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WCPOS – Point of Sale (POS) plugin for WooCommerce / 1.10.20
WCPOS – Point of Sale (POS) plugin for WooCommerce v1.10.20
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← All changes | includes/Init.php +313 -204 1.10.4 → 1.10.20 View file →
@@ -12,11 +12,9 @@
12 12
13 13 use WCPOS\WooCommercePOS\Admin\Consent;
14 14 use WCPOS\WooCommercePOS\Admin\Menu;
15 15 use WCPOS\WooCommercePOS\Services\Auth as AuthService;
16 -use WCPOS\WooCommercePOS\Services\Extensions;
17 -use WCPOS\WooCommercePOS\Services\Receipt_Snapshot_Store;
18 -use WCPOS\WooCommercePOS\Services\Settings as SettingsService;
16 +use WCPOS\WooCommercePOS\Services\Service_Groups;
19 17
20 18 /**
21 19 * Init class.
22 20 */
@@ -21,197 +19,269 @@
21 19 * Init class.
22 20 */
23 21 class Init {
24 22 /**
25 - * Constructor — the plugin's entire `plugins_loaded` hook wiring.
23 + * Observer awaiting the constructor's non-hook seed step.
26 24 *
27 - * Reached from {@see Activator::init()}, which runs on `plugins_loaded` at the
28 - * default priority 10. Everything that must exist before `init` fires — most
29 - * importantly the `determine_current_user` pair — has to be registered here.
25 + * @var Sync\Visibility_Observer|null
26 + */
27 + private $visibility_observer;
28 +
29 + /**
30 + * Install the ordered wiring declared by {@see hook_rows()}.
30 31 *
31 - * NOT PURE WIRING. Constructing this class also, in statement order:
32 - * `require_once`s `wcpos-functions.php` and `wcpos-store-functions.php`;
33 - * registers the `wc_pos_user_uuid_locks` global cache group; READS the sync
34 - * schema-latch option; WRITES options through
35 - * `Config_Fingerprint::maybe_cleanup_legacy_options()` (one-time, latched on
36 - * its own version option); and SCHEDULES a daily cron event through
37 - * `Sync_Journal_Purge::register_hooks()`. Anything that constructs `Init` —
38 - * a test included — inherits all of that.
39 - *
40 - * ## How to read the ordering table
41 - *
42 - * A priority number decides ordering on its own, wherever in this method it
43 - * happens to be written. Statement order is load-bearing ONLY when two
44 - * callbacks share a hook AND a priority: WordPress then runs them in
45 - * registration order. Exactly one such pair exists here, and it is marked
46 - * ORDER-CRITICAL (STATEMENT ORDER) below — do not move it.
47 - *
48 - * Priorities that live in the callee (`Meta_Normalizer` at 5, `Revision` at 9,
49 - * the proxy stampers at 10) are listed at the value they actually register,
50 - * not at the position of the call in this method. Reordering those statements
51 - * changes nothing; changing those numbers changes everything.
52 - *
53 - * "Why" is recovered from `git log -S` / `git blame` where a reason was
54 - * recorded. Where none was, the entry says **unknown** rather than guessing.
