93 lines
2.8 KiB
PHP
93 lines
2.8 KiB
PHP
<?php
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/**
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* class Log
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*
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* Handles logging events into a database and reading log entries.
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*/
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class Log {
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/**
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* @var PDO|null $db The database connection instance.
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*/
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private $db;
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/**
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* Constructor to initialize the database connection.
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*
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* @param object $database An object providing the database connection.
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*/
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public function __construct($database) {
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$this->db = $database->getConnection();
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}
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/**
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* Insert a log event into the database.
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*
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* @param int $user_id The ID of the user associated with the log event.
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* @param string $message The log message to insert.
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* @param string $scope The scope of the log event (e.g., 'user', 'system'). Default is 'user'.
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*
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* @return bool|string True on success, or an error message on failure.
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*/
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public function insertLog($user_id, $message, $scope='user') {
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try {
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$sql = 'INSERT INTO logs
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(user_id, scope, message)
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VALUES
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(:user_id, :scope, :message)';
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$query = $this->db->prepare($sql);
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$query->execute([
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':user_id' => $user_id,
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':scope' => $scope,
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':message' => $message,
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]);
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return true;
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} catch (Exception $e) {
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return $e->getMessage();
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}
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}
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/**
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* Retrieve log entries from the database.
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*
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* @param int $user_id The ID of the user whose logs are being retrieved.
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* @param string $scope The scope of the logs ('user' or 'system').
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* @param int $offset The offset for pagination. Default is 0.
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* @param int $items_per_page The number of log entries to retrieve per page. Default is no limit.
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*
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* @return array An array of log entries.
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*/
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public function readLog($user_id, $scope, $offset=0, $items_per_page='') {
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if ($scope === 'user') {
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$sql = 'SELECT * FROM logs WHERE user_id = :user_id ORDER BY time DESC';
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if ($items_per_page) {
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$items_per_page = (int)$items_per_page;
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$sql .= ' LIMIT ' . $offset . ',' . $items_per_page;
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}
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$query = $this->db->prepare($sql);
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$query->execute([
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':user_id' => $user_id,
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]);
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}
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if ($scope === 'system') {
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$sql = 'SELECT * FROM logs ORDER BY time DESC';
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if ($items_per_page) {
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$items_per_page = (int)$items_per_page;
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$sql .= ' LIMIT ' . $offset . ',' . $items_per_page;
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}
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$query = $this->db->prepare($sql);
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$query->execute();
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}
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return $query->fetchAll(PDO::FETCH_ASSOC);
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}
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}
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?>
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