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| 1 | <?php |
| 2 | |
| 3 | namespace QuickSurveys; |
| 4 | |
| 5 | use InvalidArgumentException; |
| 6 | use Psr\Log\LoggerInterface; |
| 7 | |
| 8 | class SurveyFactory { |
| 9 | private const VALID_PLATFORM_MODES = [ |
| 10 | 'desktop' => [ |
| 11 | 'stable', |
| 12 | ], |
| 13 | 'mobile' => [ |
| 14 | 'stable', |
| 15 | 'beta', |
| 16 | ], |
| 17 | ]; |
| 18 | |
| 19 | private LoggerInterface $logger; |
| 20 | |
| 21 | /** |
| 22 | * Inject services. |
| 23 | */ |
| 24 | public function __construct( LoggerInterface $logger ) { |
| 25 | $this->logger = $logger; |
| 26 | } |
| 27 | |
| 28 | /** |
| 29 | * @param array[] $specs Raw configuration from $wgQuickSurveysConfig |
| 30 | * @return Survey[] List of valid and enabled surveys |
| 31 | */ |
| 32 | public function parseSurveyConfig( array $specs ): array { |
| 33 | if ( !array_is_list( $specs ) ) { |
| 34 | $this->logger->error( 'Bad surveys configuration: The surveys configuration is not a list.' ); |
| 35 | |
| 36 | return []; |
| 37 | } |
| 38 | |
| 39 | $surveys = []; |
| 40 | foreach ( $specs as $spec ) { |
| 41 | $enabled = $spec['enabled'] ?? false; |
| 42 | if ( $this->validateUniqueName( $spec, $specs ) && $enabled ) { |
| 43 | $survey = $this->newSurvey( $spec ); |
| 44 | if ( $survey ) { |
| 45 | $surveys[] = $survey; |
| 46 | } |
| 47 | } |
| 48 | } |
| 49 | return $surveys; |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * checks QuickSurveys name for duplications |
| 54 | * |
| 55 | * @param array $spec |
| 56 | * @param array[] $specs |
| 57 | * @return bool |
| 58 | */ |
| 59 | private function validateUniqueName( array $spec, array $specs ): bool { |
| 60 | if ( !isset( $spec[ 'name' ] ) ) { |
| 61 | $this->logger->error( "Bad survey configuration: The survey name does not have a value", |
| 62 | [ 'exception' => "Bad survey configuration: The survey name does not have a value" ] ); |
| 63 | return false; |
| 64 | } |
| 65 | if ( count( $specs ) < 2 ) { |
| 66 | return true; |
| 67 | } |
| 68 | |
| 69 | $name = trim( $spec[ 'name' ] ); |
| 70 | $numberDuplicates = 0; |
| 71 | |
| 72 | foreach ( $specs as $specArray ) { |
| 73 | // if there is more than one copy of the item, it is a duplicate, enter log message |
| 74 | if ( ( $specArray['enabled'] ?? false ) && |
| 75 | strcasecmp( trim( $specArray['name'] ?? '' ), $name ) === 0 && |
| 76 | $numberDuplicates++ |
| 77 | ) { |
| 78 | // write out to logger |
| 79 | $this->logger->error( "Bad survey configuration: The survey name \"{$name}\" is not unique", |
| 80 | [ 'exception' => "The \"{$name}\" survey name is not unique" ] ); |
| 81 | return false; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | return true; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Creates an instance of either the InternalSurvey or ExternalSurvey class |
| 90 | * given a specification. |
| 91 | * |
| 92 | * An exception is thrown if any of the following conditions aren't met: |
| 93 | * |
| 94 | * <ul> |
| 95 | * <li>A survey must have a question</li> |
| 96 | * <li>A survey must have a description</li> |
| 97 | * <li>A survey's type must be either "internal" or "external"</li> |
| 98 | * <li>A survey must have a coverage</li> |
| 99 | * <li>An internal survey must have a set of questions</li> |
| 100 | * <li>An external survey must have a privacy policy</li> |
| 101 | * <li>An internal survey must have a layout of either "single-answer" or "multiple-answer"</li> |
| 102 | * </ul> |
| 103 | * |
| 104 | * @param array $spec |
| 105 | * @return Survey|null |
