<?php

namespace Payment\Lib;

use Dever;

class Payfort extends Core
{
    private $config = array();
    private $language = 'en';
    private $url = 'https://checkout.payfort.com/FortAPI/paymentPage';

    public function __construct($name, $config)
    {
        $this->name = $name;
        $this->config = $config;
    }

    private function getType($type, $currency)
    {
        if ($type < 5 && $currency == 'SAR') {
            $type = 4;
        }
        $name = $value = $method = $command = '';
        switch ($type) {
            case 1:
                # 目前不支持
                $name = 'Pay with credit cards (Redirection)';
                $method = 'redirection';
                break;

            case 2:
                $name = 'Pay with installments (Redirection)';
                $method = 'redirection';
                break;

            case 3:
                $name = 'Pay with NAPS';
                $value = 'NAPS';
                $method = 'redirection';
                break;

            case 4:
                $name = 'Pay with SADAD';
                $value = 'SADAD';
                $currency = 'SAR';
                $method = 'redirection';
                $command = 'AUTHORIZATION';
                break;

            case 11:
                $name = 'Pay with credit cards (Merchant Page)';
                $method = 'page';
                $currency = '';
                $command = 'TOKENIZATION';
                break;

            case 12:
                $name = 'Pay with installments (Merchant Page)';
                $method = 'page';
                break;

            case 21:
                $name = 'Pay with credit cards (Merchant Page 2.0)';
                $method = 'page_v2';
                break;

        }

        $currency = strtoupper($currency);
        return array
        (
            'id' => $type,
            'name' => $name,
            'value' => $value,
            'method' => $method,
            'currency' => $currency,
            'command' => $command,
        );
    }

    /**
     * 获取统一下单的基本信息
     */
    public function order($uid, $account, $product_name, $amount, $currency, $type = 1)
    {
        $type = $this->getType($type, $currency);
        $order_id = $this->createOrder($uid, $this->name, $product_name, $amount, $type['currency'], $type['name']);

        $method = $type['method'];

        $param = array();
        if ($type['currency']) {
            $param['amount'] = $amount;
            $param['currency'] = $type['currency'];
        }

        $param = $this->param($order_id, $type['command'], $type['value'], $param);

        return $this->$method($param);
    }

    /**
     * 通知回调
     *
     * @return mixed
     */
    public function notify()
    {
        return 1;
    }

    /**
     * 生成基本参数
     *
     * @return mixed
     */
    private function param($order_id, $command, $payment_option, $param = array())
    {
        $param['access_code'] = $this->config['access_code'];
        $param['merchant_identifier'] = $this->config['merchant_id'];
        $param['merchant_reference'] = $order_id;
        $param['language'] = $this->language;
        if ($payment_option) {
            $param['payment_option'] = $payment_option;
        }
        # AUTHORIZATION（授权）、PURCHASE（购买） TOKENIZATION CHECK_STATUS
        $param['command'] = $command;
        $param['return_url'] = Dever::url('api.notify?order_id=' . $order_id, 'payment');
        $param['signature'] = $this->signature($this->config['request_phrase'], $param);
        return $param;
    }

    /**
     * 页面付款，下单后需要填写用户信息
     *
     * @return mixed
     */
    public function page($param)
    {
        print_r($param);die;
        $result = Dever::curl($this->url, $param, 'post');
        print_r($result);die;
    }

    /**
     * 直接付款 Redirection
     *
     * @return mixed
     */
    public function redirection($param)
    {
        $html = '<div>loading...</div><form method="post" action="'.$this->url.'" id="payment" name="payment" style="display:none;">';

        foreach ($param as $k => $v) {
            $html .= '<p>'.$k.'：<input type="text" name="'.htmlentities($k).'" value="'.htmlentities($v).'"></p>';
        }
        
        $html .= '<input type="submit" />';


        $html .= '</form><script>document.getElementById("payment").submit();</script>';

        echo $html;die;
    }

    /**
     * signature
     *
     * @return mixed
     */
    private function signature($phrase, $request)
    {
        ksort($request);

        $signature_string = '';
        foreach ($request as $k => $v) {
            $signature_string .= $k . '=' . $v;
        }
        $signature_string = $phrase . $signature_string . $phrase;
        return hash('sha256', $signature_string);
    }
}