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| 1 | <?php |
| 2 | /** |
| 3 | * Attribute mapper between WordPress block attributes and PayPal Pay Links & Buttons API. |
| 4 | * |
| 5 | * Maps a PayPal API response onto block attributes, and validates them before a save. |
| 6 | * The block builds its own request body in utils/request-data.js. |
| 7 | * |
| 8 | * @package automattic/jetpack-paypal-payments |
| 9 | * @since 0.8.0 |
| 10 | */ |
| 11 | |
| 12 | namespace Automattic\Jetpack\PaypalPayments; |
| 13 | |
| 14 | if ( ! defined( 'ABSPATH' ) ) { |
| 15 | exit; |
| 16 | } |
| 17 | |
| 18 | use WP_Error; |
| 19 | |
| 20 | /** |
| 21 | * Class PayPal_Attribute_Mapper |
| 22 | * |
| 23 | * Maps block editor attributes to PayPal API request/response formats. |
| 24 | * Provides validation, sanitization, and transformation for Phase 1 |
| 25 | * (BUY_NOW type, LINK integration mode, single line item). |
| 26 | */ |
| 27 | class PayPal_Attribute_Mapper { |
| 28 | |
| 29 | /** |
| 30 | * Supported currency codes for Phase 1. |
| 31 | * |
| 32 | * PayPal supports many currencies, but we validate against the most common |
| 33 | * to prevent typos. Full list at: |
| 34 | * https://developer.paypal.com/docs/reports/reference/paypal-supported-currencies/ |
| 35 | * |
| 36 | * @var array |
| 37 | */ |
| 38 | const SUPPORTED_CURRENCIES = array( |
| 39 | 'USD', |
| 40 | 'EUR', |
| 41 | 'GBP', |
| 42 | 'CAD', |
| 43 | 'AUD', |
| 44 | 'JPY', |
| 45 | 'CNY', |
| 46 | 'CHF', |
| 47 | 'SEK', |
| 48 | 'NOK', |
| 49 | 'DKK', |
| 50 | 'NZD', |
| 51 | 'SGD', |
| 52 | 'HKD', |
| 53 | 'MXN', |
| 54 | 'BRL', |
| 55 | 'PLN', |
| 56 | 'CZK', |
| 57 | 'HUF', |
| 58 | 'ILS', |
| 59 | 'MYR', |
| 60 | 'PHP', |
| 61 | 'TWD', |
| 62 | 'THB', |
| 63 | ); |
| 64 | |
| 65 | /** |
| 66 | * Maximum number of option groups (variant dimensions) per product. |
| 67 | * |
| 68 | * @since 0.9.0 |
| 69 | * |
| 70 | * @var int |
| 71 | */ |
| 72 | const MAX_VARIANT_DIMENSIONS = 5; |
| 73 | |
| 74 | /** |
| 75 | * Maximum number of options per option group. |
| 76 | * |
| 77 | * @since 0.9.0 |
| 78 | * |
| 79 | * @var int |
| 80 | */ |
| 81 | const MAX_VARIANT_OPTIONS = 10; |
| 82 | |
| 83 | /** |
| 84 | * Maximum product name length. |
| 85 | * |
| 86 | * @var int |
| 87 | */ |
| 88 | const MAX_NAME_LENGTH = 127; |
| 89 | |
| 90 | /** |
| 91 | * Maximum description length. |
| 92 | * |
| 93 | * Anything longer is a 400 `INVALID_STRING_LENGTH` from PayPal. Mirrored in |
| 94 | * `utils/validation.js`; change both together. |
| 95 | * |
| 96 | * @var int |
| 97 | */ |
| 98 | const MAX_DESCRIPTION_LENGTH = 2048; |
| 99 | |
| 100 | /** |
| 101 | * Maximum button text length. |
| 102 | * |
| 103 | * @var int |
| 104 | */ |
| 105 | const MAX_BUTTON_TEXT_LENGTH = 50; |
| 106 | |
| 107 | /** |
| 108 | * Maximum return URL length PayPal accepts. |
| 109 | * |
| 110 | * @var int |
| 111 | */ |
| 112 | const MAX_RETURN_URL_LENGTH = 1024; |
| 113 | |
| 114 | /** |
| 115 | * Maximum product id (SKU) length. |
| 116 | * |
| 117 | * @var int |
| 118 | */ |
| 119 | const MAX_PRODUCT_ID_LENGTH = 50; |
| 120 | |
| 121 | /** |
| 122 | * Keys a GET returns that a PUT must not send back. |
| 123 | * |
| 124 | * `payment_link` is this package's own copy of the HATEOAS link. |
| 125 | * |
| 126 | * @since 0.13.0 |
| 127 | * |
| 128 | * @var string[] |
| 129 | */ |
| 130 | const READ_ONLY_RESOURCE_KEYS = array( |
| 131 | 'id', |
| 132 | 'payment_link', |
| 133 | 'links', |
| 134 | 'create_time', |
| 135 | 'update_time', |
| 136 | 'status', |
| 137 | 'code_snippets', |
| 138 | ); |
| 139 | |
| 140 | /** |
| 141 | * Top-level keys the block edits, so a save clears one it leaves out. |
| 142 | * |
| 143 | * With OWNED_LINE_ITEM_KEYS, these are the keys api_response_to_attributes() reads |
| 144 | * into editable attributes; change the three together. |
| 145 | * |
| 146 | * @since 0.13.0 |
| 147 | * |
| 148 | * @var string[] |
| 149 | */ |
| 150 | const OWNED_RESOURCE_KEYS = array( |
| 151 | 'integration_mode', |
| 152 | 'return_url', |
| 153 | 'line_items', |
| 154 | ); |
| 155 | |
| 156 | /** |
| 157 | * Line item keys the block edits, so a save clears one it leaves out. |
| 158 | * |
| 159 | * `collect_shipping_address` is left off on purpose: PayPal turns address |
| 160 | * collection on for a body without it, so it stays as PayPal had it when not sent. |
| 161 | * |
| 162 | * @since 0.13.0 |
| 163 | * |
| 164 | * @var string[] |
| 165 | */ |
| 166 | const OWNED_LINE_ITEM_KEYS = array( |
| 167 | 'name', |
| 168 | 'unit_amount', |
| 169 | 'description', |
| 170 | 'product_id', |
| 171 | 'variants', |
| 172 | 'adjustable_quantity', |
| 173 | 'customer_notes', |
| 174 | 'taxes', |
| 175 | 'shipping', |
| 176 | 'handling', |
| 177 | 'discounts', |
| 178 | ); |
| 179 | |
| 180 | /** |
| 181 | * Convert block attributes to a PayPal API request body. |
| 182 | * |
| 183 | * Only the tests call this. |
| 184 | * |
| 185 | * @param array $attributes Block attributes from the editor. |
| 186 | * @return array PayPal API request body. |
