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<?php |
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/** |
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* Settings_Manager — per-module typed settings storage, validation, and |
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* versioned migrations. |
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* |
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* Storage layout: one wp_option per module under the key |
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* `xspeed_module_<slug>`. The option value is an associative array that |
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* also carries a `_version` field (the module VERSION at the time of last |
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* write) so migrations know what schema produced the stored data. |
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* |
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* The pre-Module v1 settings (the global cache_enabled / minify_* / |
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* gzip_enabled / cache_expiry / excluded_urls) keep living in |
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* `xspeed_options` under the existing Settings class — Settings_Manager |
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* does not touch them. When v1 features are refactored into Modules, |
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* they'll migrate from `xspeed_options` to their per-module options as |
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* part of that PR. |
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* |
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* @package XSpeed |
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*/ |
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|
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namespace XSpeed; |
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|
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defined( 'ABSPATH' ) || exit; |
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|
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final class Settings_Manager { |
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|
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public const OPTION_PREFIX = 'xspeed_module_'; |
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|
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/** |
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* Read settings for a module slug. Returns defaults merged with stored |
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* values + the schema applied (unknown keys stripped). Always safe to |
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* call before activation — returns pure defaults if nothing is stored. |
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*/ |
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public static function get( string $slug ): array { |
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$module = Module_Registry::get( $slug ); |
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if ( ! $module ) { |
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return array(); |
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} |
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$schema = $module->settings_schema(); |
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$defaults = self::defaults_from_schema( $schema ); |
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$stored = get_option( self::option_key( $slug ), array() ); |
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if ( ! is_array( $stored ) ) { |
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$stored = array(); |
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} |
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$merged = array_merge( $defaults, $stored ); |
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|
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// Strip keys not in schema; coerce types to what the schema declares. |
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$clean = array(); |
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foreach ( $schema as $key => $spec ) { |
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$clean[ $key ] = array_key_exists( $key, $merged ) |
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? self::coerce( $merged[ $key ], $spec ) |
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: ( $spec['default'] ?? null ); |
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} |
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return $clean; |
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} |
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|
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/** |
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* Validate input against the module's schema, merge over stored values, |
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* and persist. Returns the final clean array. Unknown keys are stripped |
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* silently. Out-of-range / wrong-type values fall back to the previous |
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* stored value (or default). |
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*/ |
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public static function update( string $slug, array $input ): array { |
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$module = Module_Registry::get( $slug ); |
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if ( ! $module ) { |
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return array(); |
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} |
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$schema = $module->settings_schema(); |
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$current = self::get( $slug ); |
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|
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$clean = $current; |
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foreach ( $schema as $key => $spec ) { |
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if ( ! array_key_exists( $key, $input ) ) { |
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continue; |
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} |
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[ $value, $valid ] = self::validate_field( $input[ $key ], $spec ); |
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if ( $valid ) { |
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$clean[ $key ] = $value; |
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} |
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// Invalid → keep $current[$key]. We do not throw; REST layer can |
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// add its own strict-mode validation that 400s on invalid input. |
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} |
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|
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$clean['_version'] = $module->version(); |
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update_option( self::option_key( $slug ), $clean ); |
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|
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// Strip the internal _version key from the returned array. |
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unset( $clean['_version'] ); |
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return $clean; |
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} |
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|
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/** |
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* Run any pending schema migrations for a module. Called by |
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* Module_Registry before boot(). Idempotent — migrations only run once |
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* per version bump because we persist `_version` after each successful |
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* migration step. |
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*/ |
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public static function run_migrations( Module $module ): void { |
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$migrations = $module->migrations(); |
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if ( empty( $migrations ) ) { |
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return; |
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} |
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$option_key = self::option_key( $module->slug() ); |
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$stored = get_option( $option_key, null ); |
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if ( null === $stored ) { |
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return; // fresh install — no data to migrate. |
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} |
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if ( ! is_array( $stored ) ) { |
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$stored = array(); |
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} |
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$from = isset( $stored['_version'] ) ? (string) $stored['_version'] : '0.0.0'; |
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|
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// Sort migrations by version ascending. |
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uksort( |
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$migrations, |
