#include <WiFi.h>
#include <HTTPClient.h>

// -- Configuration Parms --------------------------------------------
const char* ssid          = "YOUR WIFI SSID";
const char* password      = "YOUR WIFI PASSWORD";
const char* SERVER_URL    = "YOUR REPOSITORY" //"http://192.168.1.81:5000/doors";
IPAddress local_IP(192, 168, 1, 225);
IPAddress gateway(192, 168, 1, 1);
IPAddress subnet(255, 255, 255, 0);
const long  SLEEP_SECONDS = 60;    // 1 minute interval check
//--
const int   DOOR_GPIO     = 4;        // any GPIO pin will do
const int   BATTERY_GPIO  = 3;        // any GPIO pin will do
float battery = 0;
RTC_DATA_ATTR bool doorClosedPrevious = false;
bool doorClosed = false;

void report() {
	analogSetAttenuation(ADC_11db);
	analogReadResolution(12);
	battery = analogRead(BATTERY_GPIO) * (3.3f / 4095.0f) * 3.068;
	const char* doorState = doorClosed ? "close" : "open";

	// Connect to WiFi with static IP
	WiFi.config(local_IP, gateway, subnet);
	WiFi.begin(ssid, password);

	int attempts = 0;
	while (WiFi.status() != WL_CONNECTED && attempts < 20) {
		delay(500);
		attempts++;
	}

	if (WiFi.status() == WL_CONNECTED) {
		HTTPClient http;
		String url = String(SERVER_URL) + "?garageIn=" + doorState + "&battery=" + String(battery, 2);

		http.begin(url);
		int httpCode = http.GET();
		http.end();
	}

	WiFi.disconnect(true);
	WiFi.mode(WIFI_OFF);
}
void setup() {
	pinMode(BATTERY_GPIO, INPUT);
	// Blue LED on when powered, off before sleep, replaces Rec always on
	pinMode(8, OUTPUT);
	digitalWrite(8, LOW);  // HIGH = on for most C3 Super Mini boards, flash once
	pinMode(DOOR_GPIO, INPUT_PULLUP);
	delay(10);  // settle time
	digitalWrite(8, HIGH);   // turn off before sleeping
	doorClosed = (digitalRead(DOOR_GPIO) == LOW);
	if ( doorClosed != doorClosedPrevious) {
		doorClosedPrevious = doorClosed;
		report();
	}
	esp_sleep_enable_timer_wakeup((uint64_t)SLEEP_SECONDS * 1000000ULL);
	esp_deep_sleep_start();
}
void loop() { )