// SPDX-License-Identifier: Apache-2.0
// Copyright (c) 2012-2024 Scott Penrose <scottp@dd.com.au> and WII5 Buoy contributors
//
// This file is part of WII5 Buoy firmware.
// See LICENSE for full terms.

/**
 * @file WII5ModeLowBattery.cpp
 * @brief Low-battery mode: degraded operation when supply is depleted.
 */

/*

LowBattery mode - a simple repeatign mode that will capture position data and send it.

*/

#include <Arduino.h>
#include <TimeLib.h>
#include <WII5.h>

void WII5ModeLowBattery::reset() {
  step = WII5LOWBATTERY_START;
  wait = 0;
}

void WII5ModeLowBattery::begin() {
}

void WII5ModeLowBattery::start() {
  step = WII5LOWBATTERY_GPS_START; wait = 0;
}

void WII5ModeLowBattery::stop() {
  step = WII5LOWBATTERY_END; wait = 0;
}

void WII5ModeLowBattery::loop() {
  bool first = (lastStep != step);
  lastStep = step;

  switch (step) {
    case WII5LOWBATTERY_START:
      if (first) {
        // TODO This seems bad, perhaps only if next is  10 minutes?
        // First time in, turn off devices we don't need.
        // Can we turn off Maths.
        sh3dNodeIO.led1Set( LED_TRIPPLE_GAP );
        wii5Controller.setSDOff();
        wii5Gps.off();
        wii5Iridium.stop();
        wii5Sparton.stop();
        wii5Controller.shared5Off();

        console.log(LOG_INFO, F("LowBattery: Waiting for %lu minutes"),
          wii5Display.minutesUntilNext(40)
        );
      }
      else if (wait > (WII5TIME_1DAY * 1000)) {
        console.log(LOG_ERROR, F("LowBattery: Timeout - over 24 hours, moving on to do a location and data send"));
        step = WII5LOWBATTERY_GPS_START; wait = 0;
      }
      else {
        // TODO - reduce this complicated task ? Lots of maths, being run at full speed
        minutes = (hour() * 60) + minute();
        if ( (minutes % 40) == 0) {
          console.log(LOG_INFO, F("LowBattery: Starting minutes match period min=%lu, period=%lu"), minutes, 40);
          step = WII5LOWBATTERY_GPS_START; wait = 0;
          sh3dNodeIO.led1Set( LED_TRIPPLE_GAP );
        }
      }
      break;

    case WII5LOWBATTERY_GPS_START:
      // Ask the GPS for accurate data
      console.log(LOG_DEBUG, F("LowBattery: Starting GPS, Battery, Temperature"));
      #ifdef WII5_GPS
      wii5Gps.autoAccurate();
      #endif
      wii5Battery.start();
      wii5Weather_18B20.temperatureRead();
      step = WII5LOWBATTERY_GPS_WAIT; wait = 0;
      break;

    case WII5LOWBATTERY_GPS_WAIT:
      if (first) {
        displayWait = 0;
      }
      else if (wii5Gps.ready()) {
        if (wii5Gps.isError()) {
          console.log(LOG_ERROR, F("LowBattery: GPS Finished with ERROR"));
        }
        wii5Gps.off();
        step = WII5LOWBATTERY_IRIDIUM_WAIT; wait = 0;
      }
      else if (wait > 120000) {
        console.log(LOG_ERROR, F("LowBattery: GPS Timed out after 300 seconds"));
        step = WII5LOWBATTERY_IRIDIUM_WAIT; wait = 0;
      }
      break;

    case WII5LOWBATTERY_IRIDIUM_WAIT:
      if (first) {
        console.log(LOG_INFO, F("LowBattery: Communications start"));
        wii5Communications.setSimpleMode();
        // Increment updateRecordCount for each save to SD OR send to Iridium
        wii5Communications.sendBinModeType(1, wii5Config.getRecordCount());
        wii5Communications.start();
      }
      else if (!wii5Communications.isRunning()) {
        console.log(LOG_INFO, F("LowBattery: Communications end"));
        step = WII5LOWBATTERY_END; wait = 0;
      }
      // TODO 10 minutes ok
      else if (wait > 600000) {
        console.log(LOG_FATAL, F("LowBattery: Communications timeout"));
        step = WII5LOWBATTERY_END; wait = 0;
      }
      break;

    case WII5LOWBATTERY_END:
      if (first) {
        console.log(LOG_DEBUG, F("LowBattery: End"));
      }
      wii5Communications.stop();
      wii5Gps.off();

      // Stop everything
      wii5Controller.setSDOff();
      wii5Sparton.stop();
      wii5Controller.shared5Off();

      step = WII5LOWBATTERY_START; wait = 0;
      break;

    default:
      console.log(LOG_FATAL, F("LOWBATTERY: Default step... step=%d"), step);
      step = WII5LOWBATTERY_START;
  }
}

WII5ModeLowBattery wii5ModeLowBattery;