| 106 | */ |
| 107 | public function newSurvey( array $spec ): ?Survey { |
| 108 | try { |
| 109 | $this->validateSpec( $spec ); |
| 110 | return $spec['type'] === 'internal' |
| 111 | ? $this->factoryInternal( $spec ) |
| 112 | : $this->factoryExternal( $spec ); |
| 113 | } catch ( InvalidArgumentException $ex ) { |
| 114 | $this->logger->error( "Bad survey configuration: " . $ex->getMessage(), [ 'exception' => $ex ] ); |
| 115 | return null; |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * @param array $spec |
| 121 | * @throws InvalidArgumentException |
| 122 | */ |
| 123 | private function validateSpec( array $spec ): void { |
| 124 | $name = $spec['name']; |
| 125 | |
| 126 | if ( !isset( $spec['question'] ) && ( !isset( $spec['questions'] ) || !$spec['questions'] ) ) { |
| 127 | throw new InvalidArgumentException( "The \"{$name}\" survey doesn't have a question." ); |
| 128 | } |
| 129 | |
| 130 | if ( |
| 131 | !isset( $spec['type'] ) |
| 132 | || ( $spec['type'] !== 'internal' && $spec['type'] !== 'external' ) |
| 133 | ) { |
| 134 | throw new InvalidArgumentException( |
| 135 | "The \"{$name}\" survey isn't marked as internal or external." |
| 136 | ); |
| 137 | } |
| 138 | |
| 139 | if ( !isset( $spec['coverage'] ) ) { |
| 140 | throw new InvalidArgumentException( "The \"{$name}\" survey doesn't have a coverage." ); |
| 141 | } |
| 142 | |
| 143 | if ( !isset( $spec['platforms'] ) ) { |
| 144 | throw new InvalidArgumentException( "The \"{$name}\" survey doesn't have any platforms." ); |
| 145 | } |
| 146 | |
| 147 | if ( $spec['type'] === 'external' ) { |
| 148 | $link = null; |
| 149 | if ( isset( $spec['link'] ) ) { |
| 150 | $link = $spec['link']; |
| 151 | } elseif ( |
| 152 | isset( $spec['questions'] ) && |
| 153 | isset( $spec['questions'][0] ) && |
| 154 | isset( $spec['questions'][0]['link'] ) |
| 155 | ) { |
| 156 | $link = $spec['questions'][0]['link']; |
| 157 | } |
| 158 | |
| 159 | if ( $link !== null ) { |
| 160 | $url = wfMessage( $link )->inContentLanguage()->plain(); |
| 161 | $bit = parse_url( $url, PHP_URL_SCHEME ); |
| 162 | |
| 163 | if ( $bit !== 'https' ) { |
| 164 | throw new InvalidArgumentException( "The \"{$name}\" external survey must have a secure url." ); |
| 165 | } |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | $this->validatePlatforms( $spec ); |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * @param array $spec |
| 174 | * @throws InvalidArgumentException |
| 175 | */ |
| 176 | private function validatePlatforms( array $spec ): void { |
| 177 | foreach ( self::VALID_PLATFORM_MODES as $platform => $validModes ) { |
| 178 | if ( !isset( $spec['platforms'][$platform] ) ) { |
| 179 | continue; |
| 180 | } |
| 181 | |
| 182 | $modes = $spec['platforms'][$platform]; |
| 183 | |
| 184 | if ( |
| 185 | !is_array( $modes ) || |
| 186 | array_diff( |
| 187 | $modes, |
| 188 | array_intersect( |
| 189 | $validModes, |
| 190 | $modes |
| 191 | ) |
| 192 | ) |
| 193 | ) { |
| 194 | throw new InvalidArgumentException( |
| 195 | "The \"{$spec['name']}\" survey has specified an invalid platform. " . |
| 196 | "Please specify one or more of the following for the \"{$platform}\" platform: " . |
| 197 | implode( ', ', $validModes ) . |
| 198 | '.' |
| 199 | ); |
| 200 | } |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * @param array $spec |
| 206 | * @throws InvalidArgumentException |
| 207 | */ |
| 208 | private function validateExternalSurveyQuestions( array $spec ): void { |
| 209 | $surveyName = $spec['name']; |
| 210 | $questions = $spec['questions'] ?? []; |
