app-functions.php

<?php
//app functions needed by app calls, depend on integration

//For more advanced implementations see WordPress plugin and its php source code:
//https://wordpress.org/plugins/ppv-live-webcams/
//https://plugins.svn.wordpress.org/ppv-live-webcams/trunk/inc/h5videochat.php


//demo setup saves variables in plain files in uploads folder: integration should use framework database

		function varSave($path, $var)
		{
			if (!file_exists('uploads')) mkdir('uploads');
			file_put_contents('uploads/' . $path, serialize($var));
		}

		function varLoad($path)
		{
			if (!file_exists('uploads/' . $path)) return false;

			return unserialize(file_get_contents('uploads/' . $path));
		}

		function arrayLoad($path)
		{
			$res = varLoad($path);

			if (is_array($res)) return $res;
			else return array();
		}

// app parameter functions

	function __(  $text,  $domain = 'default' )
	{
		return 	$text;
	}

		 function path2url($file)
		{
			$url = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
			return dirname($url) . '/' . str_replace( dirname(__FILE__) , '', $file);
		}

	 function appFail($message = 'Request Failed', $response = null)
	{
		//bad request: fail

		if (!$response) $response = array();

		$response['error'] = $message;

		$response['VideoWhisper'] = 'https://videowhisper.com';

		echo json_encode($response);

		die();
	}


	 function appSfx()
	{
		//sound effects sources

		$base = VW_H5V_URL. 'sounds/';


		return array(
		'message' => $base . 'message.mp3',
		'hello' => $base . 'hello.mp3',
		'leave' => $base . 'leave.mp3',
		'call' => $base . 'call.mp3',
		'warning' => $base . 'warning.mp3',
		'error' => $base . 'error.mp3',
		'buzz' => $base . 'buzz.mp3',
		);
	}

	function appText()
	{
		//implement translations

		//returns texts
			return array(
			'Send' => __('Send', 'ppv-live-webcams'),
			'Type your message' => __('Type your message', 'ppv-live-webcams'),

			'Chat' => __('Chat', 'ppv-live-webcams'),
			'Camera' => __('Camera', 'ppv-live-webcams'),
			'Users' => __('Users', 'ppv-live-webcams'),
			'Options' => __('Options', 'ppv-live-webcams'),
			'Files' => __('Files', 'ppv-live-webcams'),
			'Presentation' => __('Presentation', 'ppv-live-webcams'),

			'Tap for Sound' => __('Tap for Sound', 'ppv-live-webcams'),
			'Enable Audio' => __('Enable Audio', 'ppv-live-webcams'),
			'Mute' => __('Mute', 'ppv-live-webcams'),
			'Reload' => __('Reload', 'ppv-live-webcams'),

			'Broadcast' => __('Broadcast', 'ppv-live-webcams'),
			'Stop Broadcast' => __('Stop Broadcast', 'ppv-live-webcams'),
			'Make a selection to start!' => __('Make a selection to start!', 'ppv-live-webcams'),

			'Lights On' => __('Lights On', 'ppv-live-webcams'),
			'Dark Mode' => __('Dark Mode', 'ppv-live-webcams'),
			'Enter Fullscreen' => __('Enter Fullscreen', 'ppv-live-webcams'),
			'Exit Fullscreen' => __('Exit Fullscreen', 'ppv-live-webcams'),

			'Site Menu' => __('Site Menu', 'ppv-live-webcams'),

			'Request Private' => __('Request Private', 'ppv-live-webcams'),
			'Request Private 2 Way Videochat Show' => __('Request Private 2 Way Videochat Show', 'ppv-live-webcams'),
			'Performer Disabled Private Requests' => __('Performer Disabled Private Requests', 'ppv-live-webcams'),
			'Performer is Busy in Private' => __('Performer is Busy in Private', 'ppv-live-webcams'),
			'Performer is Not Online' => __('Performer is Not Online', 'ppv-live-webcams'),
			'Nevermind' => __('Nevermind', 'ppv-live-webcams'),
			'Accept' => __('Accept', 'ppv-live-webcams'),
			'Decline' => __('Decline', 'ppv-live-webcams'),
			'Close Private' => __('Close Private', 'ppv-live-webcams'),

			'Next' => __('Next', 'ppv-live-webcams'),
			'Next: Random Videochat Room' => __('Next: Random Videochat Room', 'ppv-live-webcams'),

			'Name' => __('Name', 'ppv-live-webcams'),
			'Size' => __('Size', 'ppv-live-webcams'),
			'Age' => __('Age', 'ppv-live-webcams'),
			'Upload: Drag and drop files here, or click to select files' =>  __('Upload: Drag and drop files here, or click to select files', 'ppv-live-webcams'),
			'Uploading. Please wait...' =>  __('Uploading. Please wait...', 'ppv-live-webcams'),
			'Open' => __('Open', 'ppv-live-webcams'),
			'Delete' => __('Delete', 'ppv-live-webcams'),

			'Media Displayed' => __('Media Displayed', 'ppv-live-webcams'),
			'Remove' => __('Remove', 'ppv-live-webcams'),
			'Default' => __('Default', 'ppv-live-webcams'),
			'Empty' => __('Empty', 'ppv-live-webcams'),

			'Profile' => __('Profile', 'ppv-live-webcams'),
			'Show' => __('Show', 'ppv-live-webcams'),

