Dump/Restore most of model in application state

Refs: #57

NEWS.md

@@ -10,6 +10,9 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ### Added
 
+- Dump/Restore most of model in application state
+  [#57](https://github.com/orontee/taranis/issues/57)
+
 - Configuration to preserve device being offline
   [#57](https://github.com/orontee/taranis/issues/57)
 

src/convert.cc

@@ -0,0 +1,281 @@
+#include "convert.h"
+#include "experimental/optional"
+#include "model.h"
+
+namespace taranis {
+
+// NAN is written as null by jsoncpp, this will fix deserialization
+
+inline double deserialize_possible_null(const Json::Value &value) {
+  if (value.isNull()) {
+    return NAN;
+  }
+  return value.asDouble();
+}
+
+Json::Value to_json(const Location &location) {
+  Json::Value value;
+  value["longitude"] = location.longitude;
+  value["latitude"] = location.latitude;
+  value["name"] = location.name;
+  value["country"] = location.country;
+  value["state"] = location.state;
+
+  return value;
+}
+
+Json::Value to_json(const Condition &condition) {
+  Json::Value value;
+  value["date"] = static_cast<int64_t>(condition.date);
+  value["sunrise"] = static_cast<int64_t>(condition.sunrise);
+  value["sunset"] = static_cast<int64_t>(condition.sunset);
+  value["temperature"] = condition.temperature;
+  value["felt_temperature"] = condition.felt_temperature;
+  value["pressure"] = condition.pressure;
+  value["humidity"] = condition.humidity;
+  value["uv_index"] = condition.uv_index;
+  value["clouds"] = condition.clouds;
+  value["visibility"] = condition.visibility;
+  value["probability_of_precipitation"] =
+      condition.probability_of_precipitation;
+  value["wind_speed"] = condition.wind_speed;
+  value["wind_degree"] = condition.wind_degree;
+  value["wind_gust"] = condition.wind_gust;
+  value["weather"] = condition.weather;
+  value["weather_description"] = condition.weather_description;
+  value["weather_icon_name"] = condition.weather_icon_name;
+  value["rain"] = condition.rain;
+  value["snow"] = condition.snow;
+
+  return value;
+}
+
+Json::Value to_json(const DailyCondition &condition) {
+  Json::Value value;
+  value["date"] = static_cast<int64_t>(condition.date);
+  value["sunrise"] = static_cast<int64_t>(condition.sunrise);
+  value["sunset"] = static_cast<int64_t>(condition.sunset);
+  value["moonrise"] = static_cast<int64_t>(condition.moonrise);
+  value["moonset"] = static_cast<int64_t>(condition.moonset);
+  value["moon_phase"] = condition.moon_phase;
+  value["pressure"] = condition.pressure;
+  value["humidity"] = condition.humidity;
+  value["dew_point"] = condition.dew_point;
+  value["wind_speed"] = condition.wind_speed;
+  value["wind_degree"] = condition.wind_degree;
+  value["wind_gust"] = condition.wind_gust;
+  value["clouds"] = condition.clouds;
+  value["probability_of_precipitation"] =
+      condition.probability_of_precipitation;
+  value["uv_index"] = condition.uv_index;
+  value["rain"] = condition.rain;
+  value["snow"] = condition.snow;
+  value["weather"] = condition.weather;
+  value["weather_description"] = condition.weather_description;
+  value["weather_icon_name"] = condition.weather_icon_name;
+  value["temperature_day"] = condition.temperature_day;
+  value["temperature_min"] = condition.temperature_min;
+  value["temperature_max"] = condition.temperature_max;
+  value["temperature_night"] = condition.temperature_night;
+  value["temperature_evening"] = condition.temperature_evening;
+  value["temperature_morning"] = condition.temperature_morning;
+  value["felt_temperature_day"] = condition.felt_temperature_day;
+  value["felt_temperature_night"] = condition.felt_temperature_night;
+  value["felt_temperature_evening"] = condition.felt_temperature_evening;
+  value["felt_temperature_morning"] = condition.felt_temperature_morning;
+
+  return value;
+}
+
+Json::Value to_json(const Alert &alert) {
+  Json::Value value;
+  value["sender"] = alert.sender;
+  value["event"] = alert.event;
+  value["start_date"] = static_cast<int64_t>(alert.start_date);
+  value["end_date"] = static_cast<int64_t>(alert.end_date);
+  value["description"] = alert.description;
+  return value;
+}
+
+Json::Value to_json(const HistoryItem &item) {
+  Json::Value value;
+  value["location"] = to_json(item.location);
+  value["favorite"] = item.favorite;
+
+  return value;
+}
+
+Json::Value to_json(const Model &model) {
+  Json::Value value;
+  value["source"] = model.source;
+  value["unit_system"] = model.unit_system;
+  value["refresh_date"] = static_cast<int64_t>(model.refresh_date);
+  value["location"] = to_json(model.location);
+
+  if (model.current_condition) {
+    value["current_condition"] = to_json(*model.current_condition);
+  } else {
+    value["current_condition"] = Json::Value::null;
+  }
+  for (const auto &forecast : model.hourly_forecast) {
+    value["hourly_forecast"].append(to_json(forecast));
+  }
+  for (const auto &forecast : model.daily_forecast) {
+    value["daily_forecast"].append(to_json(forecast));
+  }
+  for (const auto &alert : model.alerts) {
+    value["alerts"].append(to_json(alert));
+  }
+  for (const auto &item : model.location_history) {
+    value["location_history"].append(to_json(item));
+  }
+  return value;
+}
+
+void update_from_json(Location &location, const Json::Value &value) {
+  location.longitude = deserialize_possible_null(value["longitude"]);
+  location.latitude = deserialize_possible_null(value["latitude"]);
+  location.name = value.get("name", "").asString();
+  location.country = value.get("country", "").asString();
+  location.state = value.get("state", "").asString();
+}
+
+void update_from_json(Condition &condition, const Json::Value &value) {
+  condition.date =
+      static_cast<std::time_t>(value.get("date", 0).asLargestInt());
+  condition.sunrise =
+      static_cast<std::time_t>(value.get("sunrise", 0).asLargestInt());
+  condition.sunset =
+      static_cast<std::time_t>(value.get("sunset", 0).asLargestInt());
+  condition.temperature = deserialize_possible_null(value["temperature"]);