| 187 | */ |
| 188 | public static function attributes_to_api_request( array $attributes ) { |
| 189 | $line_item = array( |
| 190 | 'name' => sanitize_text_field( $attributes['productName'] ?? '' ), |
| 191 | ); |
| 192 | |
| 193 | // Product variants (dimensions with options). |
| 194 | if ( ! empty( $attributes['variantsEnabled'] ) && ! empty( $attributes['variants']['dimensions'] ) ) { |
| 195 | $line_item['variants'] = self::sanitize_variants( $attributes['variants'] ); |
| 196 | } |
| 197 | |
| 198 | // PayPal errors with "unit_amount is specified at both product level and |
| 199 | // variant level" when both are present, so per-option prices replace the |
| 200 | // product-level price rather than sitting alongside it. |
| 201 | if ( ! self::variants_have_pricing( $line_item['variants'] ?? null ) ) { |
| 202 | $line_item['unit_amount'] = array( |
| 203 | 'currency_code' => sanitize_text_field( $attributes['currencyCode'] ?? 'USD' ), |
| 204 | 'value' => sanitize_text_field( $attributes['price'] ?? '0.00' ), |
| 205 | ); |
| 206 | } |
| 207 | |
| 208 | // Optional line item fields. |
| 209 | if ( ! empty( $attributes['productDescription'] ) ) { |
| 210 | $line_item['description'] = sanitize_text_field( $attributes['productDescription'] ); |
| 211 | } |
| 212 | |
| 213 | // Adjustable quantity. |
| 214 | if ( ! empty( $attributes['adjustableQuantity'] ) && ! empty( $attributes['maxQuantity'] ) ) { |
| 215 | $max = absint( $attributes['maxQuantity'] ); |
| 216 | if ( $max >= 2 ) { |
| 217 | $line_item['adjustable_quantity'] = array( 'maximum' => $max ); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | // Customer notes / custom fields. |
| 222 | if ( ! empty( $attributes['customerNotes'] ) && is_array( $attributes['customerNotes'] ) ) { |
| 223 | $notes = array(); |
| 224 | foreach ( $attributes['customerNotes'] as $note ) { |
| 225 | $label = sanitize_text_field( $note['label'] ?? '' ); |
| 226 | if ( '' !== $label ) { |
| 227 | $notes[] = array( |
| 228 | 'label' => $label, |
| 229 | 'required' => ! empty( $note['required'] ), |
| 230 | ); |
| 231 | } |
| 232 | } |
| 233 | if ( ! empty( $notes ) ) { |
| 234 | $line_item['customer_notes'] = $notes; |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | // Tax configuration. |
| 239 | if ( ! empty( $attributes['taxEnabled'] ) && ! empty( $attributes['taxName'] ) ) { |
| 240 | $tax_type = sanitize_text_field( $attributes['taxType'] ?? 'PERCENTAGE' ); |
| 241 | $tax = array( |
| 242 | 'name' => sanitize_text_field( $attributes['taxName'] ), |
| 243 | 'type' => in_array( $tax_type, array( 'PERCENTAGE', 'PREFERENCE' ), true ) ? $tax_type : 'PERCENTAGE', |
| 244 | ); |
| 245 | |
| 246 | if ( 'PREFERENCE' === $tax_type ) { |
| 247 | $tax['value'] = 'PROFILE'; |
| 248 | } else { |
| 249 | $tax['value'] = sanitize_text_field( $attributes['taxValue'] ?? '0' ); |
| 250 | } |
| 251 | |
| 252 | $line_item['taxes'] = array( $tax ); |
| 253 | } |
| 254 | |
| 255 | // Shipping configuration. |
| 256 | if ( ! empty( $attributes['shippingEnabled'] ) ) { |
| 257 | $shipping_type = sanitize_text_field( $attributes['shippingType'] ?? 'FLAT' ); |
| 258 | |
| 259 | $shipping = array( |
| 260 | 'type' => in_array( $shipping_type, array( 'FLAT', 'PREFERENCE' ), true ) ? $shipping_type : 'FLAT', |
| 261 | ); |
| 262 | |
| 263 | if ( 'PREFERENCE' === $shipping_type ) { |
| 264 | $shipping['value'] = 'PROFILE'; |
| 265 | } else { |
| 266 | $shipping['value'] = sanitize_text_field( $attributes['shippingValue'] ?? '0' ); |
| 267 | } |
| 268 | |
| 269 | $line_item['shipping'] = array( $shipping ); |
| 270 | } |
| 271 | |
| 272 | if ( ! empty( $attributes['collectShippingAddress'] ) ) { |
| 273 | $line_item['collect_shipping_address'] = true; |
| 274 | } |
| 275 | |
| 276 | $request = array( |
| 277 | 'type' => 'BUY_NOW', |
| 278 | 'integration_mode' => 'LINK', |
| 279 | 'reusable' => 'MULTIPLE', |
| 280 | 'line_items' => array( $line_item ), |
| 281 | ); |
| 282 | |
| 283 | // Optional top-level fields. |
| 284 | if ( ! empty( $attributes['returnUrl'] ) ) { |
| 285 | $request['return_url'] = esc_url_raw( $attributes['returnUrl'] ); |
| 286 | } |
| 287 | |
| 288 | return $request; |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * Convert a PayPal API response to block attributes. |
| 293 | * |
| 294 | * Extracts the relevant fields from the PayPal API response and maps |
| 295 | * them to the flat attribute structure used by the block editor. |
| 296 | * |
| 297 | * @param array $response PayPal API response body (decoded JSON). |
| 298 | * @return array Block attributes to store. |
| 299 | */ |
| 300 | public static function api_response_to_attributes( array $response ) { |
| 301 | $attributes = array( |
| 302 | 'isApiManaged' => true, |
| 303 | 'resourceId' => sanitize_text_field( $response['id'] ?? '' ), |
| 304 | 'paymentLink' => esc_url_raw( $response['payment_link'] ?? '' ), |
| 305 | ); |
| 306 | |
| 307 | // Extract first line item details. |
| 308 | if ( ! empty( $response['line_items'] ) && is_array( $response['line_items'] ) ) { |
