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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Cosray\Finder; |
| 6 | |
| 7 | use Cosray\Bootstrap; |
| 8 | use Cosray\Cms; |
| 9 | use Cosray\Context; |
| 10 | use Cosray\Exception\RuntimeException; |
| 11 | use Cosray\Fulltext\Configurations; |
| 12 | use Cosray\Fulltext\Search; |
| 13 | use Cosray\Fulltext\Snippet; |
| 14 | use Cosray\Node\Factory; |
| 15 | use Cosray\Node\Types; |
| 16 | use Cosray\Node\Wrapper; |
| 17 | use Generator; |
| 18 | use Iterator; |
| 19 | use Override; |
| 20 | |
| 21 | /** @implements Iterator<int, Wrapper> */ |
| 22 | final class Nodes implements Iterator |
| 23 | { |
| 24 | use CompilesField; |
| 25 | |
| 26 | private string $whereFields = ''; |
| 27 | private string $whereTypes = ''; |
| 28 | private string $order = ''; |
| 29 | /** @var array<string, string> */ |
| 30 | private array $orderParams = []; |
| 31 | private ?int $limit = null; |
| 32 | private ?int $offset = null; |
| 33 | private ?string $fulltext = null; |
| 34 | private ?bool $activeUrl = null; |
| 35 | private readonly Configurations $configurations; |
| 36 | private ?bool $deleted = false; // defaults to false, if all nodes are needed set $deleted to null |
| 37 | private ?bool $published = true; // ditto |
| 38 | private ?bool $hidden = false; // ditto |
| 39 | /** @var array<string, string> */ |
| 40 | private array $whereParams = []; |
| 41 | /** @var array<string, string> */ |
| 42 | private readonly array $builtins; |
| 43 | private Generator $result; |
| 44 | |
| 45 | public function __construct( |
| 46 | private readonly Context $context, |
| 47 | private readonly Cms $cms, |
| 48 | private readonly Factory $nodeFactory, |
| 49 | private readonly Types $types, |
| 50 | ) { |
| 51 | $this->configurations = new Configurations($context->db); |
| 52 | $this->builtins = [ |
| 53 | 'changed' => 'n.changed', |
| 54 | 'changes' => 'd.node IS NOT NULL', |
| 55 | 'created' => 'n.created', |
| 56 | 'creator' => 'uc.uid', |
| 57 | 'editor' => 'ue.uid', |
| 58 | 'deleted' => 'n.deleted', |
| 59 | 'id' => 'n.uid', |
| 60 | 'locked' => 'n.locked', |
| 61 | 'published' => 'n.published', |
| 62 | 'hidden' => 'n.hidden', |
| 63 | 'parent' => 'np.uid', |
| 64 | 'routable' => $this->typeFlagExpression( |
| 65 | /** @param class-string $class */ |
| 66 | fn(string $class): bool => (bool) $this->types->get($class, 'routable', false), |
| 67 | ), |
| 68 | 'renderable' => $this->typeFlagExpression( |
| 69 | /** @param class-string $class */ |
| 70 | fn(string $class): bool => (bool) $this->types->get($class, 'renderable', false), |
| 71 | ), |
| 72 | 'type' => 't.handle', |
| 73 | 'handle' => 'h.handle', |
| 74 | 'uid' => 'n.uid', |
| 75 | ]; |
| 76 | } |
| 77 | |
| 78 | public function filter(string $query): self |
| 79 | { |
| 80 | $compiler = new QueryCompiler($this->context, $this->builtins); |
| 81 | $this->addWhere($compiler->compile($query)); |
| 82 | |
| 83 | return $this; |
| 84 | } |
| 85 | |
| 86 | /** |
| 87 | * A structured filter, see Filter; `$builtins` limits the builtins it |
| 88 | * may use, null allows all. |
| 89 | * |
| 90 | * @param array<array-key, mixed> $filter |
| 91 | * @param ?list<string> $builtins |
| 92 | */ |
| 93 | public function match(array $filter, ?array $builtins = null): self |
| 94 | { |
| 95 | $this->addWhere(new Filter($this->context, $this->builtins, $builtins)->compile($filter)); |
