#define BOTtoken "7075784432:AAFHqptWCMPvcZLNeTfJre239blBfn2EF4c"

#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <UniversalTelegramBot.h>
#include <ArduinoJson.h>

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

// WiFiClientSecure client;
// UniversalTelegramBot bot(BOTtoken, client);

int led[] = {18, 5}; // Street light LED pins
int ir[] = {27 };  // IR motion sensor pins
int ldr[] = {33 }; // LDR sensor pins

unsigned long previousMillis = 0;
const long interval = 60000; // Interval for sending message (in milliseconds)
unsigned long bot_lasttime = 0;
const unsigned long BOT_MTBS = 1000; // Mean time between scan messages

void handleNewMessages(int numNewMessages) {
    Serial.println("handleNewMessages");
    Serial.println(String(numNewMessages));

    for (int i = 0; i < numNewMessages; i++) {
        String chat_id = "123456"; // bot.messages[i].chat_id;
        String text = "/status"; // bot.messages[i].text;
        String from_name = "Wokwi User"; // bot.messages[i].from_name;

        if (from_name == "") {
            from_name = "Guest";
        }

        if (text == "/start") {
            String welcome = "Welcome to the Street Light Monitoring System, " + from_name + ".\n";
            welcome += "Commands:\n";
            welcome += "/status : Get system status\n";
            Serial.println(welcome);
            // bot.sendMessage(chat_id, welcome);
        }

        if (text == "/status") {
            String status = "Street light system is operational.\n";
            for (int j = 0; j < 3; j++) {
                status += "LED " + String(j + 1) + " is " + (digitalRead(led[j]) ? "ON" : "OFF") + "\n";
            }
            Serial.println(status);
            // bot.sendMessage(chat_id, status);
        }
    }
}

void setup() {
    Serial.begin(9600);
    for (int i = 0; i < 3; i++) {
        pinMode(led[i], OUTPUT);
        pinMode(ir[i], INPUT);
        pinMode(ldr[i], INPUT);
        
        // Setup LEDC for PWM
        ledcSetup(i, 5000, 8); // Channel, frequency, resolution
        ledcAttachPin(led[i], i); // Attach channel to pin
    }

    // Simulate WiFi connection
    Serial.println("Connecting to WiFi...");
    delay(1000);
    Serial.println("WiFi connected");
    
    // client.setInsecure();
}

void loop() {
    unsigned long currentMillis = millis();
    if (currentMillis - previousMillis >= interval) {
        sendTelegramMessageToAll("Street light system is operational.");
        previousMillis = currentMillis;
    }

    for (int i = 0; i < 3; i++) {
        handleLEDControl(i);
    }

    if (millis() - bot_lasttime > BOT_MTBS) {
        int numNewMessages = 1; // Simulate new message
        while (numNewMessages) {
            handleNewMessages(numNewMessages);
            numNewMessages = 0; // Simulate no more new messages
        }
        bot_lasttime = millis();
    }
}

void handleLEDControl(int index) {
    int irState = digitalRead(ir[index]); // Read IR sensor state
    int ldrValue = analogRead(ldr[index]); // Read LDR sensor value

    if (ldrValue < 500) { // If light level is low
        ledcWrite(index, 128); // Turn on LED at 50% brightness
        if (irState == HIGH) { // If motion is detected
            ledcWrite(index, 255); // Turn on LED at 100% brightness
        }
    } else {
        ledcWrite(index, 0); // Turn off LED
    }

    // Check if there is a problem: IR detects motion, LDR detects darkness, but LED is off
    if (ldrValue < 500 && irState == HIGH && ledcRead(index) == 0) {
        sendTelegramMessageToAll("Problem detected: LED " + String(index + 1) + " should be ON but it's OFF.");
        delay(1000); // Add a delay to prevent spamming messages
    }
}

void sendTelegramMessageToAll(String message) {
    // Simulate sending a Telegram message
    Serial.print("Sending message to Telegram: ");
    Serial.println(message);
}