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| 1 | <?php |
| 2 | |
| 3 | App::uses('Auth', 'Utility'); |
| 4 | App::uses('Util', 'Utility'); |
| 5 | |
| 6 | /** |
| 7 | * Unified Preferences storage class. |
| 8 | * |
| 9 | * - For logged-in users: Uses UserContribution table in database |
| 10 | * - For guests: Uses cookies (or in-memory storage during tests) |
| 11 | * |
| 12 | * Supported keys (matching TsumegoFilters/UserContribution columns): |
| 13 | * - query |
| 14 | * - collection_size |
| 15 | * - filtered_sets |
| 16 | * - filtered_ranks |
| 17 | * - filtered_tags |
| 18 | */ |
| 19 | class Preferences |
| 20 | { |
| 21 | /** |
| 22 | * In-memory storage for unit tests (where setcookie() won't work) |
| 23 | * @var array<string, mixed> |
| 24 | */ |
| 25 | private static array $testStorage = []; |
| 26 | |
| 27 | /** |
| 28 | * Database default values - used to detect if a value was explicitly set |
| 29 | */ |
| 30 | private static array $dbDefaults = [ |
| 31 | 'query' => 'topics', |
| 32 | 'collection_size' => 200, |
| 33 | 'filtered_sets' => null, |
| 34 | 'filtered_ranks' => null, |
| 35 | 'filtered_tags' => null, |
| 36 | ]; |
| 37 | |
| 38 | /** |
| 39 | * Valid preference keys (must match UserContribution columns) |
| 40 | */ |
| 41 | private static array $validKeys = [ |
| 42 | 'query', |
| 43 | 'collection_size', |
| 44 | 'filtered_sets', |
| 45 | 'filtered_ranks', |
| 46 | 'filtered_tags', |
| 47 | ]; |
| 48 | |
| 49 | /** |
| 50 | * Get a preference value |
| 51 | * |
| 52 | * @param string $key The preference key |
| 53 | * @param mixed $default Default value if not set |
| 54 | * @return mixed The preference value |
| 55 | */ |
| 56 | public static function get(string $key, $default = null) |
| 57 | { |
| 58 | self::validateKey($key); |
| 59 | |
| 60 | // Check cookie override first (applies to both guests and logged-in users) |
| 61 | // For logged-in users: Check unprefixed cookie (set by layout.ctp JS) |
| 62 | // For guests: Check prefixed cookie ("loggedOff_" + key) |
| 63 | if (Auth::isLoggedIn()) |
| 64 | { |
| 65 | // Logged-in users: unprefixed cookie override |
| 66 | if (isset($_COOKIE[$key]) && $_COOKIE[$key] !== '') |
| 67 | return $_COOKIE[$key]; |
| 68 | // Fall through to database |
| 69 | return self::getFromDatabase($key, $default); |
| 70 | } |
| 71 | else |
| 72 | { |
| 73 | // Guests: check prefixed cookie first |
| 74 | $cookieKey = 'loggedOff_' . $key; |
| 75 | if (isset($_COOKIE[$cookieKey]) && $_COOKIE[$cookieKey] !== '') |
| 76 | return $_COOKIE[$cookieKey]; |
| 77 | // Fall through to guest storage (which checks same cookie again, but that's OK) |
| 78 | return self::getFromGuestStorage($key, $default); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Set a preference value |
| 84 | * |
| 85 | * @param string $key The preference key |
| 86 | * @param mixed $value The value to set |
| 87 | */ |
| 88 | public static function set(string $key, $value): void |
| 89 | { |
| 90 | self::validateKey($key); |
| 91 | |
| 92 | if (Auth::isLoggedIn()) |
| 93 | self::setInDatabase($key, $value); |
| 94 | else |
| 95 | self::setInGuestStorage($key, $value); |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Merge guest preferences into database on login. |
| 100 | * Should be called after successful login. |
| 101 | */ |
| 102 | public static function mergeGuestPreferencesOnLogin(): void |
| 103 | { |
| 104 | if (!Auth::isLoggedIn()) |
| 105 | return; |
| 106 | |
| 107 | foreach (self::$validKeys as $key) |
| 108 | { |
| 109 | $guestValue = self::getFromGuestStorage($key); |
| 110 | if ($guestValue !== null) |
| 111 | { |
| 112 | // Only set if not already explicitly set in database |
| 113 | // (i.e., current value is null, empty, or equals the database default) |
| 114 | $currentDbValue = self::getFromDatabase($key); |
| 115 | $isDefault = self::isDefaultValue($key, $currentDbValue); |
| 116 | if ($currentDbValue === null || $currentDbValue === '' || $isDefault) |
| 117 | self::setInDatabase($key, $guestValue); |
| 118 | |
| 119 | // Clear guest storage |
| 120 | self::clearGuestStorageKey($key); |
| 121 | } |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | /** |
| 126 | * Check if a value equals the database default for a key |
| 127 | */ |
| 128 | private static function isDefaultValue(string $key, $value): bool |
| 129 | { |
| 130 | if (!isset(self::$dbDefaults[$key])) |