55 - *
56 - * ## Ordering table
57 - *
58 - * | # | Hook | Callback | Pri | Order | Why that priority |
59 - * |---|------|----------|-----|-------|-------------------|
60 - * | 1 | `activated_plugin`, `upgrader_process_complete`, `admin_enqueue_scripts`, `admin_notices`, `rest_api_init` | `Admin\Consent` (5 callbacks) | 10 | irrelevant | Default. What matters is that `Consent` is built during `plugins_loaded`, so its lifecycle hooks exist before an activation/update request fires them. |
61 - * | 2 | `woocommerce_pos_rest_api_controllers` | `Sync\Api::register_controllers` | 10 | irrelevant | Default; sole callback. |
62 - * | 3 | `wcpos_integrity_digest_rebuild` | `Sync\Integrity_Digest::run_scheduled_rebuild` | 10 | irrelevant | Default; sole callback. Registered OUTSIDE the schema latch, so an already-scheduled rebuild still has a callback while the latch is down. |
63 - * | 4 | `woocommerce_pos_sync_proxy_response`, `..._serialized_product`, `..._serialized_order` | `Sync\Meta_Normalizer::normalize` | **5** | **ORDER-CRITICAL** | Must precede `Revision` at 9 so the stamped revision bytes equal what the write path recomputes from a bare `wc/v3` re-read. See `Sync\Augmentation_Pipeline` class docblock and `Sync\Meta_Normalizer::register_hooks()`. Kept out of the pipeline because it also serves the ORDER lane. |
64 - * | 5 | `woocommerce_pos_sync_serialized_order` | `Sync\Pos_Uuid::stamp_serialized_record` | 10 | order-critical (by number) | After `Meta_Normalizer` at 5, in step with the product lane's stampers. |
65 - * | 6 | `woocommerce_pos_sync_order_pull_payloads` | `Sync\Integrity_Digest::stamp_proxy_order_digests` | 10 | irrelevant | Default; sole callback on that filter. |
66 - * | 7 | `woocommerce_pos_sync_proxy_response` | `Sync\Revision::stamp_proxy_revisions` (via `Augmentation_Pipeline::install()`) | **9** | **ORDER-CRITICAL** | Between `Meta_Normalizer` (5) and the uuid/digest stampers (10). Revision must hash the normalized-but-not-yet-augmented payload. |
67 - * | 8 | `woocommerce_pos_sync_proxy_response`, `..._serialized_product` | `Proxy_Uuid_Stamper`, `Integrity_Digest` digest stampers, pipeline projections | 10 | order-critical (by number) | Preserved verbatim from the hand-wiring the pipeline replaced, so third-party code hooking either public filter still runs where it always did. |
68 - * | 9 | `woocommerce_before_product_object_save`, `woocommerce_before_product_variation_object_save` | `Sync\Pos_Uuid::stamp_on_save` | 10 | irrelevant | Default. The HOOK is the design (before the data store writes, so the uuid lands in the same save); the number is not. Registered unconditionally — identity is core, not an observer. |
69 - * | 10 | 32 catalogue/customer/order hooks | `Sync\Sync_Journal` (33 callbacks) | 10 | irrelevant | Default throughout. |
70 - * | 10b | `delete_option` plus `pre_update_option_*`, `update_option_*`, `add_option_*`, `delete_option_*` for the two `Pos_Visibility::source_options()` | `Sync\Visibility_Observer` (9 callbacks) | 10 | irrelevant | Default. Appends the journal row for a record entering or leaving the POS servable set — the transition the sequence-log stream relies on, since it drops a hidden record's update rows. `delete_option` is the generic PRE-delete action (the per-option form fires after) and is gated on the option name inside the callback. Registered after `Sync_Journal` only because it writes through it; the constructor also runs the observer's one-time tombstone seed. |
71 - * | 11 | `wcpos_sync_journal_purge` | `Sync\Sync_Journal_Purge::run_purge` | 10 | irrelevant | Cron callback; sole listener. This call also SCHEDULES the daily event. |
72 - * | 12 | 21 catalogue/customer/order hooks (a subset of row 10's) | `Sync\Integrity_Digest` | 10 | unknown | Default. Shares every one of its hooks with `Sync_Journal` at the same priority, so the journal always runs first — no code found that depends on that, but nothing pins it either. |
73 - * | 13 | `init` | `Init::init` | 10 | **ORDER-CRITICAL, CROSS-PLUGIN** | Default. **Pro registers its own `init` at 20** (`woocommerce-pos-pro/includes/Init.php:32`) so free's services exist first. Raising free's number silently breaks Pro; nothing on either side tests it. |
74 - * | 14 | `rest_api_init` | `Init::init_rest_api` | **20** | **ORDER-CRITICAL, CROSS-PLUGIN** | Free's own reason: unknown — the number dates to the initial commit (8f2b9eac, 2021-03-16). It is load-bearing anyway: **Pro registers `rest_api_init` at 9**, commented "Before the free version" (`woocommerce-pos-pro/includes/Init.php:33`). Untested on both sides. |
75 - * | 15 | `query_vars` | `Init::query_vars` | 10 | irrelevant | Default; appends one var. |
