From 64014f03eeff463c5334c0e4433dac208da7ffe2 Mon Sep 17 00:00:00 2001
From: JF <jf@codingfield.com>
Date: Mon, 2 Mar 2020 20:13:30 +0100
Subject: [PATCH] Fix date/time conversion from CTS to internal date/time
 representation.

---
 .../DateTime/DateTimeController.cpp           | 22 +++++++++----------
 src/Components/DateTime/DateTimeController.h  |  4 ++--
 src/DisplayApp/Screens/Clock.h                |  2 +-
 3 files changed, 13 insertions(+), 15 deletions(-)

diff --git a/src/Components/DateTime/DateTimeController.cpp b/src/Components/DateTime/DateTimeController.cpp
index ed6d70fb..5cfa08eb 100644
--- a/src/Components/DateTime/DateTimeController.cpp
+++ b/src/Components/DateTime/DateTimeController.cpp
@@ -7,25 +7,23 @@ using namespace Pinetime::Controllers;
 
 void DateTime::SetTime(uint16_t year, uint8_t month, uint8_t day, uint8_t dayOfWeek, uint8_t hour, uint8_t minute,
                        uint8_t second, uint32_t systickCounter) {
+  std::tm tm = { /* .tm_sec  = */ second,
+          /* .tm_min  = */ minute,
+          /* .tm_hour = */ hour,
+          /* .tm_mday = */ day,
+          /* .tm_mon  = */ month - 1,
+          /* .tm_year = */ year - 1900,
+  };
+  tm.tm_isdst = -1; // Use DST value from local time zone
+  currentDateTime =  std::chrono::system_clock::from_time_t(std::mktime(&tm));
 
-  currentDateTime = {};
-  currentDateTime += date::years( year-1970);
-  currentDateTime += date::days( day - 1);
-  currentDateTime += date::months( month - 1);
-
-  currentDateTime += std::chrono::hours(hour);
-  currentDateTime += std::chrono::minutes (minute);
-  currentDateTime += std::chrono::seconds (second);
-
-  currentDateTime -= std::chrono::hours(3); // TODO WHYYYY?
   NRF_LOG_INFO("%d %d %d ", day, month, year);
   NRF_LOG_INFO("%d %d %d ", hour, minute, second);
   previousSystickCounter = systickCounter;
+
   UpdateTime(systickCounter);
   NRF_LOG_INFO("* %d %d %d ", this->hour, this->minute, this->second);
   NRF_LOG_INFO("* %d %d %d ", this->day, this->month, this->year);
-
-
 }
 
 void DateTime::UpdateTime(uint32_t systickCounter) {
diff --git a/src/Components/DateTime/DateTimeController.h b/src/Components/DateTime/DateTimeController.h
index 9e7392cd..1e65bd11 100644
--- a/src/Components/DateTime/DateTimeController.h
+++ b/src/Components/DateTime/DateTimeController.h
@@ -20,7 +20,7 @@ namespace Pinetime {
         uint8_t Minutes() const { return minute; }
         uint8_t Seconds() const { return second; }
 
-        std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds> CurrentDateTime() const { return currentDateTime; }
+        std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> CurrentDateTime() const { return currentDateTime; }
       private:
         uint16_t year = 0;
         Months month = Months::Unknown;
@@ -31,7 +31,7 @@ namespace Pinetime {
         uint8_t second = 0;
 
         uint32_t previousSystickCounter = 0;
-        std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds> currentDateTime;
+        std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> currentDateTime;
 
     };
   }
diff --git a/src/DisplayApp/Screens/Clock.h b/src/DisplayApp/Screens/Clock.h
index d6e44fda..d14595b0 100644
--- a/src/DisplayApp/Screens/Clock.h
+++ b/src/DisplayApp/Screens/Clock.h
@@ -63,7 +63,7 @@ namespace Pinetime {
 
           DirtyValue<uint8_t> batteryPercentRemaining  {0};
           DirtyValue<bool> bleState {false};
-          DirtyValue<std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds>> currentDateTime;
+          DirtyValue<std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds>> currentDateTime;
           DirtyValue<Pinetime::Version> version;
 
           lv_style_t* labelStyle;