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<?php |
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/** |
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* Field Validation Class |
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* |
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* Handles field validation for SureDonation forms. |
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* Stores block configuration on form save and retrieves it for validation. |
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* |
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* @package SureDonation |
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* @since 0.0.1 |
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*/ |
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|
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namespace SureDonation\Inc; |
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|
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; // Exit if accessed directly. |
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} |
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|
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/** |
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* Field Validation Class |
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*/ |
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class Field_Validation { |
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/** |
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* Meta key for storing block configuration. |
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* |
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* @since 0.0.1 |
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*/ |
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public const BLOCK_CONFIG_META_KEY = '_suredonation_block_config'; |
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|
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/** |
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* Add block configuration for form fields. |
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* |
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* This function processes blocks in a form and stores their configuration as post meta. |
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* It extracts payment block settings (amount type, fixed amount, minimum amount, etc.) |
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* which are used for server-side validation to prevent payment manipulation. |
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* |
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* @param array<mixed> $blocks Array of blocks to process. |
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* @param int $form_id Form post ID. |
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* @return void |
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* @since 0.0.1 |
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*/ |
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public static function add_block_config( $blocks, $form_id ) { |
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// Initialize array to store processed block configurations. |
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$block_config = []; |
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|
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// Process blocks recursively. |
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self::process_blocks_recursive( $blocks, $block_config ); |
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|
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// Only update meta if we have processed configurations. |
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if ( ! empty( $block_config ) ) { |
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update_post_meta( $form_id, self::BLOCK_CONFIG_META_KEY, $block_config ); |
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} |
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} |
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|
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/** |
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* Retrieve or migrate the block configuration for legacy forms. |
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* |
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* This function checks if the _suredonation_block_config post meta exists for the given form ID. |
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* If not found, it attempts to parse the form's post content and generate the block config. |
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* |
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* @param int $form_id The ID of the form post. |
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* @since 0.0.1 |
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* @return array<string, array<string, mixed>>|null The block configuration array, or null if not found or invalid. |
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*/ |
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public static function get_or_migrate_block_config_for_legacy_form( $form_id ) { |
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// Validate that $form_id is a positive integer. |
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if ( ! is_int( $form_id ) || $form_id <= 0 ) { |
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return null; |
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} |
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|
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// Retrieve the block config from post meta. |
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$block_config = get_post_meta( $form_id, self::BLOCK_CONFIG_META_KEY, true ); |
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if ( ! empty( $block_config ) && is_array( $block_config ) ) { |
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// If it exists and is an array, return it directly (no migration needed). |
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return $block_config; |
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} |
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|
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// Get the post by ID and validate. |
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$post = get_post( $form_id ); |
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if ( ! ( $post instanceof \WP_Post ) || empty( $post->post_content ) ) { |
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return null; |
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} |
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|
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// Parse the blocks from the post content and attempt migration. |
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if ( function_exists( 'parse_blocks' ) ) { |
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$blocks = parse_blocks( $post->post_content ); |
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if ( is_array( $blocks ) && ! empty( $blocks ) ) { |
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self::add_block_config( $blocks, $form_id ); |
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} |
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} |
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|
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// Retrieve the block config again after migration attempt. |
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$block_config = get_post_meta( $form_id, self::BLOCK_CONFIG_META_KEY, true ); |
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|
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return ! empty( $block_config ) && is_array( $block_config ) ? $block_config : null; |
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} |
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|
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/** |
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* Process blocks recursively to extract configuration. |
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* |
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* @param array<mixed> $blocks Array of blocks to process. |
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* @param array<mixed> $block_config Reference to block config array. |
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* @return void |
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* @since 0.0.1 |
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*/ |
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private static function process_blocks_recursive( $blocks, &$block_config ) { |
