<?php

namespace Payplug\PayplugWoocommerce\Gateway;

use Payplug\PayplugWoocommerce\PayplugWoocommerceHelper;

// Exit if accessed directly
use const PHP_VERSION;

if (!defined('ABSPATH')) {
    exit;
}

class PayplugGatewayRequirements
{
    public const PHP_MIN = '5.6';
    public const OPENSSL_MIN = 268439567;
    public const OPENSSL_MIN_TEXT = 'OpenSSL 1.0.1 14 Mar 2012';

    /**
     * @var PayplugGateway
     */
    private $gateway;

    /**
     * Gateway settings.
     *
     * @var array
     */
    protected $settings;

    /**
     * PayplugGatewayRequirements constructor.
     *
     * @param PayplugGateway $gateway
     */
    public function __construct(PayplugGateway $gateway)
    {
        $this->gateway = $gateway;
        $this->settings = PayplugWoocommerceHelper::get_payplug_options();
    }

    /**
     * Check if all gateway requirements are fulfilled.
     *
     * @return bool
     */
    public function satisfy_requirements()
    {
        return $this->valid_php()
               && $this->valid_curl()
               && $this->valid_openssl()
               && $this->valid_currency()
               && $this->valid_account();
    }

    /**
     * @return array
     */
    public function curl_requirement()
    {
        return [
            'status' => $this->valid_curl(),
            'text' => __('payplug_section_status_curl', 'payplug'),
        ];
    }

    /**
     * @return array
     */
    public function php_requirement()
    {
        return [
            'status' => $this->valid_php(),
            'text' => __('payplug_section_status_php', 'payplug'),
        ];
    }

    /**
     * @return array
     */
    public function openssl_requirement()
    {
        return [
            'status' => $this->valid_openssl(),
            'text' => __('payplug_section_status_ssl', 'payplug'),
        ];
    }

    /**
     * @return array
     */
    public function currency_requirement()
    {
        return [
            'status' => $this->valid_currency(),
            'text' => __('payplug_section_status_currency', 'payplug'),
        ];
    }

    /**
     * @return array
     */
    public function account_requirement()
    {
        return [
            'status' => $this->valid_account(),
            'text' => __('payplug_section_status_account', 'payplug'),
        ];
    }

    /**
     * Check if CURL is available and support SSL
     *
     * @return bool
     */
    public function valid_curl()
    {
        if (!function_exists('curl_init') || !function_exists('curl_exec')) {
            return false;
        }

        // Also Check for SSL support
        $curl_version = curl_version();
        if (!(CURL_VERSION_SSL & $curl_version['features'])) {
            return false;
        }

        return true;
    }

    /**
     * Check if PHP version is equal or above the minimum supported.
     *
     * @return bool
     */
    public function valid_php()
    {
        return version_compare(PHP_VERSION, self::PHP_MIN, '>=');
    }

    /**
     * Check if OPENSSL version is equal or above the minimum supported.
     *
     * @return bool
     */
    public function valid_openssl()
    {
        return OPENSSL_VERSION_NUMBER >= self::OPENSSL_MIN;
    }

    /**
     * Check if the shop currency is Euro.
     *
     * @return bool
     */
    public function valid_currency()
    {
        return 'EUR' === get_woocommerce_currency();
    }

    /**
     * Check if the user is logged in.
     *
     * @return bool
     */
    public function valid_account()
    {
        return $this->gateway->user_logged_in();
    }
}