+  condition.felt_temperature =
+      deserialize_possible_null(value["felt_temperature"]);
+  condition.pressure = value.get("pressure", 0).asInt();
+  condition.humidity = value.get("humidity", 0).asInt();
+  condition.uv_index = deserialize_possible_null(value["uv_index"]);
+  condition.clouds = value.get("clouds", 0).asInt();
+  condition.visibility = value.get("visibility", 0).asInt();
+  condition.probability_of_precipitation =
+      deserialize_possible_null(value["probability_of_precipitation"]);
+  condition.wind_speed = deserialize_possible_null(value["wind_speed"]);
+  condition.wind_degree = value.get("wind_degree", 0).asInt();
+  condition.wind_gust = deserialize_possible_null(value["wind_gust"]);
+  condition.weather =
+      static_cast<Weather>(value.get("weather", CLEAR_SKY).asInt());
+  condition.weather_description =
+      value.get("weather_description", "").asString();
+  condition.weather_icon_name = value.get("weather_icon_name", "").asString();
+  condition.rain = deserialize_possible_null(value["rain"]);
+  condition.snow = deserialize_possible_null(value["snow"]);
+}
+
+void update_from_json(DailyCondition &condition, const Json::Value &value) {
+  condition.date =
+      static_cast<std::time_t>(value.get("date", 0).asLargestInt());
+  condition.sunrise =
+      static_cast<std::time_t>(value.get("sunrise", 0).asLargestInt());
+  condition.sunset =
+      static_cast<std::time_t>(value.get("sunset", 0).asLargestInt());
+  condition.moonrise =
+      static_cast<std::time_t>(value.get("moonrise", 0).asLargestInt());
+  condition.moonset =
+      static_cast<std::time_t>(value.get("moonset", 0).asLargestInt());
+  condition.moon_phase = deserialize_possible_null(value["moon_phase"]);
+  condition.pressure = value.get("pressure", 0).asInt();
+  condition.humidity = value.get("humidity", 0).asInt();
+  condition.dew_point = deserialize_possible_null(value["dew_point"]);
+  condition.wind_speed = deserialize_possible_null(value["wind_speed"]);
+  condition.wind_degree = value.get("wind_degree", 0).asInt();
+  condition.wind_gust = deserialize_possible_null(value["wind_gust"]);
+  condition.clouds = value.get("clouds", 0).asInt();
+  condition.probability_of_precipitation =
+      deserialize_possible_null(value["probability_of_precipitation"]);
+  condition.uv_index = deserialize_possible_null(value["uv_index"]);
+  condition.rain = deserialize_possible_null(value["rain"]);
+  condition.snow = deserialize_possible_null(value["snow"]);
+  condition.weather =
+      static_cast<Weather>(value.get("weather", CLEAR_SKY).asInt());
+  condition.weather_description =
+      value.get("weather_description", "").asString();
+  condition.weather_icon_name = value.get("weather_icon_name", "").asString();
+  condition.temperature_day =
+      deserialize_possible_null(value["temperature_day"]);
+  condition.temperature_min =
+      deserialize_possible_null(value["temperature_min"]);
+  condition.temperature_max =
+      deserialize_possible_null(value["temperature_max"]);
+  condition.temperature_night =
+      deserialize_possible_null(value["temperature_night"]);
+  condition.temperature_evening =
+      deserialize_possible_null(value["temperature_evening"]);
+  condition.temperature_morning =
+      deserialize_possible_null(value["temperature_morning"]);
+  condition.felt_temperature_day =
+      deserialize_possible_null(value["felt_temperature_day"]);
+  condition.felt_temperature_night =
+      deserialize_possible_null(value["felt_temperature_night"]);
+  condition.felt_temperature_evening =
+      deserialize_possible_null(value["felt_temperature_evening"]);
+  condition.felt_temperature_morning =
+      deserialize_possible_null(value["felt_temperature_morning"]);
+}
+
+void update_from_json(Alert &alert, const Json::Value &value) {
+  alert.sender = value.get("sender", "").asString();
+  alert.event = value.get("event", "").asString();
+  alert.start_date =
+      static_cast<std::time_t>(value.get("start_date", 0).asLargestInt());
+  alert.end_date =
+      static_cast<std::time_t>(value.get("end_date", 0).asLargestInt());
+  alert.description = value.get("description", "").asString();
+}
+
+void update_from_json(HistoryItem &item, const Json::Value &value) {
+  auto &location = item.location;
+  const auto &location_value = value["location"];
+  update_from_json(location, location_value);
+
+  item.favorite = value.get("favorite", false).asBool();
+}
+
+void update_from_json(Model &model, const Json::Value &value) {
+  model.source = value.get("source", "OpenWeather").asString();
+  model.unit_system =
+      static_cast<UnitSystem>(value.get("unit_system", standard).asInt());
+  model.refresh_date =
+      static_cast<std::time_t>(value.get("refresh_date", 0).asLargestInt());
+
+  auto &location = model.location;
+  const auto &location_value = value["location"];
+  update_from_json(location, location_value);
+
+  if (value["current_condition"].isNull()) {
+    model.current_condition = std::experimental::nullopt;
+  } else {
+    Condition current_condition{};
+    const auto &current_condition_value = value["current_condition"];
+    update_from_json(current_condition, current_condition_value);
+    model.current_condition = current_condition;
+  }
+  for (const auto &condition_value : value["hourly_forecast"]) {
+    Condition condition{};
+    update_from_json(condition, condition_value);
+    model.hourly_forecast.push_back(condition);
+  }
+  for (const auto &condition_value : value["daily_forecast"]) {
+    DailyCondition condition{};
+    update_from_json(condition, condition_value);
+    model.daily_forecast.push_back(condition);
+  }
+  for (const auto &alert_value : value["alerts"]) {
+    Alert alert{};
+    update_from_json(alert, alert_value);
+    model.alerts.push_back(alert);
+  }
+  for (const auto &item_value : value["location_history"]) {
+    HistoryItem item{};
+    update_from_json(item, item_value);
+    model.location_history.push_back(item);
+  }
+}
+} // namespace taranis

