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phorge/src/applications/notification/builder/PhabricatorNotificationBuilder.php
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PhabricatorNotificationBuilder.php
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<?php
final class PhabricatorNotificationBuilder extends Phobject {
private $stories;
private $parsedStories;
private $user = null;
private $showTimestamps = true;
public function __construct(array $stories) {
assert_instances_of($stories, 'PhabricatorFeedStory');
$this->stories = $stories;
}
public function setUser($user) {
$this->user = $user;
return $this;
}
public function setShowTimestamps($show_timestamps) {
$this->showTimestamps = $show_timestamps;
return $this;
}
public function getShowTimestamps() {
return $this->showTimestamps;
}
private function parseStories() {
if ($this->parsedStories) {
return $this->parsedStories;
}
$stories = $this->stories;
$stories = mpull($stories, null, 'getChronologicalKey');
// Aggregate notifications. Generally, we can aggregate notifications only
// by object, e.g. "a updated T123" and "b updated T123" can become
// "a and b updated T123", but we can't combine "a updated T123" and
// "a updated T234" into "a updated T123 and T234" because there would be
// nowhere sensible for the notification to link to, and no reasonable way
// to unambiguously clear it.
// Build up a map of all the possible aggregations.
$chronokey_map = array();
$aggregation_map = array();
$agg_types = array();
foreach ($stories as $chronokey => $story) {
$chronokey_map[$chronokey] = $story->getNotificationAggregations();
foreach ($chronokey_map[$chronokey] as $key => $type) {
$agg_types[$key] = $type;
$aggregation_map[$key]['keys'][$chronokey] = true;
}
}
// Repeatedly select the largest available aggregation until none remain.
$aggregated_stories = array();
while ($aggregation_map) {
// Count the size of each aggregation, removing any which will consume
// fewer than 2 stories.
foreach ($aggregation_map as $key => $dict) {
$size = count($dict['keys']);
if ($size > 1) {
$aggregation_map[$key]['size'] = $size;
} else {
unset($aggregation_map[$key]);
}
}
// If we're out of aggregations, break out.
if (!$aggregation_map) {
break;
}
// Select the aggregation we're going to make, and remove it from the
// map.
$aggregation_map = isort($aggregation_map, 'size');
$agg_info = idx(last($aggregation_map), 'keys');
$agg_key = last_key($aggregation_map);
unset($aggregation_map[$agg_key]);
// Select all the stories it aggregates, and remove them from the master
// list of stories and from all other possible aggregations.
$sub_stories = array();
foreach ($agg_info as $chronokey => $ignored) {
$sub_stories[$chronokey] = $stories[$chronokey];
unset($stories[$chronokey]);
foreach ($chronokey_map[$chronokey] as $key => $type) {
unset($aggregation_map[$key]['keys'][$chronokey]);
}
unset($chronokey_map[$chronokey]);
}
// Build the aggregate story.
krsort($sub_stories);
$story_class = $agg_types[$agg_key];
$conv = array(head($sub_stories)->getStoryData());
$new_story = newv($story_class, $conv);
$new_story->setAggregateStories($sub_stories);
$aggregated_stories[] = $new_story;
}
// Combine the aggregate stories back into the list of stories.
$stories = array_merge($stories, $aggregated_stories);
$stories = mpull($stories, null, 'getChronologicalKey');
krsort($stories);
$this->parsedStories = $stories;
return $stories;
}
public function buildView() {
$stories = $this->parseStories();
$null_view = new AphrontNullView();
foreach ($stories as $story) {
try {
$view = $story->renderView();
} catch (Exception $ex) {
// TODO: Render a nice debuggable notice instead?
continue;
}
$view->setShowTimestamp($this->getShowTimestamps());
$null_view->appendChild($view->renderNotification($this->user));
}
return $null_view;
}
public function buildDict() {
$stories = $this->parseStories();
$dict = array();
$viewer = $this->user;
$key = PhabricatorNotificationsSetting::SETTINGKEY;
$setting = $viewer->getUserSetting($key);
$desktop_ready = PhabricatorNotificationsSetting::desktopReady($setting);
$web_ready = PhabricatorNotificationsSetting::webReady($setting);
foreach ($stories as $story) {
if ($story instanceof PhabricatorApplicationTransactionFeedStory) {
$dict[] = array(
'showAnyNotification' => $web_ready,
'showDesktopNotification' => $desktop_ready,
'title' => $story->renderText(),
'body' => $story->renderTextBody(),
'href' => $story->getURI(),
'icon' => $story->getImageURI(),
);
} else {
$dict[] = array(
'showWebNotification' => false,
'showDesktopNotification' => false,
'title' => null,
'body' => null,
'href' => null,
'icon' => null,
);
}
}
return $dict;
}
}

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