| 96 | |
| 97 | return $this; |
| 98 | } |
| 99 | |
| 100 | /** |
| 101 | * Only what a reader may see: nodes of the `$any` types in every state, |
| 102 | * nodes of the `$live` types when published and not deleted. |
| 103 | * |
| 104 | * @param list<string> $live type handles |
| 105 | * @param list<string> $any type handles |
| 106 | */ |
| 107 | public function readable(array $live, array $any): self |
| 108 | { |
| 109 | $in = fn(array $handles): string => ( |
| 110 | 't.handle IN (' |
| 111 | . implode(', ', array_map(fn(string $handle): string => $this->context->db->quote($handle), $handles)) |
| 112 | . ')' |
| 113 | ); |
| 114 | $conditions = []; |
| 115 | |
| 116 | if ($any !== []) { |
| 117 | $conditions[] = $in($any); |
| 118 | } |
| 119 | |
| 120 | if ($live !== []) { |
| 121 | $conditions[] = '(' . $in($live) . ' AND n.published AND n.deleted IS NULL)'; |
| 122 | } |
| 123 | |
| 124 | $this->addWhere($conditions === [] ? 'FALSE' : '(' . implode(' OR ', $conditions) . ')'); |
| 125 | |
| 126 | return $this; |
| 127 | } |
| 128 | |
| 129 | public function fulltext(string $query): self |
| 130 | { |
| 131 | $this->fulltext = $query; |
| 132 | |
| 133 | return $this; |
| 134 | } |
| 135 | |
| 136 | public function activeUrl(bool $required = true): self |
| 137 | { |
| 138 | $this->activeUrl = $required; |
| 139 | |
| 140 | return $this; |
| 141 | } |
| 142 | |
| 143 | /** @param array<string> $fields */ |
| 144 | public function search(string $query, array $fields): self |
| 145 | { |
| 146 | $query = trim($query); |
| 147 | |
| 148 | if ($query === '') { |
| 149 | return $this; |
| 150 | } |
| 151 | |
| 152 | $fields = array_values(array_filter(array_map('trim', $fields))); |
| 153 | |
| 154 | if ($fields === []) { |
| 155 | return $this; |
| 156 | } |
| 157 | |
| 158 | $terms = preg_split('/\s+/u', $query, -1, PREG_SPLIT_NO_EMPTY); |
| 159 | |
| 160 | if (!is_array($terms) || $terms === []) { |
| 161 | return $this; |
| 162 | } |
| 163 | |
| 164 | $expressions = array_map( |
| 165 | $this->fieldExpression(...), |
| 166 | $fields, |
| 167 | ); |
| 168 | $termClauses = []; |
| 169 | |
| 170 | foreach ($terms as $term) { |
| 171 | $needle = $this->context->db->quote('%' . $term . '%'); |
| 172 | $fieldClauses = array_map( |
| 173 | static fn(string $expression): string => "COALESCE(({$expression})::text, '') ILIKE {$needle}", |
| 174 | $expressions, |
| 175 | ); |
| 176 | |
| 177 | $termClauses[] = '(' . implode(' OR ', $fieldClauses) . ')'; |
| 178 | } |
| 179 | |
| 180 | $this->addWhere(implode(' AND ', $termClauses)); |
| 181 | |
| 182 | return $this; |
| 183 | } |
| 184 | |
| 185 | public function searchTitle(string $query): self |
| 186 | { |
| 187 | return $this->search($query, ['title']); |
| 188 | } |
| 189 | |
| 190 | public function types(string ...$types): self |
| 191 | { |
| 192 | $this->whereTypes = $this->typesCondition(array_values($types)); |
| 193 | |
| 194 | return $this; |
| 195 | } |
| 196 | |
| 197 | public function type(string $type): self |
| 198 | { |
| 199 | $this->whereTypes = $this->typesCondition([$type]); |
| 200 | |
| 201 | return $this; |
| 202 | } |
| 203 | |
| 204 | public function roots(): self |
| 205 | { |
| 206 | $this->addWhere('n.parent IS NULL'); |
| 207 | |
| 208 | return $this; |
| 209 | } |
| 210 | |
| 211 | public function childrenOf(string $uid): self |
| 212 | { |
| 213 | $uid = trim($uid); |
