function makeNetworkFromIds($depth)
{
global $apikey, $nodes, $edges, $ids, $crawldepth;
echo "<br /><br />getting details for " . count($ids) . " videos at depth " . $depth . ": ";
$newids = array();
$categoryIds = array();
for ($i = 0; $i < count($ids); $i++) {
$vid = $ids[$i];
$restquery = "https://www.googleapis.com/youtube/v3/videos?part=statistics,contentDetails,snippet&id=" . $vid . "&key=" . $apikey;
$reply = doAPIRequest($restquery);
if (isset($reply->items[0])) {
$video = $reply->items[0];
// collect categories
if (!in_array($video->snippet->categoryId, $categoryIds)) {
$categoryIds[] = $video->snippet->categoryId;
}
$row = array();
$row["channelId"] = $video->snippet->channelId;
$row["channelTitle"] = preg_replace("/\\s+/", " ", $video->snippet->channelTitle);
$row["videoId"] = $video->id;
$row["publishedAt"] = strtotime($video->snippet->publishedAt);
$row["videoTitle"] = preg_replace("/\\s+/", " ", $video->snippet->title);
$row["videoDescription"] = preg_replace("/\\s+/", " ", $video->snippet->description);
$row["videoCategoryId"] = $video->snippet->categoryId;
$row["videoCategoryLabel"] = "";
$row["duration"] = $video->contentDetails->duration;
$row["dimension"] = $video->contentDetails->dimension;
$row["definition"] = $video->contentDetails->definition;
$row["caption"] = $video->contentDetails->caption;
$row["licensedContent"] = $video->contentDetails->licensedContent;
$row["viewCount"] = $video->statistics->viewCount;
$row["likeCount"] = $video->statistics->likeCount;
$row["dislikeCount"] = $video->statistics->dislikeCount;
$row["favoriteCount"] = $video->statistics->favoriteCount;
$row["commentCount"] = $video->statistics->commentCount;
$nodes[$vid] = $row;
if ($depth == 0) {
$nodes[$vid]["isSeed"] = "yes";
$nodes[$vid]["seedRank"] = $i + 1;
} else {
$nodes[$vid]["isSeed"] = "no";
$nodes[$vid]["seedRank"] = "";
}
}
echo $i . " ";
flush();
ob_flush();
}
// get category labels and assign to videos
$restquery = "https://www.googleapis.com/youtube/v3/videoCategories?part=snippet&id=" . urlencode(implode(",", $categoryIds)) . "&key=" . $apikey;
$reply = doAPIRequest($restquery);
$categoryTrans = array();
foreach ($reply->items as $cat) {
$categoryTrans[$cat->id] = $cat->snippet->title;
}
foreach ($nodes as $key => $node) {
$nodes[$key]["videoCategoryLabel"] = $categoryTrans[$node["videoCategoryId"]];
}
echo "<br />getting related videos for " . count($ids) . " videos at depth " . $depth . ": ";
for ($i = 0; $i < count($ids); $i++) {
$vid = $ids[$i];
// get related videos
$run = true;
$nextpagetoken = null;
while ($run == true) {
$restquery = "https://www.googleapis.com/youtube/v3/search?part=id&maxResults=50&relatedToVideoId=" . $vid . "&type=video&key=" . $apikey;
if ($nextpagetoken != null) {
$restquery .= "&pageToken=" . $nextpagetoken;
}
$reply = doAPIRequest($restquery);
foreach ($reply->items as $item) {
$featid = $item->id->videoId;
if (!isset($nodes[$featid])) {
if (!in_array($featid, $newids)) {
$newids[] = $featid;
}
if ($depth < $crawldepth) {
$edgeid = $vid . "_|_|X|_|_" . $featid;
$edges[$edgeid] = true;
}
} else {
