www-data
112 lines
2.9 KiB
PHP
112 lines
2.9 KiB
PHP
<?php
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/*
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* usersettings.php
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*
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* Tiny SQLite-backed key/value store for per-user UI preferences.
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*/
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class UserSettingsStoreException extends Exception
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{
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}
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class UserSettingsStore
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{
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private $db;
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public function __construct($dbFile)
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{
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$dir = dirname($dbFile);
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if (!is_dir($dir)) {
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if (!mkdir($dir, 0700, true)) {
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throw new UserSettingsStoreException('Could not create database directory: ' . $dir);
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}
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}
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$this->db = new PDO('sqlite:' . $dbFile);
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$this->db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
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$this->db->exec('PRAGMA journal_mode = WAL');
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$this->db->exec('PRAGMA busy_timeout = 5000');
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$this->init();
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}
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private function init()
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{
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$this->db->exec(
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'CREATE TABLE IF NOT EXISTS user_settings (
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user_id INTEGER NOT NULL,
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setting_key TEXT NOT NULL,
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setting_value TEXT NOT NULL,
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created_at INTEGER NOT NULL,
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updated_at INTEGER NOT NULL,
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PRIMARY KEY(user_id, setting_key)
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)'
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);
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}
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public function get($userId, $key, $default = null)
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{
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$stmt = $this->db->prepare(
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'SELECT setting_value
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FROM user_settings
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WHERE user_id = :user_id
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AND setting_key = :setting_key'
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);
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$stmt->execute(array(
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':user_id' => $this->safeUserId($userId),
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':setting_key' => $this->safeKey($key),
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));
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$row = $stmt->fetch(PDO::FETCH_ASSOC);
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return $row ? (string)$row['setting_value'] : $default;
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}
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public function set($userId, $key, $value)
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{
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$now = time();
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$stmt = $this->db->prepare(
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'INSERT INTO user_settings
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(user_id, setting_key, setting_value, created_at, updated_at)
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VALUES
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(:user_id, :setting_key, :setting_value, :created_at, :updated_at)
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ON CONFLICT(user_id, setting_key)
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DO UPDATE SET
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setting_value = excluded.setting_value,
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updated_at = excluded.updated_at'
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);
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$stmt->execute(array(
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':user_id' => $this->safeUserId($userId),
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':setting_key' => $this->safeKey($key),
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':setting_value' => (string)$value,
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':created_at' => $now,
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':updated_at' => $now,
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));
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}
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private function safeUserId($userId)
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{
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$userId = (int)$userId;
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if ($userId <= 0) {
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throw new UserSettingsStoreException('Invalid user id.');
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}
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return $userId;
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}
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private function safeKey($key)
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{
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$key = trim((string)$key);
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if (!preg_match('/^[a-z0-9_.-]{1,80}$/', $key)) {
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throw new UserSettingsStoreException('Invalid setting key.');
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}
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return $key;
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}
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}
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