<?php

namespace officialaccount;


use common\HttpClient;
use common\Result;

class QrCode extends AfficialAccount
{

	private $tick_url = 'https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=';
	private $temporary_url = 'https://mp.weixin.qq.com/cgi-bin/showqrcode';
	private $permanent_qr_code_url = 'https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=';

	/**
	 * @param $scene_id
	 * @return mixed
	 * @throws \Exception
	 */
	public function temporaryQrCode($scene_id)
	{
		$requestParam['expire_seconds'] = 24 * 3600 * 30;
		$requestParam['action_name'] = 'QR_SCENE';
		$requestParam['action_info[scene][scene_id]'] = $scene_id;

		$tick = $this->get_tick($requestParam);

		$client = HttpClient::NewRequest();
		return $client->get($this->temporary_url, ['ticket' => $tick]);
	}


	/**
	 * @param $scene_id
	 * @return array|mixed|\common\Result
	 * @throws \Exception
	 */
	public function permanent_qr_code($scene_id)
	{
		$requestParam['action_name'] = 'QR_LIMIT_SCENE';
		$requestParam['action_info[scene][scene_id]'] = $scene_id;

		$tick = $this->get_tick($requestParam);

		$client = HttpClient::NewRequest();
		return $client->get($this->permanent_qr_code_url, ['ticket' => $tick]);
	}


	/**
	 * @param $requestParam
	 * @return mixed
	 * @throws \Exception
	 * tick
	 */
	private function get_tick($requestParam)
	{
		$request = HttpClient::NewRequest();
		$request->setCallback(function ($body) {
			if (is_array($body)) {
				$param = ['code' => $body['errcode'], 'message' => $body['errmsg'], 'data' => $body];
			} else {
				$param = ['code' => 0, 'data' => json_decode($body, true)];
			}
			return new Result($param);
		});
		$data = $request->post($this->tick_url . $this->config->getAccessToken(), json_encode($requestParam));
		if (!$data->isResultsOK()) {
			throw new \Exception($data->getMessage());
		}
		return $data->getData('ticket');
	}

}