| 131 | return false; |
| 132 | |
| 133 | $default = self::$dbDefaults[$key]; |
| 134 | // Handle numeric comparison (DB might return string "200" vs int 200) |
| 135 | if (is_numeric($value) && is_numeric($default)) |
| 136 | return (int) $value === (int) $default; |
| 137 | |
| 138 | return $value === $default; |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * Clear all test storage (for use in test tearDown) |
| 143 | */ |
| 144 | public static function clearTestStorage(): void |
| 145 | { |
| 146 | self::$testStorage = []; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Get preference from database (for logged-in users) |
| 151 | */ |
| 152 | private static function getFromDatabase(string $key, $default = null) |
| 153 | { |
| 154 | $userContribution = ClassRegistry::init('UserContribution')->find('first', [ |
| 155 | 'conditions' => ['user_id' => Auth::getUserID()], |
| 156 | ]); |
| 157 | |
| 158 | if (!$userContribution || !isset($userContribution['UserContribution'][$key])) |
| 159 | return $default; |
| 160 | |
| 161 | $value = $userContribution['UserContribution'][$key]; |
| 162 | return ($value === '') ? $default : $value; |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * Set preference in database (for logged-in users) |
| 167 | */ |
| 168 | private static function setInDatabase(string $key, $value): void |
| 169 | { |
| 170 | $userId = Auth::getUserID(); |
| 171 | $userContribution = ClassRegistry::init('UserContribution')->find('first', ['conditions' => ['user_id' => $userId]]); |
| 172 | |
| 173 | if ($userContribution) |
| 174 | { |
| 175 | // Update existing record |
| 176 | $userContribution['UserContribution'][$key] = $value; |
| 177 | ClassRegistry::init('UserContribution')->save($userContribution); |
| 178 | } |
| 179 | else |
| 180 | { |
| 181 | // Create new record |
| 182 | $newContribution = ['user_id' => $userId, $key => $value]; |
| 183 | ClassRegistry::init('UserContribution')->create(); |
| 184 | ClassRegistry::init('UserContribution')->save($newContribution); |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Get preference from guest storage (cookies or test memory) |
| 190 | */ |
| 191 | private static function getFromGuestStorage(string $key, $default = null) |
| 192 | { |
| 193 | // In unit tests, use memory storage |
| 194 | if (self::isInUnitTest()) |
| 195 | return self::$testStorage[$key] ?? $default; |
| 196 | |
| 197 | // Cookie key uses 'loggedOff_' prefix for backward compatibility |
| 198 | $cookieKey = 'loggedOff_' . $key; |
| 199 | return $_COOKIE[$cookieKey] ?? $default; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Set preference in guest storage (cookies or test memory) |
| 204 | */ |
| 205 | private static function setInGuestStorage(string $key, $value): void |
| 206 | { |
| 207 | // In unit tests, use memory storage |
| 208 | if (self::isInUnitTest()) |
| 209 | { |
| 210 | self::$testStorage[$key] = $value; |
| 211 | return; |
| 212 | } |
| 213 | |
| 214 | // Cookie key uses 'loggedOff_' prefix for backward compatibility |
| 215 | $cookieKey = 'loggedOff_' . $key; |
| 216 | Util::setCookie($cookieKey, $value); |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * Clear a single key from guest storage |
| 221 | */ |
| 222 | private static function clearGuestStorageKey(string $key): void |
| 223 | { |
| 224 | if (self::isInUnitTest()) |
| 225 | { |
| 226 | unset(self::$testStorage[$key]); |
| 227 | return; |
| 228 | } |
| 229 | |
| 230 | $cookieKey = 'loggedOff_' . $key; |
| 231 | Util::clearCookie($cookieKey); |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * Check if we're running in a unit test environment |
| 236 | * |
| 237 | * NOTE: Only checks PHPUNIT_RUNNING, not php_sapi_name() === 'cli' |
| 238 | * because CLI check would also trigger in production CLI commands |
| 239 | * (cron jobs, migrations, shells) where we want real cookies, not test storage. |
| 240 | */ |
| 241 | private static function isInUnitTest(): bool |
| 242 | { |
| 243 | return defined('PHPUNIT_RUNNING'); |
| 244 | } |
| 245 | |
| 246 | /** |
| 247 | * Validate that the key is allowed |
| 248 | */ |
| 249 | private static function validateKey(string $key): void |
| 250 | { |
| 251 | if (!in_array($key, self::$validKeys)) |
| 252 | throw new InvalidArgumentException("Invalid preference key: $key. Valid keys are: " . implode(', ', self::$validKeys)); |
| 253 | } |
| 254 | } |