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<?php |
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/** |
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* One-active-import-per-user guard (spec 042 FR-015, research.md §5). |
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* |
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* FSI is inherently single-session (`SessionData::get_session_id()` tracks one |
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* import); the browser enforces one-at-a-time via its UI. Headless MCP callers |
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* have no such UI, so this small registry makes the invariant hold: a second |
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* `start` while one import is in flight returns the existing handle instead of |
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* minting a parallel session. |
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* |
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* Stored in a NON-autoloaded per-user option so it never bloats the autoload |
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* cache (matches the 026/034 storage convention). Scoped by user id the same |
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* way `Templately\Utils\Options` scopes its rows. |
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* |
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* @package Templately\Modules\FullSiteImport\Abilities\Support |
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*/ |
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|
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namespace Templately\Modules\FullSiteImport\Abilities\Support; |
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|
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class FsiActiveImportGuard { |
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|
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const OPTION_PREFIX = 'templately_mcp_fsi_active_'; |
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|
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/** |
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* The active handle for a user, or null when there is none. |
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* |
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* @param int $user_id |
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* @return array|null { session_id, started_at } or null. |
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*/ |
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public static function get_active( int $user_id ): ?array { |
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$row = get_option( self::key( $user_id ) ); |
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|
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if ( empty( $row ) || ! is_array( $row ) || empty( $row['session_id'] ) ) { |
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return null; |
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} |
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|
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return $row; |
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} |
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|
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/** |
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* Record a user's active import handle. |
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* |
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* @param int $user_id |
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* @param string $session_id |
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* @return void |
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*/ |
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public static function set_active( int $user_id, string $session_id ): void { |
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// add_option with autoload 'no' on first write; update_option keeps the |
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// existing autoload flag on subsequent writes. |
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$key = self::key( $user_id ); |
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$row = [ 'session_id' => $session_id, 'started_at' => time() ]; |
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|
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if ( false === get_option( $key ) ) { |
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add_option( $key, $row, '', 'no' ); |
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} else { |
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update_option( $key, $row ); |
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} |
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} |
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|
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/** |
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* Clear a user's active import handle (on a terminal complete/failed/revert). |
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* |
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* @param int $user_id |
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* @return void |
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*/ |
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public static function clear( int $user_id ): void { |
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delete_option( self::key( $user_id ) ); |
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} |
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|
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/** |
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* @param int $user_id |
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* @return string |
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*/ |
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private static function key( int $user_id ): string { |
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return self::OPTION_PREFIX . $user_id; |
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} |
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} |
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