Add smart_flatten_conversation function
- Fix doc - Fix formatting - Update conv_sort with smart threading
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Hypolite Petovan
parent
dc06b851f5
commit
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@ -1361,13 +1361,20 @@ function status_editor(App $a, $x, $notes_cid = 0, $popup = false) {
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return $o;
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}
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function get_item_children($arr, $parent) {
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$children = array();
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$a = get_app();
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foreach ($arr as $item) {
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/**
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* Returns all the children in the given item list of the given parent. If threading
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* is allowed, does it recursively.
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*
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* @param array $item_list
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* @param array $parent
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* @return type
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*/
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function get_item_children(array $item_list, array $parent, $recursive = true)
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{
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$children = [];
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foreach ($item_list as $item) {
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if ($item['id'] != $item['parent']) {
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if (Config::get('system', 'thread_allow') && $a->theme_thread_allow) {
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if ($recursive) {
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// Fallback to parent-uri if thr-parent is not set
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$thr_parent = $item['thr-parent'];
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if ($thr_parent == '') {
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@ -1375,7 +1382,7 @@ function get_item_children($arr, $parent) {
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}
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if ($thr_parent == $parent['uri']) {
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$item['children'] = get_item_children($arr, $item);
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$item['children'] = get_item_children($item_list, $item);
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$children[] = $item;
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}
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} elseif ($item['parent'] == $parent['id']) {
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@ -1386,54 +1393,124 @@ function get_item_children($arr, $parent) {
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return $children;
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}
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/// @TODO Add type-hint
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function sort_item_children($items) {
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/**
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* Recursively sorts a tree-like item array
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*
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* @param array $items
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* @return array
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*/
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function sort_item_children(array $items)
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{
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$result = $items;
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usort($result, 'sort_thr_created_rev');
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foreach ($result as $k => $i) {
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if (count($result[$k]['children'])) {
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if (isset($result[$k]['children'])) {
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$result[$k]['children'] = sort_item_children($result[$k]['children']);
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}
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}
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return $result;
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}
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/// @TODO Add type-hint
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function add_children_to_list($children, &$arr) {
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foreach ($children as $y) {
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$arr[] = $y;
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if (count($y['children'])) {
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add_children_to_list($y['children'], $arr);
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}
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}
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}
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/// @TODO Add type-hint
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function conv_sort($arr, $order) {
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if ((!(is_array($arr) && count($arr)))) {
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return array();
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}
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$parents = array();
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$children = array();
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$newarr = array();
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/*
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* This is a preparation for having two different items with the same uri in one thread
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* This will otherwise lead to an endless loop.
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/**
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* Recursively add all children items at the top level of a list
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*
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* @param array $children List of items to append
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* @param array $item_list
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*/
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foreach ($arr as $x) {
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if (!isset($newarr[$x['uri']])) {
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$newarr[$x['uri']] = $x;
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function add_children_to_list(array $children, array &$item_list)
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{
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foreach ($children as $child) {
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$item_list[] = $child;
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if (isset($child['children'])) {
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add_children_to_list($child['children'], $item_list);
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}
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}
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}
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$arr = $newarr;
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/**
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* This recursive function takes the item tree structure created by conv_sort() and
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* flatten the extraneous depth levels when people reply sequentially, removing the
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* stairs effect in threaded conversations limiting the available content width.
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*
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* The basic principle is the following: if a post item has only one reply and is
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* the last reply of its parent, then the reply is moved to the parent.
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*
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* This process is rendered somewhat more complicated because items can be either
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* replies or likes, and these don't factor at all in the reply count/last reply.
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*
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* @param array $parent A tree-like array of items
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* @return array
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*/
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function smart_flatten_conversation(array $parent)
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{
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if (! isset($parent['children']) || count($parent['children']) == 0) {
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return $parent;
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}
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foreach ($arr as $x) {
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if ($x['id'] == $x['parent']) {
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$parents[] = $x;
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// We use a for loop to ensure we process the newly-moved items
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for ($i = 0; $i < count($parent['children']); $i++) {
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$child = $parent['children'][$i];
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if (isset($child['children']) && count($child['children'])) {
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// This helps counting only the regular posts
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$count_post_closure = function($var) {
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return $var['verb'] === 'http://activitystrea.ms/schema/1.0/post';
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};
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$child_post_count = count(array_filter($child['children'], $count_post_closure));
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$remaining_post_count = count(array_filter(array_slice($parent['children'], $i), $count_post_closure));
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// If there's only one child's children post and this is the last child post
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if ($child_post_count == 1 && $remaining_post_count == 1) {
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// Searches the post item in the children
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$j = 0;
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while($child['children'][$j]['verb'] !== 'http://activitystrea.ms/schema/1.0/post' && $j < count($child['children'])) {
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$j ++;
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}
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$moved_item = $child['children'][$j];
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unset($parent['children'][$i]['children'][$j]);
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$parent['children'][] = $moved_item;
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} else {
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$parent['children'][$i] = smart_flatten_conversation($child);
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}
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}
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}
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return $parent;
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}
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/**
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* Expands a flat list of items into corresponding tree-like conversation structures,
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* sort the top-level posts either on "created" or "commented", and finally
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* append all the items at the top level (???)