| 211 | |
| 212 | if ( count( $questions ) !== 1 ) { |
| 213 | throw new InvalidArgumentException( |
| 214 | "The \"{$surveyName}\" external survey should only have one question." |
| 215 | ); |
| 216 | } |
| 217 | |
| 218 | $question = $questions[0]; |
| 219 | |
| 220 | $name = $question['name'] ?? null; |
| 221 | if ( !$name ) { |
| 222 | throw new InvalidArgumentException( |
| 223 | "The \"{$surveyName}\" external survey doesn't have a question name." |
| 224 | ); |
| 225 | } |
| 226 | |
| 227 | $questionText = $question['question'] ?? null; |
| 228 | if ( !$questionText ) { |
| 229 | throw new InvalidArgumentException( |
| 230 | "The \"{$surveyName}\" external survey doesn't have a question." |
| 231 | ); |
| 232 | } |
| 233 | |
| 234 | $link = $question['link'] ?? null; |
| 235 | if ( !$link ) { |
| 236 | throw new InvalidArgumentException( |
| 237 | "The \"{$surveyName}\" external survey doesn't have a link." |
| 238 | ); |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | /** |
| 243 | * @param array $spec |
| 244 | * @throws InvalidArgumentException |
| 245 | */ |
| 246 | private function validateInternalSurveyQuestions( array $spec ): void { |
| 247 | $surveyName = $spec['name']; |
| 248 | $questions = $spec['questions'] ?? []; |
| 249 | $questionsByName = []; |
| 250 | |
| 251 | foreach ( $questions as $key => $question ) { |
| 252 | $name = $question['name'] ?? null; |
| 253 | if ( !$name ) { |
| 254 | throw new InvalidArgumentException( |
| 255 | "Question at index \"{$key}\" in the \"{$surveyName}\" internal survey " . |
| 256 | "doesn't have a name." |
| 257 | ); |
| 258 | } |
| 259 | |
| 260 | if ( array_key_exists( $name, $questionsByName ) ) { |
| 261 | throw new InvalidArgumentException( |
| 262 | "Question at index \"{$key}\" in the \"{$surveyName}\" internal survey " . |
| 263 | "has a name that's used by a previous question." |
| 264 | ); |
| 265 | } |
| 266 | $questionsByName[$name] = $question; |
| 267 | |
| 268 | $layout = $question['layout'] ?? null; |
| 269 | if ( !$layout || !in_array( $layout, [ 'single-answer', 'multiple-answer' ] ) ) { |
| 270 | throw new InvalidArgumentException( |
| 271 | "Question at index \"{$key}\" in the \"{$surveyName}\" internal survey " . |
| 272 | "has a layout that's not one of \"single-answer\" or \"multiple-answer\"." |
| 273 | ); |
| 274 | } |
| 275 | |
| 276 | $surveyQuestion = $question['question'] ?? null; |
| 277 | if ( !$surveyQuestion ) { |
| 278 | throw new InvalidArgumentException( |
| 279 | "Question at index \"{$key}\" in the \"{$surveyName}\" internal survey " . |
| 280 | "doesn't have a question." |
| 281 | ); |
| 282 | } |
| 283 | |
| 284 | $answers = $question['answers'] ?? []; |
| 285 | if ( !$answers ) { |
| 286 | throw new InvalidArgumentException( |
| 287 | "Question at index \"{$key}\" in the \"{$surveyName}\" internal survey " . |
| 288 | "has no answers." |
| 289 | ); |
| 290 | } |
| 291 | foreach ( $answers as $answer ) { |
| 292 | $label = $answer['label'] ?? null; |
| 293 | if ( $label === null ) { |
| 294 | throw new InvalidArgumentException( |
| 295 | "Question at index \"{$key}\" in the \"{$surveyName}\" internal survey " . |
| 296 | "has an answer with no label." |
| 297 | ); |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | $dependsOn = $question['dependsOn'] ?? []; |
| 302 | if ( $dependsOn ) { |
| 303 | foreach ( $dependsOn as $dependency ) { |
| 304 | $dependencyName = $dependency['question'] ?? null; |
| 305 | $answerIsOneOf = $dependency['answerIsOneOf'] ?? []; |
| 306 | |
| 307 | if ( !$dependencyName ) { |