| 214 | |
| 215 | if ($uid === '') { |
| 216 | throw new RuntimeException('Parent uid is required'); |
| 217 | } |
| 218 | |
| 219 | $param = 'parent_uid_' . count($this->whereParams); |
| 220 | |
| 221 | $this->addWhere('np.uid = :' . $param); |
| 222 | $this->whereParams[$param] = $uid; |
| 223 | |
| 224 | return $this; |
| 225 | } |
| 226 | |
| 227 | /** Restrict the result to the given node uids (order-independent). */ |
| 228 | public function only(string ...$uids): self |
| 229 | { |
| 230 | $uids = array_values(array_filter( |
| 231 | array_map('trim', $uids), |
| 232 | static fn(string $uid): bool => $uid !== '', |
| 233 | )); |
| 234 | |
| 235 | if ($uids === []) { |
| 236 | $this->addWhere('FALSE'); |
| 237 | |
| 238 | return $this; |
| 239 | } |
| 240 | |
| 241 | $placeholders = []; |
| 242 | |
| 243 | foreach ($uids as $uid) { |
| 244 | $param = 'only_uid_' . count($this->whereParams); |
| 245 | $this->whereParams[$param] = $uid; |
| 246 | $placeholders[] = ':' . $param; |
| 247 | } |
| 248 | |
| 249 | $this->addWhere('n.uid IN (' . implode(', ', $placeholders) . ')'); |
| 250 | |
| 251 | return $this; |
| 252 | } |
| 253 | |
| 254 | /** Exclude specific node uids from the result (e.g. self-reference). */ |
| 255 | public function exclude(string ...$uids): self |
| 256 | { |
| 257 | foreach ($uids as $uid) { |
| 258 | $uid = trim($uid); |
| 259 | |
| 260 | if ($uid === '') { |
| 261 | continue; |
| 262 | } |
| 263 | |
| 264 | $param = 'exclude_uid_' . count($this->whereParams); |
| 265 | $this->addWhere('n.uid <> :' . $param); |
| 266 | $this->whereParams[$param] = $uid; |
| 267 | } |
| 268 | |
| 269 | return $this; |
| 270 | } |
| 271 | |
| 272 | public function order(string|Order ...$order): self |
| 273 | { |
| 274 | $compiler = new OrderCompiler( |
| 275 | $this->builtins |
| 276 | + ['title' => fn(): string => $this->context->titleSort()->order($this->context->locale(), 'n.title')], |
| 277 | $this->context, |
| 278 | ); |
| 279 | $this->order = $compiler->compile(...$order); |
| 280 | $this->orderParams = $compiler->params(); |
| 281 | |
| 282 | return $this; |
| 283 | } |
| 284 | |
| 285 | public function limit(int $limit): self |
| 286 | { |
| 287 | $this->limit = $limit; |
| 288 | |
| 289 | return $this; |
| 290 | } |
| 291 | |
| 292 | public function offset(int $offset): self |
| 293 | { |
| 294 | $this->offset = $offset; |
| 295 | |
| 296 | return $this; |
| 297 | } |
| 298 | |
| 299 | public function count(): int |
| 300 | { |
| 301 | $record = $this->context |
| 302 | ->db |
| 303 | ->nodes |
| 304 | ->count($this->baseParams()) |
| 305 | ->one(); |
| 306 | |
| 307 | return (int) ($record['count'] ?? 0); |
| 308 | } |
| 309 | |
| 310 | public function published(?bool $published): self |
| 311 | { |
| 312 | $this->published = $published; |
| 313 | |
| 314 | return $this; |
| 315 | } |
| 316 | |
| 317 | public function hidden(?bool $hidden): self |
| 318 | { |
| 319 | $this->hidden = $hidden; |
| 320 | |
| 321 | return $this; |
| 322 | } |
| 323 | |
| 324 | public function deleted(?bool $deleted): self |
| 325 | { |
| 326 | $this->deleted = $deleted; |
| 327 | |
| 328 | return $this; |
| 329 | } |
| 330 | |
| 331 | #[Override] |
| 332 | public function rewind(): void |
| 333 | { |
| 334 | if (!isset($this->result)) { |
| 335 | $this->fetchResult(); |
| 336 | } |
| 337 | $this->result->rewind(); |
| 338 | } |
| 339 | |
| 340 | #[Override] |
