<?php

/**
 * Zot endpoint
 */


require_once('include/zot.php');
	
function post_post(&$a) {

	logger('mod_zot: ' . print_r($_REQUEST,true), LOGGER_DEBUG);

	$ret = array('result' => false);

	if(array_key_exists('iv',$_REQUEST)) {
		// hush-hush ultra top secret mode
		$data = json_decode(aes_unencapsulate($_REQUEST['data'],get_config('system','site_prvkey')),true);
	}
	else {
		$data = json_decode($_REQUEST['data'],true);
	}


	$msgtype = ((array_key_exists('type',$data)) ? $data['type'] : '');

	if(array_key_exists('sender',$data)) {
		$sender = $data['sender'];
	}	

	$hub = zot_gethub($sender);
	if(! $hub) {
		// (!!) this will validate the sender
		$result = zot_register_hub($sender);
		if((! $result['success']) || (! zot_gethub($sender))) {
			$ret['message'] = 'Hub not available.';
			logger('mod_zot: no hub');
			json_return_and_die($ret);
		}
	}

	// TODO: check which hub is primary and take action if mismatched

	if(array_key_exists('recipients',$data))
		$recipients = $data['recipients'];

	if($msgtype === 'refresh') {

		// remote channel info (such as permissions or photo or something)
		// has been updated. Grab a fresh copy and sync it.

		if($recipients) {

			// This would be a permissions update, typically for one connection

			foreach($recipients as $recip) {	
				$r = q("select channel.*,xchan.* from channel 
					left join xchan on channel_hash = xchan_hash
					where channel_guid = '%s' and channel_guid_sig = '%s' limit 1",
					dbesc($recip['guid']),
					dbesc($recip['guid_sig'])
				);

				$x = zot_refresh(array(
						'xchan_guid'     => $sender['guid'], 
						'xchan_guid_sig' => $sender['guid_sig'],
						'hubloc_url'     => $sender['url']
				),$r[0]);
			}
		}
		else {

			// system wide refresh
				
			$x = zot_refresh(array(
				'xchan_guid'     => $sender['guid'], 
				'xchan_guid_sig' => $sender['guid_sig'],
				'hubloc_url'     => $sender['url']
			),null);
		}
		$ret['result'] = true;
		json_return_and_die($ret);
	}

	if($msgtype === 'notify') {
		// add to receive queue
		// qreceive_add($data);

		$ret['result'] = true;
		json_return_and_die($ret);

	}

}