76 - * | 16 | `pre_update_option_woocommerce_pos_pro_settings_license` | `Init::remove_license_transient` | 10 | irrelevant | Default. The reentrancy guard, not the priority, is what makes it safe (f33b8d655). |
77 - * | 17 | ~~`rest_pre_serve_request`~~ | *(removed)* | — | — | Init no longer publishes any part of the REST wire contract. This registration and its handler moved to `Rest_Cors::register_hooks()`, which registers at **20** — after core's `rest_send_cors_headers` at 10 — so WCPOS is the last writer on the lanes it owns. The old `5` had no recorded reason; the new number does. |
78 - * | 18 | `send_headers` | `Init::send_headers` | 99 | unknown | Introduced by 62da70551 ("fix WPSEO integration"). The commit records no reason for the number beyond running late. |
79 - * | 19 | `send_headers` | `Init::remove_x_frame_options` | **9999** | **ORDER-CRITICAL** | Must run AFTER security plugins have set `X-Frame-Options`, because it works by `header_remove()` (80ee545a5). A smaller number lets the plugin set the header again afterwards. |
80 - * | 20 | `determine_current_user` | `Services\Core_Order_Audit_Guard::record_prior_authentication` | **20** | **ORDER-CRITICAL (STATEMENT ORDER)** | See below. |
81 - * | 21 | `rest_pre_dispatch` | `Services\Core_Order_Audit_Guard::rest_pre_dispatch` | 10 | irrelevant | Default; reads what row 20 recorded. |
82 - * | 22 | `woocommerce_update_coupon` | `Sync\Coupon_Modified_Date::touch` | 10 | irrelevant | Default. `Sync_Journal::record_coupon_updated` shares the hook and priority (row 10) and is registered first, but the journal timestamps rows with the wall clock, not the coupon's `post_modified`, so neither ordering changes an outcome. |
83 - * | 23 | `determine_current_user` | `Init::determine_current_user_early` | **20** | **ORDER-CRITICAL (STATEMENT ORDER)** | See below. |
84 - * | 24 | `admin_init` | `Services\Lifecycle_Events::flush_pending`, `::maybe_schedule_refresh` | 10 | irrelevant | Default. `admin_init` because both need a fully booted admin request: one sends install/upgrade events recorded before the plugin was loaded enough to send them, the other schedules row 25. Both check consent first and cost nothing on a site that opted out. |
85 - * | 25 | `wcpos_analytics_group_refresh` | `Services\Lifecycle_Events::refresh_group_properties` | 10 | irrelevant | Default; sole listener. Unlike row 11, this call does NOT schedule the event — scheduling lives in row 24 so that withdrawing consent unschedules it. |
86 - *
87 - * ## The one pair where statement order is the whole mechanism
88 - *
89 - * Rows 20 and 23 share `determine_current_user` AND priority 20, so insertion
90 - * order — and nothing else — decides which runs first. 20 puts both after
91 - * WordPress core's own handlers, which `default-filters.php` registers before
92 - * any plugin loads: `wp_validate_auth_cookie` at 10, then
93 - * `wp_validate_logged_in_cookie` and `wp_validate_application_password`, both
94 - * at 20 and therefore both ahead of these two.
95 - *
96 - * The guard must run FIRST. It records into `pre_wcpos_user_id` whichever user
97 - * some EARLIER filter had already authenticated; a non-zero value means the
98 - * request proved itself with a cookie or application password, so
99 - * `Core_Order_Audit_Guard::is_wcpos_jwt_authenticated()` returns false and the
100 - * request keeps its normal power over order meta.
101 - *
102 - * Swap the two statements and the guard records the user WCPOS's own JWT filter
103 - * just authenticated. `pre_wcpos_user_id` is then non-zero on every
104 - * token-authenticated request, `is_wcpos_jwt_authenticated()` returns false for
105 - * all of them, and forged `_pos_*` audit meta on `/wc/v3/orders` is accepted.
106 - * It fails OPEN, silently, on a route no smoke test touches.
107 - *
108 - * Pinned by `tests/includes/Test_Init_Hook_Wiring.php`, which asserts the two
109 - * callbacks' ARRAY POSITIONS inside `callbacks[20]` — asserting priorities
110 - * would pass on the broken order.
32 + * Non-hook setup stays here, interleaved at its original registration boundaries.
111 33 */
112 34 public function __construct() {
113 - // global helper functions.
114 35 require_once PLUGIN_PATH . 'includes/wcpos-functions.php';
115 36 require_once PLUGIN_PATH . 'includes/wcpos-store-functions.php';
116 37 wp_cache_add_global_groups( 'wc_pos_user_uuid_locks' );
117 38
118 - // Tracking consent pop-up + callout. Registered here (during
119 - // plugins_loaded) so its lifecycle hooks (activated_plugin,
120 - // upgrader_process_complete) are in place before those actions
121 - // fire on a plugin activation or update request.
