/**
* @param SlackMessage $slackMessage
* @return string
* @throws \InvalidArgumentException
*/
private function buildPostBody(SlackMessage $slackMessage) : string
{
if (!$slackMessage->getText()) {
throw new \InvalidArgumentException('Message can\'t be empty');
}
if (!$slackMessage->getIcon()) {
$return['icon_url'] = $this->config['default_icon'];
} else {
$return['icon_url'] = $slackMessage->getIcon();
}
if (!$slackMessage->getRecipient()) {
$return['channel'] = $this->config['default_channel'];
} else {
$return['channel'] = $slackMessage->getRecipient();
}
if (!$slackMessage->getSender()) {
$return['username'] = '******';
} else {
$return['username'] = $slackMessage->getSender();
}
$return['text'] = $slackMessage->getText();
$return['mrkdwn'] = true;
if ($slackMessage->isShowQuote()) {
$return['attachments'] = ['fallback' => $slackMessage->getText(), 'pretext' => $slackMessage->getText(), 'fields' => ['title' => !$slackMessage->getQuoteTitle() ? '' : $slackMessage->getQuoteTitle(), 'title_link' => !$slackMessage->getQuoteTitleLink() ? '' : $slackMessage->getQuoteTitleLink(), 'text' => !$slackMessage->getQuoteText() ? '' : $slackMessage->getQuoteText(), 'color' => $this->quoteTypeColor($slackMessage->getQuoteType()), 'mrkdwn_in' => ['text', 'pretext']]];
}
return json_encode($return, JSON_UNESCAPED_UNICODE);
}