| 309 | $line_item = $response['line_items'][0]; |
| 310 | |
| 311 | $attributes['productName'] = sanitize_text_field( $line_item['name'] ?? '' ); |
| 312 | |
| 313 | if ( isset( $line_item['unit_amount'] ) && is_array( $line_item['unit_amount'] ) ) { |
| 314 | $attributes['currencyCode'] = sanitize_text_field( $line_item['unit_amount']['currency_code'] ?? 'USD' ); |
| 315 | $attributes['price'] = sanitize_text_field( $line_item['unit_amount']['value'] ?? '0.00' ); |
| 316 | } |
| 317 | |
| 318 | if ( ! empty( $line_item['description'] ) ) { |
| 319 | // Keep the line breaks PayPal sent back - sanitize_text_field() flattens them. |
| 320 | $attributes['productDescription'] = sanitize_textarea_field( $line_item['description'] ); |
| 321 | } |
| 322 | |
| 323 | if ( isset( $line_item['product_id'] ) && '' !== $line_item['product_id'] ) { |
| 324 | $attributes['productId'] = sanitize_text_field( $line_item['product_id'] ); |
| 325 | } |
| 326 | |
| 327 | if ( ! empty( $line_item['variants']['dimensions'] ) ) { |
| 328 | $attributes['variantsEnabled'] = true; |
| 329 | $attributes['variants'] = $line_item['variants']; |
| 330 | |
| 331 | // With per-option pricing the currency lives on the options. |
| 332 | if ( ! isset( $attributes['currencyCode'] ) ) { |
| 333 | $variant_currency = self::get_variant_currency( $line_item['variants'] ); |
| 334 | if ( null !== $variant_currency ) { |
| 335 | $attributes['currencyCode'] = $variant_currency; |
| 336 | } |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | // Adjustable quantity. |
| 341 | if ( ! empty( $line_item['adjustable_quantity']['maximum'] ) ) { |
| 342 | $attributes['adjustableQuantity'] = true; |
| 343 | $attributes['maxQuantity'] = absint( $line_item['adjustable_quantity']['maximum'] ); |
| 344 | } |
| 345 | |
| 346 | // Customer notes. |
| 347 | if ( ! empty( $line_item['customer_notes'] ) && is_array( $line_item['customer_notes'] ) ) { |
| 348 | $attributes['customerNotes'] = array_map( |
| 349 | function ( $note ) { |
| 350 | return array( |
| 351 | 'label' => sanitize_text_field( $note['label'] ?? '' ), |
| 352 | 'required' => ! empty( $note['required'] ), |
| 353 | ); |
| 354 | }, |
| 355 | $line_item['customer_notes'] |
| 356 | ); |
| 357 | } |
| 358 | |
| 359 | // Tax configuration. |
| 360 | if ( ! empty( $line_item['taxes'] ) && is_array( $line_item['taxes'] ) ) { |
| 361 | $tax = $line_item['taxes'][0]; |
| 362 | $attributes['taxEnabled'] = true; |
| 363 | $attributes['taxName'] = sanitize_text_field( $tax['name'] ?? 'Sales Tax' ); |
| 364 | $attributes['taxType'] = sanitize_text_field( $tax['type'] ?? 'PERCENTAGE' ); |
| 365 | $attributes['taxValue'] = 'PREFERENCE' === $attributes['taxType'] ? '' : sanitize_text_field( $tax['value'] ?? '' ); |
| 366 | } |
| 367 | |
| 368 | // Shipping configuration. PayPal stores a type and a value, so the |
| 369 | // block's mode comes from both. |
| 370 | if ( ! empty( $line_item['shipping'] ) && is_array( $line_item['shipping'] ) ) { |
| 371 | $shipping = $line_item['shipping'][0]; |
| 372 | $type = sanitize_text_field( $shipping['type'] ?? 'FLAT' ); |
| 373 | $value = sanitize_text_field( $shipping['value'] ?? '' ); |
| 374 | $extra = sanitize_text_field( $shipping['additional_unit_value'] ?? '' ); |
| 375 | |
| 376 | $attributes['shippingEnabled'] = true; |
| 377 | |
| 378 | if ( 'PREFERENCE' === $type ) { |
| 379 | // `value` tells PROFILE from FREE_SHIPPING. Both modes hide the fee |
| 380 | // field, so clear it. |
| 381 | $attributes['shippingMode'] = 'FREE_SHIPPING' === $value ? 'FREE' : 'PROFILE'; |
| 382 | $attributes['shippingValue'] = ''; |
| 383 | } else { |
| 384 | // `additional_unit_value` tells QUANTITY from FLAT, so a quantity fee |
| 385 | // that left it blank reads back as FLAT. Same charge either way. |
| 386 | $attributes['shippingMode'] = '' !== $extra ? 'QUANTITY' : 'FLAT'; |
| 387 | $attributes['shippingValue'] = $value; |
| 388 | if ( '' !== $extra ) { |
| 389 | $attributes['shippingAdditionalValue'] = $extra; |
| 390 | } |
| 391 | } |
| 392 | } |
| 393 | |
| 394 | // Handling fee. The type is always FLAT, so the amount is all that comes back. |
| 395 | if ( ! empty( $line_item['handling'] ) && is_array( $line_item['handling'] ) ) { |
| 396 | $handling = $line_item['handling'][0]; |
| 397 | $attributes['handlingEnabled'] = true; |
| 398 | $attributes['handlingValue'] = sanitize_text_field( $handling['value'] ?? '' ); |
| 399 | } |
| 400 | |
| 401 | // Discount. Store the type as PayPal sent it so a type set in PayPal's |
| 402 | // dashboard survives a save from the block. |
| 403 | if ( ! empty( $line_item['discounts'] ) && is_array( $line_item['discounts'] ) ) { |
| 404 | $discount = $line_item['discounts'][0] ?? null; |
| 405 | if ( is_array( $discount ) ) { |
| 406 | $attributes['discountEnabled'] = true; |
| 407 | $attributes['discountType'] = sanitize_text_field( $discount['type'] ?? 'FLAT' ); |
| 408 | $attributes['discountValue'] = sanitize_text_field( $discount['value'] ?? '' ); |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | // The payment is the source of truth, so an absent key reads as off. |
