Make low fuel theshold configurable

package.json

@@ -31,6 +31,7 @@
             "PKJS_READY",
             "PKJS_TEMP_BAR_COUNT",
             "CLAY_SHOW_TIME_MG",
+            "CLAY_LOW_FUEL_BARS",
             "CLAY_LED_COLOR",
             "CLAY_BG_COLOR",
             "CLAY_BAR_MG_COLOR",

src/c/main.c

@@ -53,10 +53,10 @@ static const uint8_t s_bar_spacing = s_bar_height + 1;
 static void batt_callback(BatteryChargeState state) {
 	s_batt_level = state.charge_percent / 5;
 	layer_mark_dirty(s_fuel_layer);
-	if (!s_low_fuel_indicator && s_batt_level < 5) {
+	if (!s_low_fuel_indicator && s_batt_level <= settings.LowFuelBars) {
 		replace_gbitmap_color(s_applied_fg, GColorChromeYellow, s_e_icon, s_e_layer);
 		s_low_fuel_indicator = true;
-	} else if (s_low_fuel_indicator && s_batt_level > 4) {
+	} else if (s_low_fuel_indicator && s_batt_level > settings.LowFuelBars) {
 		replace_gbitmap_color(GColorChromeYellow, s_applied_fg, s_e_icon, s_e_layer);
 		s_low_fuel_indicator = false;
 	}
@@ -182,6 +182,9 @@ static void apply_settings(bool first_run) {
 		replace_gbitmap_color(s_applied_fg, settings.ColorFG, s_f_icon, s_f_layer);
 		s_applied_fg = settings.ColorFG;
 	}
+
+	// changes to low fuel threshold
+	batt_callback(battery_state_service_peek());
 }
 
 static void main_window_load() {
@@ -298,6 +301,7 @@ static void inbox_received_handler(DictionaryIterator *iter, void *context) {
 
 	// CLAY SETTINGS
 	Tuple *show_time_mg_tuple = dict_find(iter, MESSAGE_KEY_CLAY_SHOW_TIME_MG);
+	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);
 	Tuple *color_mg_bar_tuple = dict_find(iter, MESSAGE_KEY_CLAY_BAR_MG_COLOR);
@@ -306,6 +310,9 @@ static void inbox_received_handler(DictionaryIterator *iter, void *context) {
 	if (show_time_mg_tuple) {
 		settings.ShowTimeMG = show_time_mg_tuple->value->uint8;
 	}
+	if (low_fuel_bars_tuple) {
+		settings.LowFuelBars = low_fuel_bars_tuple->value->uint8;
+	}
 	if (color_led_tuple) {
 		settings.ColorLED = GColorFromHEX(color_led_tuple->value->int32);
 	}
@@ -331,6 +338,7 @@ static void init() {
 		persist_read_data(STORAGE_KEY_SETTINGS, &settings, sizeof(settings));
 	} else {
 		settings.ShowTimeMG = false;
+		settings.LowFuelBars = 2;
 		settings.ColorLED = GColorWhite;
 		settings.ColorBG = GColorBlue;
 		settings.ColorMGBars = GColorDarkGray;

src/c/settings.h

@@ -5,6 +5,7 @@
 
 typedef struct ClaySettings {
   bool ShowTimeMG;
+  uint8_t LowFuelBars;
   GColor ColorLED;
   GColor ColorBG;
   GColor ColorMGBars;

src/pkjs/config.js

@@ -17,6 +17,38 @@ module.exports = [
                 "messageKey": "CLAY_SHOW_TIME_MG",
                 "defaultValue": false,
                 "label": "Show time segments midground"
+            },
+            {
+                "type": "select",
+                "messageKey": "CLAY_LOW_FUEL_BARS",
+                "defaultValue": 10,
+                "label": "Low fuel percentage",
+                "options": [
+                    {
+                        "label": "disabled",
+                        "value": 21,
+                    },
+                    {
+                        "label": "10%",
+                        "value": 2,
+                    },
+                    {
+                        "label": "20%",
+                        "value": 4,
+                    },
+                    {
+                        "label": "30%",
+                        "value": 6,
+                    },
+                    {
+                        "label": "40%",
+                        "value": 8,
+                    },
+                    {
+                        "label": "50%",
+                        "value": 10,
+                    }
+                ]
             }
         ]
     },