#define BLYNK_TEMPLATE_ID "TMPL3RMc96aeu"
#define BLYNK_TEMPLATE_NAME "pesticide"
#define BLYNK_AUTH_TOKEN "YxmM_nTzYOukiSN15_tD3juJYzasWAHd"
#define BLYNK_PRINT Serial



#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

// 🔑 Blynk Credentials
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// OLED config
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

// Sensor Pins
#define SOIL_PIN 34
#define LEAF_PIN 35
#define LDR_PIN 32

// Buzzer
#define BUZZER_PIN 25

// Thresholds
#define SOIL_THRESHOLD_LOW 30
#define SOIL_THRESHOLD_HIGH 70
#define LEAF_THRESHOLD_LOW 30
#define LEAF_THRESHOLD_HIGH 70
#define LIGHT_THRESHOLD 20

BlynkTimer timer;

void sendSensorData() {
  int soilValue = analogRead(SOIL_PIN);
  int leafValue = analogRead(LEAF_PIN);
  int ldrValue  = analogRead(LDR_PIN);

  int soilPercent  = map(soilValue, 0, 4095, 0, 100);
  int leafPercent  = map(leafValue, 0, 4095, 0, 100);
  int lightPercent = map(ldrValue, 0, 4095, 0, 100);

  bool highRisk = false;

  if (soilPercent < SOIL_THRESHOLD_LOW || soilPercent > SOIL_THRESHOLD_HIGH) highRisk = true;
  if (leafPercent < LEAF_THRESHOLD_LOW || leafPercent > LEAF_THRESHOLD_HIGH) highRisk = true;
  if (lightPercent < LIGHT_THRESHOLD) highRisk = true;

  // Buzzer
  digitalWrite(BUZZER_PIN, highRisk ? HIGH : LOW);

  // Send to Blynk
  Blynk.virtualWrite(V0, soilPercent);
  Blynk.virtualWrite(V1, leafPercent);
  Blynk.virtualWrite(V2, lightPercent);
  Blynk.virtualWrite(V3, highRisk ? 1 : 0);

  // Send notification
  if (highRisk) {
    Blynk.logEvent("plant_infection", "⚠️ Plant Infection Risk Detected!");
  }

  // OLED Display
  display.clearDisplay();
  display.setCursor(0, 0);
  display.setTextSize(1);
  display.setTextColor(WHITE);

  display.print("Soil: "); display.print(soilPercent); display.println(" %");
  display.print("Leaf: "); display.print(leafPercent); display.println(" %");
  display.print("Light: "); display.print(lightPercent); display.println(" %");
  display.print("Status: ");
  display.println(highRisk ? "INFECTION!" : "NORMAL");

  display.display();

  // Serial
  Serial.print("Soil: "); Serial.print(soilPercent);
  Serial.print(" Leaf: "); Serial.print(leafPercent);
  Serial.print(" Light: "); Serial.print(lightPercent);
  Serial.print(" Status: ");
  Serial.println(highRisk ? "INFECTION" : "NORMAL");
}

void setup() {
  Serial.begin(9600);

  pinMode(BUZZER_PIN, OUTPUT);
  digitalWrite(BUZZER_PIN, LOW);

  // OLED Init
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println("OLED not found");
    while (true);
  }

  display.clearDisplay();
  display.display();

  // Blynk Init
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  // Run every 2 seconds
  timer.setInterval(2000L, sendSensorData);
}

void loop() {
  Blynk.run();
  timer.run();
}