Calculate the interaction score

database.sql

@@ -1,6 +1,6 @@
 -- ------------------------------------------
 -- Friendica 2023.09-dev (Giant Rhubarb)
--- DB_UPDATE_VERSION 1529
+-- DB_UPDATE_VERSION 1530
 -- ------------------------------------------
 
 
@@ -513,6 +513,10 @@ CREATE TABLE IF NOT EXISTS `contact-relation` (
 	`last-interaction` datetime NOT NULL DEFAULT '0001-01-01 00:00:00' COMMENT 'Date of the last interaction',
 	`follow-updated` datetime NOT NULL DEFAULT '0001-01-01 00:00:00' COMMENT 'Date of the last update of the contact relationship',
 	`follows` boolean NOT NULL DEFAULT '0' COMMENT '',
+	`score` smallint unsigned COMMENT 'score for interactions of cid on relation-cid',
+	`relation-score` smallint unsigned COMMENT 'score for interactions of relation-cid on cid',
+	`thread-score` smallint unsigned COMMENT 'score for interactions of cid on threads of relation-cid',
+	`relation-thread-score` smallint unsigned COMMENT 'score for interactions of relation-cid on threads of cid',
 	 PRIMARY KEY(`cid`,`relation-cid`),
 	 INDEX `relation-cid` (`relation-cid`),
 	FOREIGN KEY (`cid`) REFERENCES `contact` (`id`) ON UPDATE RESTRICT ON DELETE CASCADE,

doc/database/db_contact-relation.md

@@ -6,13 +6,17 @@ Contact relations
 Fields
 ------
 
-| Field            | Description                                         | Type         | Null | Key | Default             | Extra |
+| Field                 | Description                                              | Type              | Null | Key | Default             | Extra |
-| ---------------- | --------------------------------------------------- | ------------ | ---- | --- | ------------------- | ----- |
+| --------------------- | -------------------------------------------------------- | ----------------- | ---- | --- | ------------------- | ----- |
-| cid              | contact the related contact had interacted with     | int unsigned | NO   | PRI | 0                   |       |
+| cid                   | contact the related contact had interacted with          | int unsigned      | NO   | PRI | 0                   |       |
-| relation-cid     | related contact who had interacted with the contact | int unsigned | NO   | PRI | 0                   |       |
+| relation-cid          | related contact who had interacted with the contact      | int unsigned      | NO   | PRI | 0                   |       |
-| last-interaction | Date of the last interaction                        | datetime     | NO   |     | 0001-01-01 00:00:00 |       |
+| last-interaction      | Date of the last interaction                             | datetime          | NO   |     | 0001-01-01 00:00:00 |       |
-| follow-updated   | Date of the last update of the contact relationship | datetime     | NO   |     | 0001-01-01 00:00:00 |       |
+| follow-updated        | Date of the last update of the contact relationship      | datetime          | NO   |     | 0001-01-01 00:00:00 |       |
-| follows          |                                                     | boolean      | NO   |     | 0                   |       |
+| follows               |                                                          | boolean           | NO   |     | 0                   |       |
+| score                 | score for interactions of cid on relation-cid            | smallint unsigned | YES  |     | NULL                |       |
+| relation-score        | score for interactions of relation-cid on cid            | smallint unsigned | YES  |     | NULL                |       |
+| thread-score          | score for interactions of cid on threads of relation-cid | smallint unsigned | YES  |     | NULL                |       |
+| relation-thread-score | score for interactions of relation-cid on threads of cid | smallint unsigned | YES  |     | NULL                |       |
 
