#include <WiFi.h>
#include <WiFiClient.h>
#include "secret.h"
#include <OneWire.h>
#include "DHT.h"
#include <ThingSpeak.h>

char ssid[] = SECRET_SSID;   //  network SSID  
char pass[] = SECRET_PASS;   // ynetwork password
WiFiClient client;

unsigned long myChannelNumber = SECRET_CH_ID;  // ThingSpeak channel ID
const char * myWriteAPIKey = SECRET_WRITE_APIKEY; // ThingSpeak API key

#define SOILPIN_1 5        // Analog pin connected to the first soil moisture sensor
#define SOILPIN_2 18        // Analog pin connected to the second soil moisture sensor
#define  wet_THRESHOLD 18
#define  dry_THRESHOLD 24 
int soil_moisture1 = 0;
int soil_moisture2 = 0;

#define TRIGPIN 14         // Digital pin connected to the JSN-SR04M-2 Sensor trigger
#define ECHOPIN 27         // Digital pin connected to the JSN-SR04M-2 Sensor echo
int water_level_cm;
float duration, distance;

#define PUMP_PIN 25        // Digital pin connected to the relay module for the water pump
#define VALVE_PIN 26       // Digital pin connected to the relay module for the valve

#define DHTPIN 33     // Digital pin connected to the DHT sensor
#define DHTTYPE DHT11   // DHT 11
DHT dht(DHTPIN, DHTTYPE);

OneWire ds(4); // Analog Pin connected to the DS18B20 Sensors
byte data[9];
byte DS_1[8]={0x28,0x5A,0xBD ,0x56 ,0xB5 ,0x01 ,0x3C, 0xDD}; // Rom Adress of the first DS18B20 
byte DS_2[8]{0x28 ,0x5D ,0x6A ,0x56 ,0xB5 ,0x01 ,0x3C, 0x57}; // Rom Adress of the Second DS18B20
float get_Temp(byte addr[]);

void setup() 
{
  Serial.begin(115200);

  WiFi.begin(SECRET_SSID, SECRET_PASS);

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }

  WiFi.mode(WIFI_STA);   
  ThingSpeak.begin(client);
  dht.begin(); 
  pinMode(SOILPIN_1, INPUT);                   // Initialize first soil moisture sensor pin
  pinMode(SOILPIN_2, INPUT);                   // Initialize second soil moisture sensor pin
  pinMode(TRIGPIN, OUTPUT);                    // Initialize JSN-SR04M-2 trigger pin
  pinMode(ECHOPIN, INPUT);                     // Initialize JSN-SR04M-2 echo pin
  pinMode(PUMP_PIN, OUTPUT);                   // Initialize water pump relay pin
  pinMode(VALVE_PIN, OUTPUT);                  // Initialize valve relay pin
}

void loop() 
{
  float temperature_1 = get_Temp(DS_1);
  float temperature_2 = get_Temp(DS_2);
  Serial.print("DS_1: ");
  Serial.print(temperature_1);
  Serial.print(" DS_2: ");
  Serial.println(temperature_2);

  float humidity = dht.readHumidity();
   if (isnan(humidity)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }
  Serial.print(F("DHT Humidity: "));
  Serial.print(humidity);
  Serial.print(F("%"));

  soil_moisture1 = analogRead(SOILPIN_1); // read the analog value from sensor 1
  soil_moisture1 = map(soil_moisture1, 0, 4095, 0, 100);
  soil_moisture2 = analogRead(SOILPIN_1); // read the analog value from sensor 2
  soil_moisture2 = map(soil_moisture2, 0, 4095, 0, 100);
  Serial.print("Soil moisture 1: ");
  Serial.print(soil_moisture1);
  Serial.println("%");

  Serial.print("Soil moisture 2: ");
  Serial.print(soil_moisture2);
  Serial.println("%");
 
  water_level_cm = getDistance();
  condition();

  if (WiFi.status() == WL_CONNECTED) {
      delay(1000);
    Serial.println("Connected to WiFi...");
    // Update ThingSpeak channel with sensor data
    ThingSpeak.setField(1, soil_moisture1);
    ThingSpeak.setField(2, soil_moisture2);
    ThingSpeak.setField(3, temperature_1);
    ThingSpeak.setField(4, temperature_2);
    ThingSpeak.setField(5, humidity);
    ThingSpeak.setField(6, water_level_cm);

    // write to the ThingSpeak channel
     int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);
    if(x == 200){
     Serial.println("Channel update successful.");
     }
    else{
     Serial.println("Problem updating channel. HTTP error code " + String(x));
     }
  }

}