $order->shipping_company : $order->get_shipping_company();

                if (empty($shipping_company)) {
                    $shipping_company = $shipping_first_name . ' ' . $shipping_last_name;
                }

                if (!PayplugWoocommerceHelper::is_country_supported($shipping_country)) {
                    $shipping_country = PayplugWoocommerceHelper::get_default_country();
                }

                $this->shipping = [
                    'first_name' => $this->limit_length($shipping_first_name),
                    'last_name' => $this->limit_length($shipping_last_name),
                    'email' => $this->limit_length($shipping_email, 255),
                    'address1' => $this->limit_length($shipping_address1, 255),
                    'postcode' => $this->limit_length($shipping_postcode, 16),
                    'city' => $this->limit_length($shipping_city),
                    'country' => $this->limit_length($shipping_country, 2),
                    'company_name' => $this->limit_length($shipping_company),
                ];

                if (!empty($shipping_address2)) {
                    $this->shipping['address2'] = $this->limit_length($shipping_address2, 255);
                }

                if ($customer > 0) {
                    $address_hash = self::hash_address($this->shipping);
                    $address_already_used = self::address_already_used($customer, $address_hash);

                    // Set the delivery_type to `VERIFIED` if the customer has already used the address before
                    // otherwise set it to `NEW` since we have separate shipping address
                    $this->shipping['delivery_type'] = ($address_already_used)
                        ? self::DELIVERY_TYPE_VERIFIED
                        : self::DELIVERY_TYPE_NEW;
                } else {
                    // Set the delivery_type to `NEW` since we have separate shipping address
                    $this->shipping['delivery_type'] = self::DELIVERY_TYPE_NEW;
                }
            } else {
                $this->shipping = $this->billing;

                if ($customer > 0) {
                    $address_hash = self::hash_address($this->shipping);
                    $address_already_used = self::address_already_used($customer, $address_hash);

                    // Set the delivery_type to `VERIFIED` if the customer has already used the address before
                    // otherwise set it to `BILLING` since we reuse the billing address for shipping
                    $this->shipping['delivery_type'] = ($address_already_used)
                        ? self::DELIVERY_TYPE_VERIFIED
                        : self::DELIVERY_TYPE_BILLING;
                } else {
                    // Set the delivery_type to `BILLING` since we reuse the billing address for shipping
                    $this->shipping['delivery_type'] = self::DELIVERY_TYPE_BILLING;
                }
            }
        } else {
            // Set the delivery_type to `OTHER` since we dont't need to ship the products
            $this->shipping = $this->billing;
            $this->shipping['delivery_type'] = self::DELIVERY_TYPE_OTHER;
        }

        // Maybe set the phone field if available
        $country = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_country : $order->get_billing_country();
        $phone = PayplugWoocommerceHelper::is_pre_30() ? $order->billing_phone : $order->get_billing_phone();
        if (!empty($phone) && !empty($country)) {
            try {
                $phone_number_util = PhoneNumberUtil::getInstance();
                $phone_number = $phone_number_util->parse($phone, $country);

                if (!$phone_number_util->isValidNumber($phone_number)) {
                    throw new \Exception('Invalid phone number');
                }

                if (PhoneNumberType::MOBILE === $phone_number_util->getNumberType($phone_number)) {
                    $this->billing['mobile_phone_number'] = $phone_number_util->format($phone_number, PhoneNumberFormat::E164);
                    $this->shipping['mobile_phone_number'] = $phone_number_util->format($phone_number, PhoneNumberFormat::E164);
                } else {
                    $this->billing['landline_phone_number'] = $phone_number_util->format($phone_number, PhoneNumberFormat::E164);
                }
            } catch (\Exception $e) {
                // Fail to parse phone number.
                // Could be an incorrect number or the number doesn't belong to the billing country.
            }
        }
    }

    /**
     * Limit string length.
     *
     * @param string $value
     * @param int $maxlength
     *
     * @return string
     */
    protected function limit_length($value, $maxlength = 100)
    {
        if (!empty($value)) {
            $value = (strlen($value) > $maxlength) ? substr($value, 0, $maxlength) : $value;
        }

        return $value;
    }
}