122 - new Consent();
123 - add_filter( 'woocommerce_pos_rest_api_controllers', array( \WCPOS\WooCommercePOS\Sync\Api::class, 'register_controllers' ) );
124 - add_action( \WCPOS\WooCommercePOS\Sync\Integrity_Digest::REBUILD_HOOK, array( \WCPOS\WooCommercePOS\Sync\Integrity_Digest::class, 'run_scheduled_rebuild' ) );
125 - // Gate on the schema latch, not a live Health probe: the latch is only
126 - // set AFTER install verified every table (latch-after-verify), so a
127 - // per-request SHOW TABLES sweep buys nothing — and a table lost after
128 - // latching is already survivable (observer writes fail open and the
129 - // REST health gate 503s the sync endpoints).
130 - $sync_schema_latched = \WCPOS\WooCommercePOS\Sync\Api::SCHEMA_VERSION === get_option( \WCPOS\WooCommercePOS\Sync\Api::SCHEMA_OPTION, null );
131 - if ( $sync_schema_latched ) {
132 - // Normalize structured meta at priority 5, before revision stamps at 9
133 - // and UUID, digest, and variable-price stamps at priority 10. Kept out
134 - // of the augmentation pipeline because it also serves the order lane.
135 - \WCPOS\WooCommercePOS\Sync\Meta_Normalizer::register_hooks();
136 - add_filter( 'woocommerce_pos_sync_serialized_order', array( \WCPOS\WooCommercePOS\Sync\Pos_Uuid::class, 'stamp_serialized_record' ), 10, 3 );
137 - // ONE seam for both product read lanes: the batch catalog proxy and the
138 - // per-object serializer. Every stamper is declared once inside; both
139 - // public filter names stay live as projections of it. The order pull
140 - // lane's digest stamper is wired there too — it was hand-added here,
141 - // under this same latch, which made the pipeline's single-wiring-site
142 - // claim untrue.
143 - \WCPOS\WooCommercePOS\Sync\Augmentation_Pipeline::install();
39 + $rows = $this->hook_rows( true );
40 + Hook_Manifest::validate( $rows );
41 + Hook_Manifest::install( wp_list_filter( $rows, array( 'phase' => 'pre-latch' ) ) );
42 + $sync_latched = Sync\Api::SCHEMA_VERSION === get_option( Sync\Api::SCHEMA_OPTION, null );
43 + foreach ( $rows as $row ) {
44 + if ( 'pre-latch' === $row['phase'] || ( 'sync-latched' === $row['phase'] && ! $sync_latched ) ) {
45 + continue;
46 + }
47 + if ( array( $this, 'init' ) === $row['callback'] ) {
48 + ( new Sync\Config_Fingerprint() )->maybe_cleanup_legacy_options();
49 + }
50 + Hook_Manifest::install( array( $row ) );
51 + if ( null !== $this->visibility_observer ) {
52 + $this->visibility_observer->maybe_seed_hidden_tombstones();
53 + $this->visibility_observer = null;
54 + }
144 55 }
56 + }
145 57
146 - // Identity is core, not an observer benchmark variable: every product is
147 - // born with a UUID even before the schema latch is healthy. The before-save
148 - // hook writes it in the same save.
149 - \WCPOS\WooCommercePOS\Sync\Pos_Uuid::register_hooks();
58 + /**
59 + * Declare bootstrap wiring in registration order, without installing it.
60 + *
61 + * Null hooks invoke registrars immediately; their internal priorities/arity stay
62 + * in register_hooks(). Phases keep the schema read after pre-latch hooks;
63 + * sync-latched rows are post-read hooks omitted when the latch is down.
64 + * The guard registrar MUST precede the JWT row: both register at priority 20,
65 + * after core cookie/application-password handlers. Reversing them attributes
66 + * JWT identity to prior authentication and fails open on /wc/v3/orders.
67 + *
68 + * @param bool $sync_latched Whether the verified sync schema latch is set.
69 + * @return array Ordered rows consumed by Hook_Manifest::install().