			'Private Call' => __('Private Call', 'ppv-live-webcams'),
			'Exit' => __('Exit', 'ppv-live-webcams'),

			'External Broadcast' => __('External Broadcast', 'ppv-live-webcams'),
			'Broadcast with external apps for advanced compositions, scenes, effects or reliability compared to web based interface and protocols. External broadcasts have higher latency and improved capacity, reliability specific to HLS delivery method. New broadcasts show in about 10 seconds and unavailability updates after 1 minute.' => __('Broadcast with external apps for advanced compositions, scenes, effects or reliability compared to web based interface and protocols. External broadcasts have higher latency and improved capacity, reliability specific to HLS delivery method. New broadcasts show in about 10 seconds and unavailability updates after 1 minute.', 'ppv-live-webcams'),
		);
	}


function appRoomUsers($roomID, $options)
	{

		$sessions = arrayLoad($roomID . '_sessions');

		foreach ($sessions as $key => $session)
			{
				if (!isset($session['meta']) || !is_array( $userMeta = unserialize($session['meta']) ) ) $userMeta = array();

				$item = [];
				$item['userID'] = intval($session['uid']);
				$item['userName'] = $session['username'] ?? '';
				if (!$item['userName']) $item['userName'] = '#' . $session['uid'];

				$item['sdate'] = intval($session['sdate']);
				$item['meta'] = $userMeta;
				$item['updated'] = intval($session['edate']);
				$item['avatar'] =  VW_H5V_URL .'images/avatar.png';
				$item['url'] = 'https://videowhisper.com/tickets_submit.php';

				$items[intval($session['uid'])] = $item;
			}

			return $items;
	}


 function appTipOptions($options)
	{

		$tipOptions = stripslashes($options['tipOptions']);
		if ($tipOptions)
		{
			$p = xml_parser_create();
			xml_parse_into_struct($p, trim($tipOptions), $vals, $index);
			$error = xml_get_error_code($p);
			xml_parser_free($p);

			if (is_array($vals)) return $vals;
		}

		return array();

	}


function appStream($userID, $roomID, $options)
{
	$key = $options['webKey'] . $roomID; //a secret key to implement stream verification

	return 'stream' . $userID . '?channel_id=' . $roomID . '&userID=' . urlencode($userID) . '&key=' . urlencode($key) . '&ip=' . urlencode($_SERVER['REMOTE_ADDR']) . '&transcoding=0&room=Room' . $roomID. '&privateUID=0';

}

function appPublicRoom($roomID, $userID, $options, $welcome ='')
{
	//public room parameters, specific for this user
	//depends on integration

	$room = array();

	$room['ID'] = $roomID;
	$room['name'] = 'Room' . $roomID;

	$room['performer'] = 'Performer' . (10000+$roomID);
	$room['performerID'] = (10000+$roomID);

	$collaboration = $options['collaboration'];
	if (VW_DEVMODE && VW_DEVMODE_COLLABORATION) $collaboration = true;

	$isPerformer = ($userID == (10000+$roomID));

	//screen
	if ($isPerformer) $roomScreen = 'BroadcastScreen';
	else $roomScreen = 'PlaybackScreen';
	if ($collaboration) $roomScreen = 'CollaborationScreen';
	$room['screen'] = $roomScreen;

	$room['streamBroadcast'] = appStream($userID, $roomID, $options);

	$room['streamUID'] = intval($room['performerID']);
	$room['streamPlayback'] = appStream($room['performerID'], $roomID, $options);

	//$room['actionPrivate'] = !$isPerformer;
	$room['actionPrivateClose'] = false;
	$room['privateUID'] = 0;

	$room['actionID'] = 0;

	$room['welcome'] = ' 💬 ' . sprintf('Welcome to public room "%s", user #%s!', $room['name'] , $userID);
	$room['welcomeImage'] = VW_H5V_URL . 'images/chat.png';



	if ($isPerformer) //member: performer
		{
		$room['welcome'] .= "\n 📡 ". 'You are broadcaster (room owner/performer). Use best network available if you have the option: 5GHz on WiFi instead of 2.4 GHz, LTE/4G on mobile instead of 3G, wired instead of wireless. ';
	}
	else //member: client
		{
		$room['welcome'] .= "\n 👤 ".'You are invited participant.';
		}




	//if ($options['videochatNext']) if (!$isPerformer) $room['next'] = true;

			if ($welcome) $room['welcome'] .= "\n" . $welcome;

			//configure tipping options for clients
			$room['tips'] = false;
		if ($options['tips'])
			if (!$isPerformer)
			{
				$tipOptions = appTipOptions($options);
				if (count($tipOptions))
				{
					$room['tipOptions'] = $tipOptions;
					$room['tips'] = true;
					$room['tipsURL'] = VW_H5V_URL . 'tips/';
				}
			}

			//demo goal
			$room['welcome'] .= "\n 🎁 " . 'Current gifts goal' .': '. 'Demo Goal';
			$room['welcome'] .= "\n - " . 'Goal description' .': ' . 'Chat can display goals that can be achieved with gifts/donations.';
			$room['welcomeProgressValue'] = 8;
			$room['welcomeProgressTotal'] = 10;
			$room['welcomeProgressDetails'] =  'Demo Goal';

		//offline snapshot (poster) and video
		$room['snapshot'] = VW_H5V_URL . 'images/no-picture.png';
		$room['videoOffline'] = VW_H5V_URL . 'videos/hamsterad.mp4';;

		return $room;
}