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<?php |
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/** |
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* Tax ID Detector. |
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* |
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* Detects which third-party tax-ID plugin (if any) is active on the site and |
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* builds a per-type "write map" — for each Tax_Id_Types type, the meta key that |
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* WCPOS should write to. Order of precedence: |
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* |
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* 1. Detected active third-party plugin (recognised by basename + populated keys). |
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* 2. Populated-key scan over recent orders (when no plugin is recognised). |
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* 3. WCPOS sensible defaults (see Tax_Id_Settings::default_write_map()). |
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* |
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* The result is consumed by Tax_Id_Writer. Pure-logic helpers are exposed as |
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* statics so the heuristics are unit-testable without WordPress. |
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* |
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* @package WCPOS\WooCommercePOS |
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*/ |
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|
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namespace WCPOS\WooCommercePOS\Services; |
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|
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/** |
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* Tax_Id_Detector class. |
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*/ |
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class Tax_Id_Detector { |
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/** |
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* Recognised plugin definitions. Each entry maps a "plugin id" used in the |
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* detection result to: |
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* |
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* - basename: the plugin file basename (matches `is_plugin_active()`). |
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* - alt_basenames: alternative folders/files seen in the wild. |
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* - keys: per-type meta keys that this plugin writes. |
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* |
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* @var array<string,array{basename:string,alt_basenames?:array<int,string>,keys:array<string,string>}> |
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*/ |
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const PLUGINS = array( |
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'wc_eu_vat_number' => array( |
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'basename' => 'woocommerce-eu-vat-number/woocommerce-eu-vat-number.php', |
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'alt_basenames' => array(), |
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'keys' => array( |
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Tax_Id_Types::TYPE_EU_VAT => '_billing_vat_number', |
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Tax_Id_Types::TYPE_GB_VAT => '_billing_vat_number', |
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), |
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), |
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'aelia_eu_vat' => array( |
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'basename' => 'aelia-eu-vat-assistant/aelia-eu-vat-assistant.php', |
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'alt_basenames' => array(), |
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'keys' => array( |
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Tax_Id_Types::TYPE_EU_VAT => '_eu_vat_data', |
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Tax_Id_Types::TYPE_GB_VAT => '_eu_vat_data', |
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), |
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), |
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'wpfactory_eu_vat' => array( |
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'basename' => 'eu-vat-for-woocommerce/eu-vat-for-woocommerce.php', |
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'alt_basenames' => array( |
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'wpfactory-eu-vat-number/wpfactory-eu-vat-number.php', |
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), |
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'keys' => array( |
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Tax_Id_Types::TYPE_EU_VAT => '_billing_eu_vat_number', |
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Tax_Id_Types::TYPE_GB_VAT => '_billing_eu_vat_number', |
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), |
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), |
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'germanized' => array( |
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'basename' => 'woocommerce-germanized/woocommerce-germanized.php', |
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'alt_basenames' => array( |
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'woocommerce-germanized-pro/woocommerce-germanized-pro.php', |
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), |
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'keys' => array( |
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Tax_Id_Types::TYPE_EU_VAT => '_billing_vat_id', |
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), |
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), |
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'br_market' => array( |
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'basename' => 'woocommerce-extra-checkout-fields-for-brazil/woocommerce-extra-checkout-fields-for-brazil.php', |
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'alt_basenames' => array( |
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'brazilian-market-on-woocommerce/brazilian-market-on-woocommerce.php', |
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), |
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'keys' => array( |
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Tax_Id_Types::TYPE_BR_CPF => '_billing_cpf', |
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Tax_Id_Types::TYPE_BR_CNPJ => '_billing_cnpj', |
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), |
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), |
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'es_nif' => array( |
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'basename' => 'wc-apg-nif-cif-spain/wc-apg-nif-cif-spain.php', |
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'alt_basenames' => array( |
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'woocommerce-nif-cif-spain/woocommerce-nif-cif-spain.php', |
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), |
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'keys' => array( |
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Tax_Id_Types::TYPE_ES_NIF => '_billing_nif', |
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), |
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), |
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); |
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|
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/** |
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* Whether `is_plugin_active()` is callable in this request context. |
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* Loads `wp-admin/includes/plugin.php` lazily if necessary. |
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* |
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* @return bool |
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*/ |
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public static function ensure_plugin_helpers_loaded(): bool { |
