// Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain

// REQUIRES the following Arduino libraries:
// - DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library
// - Adafruit Unified Sensor Lib: https://github.com/adafruit/Adafruit_Sensor

#include "DHT.h"
#include <Wire.h>
#include <Adafruit_GFX.h>
#include "Adafruit_SSD1306.h"

#if defined(ESP8266)
#define WIRE Wire
#elif defined(ESP32)
#define WIRE Wire
#elif defined(ARDUINO_STM32_FEATHER)
#define WIRE Wire
#elif defined(TEENSYDUINO)
#define WIRE Wire
#elif defined(ARDUINO_FEATHER52832)
#define WIRE Wire
#elif defined(ARDUINO_ADAFRUIT_FEATHER_RP2040)
#define WIRE Wire1
#else
#define WIRE Wire
#endif

Adafruit_SSD1306 display = Adafruit_SSD1306(128, 64, &WIRE);

#define DHTPIN 7     // Digital pin connected to the DHT sensor
#define  MOISTUREPIN A0
#define FANPIN 8

float h;
float t;
float f;

int moistureValue = 0;
String soilState = "";
String motorState = "";
int motorPin = 3;

// Uncomment whatever type you're using!
//#define DHTTYPE DHT11   // DHT 11
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
//#define DHTTYPE DHT21   // DHT 21 (AM2301)

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  pinMode(motorPin, OUTPUT);
  pinMode(FANPIN, OUTPUT);
  Serial.println(F("DHTxx test!"));
  digitalWrite(FANPIN, LOW);
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // Address 0x3C for 128x32
  dht.begin();
  display.display();
  delay(1000);
  // Clear the buffer.
  display.clearDisplay();
  display.display();
}

void loop() {
  moistureValue = analogRead(MOISTUREPIN);
  Serial.println(moistureValue);


  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  // Read temperature as Fahrenheit (isFahrenheit = true)
  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  // Compute heat index in Fahrenheit (the default)
  float hif = dht.computeHeatIndex(f, h);
  // Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);

  Serial.print(F("Humidity: "));
  Serial.print(h);
  Serial.print(F("%  Temperature: "));
  Serial.print(t);
  Serial.println(F("°C "));

  // text display tests
  display.clearDisplay();
  // display.display();
  display.drawRect(0, 0,  display.width(), display.height(), WHITE);
  display.drawLine(64, 0, 64, 63, WHITE);
  display.drawLine(0, 32, 64, 32, WHITE);
  display.drawLine(64, 32, 128, 32, WHITE);
  display.fillRect(2, 2, 61, 8, WHITE);//hu
  display.fillRect(2, 34, 61, 8, WHITE);//moi
  display.fillRect(66, 2, 60, 8, WHITE);
  display.fillRect(66, 34, 60, 8, WHITE);
  display.setTextSize(1);
  display.setTextColor(SSD1306_BLACK);
  display.setCursor(9, 2);
  display.print("Humidity");
  display.setCursor(83, 2);
  display.print("Temp");
  display.setCursor(9, 34);
  display.print("Moisture");
  display.setCursor(82, 34);
  display.print("Motor");
  display.setTextColor(SSD1306_WHITE);
  display.setTextSize(2);
  display.setCursor(20, 15);
  display.print(h, 0);
  display.setCursor(84, 15);
  display.print(t, 0);
  display.setCursor(16, 45);
  display.print(soilState);
  display.setCursor(82, 45);
  display.print(motorState);
  display.setTextSize(1);
  display.setCursor(46, 15);
  display.print("%");
  display.setCursor(108, 15);
  display.print((char)247);
  display.print("C");
  if (moistureValue < 512) {
    digitalWrite(motorPin, LOW);
    motorState = "OFF";
    soilState = "WET";
    digitalWrite(FANPIN, HIGH);
  }
  if (moistureValue > 512) {
    digitalWrite(motorPin, HIGH);
    motorState = "ON";
    soilState = "DRY";
    digitalWrite(FANPIN, HIGH);
  }
  if (t <= 40.0) {
    digitalWrite(FANPIN, HIGH);
  }
  if (t > 40) {
    digitalWrite(FANPIN, LOW);
  }
  // display.setCursor(108, 0);
  // display.setCursor(108, 16);
  // display.setCursor(115, 16);

  // display.setTextSize(1);
  // display.setTextColor(SSD1306_WHITE);
  // display.setCursor(0, 2);
  // display.print("Humidity:");
  // display.setCursor(24, 18);
  // display.print("Temp:");
  // display.setCursor(0, 34);
  // display.print("Moisture:");
  // display.setCursor(18, 51);
  // display.print("Motor:");
  // display.setTextSize(2);
  // display.setCursor(60, 1);
  // display.print(h,1);
  // display.setCursor(60, 16);
  // display.print(t,1);
  // display.setCursor(60, 32);
  // display.print("Dry");
  // display.setCursor(60, 50);
  // display.print("ON");
  // display.setTextSize(1);
  // display.setCursor(108, 0);
  // display.print("%");
  // display.setCursor(108, 16);
  // display.print((char)247);
  // display.setCursor(115, 16);
  // display.print("C");

  display.display(); // actually display all of the above
  // Wait a few seconds between measurements.
  // delay(1000);

}