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foreach ( $blocks as $block ) { |
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// Ensure $block is an array and has the required structure. |
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if ( ! is_array( $block ) ) { |
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continue; |
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} |
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|
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// Process inner blocks recursively (for columns, groups, etc.). |
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if ( ! empty( $block['innerBlocks'] ) && is_array( $block['innerBlocks'] ) ) { |
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self::process_blocks_recursive( $block['innerBlocks'], $block_config ); |
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} |
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|
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if ( ! isset( $block['blockName'] ) || ! isset( $block['attrs'] ) || ! is_array( $block['attrs'] ) ) { |
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continue; |
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} |
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|
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// Validate block_id exists. |
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if ( ! array_key_exists( 'block_id', $block['attrs'] ) || empty( $block['attrs']['block_id'] ) || ! is_string( $block['attrs']['block_id'] ) ) { |
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continue; |
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} |
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|
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$block_id = sanitize_text_field( $block['attrs']['block_id'] ); |
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$block_name = $block['blockName']; |
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|
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// Process specific block types. |
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$processed_config = null; |
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|
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switch ( $block_name ) { |
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case 'sd/payment': |
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$processed_config = self::process_payment_block( $block['attrs'], $blocks ); |
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break; |
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case 'sd/multi-choice': |
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$processed_config = self::process_multichoice_block( $block['attrs'] ); |
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break; |
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case 'sd/number': |
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$processed_config = self::process_number_block( $block['attrs'] ); |
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break; |
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} |
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|
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// If block was processed, store its configuration. |
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if ( null !== $processed_config && ! empty( $processed_config ) ) { |
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$processed_config['block_name'] = $block_name; |
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|
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// Add the slug to the configuration. |
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if ( isset( $block['attrs']['slug'] ) && ! empty( $block['attrs']['slug'] ) ) { |
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$processed_config['slug'] = sanitize_text_field( $block['attrs']['slug'] ); |
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} |
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|
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$block_config[ $block_id ] = $processed_config; |
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} |
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} |
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} |
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|
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/** |
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* Process payment block configuration. |
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* |
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* Extracts payment-related settings that are needed for server-side validation: |
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* - amount_type: 'fixed' or 'variable' |
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* - fixed_amount: The configured fixed amount |
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* - minimum_amount: The minimum allowed amount for variable amounts |
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* - variable_amount_field: The slug of the field providing the variable amount |
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* |
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* @param array<mixed> $attrs Block attributes. |
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* @param array<mixed> $blocks All blocks in the form. |
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* @return array<string, mixed> Processed payment configuration. |
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* @since 0.0.1 |
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*/ |
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private static function process_payment_block( $attrs, $blocks ) { |
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$payment_config = []; |
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|
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// Extract payment type (one-time or subscription). |
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// Default to 'one-time' if not set (Gutenberg may not save default values). |
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$payment_config['payment_type'] = isset( $attrs['paymentType'] ) && is_string( $attrs['paymentType'] ) |
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? sanitize_text_field( $attrs['paymentType'] ) |
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: 'one-time'; |
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|
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// Extract amount type (fixed or variable). |
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// IMPORTANT: Always store this - Gutenberg may not save attributes that match defaults. |
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// Default to 'fixed' which is the block.json default. |
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$payment_config['amount_type'] = isset( $attrs['amountType'] ) && is_string( $attrs['amountType'] ) |
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? sanitize_text_field( $attrs['amountType'] ) |
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: 'fixed'; |
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|
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// Extract configured fixed amount. |
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// Default to 10.00 to match block.json default. |
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$payment_config['fixed_amount'] = isset( $attrs['fixedAmount'] ) |
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? floatval( $attrs['fixedAmount'] ) |
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: 10.00; |
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|
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// Extract minimum amount for variable amounts. |
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// Default to 1.0 to match block.json default. |
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$payment_config['minimum_amount'] = isset( $attrs['minimumAmount'] ) |
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? floatval( $attrs['minimumAmount'] ) |
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: 1.0; |
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|
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// Extract variable amount field reference. |
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if ( isset( $attrs['variableAmountField'] ) ) { |
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$variable_amount_slug = sanitize_text_field( $attrs['variableAmountField'] ); |
