<?php
function http_request($url,$data=null){
	$ch=curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	if (!empty($data)){
		curl_setopt($ch, CURLOPT_POST, 1);
		curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
	}
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	$output=curl_exec($ch);
	curl_close($ch);
	return $output;
}
function write_log($activation){

	$dir=CONFIG_ADDR."/../Log";
	if (!is_dir($dir)){
		mkdir($dir);
	}
	$open=fopen($dir."/Function_log.txt","a");
	fwrite($open,date("Y-m-d H:i:s")."\t".$activation."\r\n");
	fclose($open);
}
function downloadImageFromWeiXin($url){
	$ch=curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_HEADER, 0);
	curl_setopt($ch, CURLOPT_NOBODY, 0);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	
	$body=curl_exec($ch);
	$header=curl_getinfo($ch);
	curl_close($ch);
	return array_merge(array('body'=>$body),array('header'=>$header));
}
function downfile($file)
{
	$date=basename($file);
	Header( "Content-type:  image/png");
	Header( "Accept-Ranges:   bytes ");
	Header( "Accept-Length: " .filesize($file));
	header( "Content-Disposition:   attachment;   filename= {$date}");
	readfile($file);
}
function getAccesstoken(){
	// access_token 应该全局存储与更新，以下代码以写入到文件中做示例
	$data = json_decode(get_php_file("access_token.php"));
	if ($data->expire_time < time()) {
		// 如果是企业号用以下URL获取access_token
		// $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";
		$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".APPID."&secret=".APPSECRET;
		$res = json_decode(http_request($url));
		$access_token = $res->access_token;
		write_log("url获取的token:".$access_token);
		if ($access_token) {
			$data->expire_time = time() + 3600;
			$data->access_token = $access_token;
			set_php_file("access_token.php", json_encode($data));
			write_log("生成access_token:".$access_token);
		}
	} else {
		$access_token = $data->access_token;
		write_log("文件中读取的token:".$access_token);
	}
	/* $dir=__DIR__."/../Log/";
	
	if (!is_dir($dir)){
		mkdir($dir);
	}
	$token_file=$dir.'/access_token';
	if (file_exists($token_file) && time()-filemtime($token_file)<4800){
		write_log("menu--文件中读取的token:".file_get_contents($token_file));
		$access_token= file_get_contents($token_file);
	}else{
		$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".APPID."&secret=".APPSECRET;
		$result=http_request($url);
		if(!$result){
			write_log("menu-获取token出错");
			echo "menu-获取token出错";
			exit;
		}
	
		$result_obj=json_decode($result);
		file_put_contents($token_file, $result_obj->access_token);
		write_log("menu-url获取的token:".$result_obj->access_token);
		$access_token= $result_obj->access_token;
	} */
	return $access_token;
}
function get_php_file($filename) {
	$dir=__DIR__."/../Log/";
	if (!is_dir($dir)){
		mkdir($dir);
	}
	$token_file=$dir.$filename;
	return trim(substr(file_get_contents($token_file), 15));
}
function set_php_file($filename, $content) {
	$dir=__DIR__."/../Log/";
	if (!is_dir($dir)){
		mkdir($dir);
	}
	$token_file=$dir.$filename;
	$fp = fopen($token_file, "w");
	fwrite($fp, "<?php exit();?>" . $content);
	fclose($fp);
}

function convert_baidumap_to_tencentmap( &$lat, &$lng ) {
	$x_pi = 3.14159265358979324 * 3000.0 / 180.0;
	$x = $lng - 0.0065;
	$y = $lat - 0.006;
	$z = sqrt(($x*$x+$y*$y)) - 0.00002 * sin($y * $x_pi);
	$theta = atan2($y,$x) - 0.000003 * cos($x * $x_pi);
	$lng = $z * cos($theta);
	$lat = $z * sin($theta);
}