70 + */
71 + public function hook_rows( bool $sync_latched ): array {
72 + $rows = array(
73 + array(
74 + 'hook' => null,
75 + 'callback' => static function (): void {
76 + new Consent();
77 + },
78 + 'priority' => 10,
79 + 'args' => 0,
80 + 'reason' => 'Default 10; lifecycle hooks must exist during plugins_loaded, before activation/update actions.',
81 + 'phase' => 'pre-latch',
82 + ),
83 + array(
84 + 'hook' => 'woocommerce_pos_rest_api_controllers',
85 + 'callback' => array( Sync\Api::class, 'register_controllers' ),
86 + 'priority' => 10,
87 + 'args' => 1,
88 + 'reason' => 'Default; sole callback. Response registrars stay inside this filter to retain REST activation timing.',
89 + 'phase' => 'pre-latch',
90 + ),
91 + array(
92 + 'hook' => Sync\Integrity_Digest::REBUILD_HOOK,
93 + 'callback' => array( Sync\Integrity_Digest::class, 'run_scheduled_rebuild' ),
94 + 'priority' => 10,
95 + 'args' => 1,
96 + 'reason' => 'Default; sole callback. Unlatched so an already-scheduled rebuild still has a listener.',
97 + 'phase' => 'pre-latch',
98 + ),
99 + array(
100 + 'hook' => null,
101 + 'callback' => array( Sync\Meta_Normalizer::class, 'register_hooks' ),
102 + 'priority' => 10,
103 + 'args' => 0,
104 + 'reason' => 'Priority 5 before revision 9 and augmentation 10, so revisions match bare wc/v3 rereads; also serves orders.',
105 + 'phase' => 'sync-latched',
106 + ),
107 + array(
108 + 'hook' => 'woocommerce_pos_sync_serialized_order',
109 + 'callback' => array( Sync\Pos_Uuid::class, 'stamp_serialized_record' ),
110 + 'priority' => 10,
111 + 'args' => 3,
112 + 'reason' => 'After normalization at 5, in step with product stampers at 10.',
113 + 'phase' => 'sync-latched',
114 + ),
115 + array(
116 + 'hook' => null,
117 + 'callback' => array( Sync\Augmentation_Pipeline::class, 'install' ),
118 + 'priority' => 10,
119 + 'args' => 0,
120 + 'reason' => 'Revision 9 hashes normalized, unaugmented bytes; UUID/digest/projections at 10 preserve extension order, including order-pull digests.',
121 + 'phase' => 'sync-latched',
122 + ),
123 + array(
124 + 'hook' => null,
125 + 'callback' => array( Sync\Pos_Uuid::class, 'register_hooks' ),
126 + 'priority' => 10,
127 + 'args' => 0,
128 + 'reason' => 'Default 10; identity is unconditional: before-save UUIDs land in the same write and native restores re-prove ownership (ADR 0038).',
129 + 'phase' => 'post-latch',
130 + ),
131 + array(
132 + 'hook' => null,
133 + 'callback' => static function (): void {
134 + ( new Sync\Sync_Journal() )->register_hooks();
135 + },
136 + 'priority' => 10,
137 + 'args' => 0,
138 + 'reason' => 'Default 10; dirty order updates coalesce until shutdown at PHP_INT_MAX, after WooCommerce customer 10/session 20 saves.',
139 + 'phase' => 'sync-latched',
140 + ),
141 + array(
142 + 'hook' => null,
143 + 'callback' => function (): void {
144 + $this->visibility_observer = new Sync\Visibility_Observer();
145 + $this->visibility_observer->register_hooks();
146 + },
147 + 'priority' => 10,
148 + 'args' => 0,
149 + 'reason' => 'Default 10 after journal; records servable-set transitions, using generic pre-delete_option; Init then seeds tombstones.',
150 + 'phase' => 'sync-latched',
151 + ),
152 + array(
153 + 'hook' => null,
154 + 'callback' => static function (): void {
155 + ( new Sync\Sync_Journal_Purge() )->register_hooks();
156 + },
157 + 'priority' => 10,
158 + 'args' => 0,
159 + 'reason' => 'Default 10; sole cron listener; the registrar also schedules the daily purge.',
160 + 'phase' => 'sync-latched',
161 + ),
162 + array(
163 + 'hook' => null,
164 + 'callback' => static function (): void {
165 + ( new Sync\Integrity_Digest() )->register_hooks();
166 + },
167 + 'priority' => 10,
168 + 'args' => 0,
169 + 'reason' => 'Default 10, shutdown PHP_INT_MAX; journal registers first on shared hooks (reason unknown); dirty digests coalesce until flush.',
170 + 'phase' => 'sync-latched',
171 + ),
172 + array(
173 + 'hook' => 'init',
174 + 'callback' => array( $this, 'init' ),
175 + 'priority' => 10,
176 + 'args' => 1,
177 + 'reason' => 'Default 10; free services must exist before Pro init at 20.',
178 + 'phase' => 'post-latch',
179 + ),
180 + array(