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$payment_config['variable_amount_field'] = $variable_amount_slug; |
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|
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// Find and add the block name from which the variable amount field comes from. |
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if ( ! empty( $variable_amount_slug ) && is_array( $blocks ) ) { |
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$block_name = self::find_block_name_by_slug( $blocks, $variable_amount_slug ); |
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if ( $block_name ) { |
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$payment_config['variable_amount_field_block_name'] = $block_name; |
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} |
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} |
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} |
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|
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return $payment_config; |
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} |
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|
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/** |
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* Find block name by slug recursively. |
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* |
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* @param array<mixed> $blocks Array of blocks. |
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* @param string $slug Slug to find. |
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* @return string|null Block name if found, null otherwise. |
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* @since 0.0.1 |
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*/ |
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private static function find_block_name_by_slug( $blocks, $slug ) { |
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foreach ( $blocks as $block ) { |
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if ( ! is_array( $block ) ) { |
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continue; |
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} |
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|
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// Check inner blocks first. |
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if ( ! empty( $block['innerBlocks'] ) && is_array( $block['innerBlocks'] ) ) { |
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$found = self::find_block_name_by_slug( $block['innerBlocks'], $slug ); |
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if ( $found ) { |
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return $found; |
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} |
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} |
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|
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if ( isset( $block['attrs']['slug'] ) && $block['attrs']['slug'] === $slug ) { |
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return $block['blockName']; |
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} |
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} |
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return null; |
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} |
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|
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/** |
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* Process multi-choice block configuration. |
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* |
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* @param array<mixed> $attrs Block attributes. |
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* @return array<string, mixed> Processed multi-choice configuration. |
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* @since 0.0.1 |
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*/ |
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private static function process_multichoice_block( $attrs ) { |
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$multichoice_config = []; |
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|
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// Extract required field. |
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if ( isset( $attrs['required'] ) ) { |
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$multichoice_config['required'] = ! empty( $attrs['required'] ); |
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} |
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|
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// Extract choice type (radio or checkbox). |
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if ( isset( $attrs['choiceType'] ) ) { |
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$multichoice_config['choice_type'] = sanitize_text_field( $attrs['choiceType'] ); |
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} |
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|
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// Extract options with their full structure (label, value). |
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if ( isset( $attrs['options'] ) && is_array( $attrs['options'] ) ) { |
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$sanitized_options = []; |
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foreach ( $attrs['options'] as $option ) { |
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if ( is_array( $option ) ) { |
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$sanitized_options[] = [ |
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'label' => isset( $option['label'] ) ? sanitize_text_field( $option['label'] ) : '', |
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'value' => isset( $option['value'] ) ? sanitize_text_field( $option['value'] ) : '', |
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]; |
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} |
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} |
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$multichoice_config['options'] = $sanitized_options; |
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} |
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|
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return $multichoice_config; |
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} |
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|
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/** |
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* Process number block configuration. |
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* |
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* @param array<mixed> $attrs Block attributes. |
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* @return array<string, mixed> Processed number block configuration. |
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* @since 0.0.1 |
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*/ |
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private static function process_number_block( $attrs ) { |
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$number_config = []; |
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|
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// Extract required field. |
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if ( isset( $attrs['required'] ) ) { |
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$number_config['required'] = ! empty( $attrs['required'] ); |
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} |
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|
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// Extract min value. |
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if ( isset( $attrs['min'] ) ) { |
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$number_config['min'] = floatval( $attrs['min'] ); |
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} |
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|
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// Extract max value. |
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if ( isset( $attrs['max'] ) ) { |
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$number_config['max'] = floatval( $attrs['max'] ); |
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} |
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|
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return $number_config; |
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} |
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} |
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|