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if ( \function_exists( 'is_plugin_active' ) ) { |
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return true; |
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} |
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|
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$file = ABSPATH . 'wp-admin/includes/plugin.php'; |
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if ( is_readable( $file ) ) { |
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require_once $file; |
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} |
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|
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return \function_exists( 'is_plugin_active' ); |
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} |
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|
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/** |
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* Detect active recognised plugins. |
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* |
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* @return array<int,string> Plugin ids (keys of self::PLUGINS) that are active. |
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*/ |
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public static function active_plugin_ids(): array { |
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if ( ! self::ensure_plugin_helpers_loaded() ) { |
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return array(); |
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} |
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|
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$active = array(); |
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foreach ( self::PLUGINS as $plugin_id => $def ) { |
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$candidates = array_merge( array( $def['basename'] ), $def['alt_basenames'] ); |
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foreach ( $candidates as $basename ) { |
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if ( \is_plugin_active( $basename ) ) { |
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$active[] = $plugin_id; |
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break; |
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} |
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} |
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} |
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|
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return $active; |
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} |
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|
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/** |
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* Build the per-type write map by combining detection signals with defaults. |
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* |
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* Precedence (later entries overwrite earlier): |
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* 1. WCPOS defaults |
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* 2. Inferred from populated-key scan (if any) |
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* 3. Active plugin claims |
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* 4. User overrides (passed in) |
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* |
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* @param array<string,string> $defaults Default per-type → meta-key map. |
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* @param array<string,string> $inferred Per-type → meta-key map inferred from order scan. |
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* @param array<int,string> $active_plugins Plugin ids that are active. |
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* @param array<string,string> $overrides User-supplied per-type overrides. |
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* |
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* @return array<string,string> |
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*/ |
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public static function compose_write_map( |
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array $defaults, |
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array $inferred, |
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array $active_plugins, |
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array $overrides |
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): array { |
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$map = $defaults; |
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|
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foreach ( $inferred as $type => $key ) { |
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if ( Tax_Id_Types::is_valid_type( $type ) && \is_string( $key ) && '' !== $key ) { |
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$map[ $type ] = $key; |
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} |
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} |
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|
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foreach ( $active_plugins as $plugin_id ) { |
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$plugin = self::PLUGINS[ $plugin_id ] ?? null; |
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if ( null === $plugin ) { |
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continue; |
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} |
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foreach ( $plugin['keys'] as $type => $key ) { |
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if ( ! Tax_Id_Types::is_valid_type( $type ) ) { |
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continue; |
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} |
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$map[ $type ] = $key; |
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} |
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} |
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|
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foreach ( $overrides as $type => $key ) { |
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if ( Tax_Id_Types::is_valid_type( $type ) && \is_string( $key ) && '' !== $key ) { |
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$map[ $type ] = $key; |
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} |
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} |
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|
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return $map; |
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} |
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|
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/** |
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* Scan recent orders for populated tax-ID-like meta keys and return the |
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* per-type → meta-key map this implies. |
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* |
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* Heuristic: for each candidate key, count the number of populated rows in |
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* the last `$limit` orders. Pick the most-populated key per type. |
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* |
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* @param int $limit Max number of recent orders to inspect. |
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* |
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* @return array<string,string> |
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*/ |
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public static function infer_from_recent_orders( int $limit = 200 ): array { |
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if ( $limit <= 0 ) { |
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return array(); |
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} |
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|
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// Candidate key → type mapping for the scan. Reuses Tax_Id_Reader's fallback chain |
