Import of the watch repository from Pebble

src/fw/applib/connection_service.c

@@ -0,0 +1,105 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "connection_service.h"
+#include "connection_service_private.h"
+
+#include "applib/event_service_client.h"
+#include "kernel/events.h"
+#include "services/common/debounced_connection_service.h"
+#include "services/common/event_service.h"
+#include "syscall/syscall.h"
+#include "system/passert.h"
+
+#include "process_state/app_state/app_state.h"
+#include "process_state/worker_state/worker_state.h"
+
+static ConnectionServiceState* prv_get_state(void) {
+  PebbleTask task = pebble_task_get_current();
+
+  if (task == PebbleTask_App) {
+    return app_state_get_connection_service_state();
+  } else if (task == PebbleTask_Worker) {
+    return worker_state_get_connection_service_state();
+  }
+
+  WTF;
+}
+
+static void prv_do_handle(PebbleEvent *e, void *context) {
+  ConnectionServiceState *state = prv_get_state();
+  bool connected = e->bluetooth.comm_session_event.is_open;
+
+  ConnectionHandler handler =
+      (e->bluetooth.comm_session_event.is_system ?
+       state->handlers.pebble_app_connection_handler :
+       state->handlers.pebblekit_connection_handler);
+
+  if (handler) {
+    if (!connected) {
+      sys_analytics_inc(ANALYTICS_DEVICE_METRIC_APP_NOTIFIED_DISCONNECTED_COUNT,
+                      AnalyticsClient_System);
+    }
+    handler(connected);
+  }
+}
+
+bool connection_service_peek_pebble_app_connection(void) {
+  return sys_mobile_app_is_connected_debounced();
+}
+
+bool connection_service_peek_pebblekit_connection(void) {
+  return sys_pebblekit_is_connected_debounced();
+}
+
+void connection_service_unsubscribe(void) {
+  ConnectionServiceState *state = prv_get_state();
+  event_service_client_unsubscribe(&state->bcs_info);
+  memset(&state->handlers, 0x0, sizeof(state->handlers));
+}
+
+void connection_service_subscribe(ConnectionHandlers conn_handlers) {
+  ConnectionServiceState *state = prv_get_state();
+  state->handlers = conn_handlers;
+  event_service_client_subscribe(&state->bcs_info);
+}
+
+void connection_service_state_init(ConnectionServiceState *state) {
+  *state = (ConnectionServiceState) {
+    .bcs_info = {
+      .type = PEBBLE_BT_CONNECTION_DEBOUNCED_EVENT,
+      .handler = prv_do_handle,
+    },
+  };
+}
+
+// Deprecated routines kept around for backward compile compatibility
+
+void bluetooth_connection_service_subscribe(ConnectionHandler handler) {
+  ConnectionHandlers conn_handlers = {
+    .pebble_app_connection_handler = handler,
+    .pebblekit_connection_handler = NULL
+  };
+  connection_service_subscribe(conn_handlers);
+}
+
+void bluetooth_connection_service_unsubscribe(void) {
+  connection_service_unsubscribe();
+}
+
+bool bluetooth_connection_service_peek(void) {
+  return connection_service_peek_pebble_app_connection();
+}