Import of the watch repository from Pebble

src/fw/services/normal/wakeup.h

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+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "services/common/new_timer/new_timer.h"
+
+//! @internal
+//! Event window is (in seconds) a reserved amount of time each wakeup_event receives
+//! in which other wakeup events cannot be scheduled
+#define WAKEUP_EVENT_WINDOW 60 
+//! @internal
+//! Number of wakeup events allowed per application (UUID)
+#define MAX_WAKEUP_EVENTS_PER_APP 8
+//! @internal
+//! Reduced event window or gap for catching up on missed events due to a time change
+//! or the service being disabled by the system (Power saving mode).
+#define WAKEUP_CATCHUP_WINDOW (WAKEUP_EVENT_WINDOW / 2)
+
+//! WakeupId is an identifier for a wakeup event
+typedef int32_t WakeupId;
+
+//! WakeupInfo is used to pass the wakeup event id and reason
+//! to the application that requested the wakeup event
+typedef struct {
+  WakeupId wakeup_id;     //!< Identifier (Timestamp) of the wakeup event
+  int32_t wakeup_reason;  //!< App provided reason for the wakeup event
+} WakeupInfo;
+
+//! @internal
+//! This function initializes the wakeup service.  
+//! Triggers a popup notification for any apps that missed a 
+//! wakeup_event while the Pebble was off and specified 
+//! notify_if_missed while scheduling the event.
+//! Deletes all expired wakeup_events from "wakeup" settings_file and
+//! schedules the next wakeup_event using a new_timer
+void wakeup_init(void);
+
+//! @internal
+//! This function enables and disables the wakeup service.
+void wakeup_enable(bool enabled);
+
+//! @internal
+//! This function enables unit testing of the current wakeup event
+TimerID wakeup_get_current(void);
+
+//! @internal
+//! This function is used for testing and gets the next scheduled wakeup id
+WakeupId wakeup_get_next_scheduled(void);
+
+//! @internal
+//! This function is used for migrating wakeup events after a timezone set
+void wakeup_migrate_timezone(int utc_diff);
+
+//! @internal
+////! This function is used for updating wakeup events after a time change
+void wakeup_handle_clock_change(void);