| 341 | public function current(): Wrapper |
| 342 | { |
| 343 | if (!isset($this->result)) { |
| 344 | $this->fetchResult(); |
| 345 | } |
| 346 | |
| 347 | $row = $this->result->current(); |
| 348 | |
| 349 | $row['content'] = json_decode($row['content'], true); |
| 350 | $row['title'] = json_decode($row['title'], true); |
| 351 | $row['editor_data'] = json_decode($row['editor_data'], true); |
| 352 | $row['creator_data'] = json_decode($row['creator_data'], true); |
| 353 | $row['paths'] = json_decode($row['paths'], true); |
| 354 | $row = Node::foldDraft($row); |
| 355 | if (isset($row['search_score'], $row['search_headline'])) { |
| 356 | $row['search'] = new Search((float) $row['search_score'], new Snippet($row['search_headline'])); |
| 357 | unset($row['search_score'], $row['search_headline']); |
| 358 | } |
| 359 | $class = $this->context |
| 360 | ->container |
| 361 | ->tag(Bootstrap::NODE_TAG) |
| 362 | ->entry($row['type_handle']) |
| 363 | ->definition(); |
| 364 | |
| 365 | $node = $this->nodeFactory->create($class, $this->context, $this->cms, $row); |
| 366 | |
| 367 | return $this->nodeFactory->proxy($node, $this->context, $this->cms); |
| 368 | } |
| 369 | |
| 370 | #[Override] |
| 371 | public function key(): int |
| 372 | { |
| 373 | return $this->result->key(); |
| 374 | } |
| 375 | |
| 376 | #[Override] |
| 377 | public function next(): void |
| 378 | { |
| 379 | $this->result->next(); |
| 380 | } |
| 381 | |
| 382 | #[Override] |
| 383 | public function valid(): bool |
| 384 | { |
| 385 | return $this->result->valid(); |
| 386 | } |
| 387 | |
| 388 | private function fetchResult(): void |
| 389 | { |
| 390 | $params = $this->baseParams(); |
| 391 | |
| 392 | if ($this->order) { |
| 393 | $params['order'] = $this->order; |
| 394 | $params = [...$params, ...$this->orderParams]; |
| 395 | } elseif ($this->fulltext !== null) { |
| 396 | $params['order'] = 'search_score DESC, n.uid ASC'; |
| 397 | } |
| 398 | |
| 399 | if ($this->limit !== null) { |
| 400 | $params['limit'] = $this->limit; |
| 401 | } |
| 402 | |
| 403 | if ($this->offset !== null) { |
| 404 | $params['offset'] = $this->offset; |
| 405 | } |
| 406 | |
| 407 | $this->result = $this->context |
| 408 | ->db |
| 409 | ->nodes |
| 410 | ->find($params) |
| 411 | ->lazy(); |
| 412 | } |
| 413 | |
| 414 | /** @return array<string, mixed> */ |
| 415 | private function baseParams(): array |
| 416 | { |
| 417 | $conditions = implode(' AND ', array_filter( |
| 418 | [ |
| 419 | trim($this->whereFields), |
| 420 | trim($this->whereTypes), |
| 421 | ], |
| 422 | static fn(string $clause): bool => $clause !== '', |
| 423 | )); |
| 424 | |
| 425 | $params = [ |
| 426 | 'condition' => $conditions, |
| 427 | ]; |
| 428 | |
| 429 | if ($this->whereParams !== []) { |
| 430 | $params = array_merge($params, $this->whereParams); |
| 431 | } |
| 432 | |
| 433 | if (is_bool($this->deleted)) { |
| 434 | $params['deleted'] = $this->deleted; |
| 435 | } |
| 436 | |
| 437 | if (is_bool($this->published)) { |
| 438 | $params['published'] = $this->published; |
| 439 | } |
| 440 | |
| 441 | if (is_bool($this->hidden)) { |
| 442 | $params['hidden'] = $this->hidden; |
| 443 | } |
| 444 | |
| 445 | if ($this->fulltext !== null) { |
| 446 | $params['fulltext'] = $this->fulltext; |
| 447 | $params['search_locale'] = $this->context->localeId(); |
| 448 | $params['search_config'] = $this->configurations->for($this->context->locale()); |