src/convert.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <json/value.h>
+
+#include "model.h"
+
+namespace taranis {
+Json::Value to_json(const Location &location);
+Json::Value to_json(const Condition &condition);
+Json::Value to_json(const DailyCondition &condition);
+Json::Value to_json(const Alert &alert);
+Json::Value to_json(const HistoryItem &item);
+Json::Value to_json(const Model &model);
+
+void update_from_json(Location &location, const Json::Value &value);
+void update_from_json(Condition &condition, const Json::Value &value);
+void update_from_json(DailyCondition &condition, const Json::Value &value);
+void update_from_json(Alert &alert, const Json::Value &value);
+void update_from_json(HistoryItem &item, const Json::Value &value);
+void update_from_json(Model &model, const Json::Value &value);
+} // namespace taranis

src/meson.build

@@ -22,6 +22,7 @@ sources = [about_cc] + files(
   'alerts.cc',
   'app.cc',
   'config.cc',
+  'convert.cc',
   'currentconditionbox.cc',
   'events.cc',
   'http.cc',

src/model.h

@@ -180,11 +180,8 @@ struct Alert {
 };
 
 struct HistoryItem {
-  const Location location;
+  Location location;
   bool favorite;
-
-  HistoryItem(const Location &location, bool favorite)
-      : location{location}, favorite{favorite} {}
 };
 
 struct Model {