$edgeid = $vid . "_|_|X|_|_" . $featid;
$edges[$edgeid] = true;
}
}
if (isset($reply->nextPageToken) && $reply->nextPageToken != "") {
$nextpagetoken = $reply->nextPageToken;
} else {
$run = false;
}
}
echo $i . " ";
flush();
ob_flush();
}
if ($depth == $crawldepth) {
//print_r($nodes); exit;
renderNetwork();
} else {
//print_r($newids);
$ids = $newids;
$depth++;
makeNetworkFromIds($depth);
}
}
function makeNetworkFromIds($depth)
{
global $apikey, $nodes, $edges, $ids, $crawldepth, $subscriptions;
echo "<br /><br />getting details for " . count($ids) . " channels at depth " . $depth . ": ";
$newids = array();
for ($i = 0; $i < count($ids); $i++) {
$chid = $ids[$i];
//$restquery = "https://www.googleapis.com/youtube/v3/channels?part=brandingSettings,status,id,snippet,contentDetails,contentOwnerDetails,statistics,topicDetails,invideoPromotion&id=".$chid."&key=".$apikey;
$restquery = "https://www.googleapis.com/youtube/v3/channels?part=brandingSettings,id,snippet,statistics&id=" . $chid . "&key=" . $apikey;
$reply = doAPIRequest($restquery);
//print_r($reply);
if (isset($reply->items[0])) {
$nodes[$chid] = $reply->items[0];
$nodes[$chid]->done = false;
if ($depth == 0) {
$nodes[$chid]->isSeed = "yes";
$nodes[$chid]->seedRank = $i + 1;
} else {
$nodes[$chid]->isSeed = "no";
$nodes[$chid]->seedRank = "";
}
}
echo $i . " ";
flush();
ob_flush();
}
//print_r($nodes);
if ($subscriptions == "on") {
echo "<br />getting subscriptions for " . count($ids) . " channels at depth " . $depth . ": ";
$counter = 0;
}
foreach ($nodes as $nodeid => $nodedata) {
if (isset($nodedata->brandingSettings->channel->featuredChannelsUrls)) {
foreach ($nodedata->brandingSettings->channel->featuredChannelsUrls as $featid) {
if (!isset($nodes[$featid])) {
if (!in_array($featid, $newids)) {
$newids[] = $featid;
}
if ($depth < $crawldepth) {
$edgeid = $nodeid . "_|_|X|_|_" . $featid;
$edges[$edgeid] = true;
}
} else {
$edgeid = $nodeid . "_|_|X|_|_" . $featid;
$edges[$edgeid] = true;
}
}
}
if ($subscriptions == "on" && $nodedata->done == false) {
$run = true;
$nextpagetoken = null;
echo $counter . " ";
flush();
ob_flush();
$counter++;
while ($run == true) {
$restquery = "https://www.googleapis.com/youtube/v3/subscriptions?part=snippet&channelId=" . $nodedata->id . "&maxResults=50&key=" . $apikey;
if ($nextpagetoken != null) {
$restquery .= "&pageToken=" . $nextpagetoken;
}
$reply = doAPIRequest($restquery);
//print_r($reply); exit;
foreach ($reply->items as $item) {
$featid = $item->snippet->resourceId->channelId;
//print_r($item);
if (!isset($nodes[$featid])) {
if (!in_array($featid, $newids)) {
$newids[] = $featid;
}
if ($depth < $crawldepth) {
$edgeid = $nodeid . "_|_|X|_|_" . $featid;
$edges[$edgeid] = true;
}
} else {
$edgeid = $nodeid . "_|_|X|_|_" . $featid;
$edges[$edgeid] = true;
}
}
if (isset($reply->nextPageToken) && $reply->nextPageToken != "") {
$nextpagetoken = $reply->nextPageToken;
} else {
$run = false;
}
}
$nodes[$nodeid]->done = true;
}
//print_r($newids);
}
if ($depth == $crawldepth) {
renderNetwork();
} else {
$ids = $newids;
$depth++;
makeNetworkFromIds($depth);
}
}