/**
* @param UUID[] $missing
* @return PostRevision
*/
protected function createFakePosts(array $missing)
{
$parents = $this->treeRepository->fetchParentMap($missing);
$posts = array();
foreach ($missing as $uuid) {
$alpha = $uuid->getAlphadecimal();
if (!isset($parents[$alpha])) {
wfDebugLog('Flow', __METHOD__ . ": Unable not locate parent for postid {$alpha}");
continue;
}
$content = wfMessage('flow-stub-post-content')->text();
$username = wfMessage('flow-system-usertext')->text();
$user = User::newFromName($username);
// create a stub post instead of failing completely
$post = PostRevision::newFromId($uuid, $user, $content, 'wikitext');
$post->setReplyToId($parents[$alpha]);
$posts[$alpha] = $post;
}
return $posts;
}
/**
* @param UUID[] $topicIds
* @return PostRevision[]
* @throws InvalidDataException
*/
public function getMulti(array $topicIds)
{
if (!$topicIds) {
return array();
}
// load posts for all located post ids
$allPostIds = $this->fetchRelatedPostIds($topicIds);
$queries = array();
foreach ($allPostIds as $postId) {
$queries[] = array('rev_type_id' => $postId);
}
$found = $this->storage->findMulti('PostRevision', $queries, array('sort' => 'rev_id', 'order' => 'DESC', 'limit' => 1));
/** @var PostRevision[] $posts */
$posts = $children = array();
foreach ($found as $indexResult) {
$post = reset($indexResult);
// limit => 1 means only 1 result per query
if (isset($posts[$post->getPostId()->getAlphadecimal()])) {
throw new InvalidDataException('Multiple results for id: ' . $post->getPostId()->getAlphadecimal(), 'fail-load-data');
}
$posts[$post->getPostId()->getAlphadecimal()] = $post;
}
$prettyPostIds = array();
foreach ($allPostIds as $id) {
$prettyPostIds[] = $id->getAlphadecimal();
}
$missing = array_diff($prettyPostIds, array_keys($posts));
if ($missing) {
// convert string uuid's into UUID objects
/** @var UUID[] $missingUUID */
$missingUUID = array_map(array('Flow\\Model\\UUID', 'create'), $missing);
// we'll need to know parents to add stub post correctly in post hierarchy
$parents = $this->treeRepo->fetchParentMap($missingUUID);
$missingParents = array_diff($missing, array_keys($parents));
if ($missingParents) {
// if we can't fetch a post's original position in the tree
// hierarchy, we can't create a stub post to display, so bail
throw new InvalidDataException('Missing Posts & parents: ' . json_encode($missingParents), 'fail-load-data');
}
foreach ($missingUUID as $postId) {
$content = wfMessage('flow-stub-post-content')->text();
$username = wfMessage('flow-system-usertext')->text();
$user = \User::newFromName($username);
// create a stub post instead of failing completely
$post = PostRevision::newFromId($postId, $user, $content, 'wikitext');
$post->setReplyToId($parents[$postId->getAlphadecimal()]);
$posts[$postId->getAlphadecimal()] = $post;
wfWarn('Missing Posts: ' . FormatJson::encode($missing));
}
}
// another helper to catch bugs in dev
$extra = array_diff(array_keys($posts), $prettyPostIds);
if ($extra) {
throw new InvalidDataException('Found unrequested posts: ' . FormatJson::encode($extra), 'fail-load-data');
}
// populate array of children
foreach ($posts as $post) {
if ($post->getReplyToId()) {
$children[$post->getReplyToId()->getAlphadecimal()][$post->getPostId()->getAlphadecimal()] = $post;
}
}
$extraParents = array_diff(array_keys($children), $prettyPostIds);
if ($extraParents) {
throw new InvalidDataException('Found posts with unrequested parents: ' . FormatJson::encode($extraParents), 'fail-load-data');
}
foreach ($posts as $postId => $post) {
$postChildren = array();
$postDepth = 0;
// link parents to their children
if (isset($children[$postId])) {
// sort children with oldest items first
ksort($children[$postId]);
$postChildren = $children[$postId];
}
// determine threading depth of post
$replyToId = $post->getReplyToId();
while ($replyToId && isset($children[$replyToId->getAlphadecimal()])) {
$postDepth++;
$replyToId = $posts[$replyToId->getAlphadecimal()]->getReplyToId();
}
$post->setChildren($postChildren);
$post->setDepth($postDepth);
}
// return only the requested posts, rest are available as children.
// Return in same order as requested
/** @var PostRevision[] $roots */
$roots = array();
foreach ($topicIds as $id) {
$roots[$id->getAlphadecimal()] = $posts[$id->getAlphadecimal()];
}
// Attach every post in the tree to its root. setRootPost
// recursively applies it to all children as well.
foreach ($roots as $post) {
$post->setRootPost($post);
}
return $roots;
}