| 413 | $attributes['collectShippingAddress'] = ! empty( $line_item['collect_shipping_address'] ); |
| 414 | } |
| 415 | |
| 416 | // Extract return_url if present. |
| 417 | if ( ! empty( $response['return_url'] ) ) { |
| 418 | $attributes['returnUrl'] = esc_url_raw( $response['return_url'] ); |
| 419 | } |
| 420 | |
| 421 | // Extract payment_link from HATEOAS links if not in top-level field. |
| 422 | if ( empty( $attributes['paymentLink'] ) && ! empty( $response['links'] ) && is_array( $response['links'] ) ) { |
| 423 | foreach ( $response['links'] as $link ) { |
| 424 | if ( isset( $link['rel'] ) && 'payment_link' === $link['rel'] && ! empty( $link['href'] ) ) { |
| 425 | $attributes['paymentLink'] = esc_url_raw( $link['href'] ); |
| 426 | break; |
| 427 | } |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | // The payment's own mode, so a LINK or QR block re-sends it instead of downgrading |
| 432 | // a stacked payment. Anything outside the REST enum becomes '', since storing it |
| 433 | // would 400 every later save. |
| 434 | $mode = sanitize_text_field( $response['integration_mode'] ?? '' ); |
| 435 | $attributes['integrationMode'] = in_array( $mode, array( 'LINK', 'BUTTON' ), true ) ? $mode : ''; |
| 436 | |
| 437 | // The SDK URL the stacked format draws with. Only a BUTTON-mode payment has |
| 438 | // code_snippets, so LINK mode gives ''. |
| 439 | $attributes['scriptSrc'] = self::extract_script_src( $response ); |
| 440 | |
| 441 | return $attributes; |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * Lay a block's request body over the payment as PayPal holds it. |
| 446 | * |
| 447 | * A PUT replaces the whole payment, so a key the block does not model is lost |
| 448 | * unless it is carried over from a GET. Owned keys are last-write-wins: set when |
| 449 | * the body has them, dropped when it does not, since leaving one out is how a PUT |
| 450 | * clears it. Line items merge per index, so a second item PayPal holds survives. |
| 451 | * |
| 452 | * @since 0.13.0 |
| 453 | * |
| 454 | * @param array $current The payment as a GET returned it. |
| 455 | * @param array $update The body built from the block. |
| 456 | * @return array The body to PUT. |
| 457 | */ |
| 458 | public static function merge_into_resource( array $current, array $update ) { |
| 459 | $merged = array_diff_key( |
| 460 | $current, |
| 461 | array_flip( self::READ_ONLY_RESOURCE_KEYS ), |
| 462 | array_flip( self::OWNED_RESOURCE_KEYS ) |
| 463 | ); |
| 464 | |
| 465 | $current_items = isset( $current['line_items'] ) && is_array( $current['line_items'] ) |
| 466 | ? $current['line_items'] |
| 467 | : array(); |
| 468 | |
| 469 | foreach ( $update as $key => $value ) { |
| 470 | if ( 'line_items' === $key ) { |
| 471 | continue; |
| 472 | } |
| 473 | $merged[ $key ] = $value; |
| 474 | } |
| 475 | |
| 476 | if ( isset( $update['line_items'] ) && is_array( $update['line_items'] ) ) { |
| 477 | $merged['line_items'] = $current_items; |
| 478 | foreach ( $update['line_items'] as $index => $item ) { |
| 479 | $current_item = isset( $current_items[ $index ] ) && is_array( $current_items[ $index ] ) |
| 480 | ? $current_items[ $index ] |
| 481 | : array(); |
| 482 | |
| 483 | $merged['line_items'][ $index ] = array_merge( |
| 484 | array_diff_key( $current_item, array_flip( self::OWNED_LINE_ITEM_KEYS ) ), |
| 485 | $item |
| 486 | ); |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | return $merged; |
| 491 | } |
| 492 | |
| 493 | /** |
| 494 | * Extract the PayPal SDK URL from a payment's stacked code snippet. |
| 495 | * |
| 496 | * PayPal returns a snippet per framework; the HTML one has a plain `<script src="…">`. |
| 497 | * The URL includes the merchant's client-id and currency, so it has to be read back. |
| 498 | * |
| 499 | * @param array $response The payment resource from the API. |
| 500 | * @return string The sanitized SDK URL, or '' when there is none. |
| 501 | */ |
| 502 | private static function extract_script_src( array $response ) { |
| 503 | $snippets = $response['code_snippets']['stacked'] ?? null; |
| 504 | if ( ! is_array( $snippets ) ) { |
| 505 | return ''; |
| 506 | } |
| 507 | |
| 508 | foreach ( $snippets as $snippet ) { |
| 509 | if ( ! is_array( $snippet ) || 'HTML' !== ( $snippet['framework'] ?? '' ) ) { |
| 510 | continue; |
| 511 | } |
| 512 | |
| 513 | // Match on the script tag: the first `src=` in PayPal's snippet may belong |
| 514 | // to something else. |
| 515 | if ( ! preg_match( '/<script[^>]+src=[\'"]([^\'"]+)[\'"]/i', (string) ( $snippet['head'] ?? '' ), $matches ) ) { |
| 516 | continue; |
| 517 | } |
| 518 | |
| 519 | $url = PayPal_Payment_Buttons::sanitize_paypal_script_url( |
| 520 | html_entity_decode( $matches[1], ENT_QUOTES | ENT_HTML5, 'UTF-8' ) |
| 521 | ); |
| 522 | |
| 523 | return false === $url ? '' : $url; |
| 524 | } |
| 525 | |
| 526 | return ''; |
| 527 | } |
| 528 | |
| 529 | /** |
| 530 | * Validate block attributes before sending to the PayPal API. |