181 + 'hook' => 'rest_api_init',
182 + 'callback' => array( $this, 'init_rest_api' ),
183 + 'priority' => 20,
184 + 'args' => 1,
185 + 'reason' => 'Original reason unknown (8f2b9eac); Pro deliberately registers before free at 9.',
186 + 'phase' => 'post-latch',
187 + ),
188 + array(
189 + 'hook' => 'query_vars',
190 + 'callback' => array( $this, 'query_vars' ),
191 + 'priority' => 10,
192 + 'args' => 1,
193 + 'reason' => 'Default; appends one variable.',
194 + 'phase' => 'post-latch',
195 + ),
196 + array(
197 + 'hook' => 'pre_update_option_woocommerce_pos_pro_settings_license',
198 + 'callback' => array( self::class, 'remove_license_transient' ),
199 + 'priority' => 10,
200 + 'args' => 2,
201 + 'reason' => 'Default; the reentrancy guard, not priority, makes legacy Pro license cache invalidation safe (f33b8d655).',
202 + 'phase' => 'post-latch',
203 + ),
204 + array(
205 + 'hook' => null,
206 + 'callback' => array( Rest_Cors::class, 'register_hooks' ),
207 + 'priority' => 10,
208 + 'args' => 0,
209 + 'reason' => 'Unconditional for unmarked preflights/relay; serve at 20 after core CORS at 10 so WCPOS is the last writer.',
210 + 'phase' => 'post-latch',
211 + ),
212 + array(
213 + 'hook' => 'send_headers',
214 + 'callback' => array( $this, 'send_headers' ),
215 + 'priority' => 99,
216 + 'args' => 1,
217 + 'reason' => 'Unknown beyond running late for WPSEO integration (62da70551).',
218 + 'phase' => 'post-latch',
219 + ),
220 + array(
221 + 'hook' => 'send_headers',
222 + 'callback' => array( $this, 'remove_x_frame_options' ),
223 + 'priority' => 9999,
224 + 'args' => 1,
225 + 'reason' => 'Must remove X-Frame-Options AFTER security plugins set it (80ee545a5).',
226 + 'phase' => 'post-latch',
227 + ),
228 + array(
229 + 'hook' => null,
230 + 'callback' => static function (): void {
231 + ( new Services\Core_Order_Audit_Guard() )->register_hooks();
232 + },
233 + 'priority' => 10,
234 + 'args' => 0,
235 + 'reason' => 'Auth provenance at 20 MUST register before JWT at 20, after core cookie/password auth; rest_pre_dispatch reads it at 10.',
236 + 'phase' => 'post-latch',
237 + ),
238 + array(
239 + 'hook' => null,
240 + 'callback' => array( Sync\Coupon_Modified_Date::class, 'register_hooks' ),
241 + 'priority' => 10,
242 + 'args' => 0,
243 + 'reason' => 'Default 10; unconditional meta-only coupon edit timestamps for date-based replication; journal uses wall clock, not post_modified.',
244 + 'phase' => 'post-latch',
245 + ),
246 + array(
247 + 'hook' => 'determine_current_user',
248 + 'callback' => array( $this, 'determine_current_user_early' ),
249 + 'priority' => 20,
250 + 'args' => 1,
251 + 'reason' => 'At 20 AFTER the audit guard and core cookie/password handlers; register before init, regardless of the request marker.',
252 + 'phase' => 'post-latch',
253 + ),
254 + array(
255 + 'hook' => null,
256 + 'callback' => static function (): void {
257 + ( new Services\Lifecycle_Events() )->register_hooks();
258 + },
259 + 'priority' => 10,
260 + 'args' => 0,
261 + 'reason' => 'Default 10; append after auth pair; admin_init flushes pending events and consent-gates refresh scheduling, not the cron listener.',
262 + 'phase' => 'post-latch',
263 + ),
264 + array(
265 + 'hook' => null,
266 + 'callback' => static function (): void {
267 + Services\Error_Reporter::instance()->register_hooks();
268 + },
269 + 'priority' => 10,
270 + 'args' => 0,
271 + 'reason' => 'Append after lifecycle; REST priority 999 reports the final response status, gated by consent (#1811).',
272 + 'phase' => 'post-latch',
273 + ),
274 + );
150 275
151 - if ( $sync_schema_latched ) {
152 - ( new \WCPOS\WooCommercePOS\Sync\Sync_Journal() )->register_hooks();
153 - $visibility_observer = new \WCPOS\WooCommercePOS\Sync\Visibility_Observer();
154 - $visibility_observer->register_hooks();
155 - $visibility_observer->maybe_seed_hidden_tombstones();
156 - ( new \WCPOS\WooCommercePOS\Sync\Sync_Journal_Purge() )->register_hooks();
157 - ( new \WCPOS\WooCommercePOS\Sync\Integrity_Digest() )->register_hooks();
158 - }
159 -
160 - ( new \WCPOS\WooCommercePOS\Sync\Config_Fingerprint() )->maybe_cleanup_legacy_options();
161 -
162 - // Init hooks.
