Make BT indicator optional (and off by default)

src/c/main.c

@@ -294,6 +294,15 @@ static void apply_settings(bool first_run) {
 	if (settings.DateTimeoutSecs != 0) {
 		accel_tap_service_subscribe(accel_tap_handler);
 	}
+
+	// re-sub bt tracking
+	connection_service_unsubscribe();
+	if (settings.TrackBTStatus) {
+		connection_service_subscribe((ConnectionHandlers){.pebble_app_connection_handler = bt_callback});
+		bt_callback(connection_service_peek_pebble_app_connection());
+	} else {
+		bt_callback(true);
+	}
 }
 
 static void main_window_load() {
@@ -333,6 +342,7 @@ static void main_window_load() {
 }
 
 static void main_window_unload() {
+	connection_service_unsubscribe();
 	accel_tap_service_unsubscribe();
 	layer_destroy(s_fuel_mg_layer);
 	layer_destroy(s_temp_mg_layer);
@@ -364,8 +374,9 @@ static void inbox_received_handler(DictionaryIterator *iter, void *context) {
 	}
 
 	// CLAY SETTINGS
-	Tuple *date_timeout_tuple = dict_find(iter, MESSAGE_KEY_CLAY_DATE_TIMEOUT);
+	Tuple *track_bt_tuple = dict_find(iter, MESSAGE_KEY_CLAY_BT_INDICATOR);
 	Tuple *show_time_mg_tuple = dict_find(iter, MESSAGE_KEY_CLAY_SHOW_TIME_MG);
+	Tuple *date_timeout_tuple = dict_find(iter, MESSAGE_KEY_CLAY_DATE_TIMEOUT);
 	Tuple *low_fuel_bars_tuple = dict_find(iter, MESSAGE_KEY_CLAY_LOW_FUEL_BARS);
 	Tuple *color_led_tuple = dict_find(iter, MESSAGE_KEY_CLAY_LED_COLOR);
 	Tuple *color_bg_tuple = dict_find(iter, MESSAGE_KEY_CLAY_BG_COLOR);
@@ -375,12 +386,15 @@ static void inbox_received_handler(DictionaryIterator *iter, void *context) {
 	Tuple *color_mg_time_tuple = dict_find(iter, MESSAGE_KEY_CLAY_TIME_MG_COLOR);
 	Tuple *color_fg_tuple = dict_find(iter, MESSAGE_KEY_CLAY_FG_COLOR);
 	Tuple *color_warning_tuple = dict_find(iter, MESSAGE_KEY_CLAY_WARNING_COLOR);
-	if (date_timeout_tuple) {
-		settings.DateTimeoutSecs = date_timeout_tuple->value->uint8;
+	if (track_bt_tuple) {
+		settings.TrackBTStatus = track_bt_tuple->value->uint8;
 	}
 	if (show_time_mg_tuple) {
 		settings.ShowTimeMG = show_time_mg_tuple->value->uint8;
 	}
+	if (date_timeout_tuple) {
+		settings.DateTimeoutSecs = date_timeout_tuple->value->uint8;
+	}
 	if (low_fuel_bars_tuple) {
 		settings.LowFuelBars = low_fuel_bars_tuple->value->uint8;
 	}
@@ -417,8 +431,9 @@ static void init() {
 	if (persist_exists(STORAGE_KEY_SETTINGS)) {
 		persist_read_data(STORAGE_KEY_SETTINGS, &settings, sizeof(settings));
 	} else {
-		settings.DateTimeoutSecs = 3;
+		settings.TrackBTStatus = false;
 		settings.ShowTimeMG = false;
+		settings.DateTimeoutSecs = 3;
 		settings.LowFuelBars = 2;
 		settings.ColorLED = GColorWhite;
 		settings.ColorBG = GColorBlue;
@@ -457,7 +472,6 @@ static void init() {
 
 	update_minute_1();
 	batt_callback(battery_state_service_peek());
-	bt_callback(connection_service_peek_pebble_app_connection());
 
 	app_message_register_inbox_received(inbox_received_handler);
 	app_message_open(255, 64);
@@ -470,7 +484,6 @@ static void init() {
 
 	tick_timer_service_subscribe(MINUTE_UNIT, minute_handler);
 	battery_state_service_subscribe(batt_callback);
-	connection_service_subscribe((ConnectionHandlers){.pebble_app_connection_handler = bt_callback});
 }
 
 static void deinit() {

src/c/settings.h

@@ -4,8 +4,9 @@
 #define STORAGE_KEY_SETTINGS 69
 
 typedef struct ClaySettings {
-  uint8_t DateTimeoutSecs;
+  bool TrackBTStatus;
   bool ShowTimeMG;
+  uint8_t DateTimeoutSecs;
   uint8_t LowFuelBars;
   GColor ColorLED;
   GColor ColorBG;

src/pkjs/config.js

@@ -19,6 +19,14 @@ module.exports = [
                 "label": "Show time segments midground",
                 "description": "Show or hide the unlit segments behind the time."
             },
+            {
+                "id": "bt_indicator_toggle",
+                "type": "toggle",
+                "messageKey": "CLAY_BT_INDICATOR",
+                "defaultValue": false,
+                "label": "BT disconnect indicator",
+                "description": "Change the color of the digits to the configured warning color when the connection to the phone is lost."
+            },
             {
                 "type": "slider",
                 "messageKey": "CLAY_DATE_TIMEOUT",