 Indexes
 ------------

src/Model/Contact/Relation.php

@@ -31,6 +31,8 @@ use Friendica\Model\APContact;
 use Friendica\Model\Contact;
 use Friendica\Model\Profile;
 use Friendica\Model\User;
+use Friendica\Model\Verb;
+use Friendica\Protocol\Activity;
 use Friendica\Protocol\ActivityPub;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Strings;
@@ -770,4 +772,77 @@ class Relation
 			['limit' => [$offset, $count], 	'order' => [$shuffle ? 'RAND()' : 'name']]
 		);
 	}
+
+	/**
+	 * Calculate the interaction scores for the given user
+	 *
+	 * @param integer $uid
+	 * @return void
+	 */
+	public static function calculateInteractionScore(int $uid)
+	{
+		$days = DI::config()->get('system', 'interaction_score_days');
+		$contact_id = Contact::getPublicIdByUserId($uid);
+
+		Logger::debug('Calculation - start', ['uid' => $uid, 'cid' => $contact_id, 'days' => $days]);
+
+		$follow = Verb::getID(Activity::FOLLOW);
+		$view = Verb::getID(Activity::VIEW);
+		$read = Verb::getID(Activity::READ);
+
+		DBA::update('contact-relation', ['score' => 0, 'relation-score' => 0, 'thread-score' => 0, 'relation-thread-score' => 0], ['cid' => $contact_id]);
+
+		$total = DBA::fetchFirst("SELECT count(*) AS `activity` FROM `post-user` INNER JOIN `post` ON `post`.`uri-id` = `post-user`.`thr-parent-id` WHERE `post-user`.`author-id` = ? AND `post-user`.`received` >= ? AND `post-user`.`uid` = ? AND `post`.`author-id` != ? AND NOT `post`.`vid` IN (?, ?, ?)",
+			$contact_id, DateTimeFormat::utc('now - ' . $days . ' day'), $uid, $contact_id, $follow, $view, $read);
+
+		Logger::debug('Calculate score', ['uid' => $uid, 'total' => $total['activity']]);
+
+		$interactions = DBA::p("SELECT `post`.`author-id`, count(*) AS `activity` FROM `post-user` INNER JOIN `post` ON `post`.`uri-id` = `post-user`.`thr-parent-id` WHERE `post-user`.`author-id` = ? AND `post-user`.`received` >= ? AND `post-user`.`uid` = ? AND `post`.`author-id` != ? AND NOT `post`.`vid` IN (?, ?, ?) GROUP BY `post`.`author-id`",
+			$contact_id, DateTimeFormat::utc('now - ' . $days . ' day'), $uid, $contact_id, $follow, $view, $read);
+		while ($interaction = DBA::fetch($interactions)) {
+			$score = min((int)(($interaction['activity'] / $total['activity']) * 65535), 65535);
+			DBA::update('contact-relation', ['score' => $score], ['cid' => $contact_id, 'relation-cid' => $interaction['author-id']]);
+		}
+		DBA::close($interactions);
+
+		$total = DBA::fetchFirst("SELECT count(*) AS `activity` FROM `post-user` INNER JOIN `post` ON `post`.`uri-id` = `post-user`.`parent-uri-id` WHERE `post-user`.`author-id` = ? AND `post-user`.`received` >= ? AND `post-user`.`uid` = ? AND `post`.`author-id` != ? AND NOT `post`.`vid` IN (?, ?, ?)",
+			$contact_id, DateTimeFormat::utc('now - ' . $days . ' day'), $uid, $contact_id, $follow, $view, $read);
+
+		Logger::debug('Calculate thread-score', ['uid' => $uid, 'total' => $total['activity']]);
+
+		$interactions = DBA::p("SELECT `post`.`author-id`, count(*) AS `activity` FROM `post-user` INNER JOIN `post` ON `post`.`uri-id` = `post-user`.`parent-uri-id` WHERE `post-user`.`author-id` = ? AND `post-user`.`received` >= ? AND `post-user`.`uid` = ? AND `post`.`author-id` != ? AND NOT `post`.`vid` IN (?, ?, ?) GROUP BY `post`.`author-id`",
+			$contact_id, DateTimeFormat::utc('now - ' . $days . ' day'), $uid, $contact_id, $follow, $view, $read);
+		while ($interaction = DBA::fetch($interactions)) {
+			$score = min((int)(($interaction['activity'] / $total['activity']) * 65535), 65535);
+			DBA::update('contact-relation', ['thread-score' => $score], ['cid' => $contact_id, 'relation-cid' => $interaction['author-id']]);
+		}
+		DBA::close($interactions);
+
+		$total = DBA::fetchFirst("SELECT count(*) AS `activity` FROM `post-user` INNER JOIN `post` ON `post-user`.`uri-id` = `post`.`thr-parent-id` WHERE `post-user`.`author-id` = ? AND `post-user`.`received` >= ? AND `post-user`.`uid` = ? AND `post`.`author-id` != ? AND NOT `post`.`vid` IN (?, ?, ?)",
+			$contact_id, DateTimeFormat::utc('now - ' . $days . ' day'), $uid, $contact_id, $follow, $view, $read);
+
+		Logger::debug('Calculate relation-score', ['uid' => $uid, 'total' => $total['activity']]);
+
+		$interactions = DBA::p("SELECT `post`.`author-id`, count(*) AS `activity` FROM `post-user` INNER JOIN `post` ON `post-user`.`uri-id` = `post`.`thr-parent-id` WHERE `post-user`.`author-id` = ? AND `post-user`.`received` >= ? AND `post-user`.`uid` = ? AND `post`.`author-id` != ? AND NOT `post`.`vid` IN (?, ?, ?) GROUP BY `post`.`author-id`",
+			$contact_id, DateTimeFormat::utc('now - ' . $days . ' day'), $uid, $contact_id, $follow, $view, $read);
+		while ($interaction = DBA::fetch($interactions)) {
+			$score = min((int)(($interaction['activity'] / $total['activity']) * 65535), 65535);
+			DBA::update('contact-relation', ['relation-score' => $score], ['cid' => $contact_id, 'relation-cid' => $interaction['author-id']]);
+		}
+		DBA::close($interactions);
+
+		$total = DBA::fetchFirst("SELECT count(*) AS `activity` FROM `post-user` INNER JOIN `post` ON `post-user`.`uri-id` = `post`.`parent-uri-id` WHERE `post-user`.`author-id` = ? AND `post-user`.`received` >= ? AND `post-user`.`uid` = ? AND `post`.`author-id` != ? AND NOT `post`.`vid` IN (?, ?, ?)",
+			$contact_id, DateTimeFormat::utc('now - ' . $days . ' day'), $uid, $contact_id, $follow, $view, $read);
+
+		Logger::debug('Calculate relation-thread-score', ['uid' => $uid, 'total' => $total['activity']]);
+
+		$interactions = DBA::p("SELECT `post`.`author-id`, count(*) AS `activity` FROM `post-user` INNER JOIN `post` ON `post-user`.`uri-id` = `post`.`parent-uri-id` WHERE `post-user`.`author-id` = ? AND `post-user`.`received` >= ? AND `post-user`.`uid` = ? AND `post`.`author-id` != ? AND NOT `post`.`vid` IN (?, ?, ?) GROUP BY `post`.`author-id`",
+			$contact_id, DateTimeFormat::utc('now - ' . $days . ' day'), $uid, $contact_id, $follow, $view, $read);
+		while ($interaction = DBA::fetch($interactions)) {
+			$score = min((int)(($interaction['activity'] / $total['activity']) * 65535), 65535);
+			DBA::update('contact-relation', ['relation-thread-score' => $score], ['cid' => $contact_id, 'relation-cid' => $interaction['author-id']]);
+		}
+		DBA::close($interactions);
+		Logger::debug('Calculation - end', ['uid' => $uid]);
+	}
 }

