#include <WiFi.h>
#include "ThingSpeak.h" // always include thingspeak header file after other header files and custom macros

#define SECRET_SSID "Wokwi-GUEST"
#define SECRET_PASS ""

#define SECRET_CH_ID_WEATHER_STATION 3326704   // Greenhouse Feedback – Smith
#define SECRET_READ_APIKEY_STATUS "7I0Z2JJT2FBWR2V7"   // Correct Read API Key

char ssid[] = SECRET_SSID;
char pass[] = SECRET_PASS;
int keyIndex = 0;
WiFiClient client;

// Feedback channel details
unsigned long weatherStationChannelNumber = SECRET_CH_ID_WEATHER_STATION;
unsigned int statusFieldNumber = 1;
const char* myStatusReadAPIKey = SECRET_READ_APIKEY_STATUS;

int RedLED = 2;
int GreenLED = 4;
int BlueLED = 16;

void setup() {
  Serial.begin(115200);
  pinMode(RedLED, OUTPUT);
  pinMode(GreenLED, OUTPUT);
  pinMode(BlueLED, OUTPUT);

  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}

void loop() {

  int statusCode = 0;

  // Connect or reconnect to WiFi
  if (WiFi.status() != WL_CONNECTED) {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(SECRET_SSID);
    while (WiFi.status() != WL_CONNECTED) {
      WiFi.begin(ssid, pass);
      Serial.print(".");
      delay(5000);
    }
    Serial.println("\nConnected");
  }

  // Read humidity status from Feedback channel
  String humidityStatus = ThingSpeak.readStringField(
      weatherStationChannelNumber,
      statusFieldNumber,
      myStatusReadAPIKey
  );

  statusCode = ThingSpeak.getLastReadStatus();

  if (statusCode == 200) {
    Serial.println("Greenhouse state: " + humidityStatus);

    if (humidityStatus == "Low") {
      digitalWrite(RedLED, HIGH);
      digitalWrite(GreenLED, LOW);
      digitalWrite(BlueLED, LOW);
    }
    else if (humidityStatus == "High") {
      digitalWrite(RedLED, LOW);
      digitalWrite(GreenLED, LOW);
      digitalWrite(BlueLED, HIGH);
    }
    else { // Normal
      digitalWrite(RedLED, LOW);
      digitalWrite(GreenLED, HIGH);
      digitalWrite(BlueLED, LOW);
    }

  } else {
    Serial.println("Problem reading channel. HTTP error code " + String(statusCode));
  }

  delay(15000);
}