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// for direct types; generic VAT keys all map to TYPE_EU_VAT here (the inference is |
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// intentionally coarse — a per-row country prefix lookup is overkill for this). |
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$candidates = array( |
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'_billing_vat_number' => Tax_Id_Types::TYPE_EU_VAT, |
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'_billing_eu_vat_number' => Tax_Id_Types::TYPE_EU_VAT, |
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'_vat_number' => Tax_Id_Types::TYPE_EU_VAT, |
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'_billing_vat' => Tax_Id_Types::TYPE_EU_VAT, |
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'_billing_vat_id' => Tax_Id_Types::TYPE_EU_VAT, |
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'_billing_cpf' => Tax_Id_Types::TYPE_BR_CPF, |
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'_billing_cnpj' => Tax_Id_Types::TYPE_BR_CNPJ, |
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'_billing_gstin' => Tax_Id_Types::TYPE_IN_GST, |
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'_billing_cf' => Tax_Id_Types::TYPE_IT_CF, |
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'_billing_codice_fiscale' => Tax_Id_Types::TYPE_IT_CF, |
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'_billing_piva' => Tax_Id_Types::TYPE_IT_PIVA, |
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'_billing_partita_iva' => Tax_Id_Types::TYPE_IT_PIVA, |
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'_billing_nif' => Tax_Id_Types::TYPE_ES_NIF, |
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'_billing_cuit' => Tax_Id_Types::TYPE_AR_CUIT, |
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); |
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|
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// Best-effort SQL: tolerate environments where wc_get_orders() / HPOS aren't |
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// available. We use the wc_get_orders() API for cross-store compatibility. |
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if ( ! \function_exists( 'wc_get_orders' ) ) { |
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return array(); |
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} |
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|
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$orders = \wc_get_orders( |
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array( |
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'limit' => $limit, |
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'orderby' => 'date', |
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'order' => 'DESC', |
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'status' => 'any', |
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'return' => 'ids', |
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) |
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); |
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if ( ! \is_array( $orders ) || empty( $orders ) ) { |
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return array(); |
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} |
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|
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// Tally populated rows per candidate. |
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$counts = array_fill_keys( array_keys( $candidates ), 0 ); |
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foreach ( $orders as $order_id ) { |
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if ( \is_object( $order_id ) && \method_exists( $order_id, 'get_id' ) ) { |
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$order_id = $order_id->get_id(); |
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} |
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$meta = \get_post_meta( (int) $order_id ); |
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if ( ! \is_array( $meta ) || empty( $meta ) ) { |
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continue; |
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} |
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foreach ( $candidates as $meta_key => $_type ) { |
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$value = isset( $meta[ $meta_key ][0] ) ? $meta[ $meta_key ][0] : null; |
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if ( '' === $value || array() === $value || null === $value ) { |
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continue; |
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} |
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++$counts[ $meta_key ]; |
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} |
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} |
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|
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// Pick the top-counted key per type. |
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$best = array(); |
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foreach ( $candidates as $meta_key => $type ) { |
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if ( $counts[ $meta_key ] <= 0 ) { |
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continue; |
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} |
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if ( ! isset( $best[ $type ] ) || $counts[ $meta_key ] > $counts[ $best[ $type ] ] ) { |
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$best[ $type ] = $meta_key; |
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} |
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} |
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|
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$inferred = array(); |
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foreach ( $best as $type => $meta_key ) { |
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$inferred[ $type ] = $meta_key; |
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} |
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|
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return $inferred; |
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} |
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|
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/** |
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* Build the full detection summary for a request. Cached per-request. |
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* |
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* @return array{plugins:array<int,string>,write_map:array<string,string>} |
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*/ |
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public function summary(): array { |
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static $cache = null; |
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if ( null !== $cache ) { |
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return $cache; |
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} |
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|
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$active = self::active_plugin_ids(); |
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$inferred = empty( $active ) ? self::infer_from_recent_orders() : array(); |
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$overrides = Tax_Id_Settings::get_overrides(); |
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$defaults = Tax_Id_Settings::default_write_map(); |
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|
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$cache = array( |
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'plugins' => $active, |
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'write_map' => self::compose_write_map( $defaults, $inferred, $active, $overrides ), |
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); |
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|
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return $cache; |
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} |
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} |
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|
