//======================================================
// LIBRARIES
//======================================================
  
  #include <ArduinoJson.h>
  #include <TimeTrigger.h>
  #include <Adafruit_NeoPixel.h>

  #ifdef __AVR__
    #include <avr/power.h>
  #endif
  
//======================================================
// JSON STRINGS AND DOCUMENT
//======================================================

  // FIXED MESSAGES
  #define POWERUP       "{\"status\":\"POWER UP\"}"
  #define UNDERSTOOD    "{\"status\":\"OK\"}"
  #define JSON_ERROR    "{\"status\":\"ERROR JSON\"}"
  #define TARGET_MET    "{\"status\":\"TARGET MEET\"}"
  #define GAME_OVER     "{\"status\":\"GAME OVER\"}"
  #define TIME_OVER     "{\"status\":\"TIME OVER\"}"
  #define UNKNOWN_GAME  "{\"status\":\"UNKNOWN GAME\"}"

  // GAME NAMES
  #define GM_COUNTER    "{\"gm\":\"COUNTER\"}"
  #define GM_TATTACK    "{\"gm\":\"TIME ATTACK\"}"
  #define GM_REACTION   "{\"gm\":\"REACTION\"}"
  #define GM_DECISION   "{\"gm\":\"DECISION\"}"
  #define GM_STAMINA    "{\"gm\":\"STAMINA\"}"

  // COMMAND LIST
  #define CM_START      "{\"cm\":\"START\"}"
  #define CM_RESET      "{\"cm\":\"RESET\"}"
  #define CM_STOP       "{\"cm\":\"STOP\"}"
  #define CM_EXIT       "{\"cm\":\"EXIT\"}"

  // JSON CAPACITY
  #define CAPACITY      100

  // Public JSON Document
  DynamicJsonDocument   JSON(CAPACITY); // Building JSON Buffer
  
//======================================================
// HARDWARE SETUP & SELECTION
//======================================================

  // Arduino Hardware Serial Port
  #define Terminal        Serial  // SERIAL PORT USED AS TERMINAL WINDO FOR DEBUG

  // The Integer Value Of The Strike Is Exceeded Accept As A Point
  #define VTH             14  // THRESHOLD VOLTAGE FOR ZERO POSITIONNING KICKING POWER SENSOR

  // Number Of LED's In The Neo Pixel Strip 
  #define NUM_PIXELS      14  // NUMBER OF LED'S IN NEO PIXEL STRIP

  // Incase You Are Using Arduino MEGA
  #ifdef  ARDUINO_AVR_MEGA2560

    #define Bluetooth     Serial1 // We will Connect The HC-05 To Hardware Serial1 In Arduino Mega
    #define LED_STRIP     53  // LED STRIP PIN NUMBER
    #define SENSOR_PIN    A0  // IMPACT SENSOR
    #define RANDOM_SOURCE A7  // RANDOM NUMBER GENERATOR SOURCE
    
  // Incase You Are Using Arduino Nano
  #elif ARDUINO_AVR_UNO || ARDUINO_AVR_NANO
  
    //----------------------------------------------------------
    /* ARDUINO NANO DOESNOT HAVE A SECOND NATIVE 
    SERIAL PORT SO WE USE SOFTWARE SERIAL LIBRARY */
    #include <SoftwareSerial.h>
    //----------------------------------------------------------
    SoftwareSerial        Bluetooth(10, 11); // Pin 10 RX, Pin 11 TX
    #define LED_STRIP     2   // LED STRIP PIN NUMBER
    #define SENSOR_PIN    A0  // IMPACT SENSOR
    #define RANDOM_SOURCE A4  // RANDOM NUMBER GENERATOR SOURCE
  
  // if This Was The ESP32 Core
  #elif ESP32

    //----------------------------------------------------------
    #include <BluetoothSerial.h>
    #if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
      #error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
    #endif
    //----------------------------------------------------------
    BluetoothSerial       Bluetooth;  // Here We Use the Native Bluetooth In The ESP32
    #define LED_STRIP     33  // LED STRIP PIN NUMBER
    #define SENSOR_PIN    39  // IMPACT SENSOR
    #define RANDOM_SOURCE 34  // RANDOM NUMBER GENERATOR SOURCE
    
  // End Of Arduino Selection ARDUINO_MEGA
  #endif

  // NEO PIXEL STRIP
  Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUM_PIXELS, LED_STRIP, NEO_GRB + NEO_KHZ800);
  
//======================================================
// DEFINITION & DECLERATIONS
//======================================================

  // Serial Flags
  #define isBluetooth   Bluetooth.available()
  #define isTerminal    Terminal.available()

//======================================================
// READING IMPACT POWER FROM ANALOG PINS
//======================================================

  // READING THE IMPACT
  int readImpact() 
  {
    int value = analogRead(SENSOR_PIN);
    return value;
  }

//======================================================
// MAIN HARDWARE SETUP
//======================================================

  void setup() 
  {
    // Communications
    Terminal.begin(9600);

    // Make Sure Of The Core
    #ifdef  ESP32
      Bluetooth.begin("KICKER"); //Bluetooth device name
    #else
      Bluetooth.begin(9600);
    #endif

    // I/O
    pixels.begin();   // Neo Pixel
    LED_CLEAR();      // Turn Off All LED

    // The Random Number Source
    randomSeed(analogRead(RANDOM_SOURCE));

    // POWER UP MESSGAE
    dualcomm(POWERUP);

    // DISPLAY COMPANY COUNTRY FLAG
    LED_BAHRAIN_FLAG();   // Bahrain Flag
    LED_COLOMBIA_FLAG();  // Colombia Flag

    // DisJSON Rainbow
    LED_CLEAR();
  }

//======================================================
// MAIN PROGRAM LOOP
//======================================================

  void loop() 
  {
    // Reading From Bluetooth
    if(Bluetooth.available()) 
    {
      // Reading Message From Bluetooth
      String msg = Bluetooth.readStringUntil('\n');
      msg.trim();

      // DisJSON On Sertial
      terminal(msg);
      
      // Deserialize the JSON document
      DeserializationError error = deserializeJson(JSON, msg);

      // If The System Understood The Message Clearly
      if(!error)
      {
        // Sending Status Message
        dualcomm(UNDERSTOOD);

        // Reading Game Name & Settings
        String game = JSON["gm"];
        String settings = JSON["set"];

        // Clearing JSON Buffer
        JSON.clear();
        
        // Entering To Game Selector
        game_selector(game, settings);
      }
      else
      {
        terminal(JSON_ERROR);
      }
      Bluetooth.flush();
    }
  }

//======================================================
// END OF PROGRAM
//======================================================