src/Worker/Cron.php

@@ -104,6 +104,9 @@ class Cron
 			// Clear cache entries
 			Worker::add(Worker::PRIORITY_LOW, 'ClearCache');
 
+			// Update interaction scores
+			Worker::add(Worker::PRIORITY_LOW, 'UpdateScores');
+
 			DI::keyValue()->set('last_cron_hourly', time());
 		}
 

src/Worker/UpdateAllSuggestions.php

@@ -32,7 +32,7 @@ class UpdateAllSuggestions
 {
 	public static function execute()
 	{
-		$users = DBA::select('user', ['uid'], ["`last-activity` > ?", DateTimeFormat::utc('now - 3 days', 'Y-m-d')]);
+		$users = DBA::select('user', ['uid'], ["`last-activity` > ? AND `uid` > ?", DateTimeFormat::utc('now - 3 days', 'Y-m-d'), 0]);
 		while ($user = DBA::fetch($users)) {
 			Contact\Relation::updateCachedSuggestions($user['uid']);
 		}

src/Worker/UpdateScores.php

@@ -0,0 +1,46 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2023, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Worker;
+
+use Friendica\Core\Logger;
+use Friendica\Database\DBA;
+use Friendica\Model\Contact\Relation;
+
+/**
+ * Update the interaction scores 
+ */
+class UpdateScores
+{
+	public static function execute($param = '', $hook_function = '')
+	{
+		Logger::notice('Start score update');
+
+		$users = DBA::select('user', ['uid'], ["NOT `account_expired` AND NOT `account_removed` AND `uid` > ?", 0]);
+		while ($user = DBA::fetch($users)) {
+			Relation::calculateInteractionScore($user['uid']);
+		}
+		DBA::close($users);
+
+		Logger::notice('Score update done');
+		return;
+	}
+}

static/dbstructure.config.php

@@ -56,7 +56,7 @@ use Friendica\Database\DBA;
 
 // This file is required several times during the test in DbaDefinition which justifies this condition
 if (!defined('DB_UPDATE_VERSION')) {
-	define('DB_UPDATE_VERSION', 1529);
+	define('DB_UPDATE_VERSION', 1530);
 }
 
 return [
@@ -571,6 +571,10 @@ return [
 			"last-interaction" => ["type" => "datetime", "not null" => "1", "default" => DBA::NULL_DATETIME, "comment" => "Date of the last interaction"],
 			"follow-updated" => ["type" => "datetime", "not null" => "1", "default" => DBA::NULL_DATETIME, "comment" => "Date of the last update of the contact relationship"],
 			"follows" => ["type" => "boolean", "not null" => "1", "default" => "0", "comment" => ""],
+			"score" => ["type" => "smallint unsigned", "comment" => "score for interactions of cid on relation-cid"],
+			"relation-score" => ["type" => "smallint unsigned", "comment" => "score for interactions of relation-cid on cid"],
+			"thread-score" => ["type" => "smallint unsigned", "comment" => "score for interactions of cid on threads of relation-cid"],
+			"relation-thread-score" => ["type" => "smallint unsigned", "comment" => "score for interactions of relation-cid on threads of cid"],
 		],
 		"indexes" => [
 			"PRIMARY" => ["cid", "relation-cid"],

static/defaults.config.php

@@ -349,6 +349,10 @@ return [
 		// This has to be quite large to deal with embedded private photos. False to use the system value.
 		'ini_pcre_backtrack_limit' => 500000,
 
+		// interaction_score_days (Integer)
+		// Number of days that are used to calculate the interaction score.
+		'interaction_score_days' => 30,
+
 		// invitation_only (Boolean)
 		// If set true registration is only possible after a current member of the node has sent an invitation.
 		'invitation_only' => false,