| 308 | throw new InvalidArgumentException( |
| 309 | "Question at index \"{$key}\" in the \"{$surveyName}\" internal survey " . |
| 310 | "has a dependency that is not referencing any question." |
| 311 | ); |
| 312 | } |
| 313 | |
| 314 | if ( !array_key_exists( $dependencyName, $questionsByName ) ) { |
| 315 | throw new InvalidArgumentException( |
| 316 | "Question at index \"{$key}\" in the \"{$surveyName}\" internal survey " . |
| 317 | "depends on a question that does not exist prior to itself." |
| 318 | ); |
| 319 | } elseif ( $dependencyName === $name ) { |
| 320 | throw new InvalidArgumentException( |
| 321 | "Question at index \"{$key}\" in the \"{$surveyName}\" internal survey " . |
| 322 | "is referencing itself as a question it depends on." |
| 323 | ); |
| 324 | } |
| 325 | |
| 326 | $referencedQuestion = $questionsByName[$dependencyName]; |
| 327 | $referencedAnswers = array_map( |
| 328 | static fn ( array $answer ): string => $answer['label'], |
| 329 | $referencedQuestion['answers'] |
| 330 | ); |
| 331 | |
| 332 | foreach ( $answerIsOneOf as $answer ) { |
| 333 | if ( !in_array( $answer, $referencedAnswers ) ) { |
| 334 | throw new InvalidArgumentException( |
| 335 | "Question at index \"{$key}\" in the \"{$surveyName}\" internal survey " . |
| 336 | "depends on an answer that doesn't exist on the referenced question." |
| 337 | ); |
| 338 | } |
| 339 | } |
| 340 | } |
| 341 | } |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * @param array $spec |
| 347 | * @throws InvalidArgumentException |
| 348 | * @return ExternalSurvey |
| 349 | */ |
| 350 | private function factoryExternal( array $spec ): ExternalSurvey { |
| 351 | $name = $spec['name']; |
| 352 | $questions = $spec['questions'] ?? []; |
| 353 | |
| 354 | // Deprecated fields. |
| 355 | $question = $spec['question'] ?? null; |
| 356 | $description = $spec['description'] ?? null; |
| 357 | $link = $spec['link'] ?? null; |
| 358 | $privacyPolicy = $spec['privacyPolicy'] ?? null; |
| 359 | $yesMsg = $spec['yesMsg'] ?? null; |
| 360 | $noMsg = $spec['noMsg'] ?? null; |
| 361 | $instanceTokenParameterName = $spec['instanceTokenParameterName'] ?? null; |
| 362 | |
| 363 | if ( !$link && !$questions ) { |
| 364 | throw new InvalidArgumentException( |
| 365 | "The \"{$name}\" external survey doesn't have a link." |
| 366 | ); |
| 367 | } |
| 368 | |
| 369 | if ( !$privacyPolicy ) { |
| 370 | throw new InvalidArgumentException( |
| 371 | "The \"{$name}\" external survey doesn't have a privacy policy." |
| 372 | ); |
| 373 | } |
| 374 | |
| 375 | $surveyQuestions = []; |
| 376 | if ( $questions ) { |
| 377 | foreach ( $questions as $surveyQuestion ) { |
| 378 | $surveyQuestions[] = new SurveyQuestion( $surveyQuestion, 'external' ); |
| 379 | } |
| 380 | } |
| 381 | |
| 382 | // Backwards compatibility: Map the deprecated field values to newer |
| 383 | // 'questions' array if they're defined and 'questions' is! |
| 384 | if ( !$surveyQuestions && $question ) { |
| 385 | $surveyQuestions[] = new SurveyQuestion( [ |
| 386 | 'name' => 'question-1', |
| 387 | 'question' => $question, |
| 388 | 'description' => $description, |
| 389 | 'link' => $link, |
| 390 | // Set defaults for yes and no messages for compatibility. |
| 391 | 'yesMsg' => $yesMsg ?? 'ext-quicksurveys-external-survey-yes-button', |
| 392 | 'noMsg' => $noMsg ?? 'ext-quicksurveys-external-survey-no-button', |
| 393 | 'instanceTokenParameterName' => $instanceTokenParameterName, |
| 394 | ], 'external' ); |
| 395 | } |
| 396 | |
| 397 | $survey = new ExternalSurvey( |
