/*
   PIR sensor tester
*/

#include <WiFi.h>
#include "ThingSpeak.h"

#define CHANNEL_ID 1905901
#define CHANNEL_API_KEY "SEJ6YD7785HFNM6G"

WiFiServer server(80);
WiFiClient client;

int counter = 0;

#define WIFI_TIMEOUT_MS 20000

int ledPin = 12;                // choose the pin for the LED
int inputPin = 14;               // choose the input pin (for PIR sensor)
int pirState = LOW;             // we start, assuming no motion detected
int val = 0;                    // variable for reading the pin status

void connectWiFi() {
  Serial.print("Connecting...");
  WiFi.mode(WIFI_STA);
  WiFi.begin("Wokwi-GUEST", "", 6);

  unsigned long startAttemptTime = millis();

  while(WiFi.status() != WL_CONNECTED &&
    millis() - startAttemptTime < WIFI_TIMEOUT_MS) {
      Serial.print(".");
      delay(100);
    }

  if (WiFi.status() != WL_CONNECTED) {
    Serial.println("Fail");
  } else {
    Serial.print("Connected");
    Serial.println(WiFi.localIP());
  }

}

void setup() {
  pinMode(ledPin, OUTPUT);      // declare LED as output
  pinMode(inputPin, INPUT);     // declare sensor as input

  Serial.begin(9600);
  connectWiFi();

  ThingSpeak.begin(client);

}

void loop() {
  counter++;

  ThingSpeak.writeField(CHANNEL_ID, 1, counter, CHANNEL_API_KEY);

  delay(15000);

  val = digitalRead(inputPin);  // read input value
  if (val == HIGH) {            // check if the input is HIGH
    digitalWrite(ledPin, HIGH);  // turn LED ON
    if (pirState == LOW) {
      // we have just turned on
      Serial.println("Motion detected!");
      // We only want to print on the output change, not state
      pirState = HIGH;
    }
  } else {
    digitalWrite(ledPin, LOW); // turn LED OFF
    if (pirState == HIGH) {
      // we have just turned of
      Serial.println("Motion ended!");
      // We only want to print on the output change, not state
      pirState = LOW;
    }
  }
}