/*
 * keyboard.ino
 * 
 * This script handle the keyboard related events
 * in the task scheduler
 */
//Scheduler entry point
void keyboardListenerCallback(){
  updateButtonStates();
  handButtonLogic();
}

//Update the button pressing state to the global variable
void updateButtonStates(){
  int val = 0;
  val = digitalRead(D7);
  buttonState[0] = (val == 0);
  val = digitalRead(D6);
  buttonState[1] = (val == 0);
  val = digitalRead(D5);
  buttonState[2] = (val == 0);
  val = digitalRead(D0);
  buttonState[3] = (val == 0);
}

//Restore page to currentPage
void restorePage(){
  if (currentPage == 0){
    changePage("home");
    updateTimeInfo();
    renderHomepageWeatherInfo();
  }else if (currentPage == 1){
    changePage("forcast");
    currentPage = 1;
  }else{
    changePage("home");
    updateTimeInfo();
    renderHomepageWeatherInfo();
  }
}

//Use the global variable state to decide which page to swap
void handButtonLogic(){
  //Special Buttons Combinations
  if (buttonState[0] && buttonState[1]){
    //Reload the weather information
    if(isNight()){
      changePage("togn");
      sendCommand("t0.txt=\"Making API request\"");
      sendCommand("debug.txt=\"Updating weather forcast\"");
    }else{
      changePage("togd");
      sendCommand("debug.txt=\"Updating weather forcast\"");
    }
    
    updateCurrentWeatherInfo();
    renderHomepageWeatherInfo();
    bool succ = updateAndRenderForcastInfo();
    if (!succ){
      //Error occured
      return;
    }
    if(isNight()){
      changePage("okn");
    }else{
      changePage("okd");
    }
    delay(3000);
    restorePage();
    return;
  }

  //Normal button presses
  if (buttonState[0] && currentPage != 0){
     //Back to homepage
     changePage("home");
     currentPage = 0;
     updateTimeInfo();
     renderHomepageWeatherInfo();
  }else if (buttonState[1] && currentPage != 1){
    //Open Weather Forcast
    changePage("forcast");
    currentPage = 1;
  }else if (buttonState[2] && currentPage != 2){
    //IoT Action 1
    if(isNight()){
      changePage("togn");
    }else{
      changePage("togd");
    }

    //TODO: Restful call here
    delay(5000);
    if(isNight()){
      changePage("okn");
    }else{
      changePage("okd");
    }
    delay(3000);
    restorePage();
  }else if (buttonState[3]){
    //IoT Action 2
    if(!isNight()){
      changePage("togn");
    }else{
      changePage("togd");
    }

    //TODO: Restful call here
    delay(5000);
    if(!isNight()){
      changePage("okn");
    }else{
      changePage("okd");
    }
    delay(3000);
    restorePage();
    
  }
}