| 398 | $name, |
| 399 | $spec['coverage'], |
| 400 | $spec['platforms'], |
| 401 | $spec['privacyPolicy'], |
| 402 | $spec['additionalInfo'] ?? null, |
| 403 | $spec['confirmMsg'] ?? null, |
| 404 | new SurveyAudience( $spec['audience'] ?? [] ), |
| 405 | $surveyQuestions, |
| 406 | $question, |
| 407 | $description, |
| 408 | $spec['confirmDescription'] ?? null, |
| 409 | $link, |
| 410 | $instanceTokenParameterName, |
| 411 | $yesMsg, |
| 412 | $noMsg |
| 413 | ); |
| 414 | $this->validateExternalSurveyQuestions( $survey->toArray() ); |
| 415 | |
| 416 | return $survey; |
| 417 | } |
| 418 | |
| 419 | /** |
| 420 | * @param array $spec |
| 421 | * @throws InvalidArgumentException |
| 422 | * @return InternalSurvey |
| 423 | */ |
| 424 | private function factoryInternal( array $spec ): InternalSurvey { |
| 425 | $name = $spec['name']; |
| 426 | $questions = $spec['questions'] ?? []; |
| 427 | |
| 428 | // Deprecated fields. |
| 429 | $question = $spec['question'] ?? null; |
| 430 | $answers = $spec['answers'] ?? null; |
| 431 | $description = $spec['description'] ?? null; |
| 432 | $layout = $spec['layout'] ?? null; |
| 433 | $shuffleAnswersDisplay = $spec['shuffleAnswersDisplay'] ?? null; |
| 434 | $freeformTextLabel = $spec['freeformTextLabel'] ?? null; |
| 435 | |
| 436 | if ( !$questions && !$answers ) { |
| 437 | throw new InvalidArgumentException( |
| 438 | "The \"{$name}\" internal survey doesn't have any answers." |
| 439 | ); |
| 440 | } |
| 441 | |
| 442 | $surveyQuestions = []; |
| 443 | if ( $questions ) { |
| 444 | foreach ( $questions as $surveyQuestion ) { |
| 445 | $surveyQuestions[] = new SurveyQuestion( $surveyQuestion, 'internal' ); |
| 446 | } |
| 447 | } else { |
| 448 | // Only make the deprecated top-level layout field required if the |
| 449 | // corresponding deprecated question field is in use. |
| 450 | if ( !in_array( $layout, [ 'single-answer', 'multiple-answer' ] ) ) { |
| 451 | throw new InvalidArgumentException( |
| 452 | "The \"{$name}\" internal survey layout is not one of \"single-answer\" or " . |
| 453 | "\"multiple-answer\"." |
| 454 | ); |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | // Backwards compatibility: Map the deprecated field values to newer |
| 459 | // 'questions' array if they're defined and 'questions' is empty. |
| 460 | if ( !$surveyQuestions && $question && $answers ) { |
| 461 | $surveyQuestions[] = new SurveyQuestion( [ |
| 462 | 'name' => 'question-1', |
| 463 | 'layout' => $layout, |
| 464 | 'question' => $question, |
| 465 | 'description' => $description, |
| 466 | 'shuffleAnswersDisplay' => $shuffleAnswersDisplay, |
| 467 | 'answers' => array_map( static fn ( string $answer ): array => [ |
| 468 | 'label' => $answer, |
| 469 | 'freeformTextLabel' => $freeformTextLabel, |
| 470 | ], $answers ), |
| 471 | ], 'internal' ); |
| 472 | } |
| 473 | |
| 474 | $survey = new InternalSurvey( |
| 475 | $name, |
| 476 | $spec['coverage'], |
| 477 | $spec['platforms'], |
| 478 | $spec['privacyPolicy'] ?? null, |
| 479 | $spec['additionalInfo'] ?? null, |
| 480 | $spec['confirmMsg'] ?? null, |
| 481 | new SurveyAudience( $spec['audience'] ?? [] ), |
| 482 | $surveyQuestions, |
| 483 | $question, |
| 484 | $description, |
| 485 | $spec['confirmDescription'] ?? null, |
| 486 | $answers, |
| 487 | $shuffleAnswersDisplay, |
| 488 | $freeformTextLabel, |
| 489 | $spec['embedElementId'] ?? null, |
| 490 | $layout |
| 491 | ); |
| 492 | $this->validateInternalSurveyQuestions( $survey->toArray() ); |
| 493 | |
| 494 | return $survey; |
| 495 | } |
| 496 | } |