163 - add_action( 'init', array( $this, 'init' ) );
164 - add_action( 'rest_api_init', array( $this, 'init_rest_api' ), 20 );
165 - add_filter( 'query_vars', array( $this, 'query_vars' ) );
166 -
167 - // Remove this once Pro settings have been moved to the new settings service.
168 - add_filter( 'pre_update_option_woocommerce_pos_pro_settings_license', array( self::class, 'remove_license_transient' ), 10, 2 );
169 -
170 - // The REST wire contract — CORS and shared-cache defeat — has a single
171 - // owner. Registered unconditionally, from here rather than from the
172 - // X-WCPOS-gated API class, because preflights carry no marker and the
173 - // relay's consent route is served without constructing API.
174 - Rest_Cors::register_hooks();
175 -
176 - // Non-REST API discoverability: the HEAD probe against the homepage.
177 - add_action( 'send_headers', array( $this, 'send_headers' ), 99, 1 );
178 - add_action( 'send_headers', array( $this, 'remove_x_frame_options' ), 9999, 1 );
179 -
180 - /*
181 - * Add the global JWT authentication filter and its core-route audit guard.
182 - *
183 - * Hook order: plugins_loaded -> init (determine_current_user) -> rest_api_init
184 - *
185 - * This filter runs at priority 20, after WordPress core's cookie auth handlers.
186 - * It must be registered here (during plugins_loaded) because determine_current_user
187 - * fires during 'init', which is BEFORE rest_api_init where our API class loads.
188 - * Because it authenticates WCPOS Bearer tokens on EVERY
189 - * REST request (marked or not), the audit-meta guard for core routes
190 - * must be registered just as unconditionally — never from the
191 - * X-WCPOS-gated API class, whose marker an attacker simply omits.
192 - * Registering it first lets its priority-20 provenance filter run after
193 - * core's cookie handlers but before WCPOS's JWT filter.
194 - */
195 - ( new Services\Core_Order_Audit_Guard() )->register_hooks();
196 -
197 - // Coupon post-date touch. Unconditional and lane-agnostic on purpose: a
198 - // meta-only coupon edit (amount, discount_type, usage limits) never moves
199 - // post_modified, and the client's catalogue replication is date-based
200 - // (?modified_after, filtered by WooCommerce on post_modified_gmt), so an
201 - // untouched coupon is invisible to every other till. That is true whether
202 - // the edit came from the POS, wp-admin, WP-CLI or another plugin — so this
203 - // sits outside the schema latch above because it does not use the v2 sync
204 - // tables.
205 - \WCPOS\WooCommercePOS\Sync\Coupon_Modified_Date::register_hooks();
206 -
207 - add_filter( 'determine_current_user', array( $this, 'determine_current_user_early' ), 20 );
208 -
209 - // Install lifecycle reporting. Registered last: it adds no filter that
210 - // anything else orders against, and appending keeps the ordering table
211 - // above in statement order. Deliberately NOT before the pair above —
212 - // rows 20 and 23 are decided by insertion order alone.
213 - ( new Services\Lifecycle_Events() )->register_hooks();
276 + return array_values(
277 + array_filter(
278 + $rows,
279 + static function ( array $row ) use ( $sync_latched ): bool {
280 + return $sync_latched || 'sync-latched' !== $row['phase'];
281 + }
282 + )
283 + );
214 284 }
215 285
216 286 /**
217 287 * Clear cached data that depends on the Pro license.
