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<?php |
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/** |
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* OpenStation — Games Heartbeat sync (PHP). |
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* |
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* Piggybacks on the WordPress Heartbeat tick — the same channel |
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* presence and folder sharing use — to deliver challenge activity |
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* to connected users live: a new pending challenge for the |
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* recipient, a completed run for the challenger. |
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* |
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* Wire format. Client sends: |
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* |
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* { |
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* openstation_games_subscribe: { |
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* challengesVersion: lastSeenUpdatedAtMs |
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* } |
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* } |
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* |
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* Server responds: |
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* |
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* openstation_games: { |
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* challenges: [ <ChallengeShape> ], // rows involving me, |
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* // updated_at_ms > version |
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* serverTimeMs: int, |
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* truncated: bool |
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* } |
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* |
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* Version-gated: a quiet tick carries no rows. Truncation kicks in |
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* past `openstation_games_heartbeat_max_rows` (default 50) — the |
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* client falls back to `GET /games/challenges` for a full resync. |
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* |
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* @package OpenStation |
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*/ |
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|
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defined( 'ABSPATH' ) || exit; |
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|
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/** |
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* @param array $response Pre-filtered response. |
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* @param array $data Client-sent payload. |
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* @return array |
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*/ |
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function openstation_games_heartbeat_received( $response, $data ) { |
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if ( ! is_array( $response ) ) { |
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$response = array(); |
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} |
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if ( empty( $data['openstation_games_subscribe'] ) || ! is_array( $data['openstation_games_subscribe'] ) ) { |
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return $response; |
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} |
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if ( ! function_exists( 'openstation_is_enabled' ) || ! openstation_is_enabled() ) { |
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return $response; |
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} |
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|
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$user_id = (int) get_current_user_id(); |
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if ( $user_id <= 0 ) { |
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return $response; |
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} |
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|
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$sub = $data['openstation_games_subscribe']; |
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$version = isset( $sub['challengesVersion'] ) ? (int) $sub['challengesVersion'] : 0; |
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|
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/** |
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* Filter the per-tick challenge row cap. Past the cap the |
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* payload is flagged `truncated` and the client resyncs over |
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* REST. |
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* |
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* @param int $cap Default 50. |
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*/ |
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$cap = max( 1, (int) apply_filters( 'openstation_games_heartbeat_max_rows', 50 ) ); |
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|
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$rows = openstation_games_get_challenges_for_user( $user_id, $version, $cap + 1 ); |
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$truncated = count( $rows ) > $cap; |
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if ( $truncated ) { |
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$rows = array_slice( $rows, 0, $cap ); |
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} |
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|
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$response['openstation_games'] = array( |
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'challenges' => array_map( 'openstation_games_shape_challenge', $rows ), |
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'serverTimeMs' => openstation_games_now_ms(), |
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'truncated' => $truncated, |
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); |
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return $response; |
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} |
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add_filter( 'heartbeat_received', 'openstation_games_heartbeat_received', 5, 2 ); |
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|