| 531 | * |
| 532 | * Checks required fields, format constraints, and business rules. |
| 533 | * Returns WP_Error on failure with specific error codes for each validation issue. |
| 534 | * |
| 535 | * @param array $attributes Block attributes to validate. |
| 536 | * @return true|WP_Error True if valid, WP_Error with details on failure. |
| 537 | */ |
| 538 | public static function validate_attributes( array $attributes ) { |
| 539 | // trim() throws on an array, so only a string counts as a name. |
| 540 | $product_name = is_string( $attributes['productName'] ?? null ) ? $attributes['productName'] : ''; |
| 541 | |
| 542 | // Required: product name (reject empty and whitespace-only). |
| 543 | if ( empty( $product_name ) || '' === trim( $product_name ) ) { |
| 544 | return new WP_Error( |
| 545 | 'missing_product_name', |
| 546 | __( 'Product name is required.', 'jetpack-paypal-payments' ), |
| 547 | array( 'status' => 400 ) |
| 548 | ); |
| 549 | } |
| 550 | |
| 551 | if ( mb_strlen( sanitize_text_field( $product_name ) ) > self::MAX_NAME_LENGTH ) { |
| 552 | return new WP_Error( |
| 553 | 'product_name_too_long', |
| 554 | /* translators: %d: maximum allowed characters */ |
| 555 | sprintf( __( 'Product name must be %d characters or fewer.', 'jetpack-paypal-payments' ), self::MAX_NAME_LENGTH ), |
| 556 | array( 'status' => 400 ) |
| 557 | ); |
| 558 | } |
| 559 | |
| 560 | // Anything sanitize_variants() would drop must be rejected here instead, |
| 561 | // or the pricing checks below run against options PayPal never receives. |
| 562 | if ( ! empty( $attributes['variantsEnabled'] ) && ! empty( $attributes['variants']['dimensions'] ) ) { |
| 563 | $variant_structure_error = self::validate_variant_structure( $attributes['variants'] ); |
| 564 | if ( is_wp_error( $variant_structure_error ) ) { |
| 565 | return $variant_structure_error; |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | // Required: price — unless the product options carry their own prices, |
| 570 | // in which case PayPal takes the amount from the options instead. |
| 571 | $uses_variant_pricing = ! empty( $attributes['variantsEnabled'] ) |
| 572 | && self::variants_have_pricing( $attributes['variants'] ?? null ); |
| 573 | |
| 574 | $has_price = isset( $attributes['price'] ) && '' !== $attributes['price']; |
| 575 | |
| 576 | if ( ! $has_price && ! $uses_variant_pricing ) { |
| 577 | return new WP_Error( |
| 578 | 'missing_price', |
| 579 | __( 'Price is required.', 'jetpack-paypal-payments' ), |
| 580 | array( 'status' => 400 ) |
| 581 | ); |
| 582 | } |
| 583 | |
| 584 | // The currency decides how many decimals a price may carry, so the |
| 585 | // price checks need it before it is itself validated below. |
| 586 | $currency = strtoupper( sanitize_text_field( (string) ( $attributes['currencyCode'] ?? 'USD' ) ) ); |
| 587 | |
| 588 | if ( $has_price && ! self::is_valid_price( $attributes['price'], $currency ) ) { |
| 589 | return new WP_Error( |
| 590 | 'invalid_price', |
| 591 | self::get_invalid_price_message( $currency ), |
| 592 | array( 'status' => 400 ) |
| 593 | ); |
| 594 | } |
| 595 | |
| 596 | if ( $uses_variant_pricing ) { |
| 597 | $variant_price_error = self::validate_variant_pricing( $attributes['variants'], $currency ); |
| 598 | if ( is_wp_error( $variant_price_error ) ) { |
| 599 | return $variant_price_error; |
| 600 | } |
| 601 | } |
| 602 | |
| 603 | // Required: currency code. |
| 604 | if ( ! in_array( $currency, self::SUPPORTED_CURRENCIES, true ) ) { |
| 605 | return new WP_Error( |
| 606 | 'invalid_currency', |
| 607 | __( 'Unsupported currency code.', 'jetpack-paypal-payments' ), |
| 608 | array( 'status' => 400 ) |
| 609 | ); |
| 610 | } |
| 611 | |
| 612 | // Optional: description length. |
| 613 | if ( ! empty( $attributes['productDescription'] ) ) { |
| 614 | // Count it as the merchant wrote it - sanitize_text_field() collapses |
| 615 | // newlines, so a long description measures short. |
| 616 | $description = sanitize_textarea_field( $attributes['productDescription'] ); |
| 617 | if ( mb_strlen( $description ) > self::MAX_DESCRIPTION_LENGTH ) { |
| 618 | return new WP_Error( |
| 619 | 'description_too_long', |
| 620 | /* translators: %d: maximum allowed characters */ |
| 621 | sprintf( __( 'Description must be %d characters or fewer.', 'jetpack-paypal-payments' ), self::MAX_DESCRIPTION_LENGTH ), |
| 622 | array( 'status' => 400 ) |
| 623 | ); |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | // Optional: product id length. |
| 628 | if ( ! empty( $attributes['productId'] ) ) { |
| 629 | $product_id = sanitize_text_field( $attributes['productId'] ); |
| 630 | if ( mb_strlen( $product_id ) > self::MAX_PRODUCT_ID_LENGTH ) { |
| 631 | return new WP_Error( |
| 632 | 'product_id_too_long', |
| 633 | /* translators: %d: maximum allowed characters */ |
| 634 | sprintf( __( 'Product ID must be %d characters or fewer.', 'jetpack-paypal-payments' ), self::MAX_PRODUCT_ID_LENGTH ), |
| 635 | array( 'status' => 400 ) |
| 636 | ); |
| 637 | } |