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static function ( $a, $b ) { |
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return version_compare( (string) $a, (string) $b ); |
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} |
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); |
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|
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$dirty = false; |
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foreach ( $migrations as $target => $callable ) { |
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$target = (string) $target; |
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if ( version_compare( $from, $target, '>=' ) ) { |
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continue; |
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} |
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$migrated = call_user_func( $callable, $stored ); |
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if ( is_array( $migrated ) ) { |
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$stored = $migrated; |
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$stored['_version'] = $target; |
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$from = $target; |
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$dirty = true; |
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} |
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} |
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|
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if ( $dirty ) { |
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update_option( $option_key, $stored ); |
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} |
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} |
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|
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/** |
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* Coerce a stored value to the schema's declared type — used on read |
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* to defend against options edited by hand or imported across versions. |
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*/ |
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private static function coerce( $value, array $spec ) { |
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$type = $spec['type'] ?? 'string'; |
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switch ( $type ) { |
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case 'bool': |
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return (bool) $value; |
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case 'int': |
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$v = (int) $value; |
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if ( isset( $spec['min'] ) ) { |
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$v = max( (int) $spec['min'], $v ); |
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} |
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if ( isset( $spec['max'] ) ) { |
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$v = min( (int) $spec['max'], $v ); |
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} |
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return $v; |
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case 'enum': |
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return in_array( $value, $spec['options'] ?? array(), true ) |
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? $value |
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: ( $spec['default'] ?? null ); |
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case 'list': |
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if ( ! is_array( $value ) ) { |
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return $spec['default'] ?? array(); |
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} |
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return array_values( array_filter( $value, 'is_scalar' ) ); |
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case 'url': |
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$url = esc_url_raw( (string) $value ); |
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return $url ?: ( $spec['default'] ?? '' ); |
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case 'string': |
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default: |
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return sanitize_text_field( (string) $value ); |
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} |
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} |
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|
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/** |
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* Validate one field; returns [ coerced_value, was_valid ]. Distinct |
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* from coerce() because validate is strict (out-of-range int is |
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* INVALID) while coerce is forgiving (clamps to range). |
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*/ |
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private static function validate_field( $value, array $spec ): array { |
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$type = $spec['type'] ?? 'string'; |
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switch ( $type ) { |
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case 'bool': |
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return array( (bool) $value, true ); |
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case 'int': |
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if ( ! is_numeric( $value ) ) { |
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return array( null, false ); |
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} |
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$v = (int) $value; |
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if ( isset( $spec['min'] ) && $v < (int) $spec['min'] ) { |
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return array( null, false ); |
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} |
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if ( isset( $spec['max'] ) && $v > (int) $spec['max'] ) { |
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return array( null, false ); |
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} |
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return array( $v, true ); |
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case 'enum': |
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$ok = in_array( $value, $spec['options'] ?? array(), true ); |
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return array( $ok ? $value : null, $ok ); |
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case 'list': |
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if ( ! is_array( $value ) ) { |
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return array( null, false ); |
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} |
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$item_type = $spec['item_type'] ?? 'string'; |
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$out = array(); |
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foreach ( $value as $item ) { |
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if ( 'url' === $item_type ) { |
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$u = esc_url_raw( (string) $item ); |
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if ( $u ) { |
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$out[] = $u; |
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} |
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} else { |
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$out[] = sanitize_text_field( (string) $item ); |
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} |
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} |
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return array( $out, true ); |
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case 'url': |
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$u = esc_url_raw( (string) $value ); |
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return array( $u, (bool) $u ); |
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case 'string': |
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default: |
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return array( sanitize_text_field( (string) $value ), true ); |
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} |
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} |
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|
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private static function defaults_from_schema( array $schema ): array { |
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$out = array(); |
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foreach ( $schema as $key => $spec ) { |
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$out[ $key ] = $spec['default'] ?? null; |
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} |
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return $out; |
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} |
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|
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private static function option_key( string $slug ): string { |
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return self::OPTION_PREFIX . $slug; |
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} |
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} |
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|