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*
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* @param array $item_list A list of items belonging to one or more conversations
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* @param string $order Either on "created" or "commented"
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* @return array
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*/
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function conv_sort(array $item_list, $order)
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{
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$parents = [];
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if (!(is_array($item_list) && count($item_list))) {
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return $parents;
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}
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$item_array = [];
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// Dedupes the item list on the uri to prevent infinite loops
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foreach ($item_list as $item) {
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$item_array[$item['uri']] = $item;
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}
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// Extract the top level items
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foreach ($item_array as $item) {
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if ($item['id'] == $item['parent']) {
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$parents[] = $item;
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}
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}
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@ -1443,73 +1520,69 @@ function conv_sort($arr, $order) {
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usort($parents, 'sort_thr_commented');
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}
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if (count($parents)) {
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foreach ($parents as $i => $_x) {
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$parents[$i]['children'] = get_item_children($arr, $_x);
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$thread_allowed = Config::get('system', 'thread_allow') && get_app()->theme_thread_allow;
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foreach ($parents as $i => $parent) {
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$parents[$i]['children'] = get_item_children($item_array, $parent, $thread_allowed);
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}
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foreach ($parents as $i => $parent) {
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$parents[$i]['children'] = sort_item_children($parents[$i]['children']);
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}
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if ($thread_allowed && PConfig::get(local_user(), 'system', 'smart_threading', 0)) {
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foreach ($parents as $i => $parent) {
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$parents[$i] = smart_flatten_conversation($parent);
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}
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}
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/// @TODO Old-lost code?
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/*foreach ($arr as $x) {
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if ($x['id'] != $x['parent']) {
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$p = find_thread_parent_index($parents,$x);
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if ($p !== false)
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$parents[$p]['children'][] = $x;
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}
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}*/
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if (count($parents)) {
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foreach ($parents as $k => $v) {
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if (count($parents[$k]['children'])) {
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$parents[$k]['children'] = sort_item_children($parents[$k]['children']);
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/// @TODO Old-lost code?
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/*$y = $parents[$k]['children'];
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usort($y,'sort_thr_created_rev');
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$parents[$k]['children'] = $y;*/
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}
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/// @TODO: Stop recusrsively adding all children back to the top level (!!!)
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/// However, this apparently ensures responses (likes, attendance) display (?!)
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foreach ($parents as $parent) {
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if (count($parent['children'])) {
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add_children_to_list($parent['children'], $parents);
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}
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}
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$ret = array();
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if (count($parents)) {
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foreach ($parents as $x) {
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$ret[] = $x;
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if (count($x['children'])) {
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add_children_to_list($x['children'], $ret);
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/// @TODO Old-lost code?
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/*foreach ($x['children'] as $y)
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$ret[] = $y;*/
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}
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}
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return $parents;
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}
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return $ret;
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}
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/// @TODO Add type-hint
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function sort_thr_created($a, $b) {
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/**
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* usort() callback to sort item arrays by the created key
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*
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* @param array $a
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* @param array $b
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* @return int
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*/
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function sort_thr_created(array $a, array $b)
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{
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return strcmp($b['created'], $a['created']);
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}
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/// @TODO Add type-hint
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function sort_thr_created_rev($a, $b) {
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/**
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* usort() callback to reverse sort item arrays by the created key
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*
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* @param array $a
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* @param array $b
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* @return int
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*/
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function sort_thr_created_rev(array $a, array $b)
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{
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return strcmp($a['created'], $b['created']);
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}
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/// @TODO Add type-hint
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function sort_thr_commented($a, $b) {
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/**
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* usort() callback to sort item arrays by the commented key
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*
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* @param array $a
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* @param array $b
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* @return type
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*/
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function sort_thr_commented(array $a, array $b)
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{
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return strcmp($b['commented'], $a['commented']);
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}
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/// @TODO Add type-hint
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function find_thread_parent_index($arr, $x) {
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foreach ($arr as $k => $v) {
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if ($v['id'] == $x['parent']) {
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return $k;
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}
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}
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return false;
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}
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/// @TODO Add type-hint
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function render_location_dummy($item) {
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if ($item['location'] != "") {
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