googlemessage.php

<?php
 
namespace Bitrix\Pull\Push\Message;
 
class GoogleMessage extends BaseMessage
{
    const DEFAULT_PAYLOAD_MAXIMUM_SIZE = 4096;
    public function __construct($sDeviceToken = null)
    {
        if (isset($sDeviceToken))
        {
            $this->addRecipient($sDeviceToken);
        }
    }
 
    public function getBatch()
    {
        $data = $this->getPayload();
        $batch = "Content-type: application/json\r\n";
        $batch .= "Content-length: " . strlen($data) . "\r\n";
        $batch .= "\r\n";
        $batch .= $data;
 
        return base64_encode($batch);
    }
 
    public function getPayload(): string
    {
        $data = [
            "data" => [
                'contentTitle' => $this->title,
                "contentText" => $this->text,
                "badge" => $this->badge,
                "messageParams" => $this->customProperties,
                "category" => $this->getCategory(),
                "sound" => $this->getSound(),
            ],
            "time_to_live" => $this->expiryValue,
            "priority" => "high",
            "registration_ids" => $this->deviceTokens
        ];
 
        return $this->strippedPayload($data);
    }
 
    public function strippedPayload($data): string {
        $jsonPayload = json_encode($data, JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_UNESCAPED_UNICODE);
        $payloadLength = strlen($jsonPayload);
        if ($payloadLength > self::DEFAULT_PAYLOAD_MAXIMUM_SIZE)
        {
            $text = $this->text;
            $useSenderText = false;
            if(array_key_exists("senderMessage", $this->customProperties))
            {
                $useSenderText = true;
                $text = $this->customProperties["senderMessage"];
            }
            $maxTextLength = $nTextLen = strlen($text) - ($payloadLength - self::DEFAULT_PAYLOAD_MAXIMUM_SIZE);
            if ($maxTextLength <= 0)
            {
                return false;
            }
            while (strlen($text = mb_substr($text, 0, --$nTextLen)) > $maxTextLength) ;
            if($useSenderText)
            {
                $this->setCustomProperty("senderMessage", $text);
            }
            else
            {
                $this->setText($text);
            }
 
 
            return $this->getPayload();
        }
 
        return $jsonPayload;
    }
 
}