/*
  Home Dynamic System v3
  Desktop Control Panel Firmware

  Author: tobychui

  [Compile Options]
  Wemos D1 R2 & Mini
  CPU: 160Mhz
  IwIP: High Bandwidth v2

  [Wiring Definations]
  D0 -> Button 4
  D5 -> Button 3
  D6 -> Button 2
  D7 -> Button 1

  [HMI Element Definations]
  page: home
  p0 -> background wallpaper (night: 0, day: 1)
  time -> current time
  ampm -> am / pm string
  date -> current date 
  dow -> Date of Week, e.g. MON
  temp -> Current temp, max 2 digit
  humd -> Current humditiy, max 2 digit
  rain -> Current rainfall in mm, max 2 digit
  wicon -> Weather icon (large)
    6: Sunny Day
    7: Clear Night
    8: Cloudy
    9: Rainy
    10: Cloudy Day
    11: Heavy Rain
    12: Thunder
    13: Cloudy Night
*/

//Include libraries
#include <ESP8266WiFi.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
#include <SoftwareSerial.h>
#include <WiFiManager.h>
#include <ArduinoJson.h>
#include <TaskScheduler.h>

//WiFi Related
WiFiManager wifiManager;

//UART HMI
SoftwareSerial HMISerial(D2, D1); // RX, TX
bool debugMode = true;

//Clock & NTP
WiFiUDP UDPconn;
NTPClient ntpClient(UDPconn, "pool.ntp.org");
const String weekDays[7] = {"Sun", "Mon", "Tues", "Wed", "Thu", "Fri", "Sat"};
const String months[12] = {"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

//Global Variables
int currentPage = 0; //0 = home, 1 = forcast, 2 = iot
bool buttonState[4] = {false, false, false, false};
//Current weather
int currentTemp = 25;
int currentHumd = 50;
int currentRain = 0;
bool currentIsRaining = false;

//Schedulers
void keyboardListenerCallback();
void datetimeUpdateCallback();
void todayWeatherUpdateCallback();
void weatherForcastCallback();
Task t_kb(50, TASK_FOREVER, &keyboardListenerCallback);
Task t_dt(10000, TASK_FOREVER, &datetimeUpdateCallback);
Task t_wt(3600000, TASK_FOREVER, &todayWeatherUpdateCallback);
Task t_wf(3600000, TASK_FOREVER, &weatherForcastCallback);

Scheduler runner;

// the setup function runs once when you press reset or power the board
void setup() {
  //Serial
  Serial.begin(9600);
  HMISerial.begin(9600);

  delay(100);
  sendCommand("page init");
  sendCommand("t0.txt=\"Waiting WiFi\"");
  
  // Connect to Wi-Fi
  wifiManager.setClass("invert");
  wifiManager.autoConnect("HomeDynamic Panel");
  if (!debugMode) {
    wifiManager.setDebugOutput(false);
  }
  
  sendCommand("t0.txt=\"Setting up NTP conn\"");
  delay(1000);
  
  //Start NTP Client
  ntpClient.begin();
  ntpClient.setTimeOffset(28800);

  // setup button pins
  pinMode(D7, INPUT); //1
  pinMode(D6, INPUT); //2
  pinMode(D5, INPUT); //3
  pinMode(D0, INPUT); //4

  sendCommand("t0.txt=\"Starting scheduler\"");
  // setup schedulers
  runner.init();
  Serial.println("Initialized scheduler");
  runner.addTask(t_kb); //Keyboard update task
  runner.addTask(t_dt); //Date-time update task
  runner.addTask(t_wt); //Weather update task
  runner.addTask(t_wf); //Weather forcast task

  //Enable all the backtground tasks
  delay(300);
  t_kb.enable();
  delay(300);
  t_dt.enable();
  delay(300);
  t_wt.enable();
  delay(300);
  t_wf.enable();

  //Switch over to homepage
  sendCommand("page home");
}

// the loop function runs over and over again forever
void loop() {
  runner.execute();
}