| 638 | } |
| 639 | |
| 640 | // Optional: button text length. |
| 641 | if ( ! empty( $attributes['buttonText'] ) ) { |
| 642 | $button_text = sanitize_text_field( $attributes['buttonText'] ); |
| 643 | if ( mb_strlen( $button_text ) > self::MAX_BUTTON_TEXT_LENGTH ) { |
| 644 | return new WP_Error( |
| 645 | 'button_text_too_long', |
| 646 | /* translators: %d: maximum allowed characters */ |
| 647 | sprintf( __( 'Button text must be %d characters or fewer.', 'jetpack-paypal-payments' ), self::MAX_BUTTON_TEXT_LENGTH ), |
| 648 | array( 'status' => 400 ) |
| 649 | ); |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | // Optional: return URL validation. |
| 654 | if ( ! empty( $attributes['returnUrl'] ) ) { |
| 655 | $return_url = esc_url_raw( $attributes['returnUrl'] ); |
| 656 | // wp_http_validate_url() accepts `//example.com`, so check the scheme as well. |
| 657 | if ( empty( $return_url ) || ! wp_http_validate_url( $return_url ) || ! preg_match( '#^https?://#', $return_url ) ) { |
| 658 | return new WP_Error( |
| 659 | 'invalid_return_url', |
| 660 | __( 'Return URL must be a valid URL.', 'jetpack-paypal-payments' ), |
| 661 | array( 'status' => 400 ) |
| 662 | ); |
| 663 | } |
| 664 | if ( mb_strlen( $return_url ) > self::MAX_RETURN_URL_LENGTH ) { |
| 665 | return new WP_Error( |
| 666 | 'return_url_too_long', |
| 667 | /* translators: %d: maximum allowed characters */ |
| 668 | sprintf( __( 'Return URL must be %d characters or fewer.', 'jetpack-paypal-payments' ), self::MAX_RETURN_URL_LENGTH ), |
| 669 | array( 'status' => 400 ) |
| 670 | ); |
| 671 | } |
| 672 | } |
| 673 | |
| 674 | return true; |
| 675 | } |
| 676 | |
| 677 | /** |
| 678 | * Validate a resource ID format (PLB-XXXXXXXXXXXX). |
| 679 | * |
| 680 | * @param string $resource_id The resource ID to validate. |
| 681 | * @return bool True if valid format. |
| 682 | */ |
| 683 | public static function is_valid_resource_id( $resource_id ) { |
| 684 | return (bool) preg_match( '/^PLB-[A-Za-z0-9]+$/', $resource_id ); |
| 685 | } |
| 686 | |
| 687 | /** |
| 688 | * Check whether block attributes indicate a V2 API-managed block. |
| 689 | * |
| 690 | * @param array $attributes Block attributes. |
| 691 | * @return bool True if the block is managed via the PayPal API (V2). |
| 692 | */ |
| 693 | public static function is_api_managed( array $attributes ) { |
| 694 | return ! empty( $attributes['isApiManaged'] ) && true === $attributes['isApiManaged']; |
| 695 | } |
| 696 | |
| 697 | /** |
| 698 | * Merge API response attributes into existing block attributes. |
| 699 | * |
| 700 | * After a create or update API call, merge the response data back |
| 701 | * into the block attributes without overwriting frontend-only fields |
| 702 | * like buttonText and buttonType. |
| 703 | * |
| 704 | * @param array $existing_attributes Current block attributes. |
| 705 | * @param array $response_attributes Attributes extracted from API response. |
| 706 | * @return array Merged attributes. |
| 707 | */ |
| 708 | public static function merge_response_attributes( array $existing_attributes, array $response_attributes ) { |
| 709 | // Frontend-only fields that should not be overwritten by API response. |
| 710 | $preserve_keys = array( 'buttonText', 'buttonType' ); |
| 711 | |
| 712 | $merged = array_merge( $existing_attributes, $response_attributes ); |
| 713 | |
| 714 | // Restore preserved frontend-only values. |
| 715 | foreach ( $preserve_keys as $key ) { |
| 716 | if ( isset( $existing_attributes[ $key ] ) ) { |
| 717 | $merged[ $key ] = $existing_attributes[ $key ]; |
| 718 | } |
| 719 | } |
| 720 | |
| 721 | return $merged; |
| 722 | } |
| 723 | |
| 724 | /** |
| 725 | * Whether PayPal prices a currency without decimals. |
| 726 | * |
| 727 | * PayPal rejects a decimal amount in these currencies outright rather than |
| 728 | * rounding it. The legacy currency table already records which they are. |
| 729 | * |
| 730 | * @since 0.9.0 |
| 731 | * |
| 732 | * @param string $currency ISO currency code. |
| 733 | * @return bool True for JPY, HUF and TWD. |
| 734 | */ |
| 735 | public static function is_zero_decimal_currency( $currency ) { |
| 736 | $currency = strtoupper( (string) $currency ); |
| 737 | |
| 738 | return in_array( $currency, self::SUPPORTED_CURRENCIES, true ) |
| 739 | && isset( \PayPal_Payments_Currencies::CURRENCIES[ $currency ]['decimal'] ) |
| 740 | && 0 === \PayPal_Payments_Currencies::CURRENCIES[ $currency ]['decimal']; |
| 741 | } |
| 742 | |
| 743 | /** |
| 744 | * The message for a price PayPal would not accept in the given currency. |
| 745 | * |
| 746 | * @since 0.9.0 |
| 747 | * |
| 748 | * @param string $currency ISO currency code. |
| 749 | * @return string Translated message. |
| 750 | */ |
| 751 | private static function get_invalid_price_message( $currency ) { |
| 752 | if ( self::is_zero_decimal_currency( $currency ) ) { |
| 753 | /* translators: %s: currency code, e.g. JPY */ |
| 754 | return sprintf( __( 'Prices in %s must be whole numbers (e.g., "1500").', 'jetpack-paypal-payments' ), $currency ); |
