statusweather: Add night symbols, change some symbols.

The only day→night change at the moment is for clear sky.

statusweather.cpp

@@ -36,6 +36,7 @@
 #include <string_view>
 #include <thread>
 #include <tuple>
+#include <utility>
 
 struct weather
 {
@@ -48,22 +49,28 @@ std::mutex mutex_weather;
 std::string map_icon(const std::string_view icon_id)
 {
     // <https://openweathermap.org/weather-conditions>
-    const std::map<std::uint8_t, std::string> icons{{{1, "🌞"},
-                                                     {2, "⛅"},
-                                                     {3, "☁"},
-                                                     {4, "☁"},
-                                                     {9, "🌧"},
-                                                     {10, "🌧"},
-                                                     {10, "⛈"},
-                                                     {13, "🌨"},
-                                                     {50, "🌫"}}};
-    // TODO: Differenciate between day and night.
+    // NOTE: There does not seem to be weather emojis with the moon in unicode.
+    const std::map<std::uint8_t, std::pair<std::string, std::string>> icons{
+        {{1, {"🌞", "🌝"}},          // clear sky
+         {2, {"🌤", "🌤"}},    // few clouds
+         {3, {"⛅", "⛅"}},          // scattered clouds
+         {4, {"☁", "☁"}},          // broken clouds
+         {9, {"🌧", "🌧"}},    // shower rain
+         {10, {"🌧", "🌧"}},   // rain
+         {10, {"🌩", "🌩"}},   // thunderstorm
+         {13, {"🌨", "🌨"}},   // snow
+         {50, {"🌫", "🌫"}}}}; // mist
     const auto icon{icons.find(std::stoul(icon_id.data()))};
+
     if (icon != icons.end())
     {
-        return icon->second;
+        if (*icon_id.rbegin() == 'n') // Night
+        {
+            return icon->second.second;
+        }
+        return icon->second.first;
     }
-    return {};
+    return "❔";
 }
 
 std::tuple<std::string, std::string> get_options()