Add time since last weather update to weather app

Author: JustScott

src/displayapp/screens/Weather.cpp

@@ -35,8 +35,10 @@ namespace {
   }
 }
 
-Weather::Weather(Controllers::Settings& settingsController, Controllers::SimpleWeatherService& weatherService)
-  : settingsController {settingsController}, weatherService {weatherService} {
+Weather::Weather(Controllers::Settings& settingsController,
+                 Controllers::SimpleWeatherService& weatherService,
+                 Controllers::DateTime& dateTimeController)
+  : settingsController {settingsController}, weatherService {weatherService}, dateTimeController {dateTimeController} {
 
   temperature = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(temperature, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, LV_COLOR_WHITE);
@@ -45,6 +47,11 @@ Weather::Weather(Controllers::Settings& settingsController, Controllers::SimpleW
   lv_obj_align(temperature, nullptr, LV_ALIGN_CENTER, 0, -30);
   lv_obj_set_auto_realign(temperature, true);
 
+  lastUpdated = lv_label_create(lv_scr_act(), nullptr);
+  lv_obj_set_style_local_text_color(lastUpdated, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, Colors::bg);
+  lv_label_set_text_fmt(lastUpdated, "");
+  lv_obj_align(lastUpdated, nullptr, LV_ALIGN_CENTER, -40, 0);
+
   minTemperature = lv_label_create(lv_scr_act(), nullptr);
   lv_obj_set_style_local_text_color(minTemperature, LV_LABEL_PART_MAIN, LV_STATE_DEFAULT, Colors::bg);
   lv_label_set_text(minTemperature, "");
@@ -137,6 +144,18 @@ void Weather::Refresh() {
       lv_label_set_text_fmt(temperature, "%d°%c", temp, tempUnit);
       lv_label_set_text_fmt(minTemperature, "%d°", minTemp);
       lv_label_set_text_fmt(maxTemperature, "%d°", maxTemp);
+
+      int64_t secondsSinceEpoch = dateTimeController.CurrentDateTime().time_since_epoch().count() / 1000000000;
+      int64_t secondsSinceWeatherUpdate = secondsSinceEpoch - optCurrentWeather->timestamp;
+      if (secondsSinceWeatherUpdate < 0) {
+        lv_label_set_text_fmt(lastUpdated, "0s old", secondsSinceWeatherUpdate);
+      } else if (secondsSinceWeatherUpdate < 60) {
+        lv_label_set_text_fmt(lastUpdated, "%ds old", secondsSinceWeatherUpdate);
+      } else if (secondsSinceWeatherUpdate > 59 && secondsSinceWeatherUpdate < 3600) {
+        lv_label_set_text_fmt(lastUpdated, "%dm old", secondsSinceWeatherUpdate / 60);
+      } else if (secondsSinceWeatherUpdate > 3599) {
+        lv_label_set_text_fmt(lastUpdated, "%dh old", secondsSinceWeatherUpdate / 3600);
+      }
     } else {
       lv_label_set_text(icon, "");
       lv_label_set_text(condition, "");

src/displayapp/screens/Weather.h

@@ -4,6 +4,7 @@
 #include <lvgl/lvgl.h>
 #include "displayapp/screens/Screen.h"
 #include "components/ble/SimpleWeatherService.h"
+#include "components/datetime/DateTimeController.h"
 #include "displayapp/apps/Apps.h"
 #include "displayapp/Controllers.h"
 #include "Symbols.h"
@@ -20,21 +21,25 @@ namespace Pinetime {
 
       class Weather : public Screen {
       public:
-        Weather(Controllers::Settings& settingsController, Controllers::SimpleWeatherService& weatherService);
+        Weather(Controllers::Settings& settingsController,
+                Controllers::SimpleWeatherService& weatherService,
+                Controllers::DateTime& dateTimeController);
         ~Weather() override;
 
         void Refresh() override;
 
       private:
         Controllers::Settings& settingsController;
         Controllers::SimpleWeatherService& weatherService;
+        Controllers::DateTime& dateTimeController;
 
         Utility::DirtyValue<std::optional<Controllers::SimpleWeatherService::CurrentWeather>> currentWeather {};
         Utility::DirtyValue<std::optional<Controllers::SimpleWeatherService::Forecast>> currentForecast {};
 
         lv_obj_t* icon;
         lv_obj_t* condition;
         lv_obj_t* temperature;
+        lv_obj_t* lastUpdated;
         lv_obj_t* minTemperature;
         lv_obj_t* maxTemperature;
         lv_obj_t* forecast;
@@ -49,7 +54,7 @@ namespace Pinetime {
       static constexpr const char* icon = Screens::Symbols::cloudSunRain;
 
       static Screens::Screen* Create(AppControllers& controllers) {
-        return new Screens::Weather(controllers.settingsController, *controllers.weatherController);
+        return new Screens::Weather(controllers.settingsController, *controllers.weatherController, controllers.dateTimeController);
       };
     };
   }