| 755 | } |
| 756 | |
| 757 | return __( 'Price must be a valid positive number (e.g., "29.99").', 'jetpack-paypal-payments' ); |
| 758 | } |
| 759 | |
| 760 | /** |
| 761 | * Validate a price string. |
| 762 | * |
| 763 | * The price must be a positive number with at most two decimal places, or |
| 764 | * a whole number in a currency PayPal prices without decimals. PayPal |
| 765 | * requires string format prices like "29.99". |
| 766 | * |
| 767 | * @param string $price The price string to validate. |
| 768 | * @param string $currency ISO currency code the price is in. |
| 769 | * @return bool True if valid. |
| 770 | */ |
| 771 | private static function is_valid_price( $price, $currency = 'USD' ) { |
| 772 | // Must be a string representation of a positive decimal number. |
| 773 | if ( ! is_string( $price ) && ! is_numeric( $price ) ) { |
| 774 | return false; |
| 775 | } |
| 776 | |
| 777 | $price = (string) $price; |
| 778 | |
| 779 | $pattern = self::is_zero_decimal_currency( $currency ) ? '/^\d+$/' : '/^\d+(\.\d{1,2})?$/'; |
| 780 | if ( ! preg_match( $pattern, $price ) ) { |
| 781 | return false; |
| 782 | } |
| 783 | |
| 784 | // Must be greater than zero. |
| 785 | if ( (float) $price <= 0 ) { |
| 786 | return false; |
| 787 | } |
| 788 | |
| 789 | return true; |
| 790 | } |
| 791 | |
| 792 | /** |
| 793 | * Find the currency the per-option prices are in. |
| 794 | * |
| 795 | * @since 0.9.0 |
| 796 | * |
| 797 | * @param array|null $variants Variants structure (block or API shape). |
| 798 | * @return string|null The first priced option's currency code, or null when none is priced. |
| 799 | */ |
| 800 | private static function get_variant_currency( $variants ) { |
| 801 | foreach ( ( $variants['dimensions'] ?? array() ) as $dimension ) { |
| 802 | foreach ( ( $dimension['options'] ?? array() ) as $option ) { |
| 803 | if ( ! empty( $option['unit_amount']['currency_code'] ) ) { |
| 804 | return sanitize_text_field( $option['unit_amount']['currency_code'] ); |
| 805 | } |
| 806 | } |
| 807 | } |
| 808 | |
| 809 | return null; |
| 810 | } |
| 811 | |
| 812 | /** |
| 813 | * Whether a variants structure carries per-option pricing. |
| 814 | * |
| 815 | * PayPal rejects a line item that specifies `unit_amount` at both the |
| 816 | * product level and the variant level, so the two are mutually exclusive. |
| 817 | * Once any option in the primary dimension has its own amount, the |
| 818 | * product-level amount must be omitted. |
| 819 | * |
| 820 | * @since 0.9.0 |
| 821 | * |
| 822 | * @param array|null $variants Variants structure (block or API shape). |
| 823 | * @return bool True when at least one option carries its own amount. |
| 824 | */ |
| 825 | public static function variants_have_pricing( $variants ) { |
| 826 | if ( empty( $variants['dimensions'] ) || ! is_array( $variants['dimensions'] ) ) { |
| 827 | return false; |
| 828 | } |
| 829 | |
| 830 | foreach ( $variants['dimensions'] as $dimension ) { |
| 831 | if ( empty( $dimension['primary'] ) || empty( $dimension['options'] ) || ! is_array( $dimension['options'] ) ) { |
| 832 | continue; |
| 833 | } |
| 834 | |
| 835 | foreach ( $dimension['options'] as $option ) { |
| 836 | if ( '' !== trim( (string) ( $option['unit_amount']['value'] ?? '' ) ) ) { |
| 837 | return true; |
| 838 | } |
| 839 | } |
| 840 | } |
| 841 | |
| 842 | return false; |
| 843 | } |
| 844 | |
| 845 | /** |
| 846 | * Validate the shape of a variants structure. |
| 847 | * |
| 848 | * Checks group and option names and counts. validate_variant_pricing() covers the amounts. |
| 849 | * |
| 850 | * @since 0.9.0 |
| 851 | * |
| 852 | * @param array $variants Variants structure (block or API shape). |
| 853 | * @return true|WP_Error True when valid, WP_Error otherwise. |
| 854 | */ |
| 855 | private static function validate_variant_structure( array $variants ) { |
| 856 | $dimensions = $variants['dimensions'] ?? array(); |
| 857 | |
| 858 | if ( ! is_array( $dimensions ) || count( $dimensions ) > self::MAX_VARIANT_DIMENSIONS ) { |
| 859 | return new WP_Error( |
| 860 | 'too_many_variant_dimensions', |
| 861 | /* translators: %d: maximum number of option groups */ |
| 862 | sprintf( __( 'A product can have at most %d option groups.', 'jetpack-paypal-payments' ), self::MAX_VARIANT_DIMENSIONS ), |
| 863 | array( 'status' => 400 ) |
| 864 | ); |
| 865 | } |
| 866 | |
| 867 | foreach ( $dimensions as $dimension ) { |
| 868 | if ( ! is_array( $dimension ) || '' === trim( sanitize_text_field( (string) ( $dimension['name'] ?? '' ) ) ) ) { |
| 869 | return new WP_Error( |
| 870 | 'missing_variant_name', |
| 871 | __( 'Every option group needs a name.', 'jetpack-paypal-payments' ), |
| 872 | array( 'status' => 400 ) |
| 873 | ); |
| 874 | } |
| 875 | |
| 876 | $options = $dimension['options'] ?? array(); |
| 877 | if ( ! is_array( $options ) || count( $options ) > self::MAX_VARIANT_OPTIONS ) { |
| 878 | return new WP_Error( |
| 879 | 'too_many_variant_options', |
| 880 | /* translators: %d: maximum number of options per group */ |