| 449 | } |
| 450 | |
| 451 | // An explicit activeUrl() wins; otherwise the gate is on while fulltext() is active. |
| 452 | if ($this->activeUrl ?? $this->fulltext !== null) { |
| 453 | $params['active_url'] = true; |
| 454 | $params['url_locales'] = json_encode($this->localeIds(), JSON_THROW_ON_ERROR); |
| 455 | $params['routable'] = $this->builtins['routable']; |
| 456 | } |
| 457 | |
| 458 | return $params; |
| 459 | } |
| 460 | |
| 461 | private function addWhere(string $clause): void |
| 462 | { |
| 463 | $clause = trim($clause); |
| 464 | |
| 465 | if ($clause === '') { |
| 466 | return; |
| 467 | } |
| 468 | |
| 469 | if ($this->whereFields === '') { |
| 470 | $this->whereFields = $clause; |
| 471 | |
| 472 | return; |
| 473 | } |
| 474 | |
| 475 | $this->whereFields = "({$this->whereFields}) AND ({$clause})"; |
| 476 | } |
| 477 | |
| 478 | private function fieldExpression(string $field): string |
| 479 | { |
| 480 | // The materialized title also covers computed titles that have no |
| 481 | // content field. Only its values are matched, never the locale keys. |
| 482 | if ($field === 'title') { |
| 483 | return "(SELECT string_agg(value, ' ') FROM jsonb_each_text(n.title))"; |
| 484 | } |
| 485 | |
| 486 | $builtin = $this->builtins[$field] ?? null; |
| 487 | |
| 488 | if (is_string($builtin) && $builtin !== '') { |
| 489 | return $builtin; |
| 490 | } |
| 491 | |
| 492 | if (!preg_match('/^[A-Za-z][A-Za-z0-9._-]*$/', $field)) { |
| 493 | throw new RuntimeException('Invalid field name for search: ' . $field); |
| 494 | } |
| 495 | |
| 496 | return $this->compileField($field, 'n.content', localeIds: $this->localeIds()); |
| 497 | } |
| 498 | |
| 499 | /** @return list<string> */ |
| 500 | private function localeIds(): array |
| 501 | { |
| 502 | $ids = []; |
| 503 | $locale = $this->context->locale(); |
| 504 | |
| 505 | while ($locale) { |
| 506 | $ids[] = $locale->id; |
| 507 | $locale = $locale->fallback(); |
| 508 | } |
| 509 | |
| 510 | return $ids; |
| 511 | } |
| 512 | |
| 513 | /** @param list<string> $types */ |
| 514 | private function typesCondition(array $types): string |
| 515 | { |
| 516 | $result = []; |
| 517 | |
| 518 | foreach ($types as $type) { |
| 519 | if (class_exists($type)) { |
| 520 | $type = (string) $this->types->get($type, 'handle'); |
| 521 | } |
| 522 | |
| 523 | $result[] = 't.handle = ' . $this->context->db->quote($type); |
| 524 | } |
| 525 | |
| 526 | return match (count($result)) { |
| 527 | 0 => '', |
| 528 | 1 => ' ' . $result[0], |
| 529 | default => " (\n " . implode("\n OR ", $result) . "\n )", |
| 530 | }; |
| 531 | } |
| 532 | |
| 533 | /** @param callable(class-string): bool $flag */ |
| 534 | private function typeFlagExpression(callable $flag): string |
| 535 | { |
| 536 | $handles = []; |
| 537 | $types = $this->context->container->tag(Bootstrap::NODE_TAG); |
| 538 | |
| 539 | foreach ($types->entries() as $handle) { |
| 540 | $class = $types->entry($handle)->definition(); |
| 541 | |
| 542 | if (!is_string($class) || !class_exists($class) || !$flag($class)) { |
| 543 | continue; |
| 544 | } |
| 545 | |
| 546 | $handles[] = $this->context->db->quote($handle); |
| 547 | } |
| 548 | |
| 549 | sort($handles); |
| 550 | |
| 551 | if ($handles === []) { |
| 552 | return 'FALSE'; |
| 553 | } |
| 554 | |
| 555 | return 't.handle IN (' . implode(', ', $handles) . ')'; |
| 556 | } |
| 557 | } |