@@ -436,41 +506,70 @@
436 506 }
437 507 }
438 508
439 509 /**
440 - * Common initializations.
510 + * Common initializations, by request lane.
511 + *
512 + * Every request gets the always group; everything else is constructed only
513 + * on the lanes that use it, and the order group additionally on the first
514 + * order write of ANY request, so the lane classifier is an optimisation
515 + * rather than a correctness gate. {@see Service_Groups} holds the membership
516 + * of each group and the reasons behind it.
517 + *
518 + * Measured 2026-09-03: a storefront page loaded ~80 plugin files and 22
519 + * objects for hooks that never fire there (see
520 + * .claude/research/2026-09-03-lazy-service-construction-spec.md).
441 521 */
442 522 private function init_common(): void {
443 - // init the Services.
444 - SettingsService::instance();
445 - AuthService::instance();
446 - Extensions::instance();
447 - Receipt_Snapshot_Store::instance();
523 + Service_Groups::ensure( Service_Groups::ALWAYS );
448 524
449 - // init other functionality needed by both frontend and admin.
450 - new i18n();
451 - new Gateways();
452 - new Products();
453 - new Orders();
454 - new Emails();
455 - new Templates();
456 - Services\Stock_Validator::instance();
457 - new Services\Decimal_Quantities();
458 - new Services\Customer_Meta_Parity();
459 - new Services\Print_Job_Service();
460 - new Services\Cloud_Print_Trigger_Service();
461 - new Services\Cloud_Print_Submit_Service();
462 - new Services\Cloud_Print_Relay_Service();
525 + if ( Services\Request_Lane::is_storefront() ) {
526 + // Order-event services arrive on the first order write, if any.
527 + Service_Groups::arm_order_group();
528 + return;
529 + }
530 +
531 + Service_Groups::ensure( Service_Groups::ORDER );
532 + Service_Groups::ensure( Service_Groups::POS );
463 533 }
464 534
465 535 /**
536 + * Construct the order-event services exactly once per request.
537 + *
538 + * Idempotent and safe to call after `init`; each service handles its own
539 + * late registration. Fires `woocommerce_pos_order_services_ready` once so
540 + * Pro and extensions can construct their own order-event services at the
541 + * same moment on every lane. Implementation now lives in Service_Groups.
542 + */
543 + public static function ensure_order_services(): void {
544 + Service_Groups::ensure( Service_Groups::ORDER );
545 + }
546 +
547 + /**
548 + * Forget which groups were constructed. Tests only.
549 + *
550 + * @internal
551 + */
552 + public static function reset_request_state(): void {
553 + Service_Groups::reset();
554 + Services\Request_Lane::reset();
555 + }
556 +
557 + /**
466 558 * Frontend specific initializations.
467 559 */
468 560 private function init_frontend(): void {
469 - if ( ! is_admin() ) {
561 + if ( is_admin() ) {
562 + return;
563 + }
564 + // The public receipt shortcode and the My Account receipt action are
565 + // storefront features; they construct the template services when used.
566 + new Storefront_Receipts();
567 + if ( ! Services\Request_Lane::is_storefront() ) {
568 + // The POS routes (rewrite rules, checkout context, order-pay and
569 + // coupon forms) only matter on requests the classifier saw as POS.
470 570 new Template_Router();
471 571 new Form_Handler();
472 - new Storefront_Receipts();
473 572 }
474 573 }
475 574
476 575 /**
@@ -505,7 +604,17 @@
505 604 }
506 605
507 606 // wePOS alters the WooCommerce REST API, breaking the expected schema
508 607 // It's very bad form on their part, but we need to work around it.
509 - new Integrations\WePOS();
608 + // Its only hook is admin_init (a conflict notice), so admin lane only.
609 + if ( is_admin() ) {
610 + new Integrations\WePOS();
611 + }
612 +
613 + // WooCommerce Tax - https://wordpress.org/plugins/woocommerce-services/
614 + // Its class exists whenever the plugin is active, but its callbacks are
615 + // only hooked when automated taxes are on and the store country is
616 + // supported, so the integration looks them up on the hooks at
617 + // recalculation time instead of gating on the class here.
618 + new Integrations\WooCommerce_Tax();
510 619 }
511 620 }