//Welcome in the project Moch Rijki Supriyatna:("MRS_Iky")
//Sistem Pemantauan dan Kontrol Lingkungan Otomatis dengan web
#include <WiFi.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#include <WebServer.h>

#define DHTPIN 15
#define DHTTYPE DHT22
#define LDR_PIN 34
#define SOIL_PIN 35
#define FAN_RELAY 12
#define PUMP_RELAY 14
#define LIGHT_RELAY 27
#define BUZZER 26

const char* ssid = "Wokwi-GUEST";
const char* password = "";

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
WebServer server(80);

// Global sensor values
float temperature;
float humidity;
int soil;
int lightLevel;

// Flags
bool autoMode = true;

void setup() {
  Serial.begin(115200);
    WiFi.begin(ssid, password);
      lcd.init();
        lcd.backlight();
          dht.begin();

            pinMode(LDR_PIN, INPUT);
              pinMode(SOIL_PIN, INPUT);
                pinMode(FAN_RELAY, OUTPUT);
                  pinMode(PUMP_RELAY, OUTPUT);
                    pinMode(LIGHT_RELAY, OUTPUT);
                      pinMode(BUZZER, OUTPUT);

                        digitalWrite(FAN_RELAY, HIGH);
                          digitalWrite(PUMP_RELAY, HIGH);
                            digitalWrite(LIGHT_RELAY, HIGH);
                              digitalWrite(BUZZER, LOW);

                                while (WiFi.status() != WL_CONNECTED) {
                                    delay(500);
                                        Serial.print(".");
                                          }

                                            Serial.println("WiFi connected!");
                                              Serial.println(WiFi.localIP());

                                                server.on("/", handleRoot);
                                                  server.on("/toggle", handleToggle);
                                                    server.begin();
                                                    }

                                                    void loop() {
                                                      server.handleClient();
                                                        readSensors();
                                                          displayLCD();

                                                            if (autoMode) {
                                                                controlRelays();
                                                                  }
                                                                  }

                                                                  void readSensors() {
                                                                    temperature = dht.readTemperature();
                                                                      humidity = dht.readHumidity();
                                                                        soil = analogRead(SOIL_PIN);
                                                                          lightLevel = analogRead(LDR_PIN);
                                                                          }

                                                                          void controlRelays() {
                                                                            digitalWrite(FAN_RELAY, temperature > 30 ? LOW : HIGH);
                                                                              digitalWrite(PUMP_RELAY, soil < 1500 ? LOW : HIGH);
                                                                                digitalWrite(LIGHT_RELAY, lightLevel < 1000 ? LOW : HIGH);

                                                                                  if (temperature > 40 || soil < 800) {
                                                                                      digitalWrite(BUZZER, HIGH);
                                                                                        } else {
                                                                                            digitalWrite(BUZZER, LOW);
                                                                                              }
                                                                                              }

                                                                                              void displayLCD() {
                                                                                                lcd.setCursor(0, 0);
                                                                                                  lcd.print("T:");
                                                                                                    lcd.print(temperature, 1);
                                                                                                      lcd.print(" H:");
                                                                                                        lcd.print(humidity, 0);

                                                                                                          lcd.setCursor(0, 1);
                                                                                                            lcd.print("S:");
                                                                                                              lcd.print(soil);
                                                                                                                lcd.print(" L:");
                                                                                                                  lcd.print(lightLevel);
                                                                                                                  }

                                                                                                                  void handleRoot() {
                                                                                                                    String html = "<h1>Greenhouse Control</h1>";
                                                                                                                      html += "Temperature: " + String(temperature) + "C<br>";
                                                                                                                        html += "Humidity: " + String(humidity) + "%<br>";
                                                                                                                          html += "Soil Moisture: " + String(soil) + "<br>";
                                                                                                                            html += "Light: " + String(lightLevel) + "<br><br>";
                                                                                                                              html += "Auto Mode: " + String(autoMode ? "ON" : "OFF") + "<br>";
                                                                                                                                html += "<a href='/toggle'>Toggle Auto/Manual</a><br>";
                                                                                                                                  server.send(200, "text/html", html);
                                                                                                                                  }

                                                                                                                                  void handleToggle() {
                                                                                                                                    autoMode = !autoMode;
                                                                                                                                      server.sendHeader("Location", "/");
                                                                                                                                        server.send(303);
                                                                                                                                        }