| 881 | sprintf( __( 'An option group can have at most %d options.', 'jetpack-paypal-payments' ), self::MAX_VARIANT_OPTIONS ), |
| 882 | array( 'status' => 400 ) |
| 883 | ); |
| 884 | } |
| 885 | |
| 886 | foreach ( $options as $option ) { |
| 887 | if ( ! is_array( $option ) || '' === trim( sanitize_text_field( (string) ( $option['label'] ?? '' ) ) ) ) { |
| 888 | return new WP_Error( |
| 889 | 'missing_variant_label', |
| 890 | __( 'Every product option needs a label.', 'jetpack-paypal-payments' ), |
| 891 | array( 'status' => 400 ) |
| 892 | ); |
| 893 | } |
| 894 | } |
| 895 | } |
| 896 | |
| 897 | return true; |
| 898 | } |
| 899 | |
| 900 | /** |
| 901 | * Validate per-option pricing. |
| 902 | * |
| 903 | * Per-option prices replace the product-level price, so they are |
| 904 | * all-or-nothing: every option in the primary dimension must carry a |
| 905 | * valid amount once any of them does. |
| 906 | * |
| 907 | * @since 0.9.0 |
| 908 | * |
| 909 | * @param array|null $variants Variants structure (block or API shape). |
| 910 | * @param string $currency ISO currency code the option prices are in. |
| 911 | * @return true|WP_Error True when valid, WP_Error otherwise. |
| 912 | */ |
| 913 | private static function validate_variant_pricing( $variants, $currency = 'USD' ) { |
| 914 | foreach ( ( $variants['dimensions'] ?? array() ) as $dimension ) { |
| 915 | if ( empty( $dimension['primary'] ) ) { |
| 916 | continue; |
| 917 | } |
| 918 | |
| 919 | foreach ( ( $dimension['options'] ?? array() ) as $option ) { |
| 920 | $value = trim( (string) ( $option['unit_amount']['value'] ?? '' ) ); |
| 921 | |
| 922 | if ( '' === $value ) { |
| 923 | return new WP_Error( |
| 924 | 'missing_variant_price', |
| 925 | __( 'Every product option must have a price when any option in the group has one.', 'jetpack-paypal-payments' ), |
| 926 | array( 'status' => 400 ) |
| 927 | ); |
| 928 | } |
| 929 | |
| 930 | if ( ! self::is_valid_price( $value, $currency ) ) { |
| 931 | if ( self::is_zero_decimal_currency( $currency ) ) { |
| 932 | /* translators: %s: currency code, e.g. JPY */ |
| 933 | $message = sprintf( __( 'Product option prices in %s must be whole numbers (e.g., "1500").', 'jetpack-paypal-payments' ), $currency ); |
| 934 | } else { |
| 935 | $message = __( 'Product option prices must be valid positive numbers (e.g., "29.99").', 'jetpack-paypal-payments' ); |
| 936 | } |
| 937 | |
| 938 | return new WP_Error( 'invalid_variant_price', $message, array( 'status' => 400 ) ); |
| 939 | } |
| 940 | } |
| 941 | } |
| 942 | |
| 943 | return true; |
| 944 | } |
| 945 | |
| 946 | /** |
| 947 | * Sanitize and validate a variants structure for the PayPal API. |
| 948 | * |
| 949 | * Enforces: max 5 dimensions, max 10 options per dimension, |
| 950 | * only the primary dimension may have per-option pricing. |
| 951 | * |
| 952 | * @param array $variants Raw variants from block attributes. |
| 953 | * @return array Sanitized variants ready for the API. |
| 954 | */ |
| 955 | private static function sanitize_variants( array $variants ) { |
| 956 | if ( empty( $variants['dimensions'] ) || ! is_array( $variants['dimensions'] ) ) { |
| 957 | return array( 'dimensions' => array() ); |
| 958 | } |
| 959 | |
| 960 | $sanitized_dimensions = array(); |
| 961 | $count = 0; |
| 962 | |
| 963 | foreach ( $variants['dimensions'] as $dimension ) { |
| 964 | if ( ++$count > self::MAX_VARIANT_DIMENSIONS ) { |
| 965 | break; |
| 966 | } |
| 967 | |
| 968 | $dim = array( |
| 969 | 'name' => sanitize_text_field( $dimension['name'] ?? '' ), |
| 970 | 'primary' => ! empty( $dimension['primary'] ), |
| 971 | 'options' => array(), |
| 972 | ); |
| 973 | |
| 974 | if ( empty( $dim['name'] ) ) { |
| 975 | continue; |
| 976 | } |
| 977 | |
| 978 | $option_count = 0; |
| 979 | foreach ( ( $dimension['options'] ?? array() ) as $option ) { |
| 980 | if ( ++$option_count > self::MAX_VARIANT_OPTIONS ) { |
| 981 | break; |
| 982 | } |
| 983 | |
| 984 | $opt = array( |
| 985 | 'label' => sanitize_text_field( $option['label'] ?? '' ), |
| 986 | ); |
| 987 | |
| 988 | if ( empty( $opt['label'] ) ) { |
| 989 | continue; |
| 990 | } |
| 991 | |
| 992 | // Only the primary dimension can have per-option pricing, and an |
| 993 | // empty value is "no price" rather than a price of nothing. |
| 994 | if ( $dim['primary'] && ! empty( $option['unit_amount'] ) && is_array( $option['unit_amount'] ) ) { |
| 995 | $value = trim( sanitize_text_field( (string) ( $option['unit_amount']['value'] ?? '' ) ) ); |
| 996 | if ( '' !== $value ) { |
| 997 | $opt['unit_amount'] = array( |
| 998 | 'currency_code' => sanitize_text_field( $option['unit_amount']['currency_code'] ?? 'USD' ), |
| 999 | 'value' => $value, |
| 1000 | ); |
| 1001 | } |
| 1002 | } |
| 1003 | |
| 1004 | $dim['options'][] = $opt; |
| 1005 | } |
| 1006 | |
| 1007 | if ( ! empty( $dim['options'] ) ) { |
| 1008 | $sanitized_dimensions[] = $dim; |
| 1009 | } |
| 1010 | } |
| 1011 | |
| 1012 | return array( 'dimensions' => $sanitized_dimensions ); |
| 1013 | } |
| 1014 | } |