Merge TactilityHeadless into Tactility (#263)

There currently is no practical use to have TactilityHeadless as a subproject. I'm merging it with the Tactility project.

Tactility/Source/time/Time.cpp

@@ -0,0 +1,104 @@
+#include "Tactility/time/Time.h"
+#include "Tactility/kernel/SystemEvents.h"
+
+#ifdef ESP_PLATFORM
+#include <ctime>
+#include "Tactility/Preferences.h"
+#endif
+
+namespace tt::time {
+
+#ifdef ESP_PLATFORM
+
+#define TIME_SETTINGS_NAMESPACE "time"
+
+#define TIMEZONE_PREFERENCES_KEY_NAME "tz_name"
+#define TIMEZONE_PREFERENCES_KEY_CODE "tz_code"
+#define TIMEZONE_PREFERENCES_KEY_TIME24 "tz_time24"
+
+void init() {
+    auto code= getTimeZoneCode();
+    if (!code.empty()) {
+        setenv("TZ", code.c_str(), 1);
+        tzset();
+    }
+}
+
+void setTimeZone(const std::string& name, const std::string& code) {
+    Preferences preferences(TIME_SETTINGS_NAMESPACE);
+    preferences.putString(TIMEZONE_PREFERENCES_KEY_NAME, name);
+    preferences.putString(TIMEZONE_PREFERENCES_KEY_CODE, code);
+
+    setenv("TZ", code.c_str(), 1);
+    tzset();
+
+    kernel::systemEventPublish(kernel::SystemEvent::Time);
+}
+
+std::string getTimeZoneName() {
+    Preferences preferences(TIME_SETTINGS_NAMESPACE);
+    std::string result;
+    if (preferences.optString(TIMEZONE_PREFERENCES_KEY_NAME, result)) {
+        return result;
+    } else {
+        return {};
+    }
+}
+
+std::string getTimeZoneCode() {
+    Preferences preferences(TIME_SETTINGS_NAMESPACE);
+    std::string result;
+    if (preferences.optString(TIMEZONE_PREFERENCES_KEY_CODE, result)) {
+        return result;
+    } else {
+        return {};
+    }
+}
+
+bool isTimeFormat24Hour() {
+    Preferences preferences(TIME_SETTINGS_NAMESPACE);
+    bool show24Hour = true;
+    preferences.optBool(TIMEZONE_PREFERENCES_KEY_TIME24, show24Hour);
+    return show24Hour;
+}
+
+void setTimeFormat24Hour(bool show24Hour) {
+    Preferences preferences(TIME_SETTINGS_NAMESPACE);
+    preferences.putBool(TIMEZONE_PREFERENCES_KEY_TIME24, show24Hour);
+    kernel::systemEventPublish(kernel::SystemEvent::Time);
+}
+
+#else
+
+static std::string timeZoneName;
+static std::string timeZoneCode;
+static bool show24Hour = true;
+
+void init() {}
+
+void setTimeZone(const std::string& name, const std::string& code) {
+    timeZoneName = name;
+    timeZoneCode = code;
+    kernel::systemEventPublish(kernel::SystemEvent::Time);
+}
+
+std::string getTimeZoneName() {
+    return timeZoneName;
+}
+
+std::string getTimeZoneCode() {
+    return timeZoneCode;
+}
+
+bool isTimeFormat24Hour() {
+    return show24Hour;
+}
+
+void setTimeFormat24Hour(bool enabled) {
+    show24Hour = enabled;
+    kernel::systemEventPublish(kernel::SystemEvent::Time);
+}
+
+#endif
+
+}