#include <SD.h>
#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
#include <WiFi.h>

#define SWITCH1 12
#define SWITCH2 14
#define RED_LED 15
#define GREEN_LED 2

unsigned long switch1_time = 0;
unsigned long switch2_time = 0;
bool switch1_state = 0;
bool switch2_state = 0;

void setup() {
  pinMode(SWITCH1, INPUT);
  pinMode(SWITCH2, INPUT);
  pinMode(RED_LED, OUTPUT);
  pinMode(GREEN_LED, OUTPUT);

  // Initialize SD card and create a file
  if (!SD.begin()) {
    Serial.println("Error initializing SD card");
    return;
  }
  File logFile = SD.open("log.txt", FILE_WRITE);
  if (!logFile) {
    Serial.println("Error creating log file");
    return;
  }
  Serial.begin(115200); //initialize serial communication
}

void loop() {
  // Check if switch 1 is pulled high
  if (digitalRead(SWITCH1) == HIGH) {
    switch1_time = millis();
    switch1_state = 1;
  }
  // Check if switch 2 is pulled high
  if (digitalRead(SWITCH2) == HIGH) {
    switch2_time = millis();
    switch2_state = 1;
  }

  // Check if both switches have been pulled high for more than 500ms
  if (switch1_state && switch2_state && (millis() - switch1_time > 500) && (millis() - switch2_time > 500)) {
    // Turn on red LED
    digitalWrite(RED_LED, HIGH);

    // Get current time and date
    struct tm timeinfo;
    if(!getLocalTime(&timeinfo)){
      Serial.println("Failed to obtain time");
      return;
    }
    char timeStringBuff[20];
    strftime(timeStringBuff, sizeof(timeStringBuff), "%Y-%m-%d %H:%M:%S", &timeinfo);
    String timeString = String(timeStringBuff);

    // Write log entry to file
    File logFile = SD.open("log.txt", FILE_WRITE);
    if (logFile) {
      String log = "Event logged at: " + timeString;
      logFile.println(log);
      logFile.close();
    }
    else {
      Serial.println("Error opening log file");
    }
    Serial.print("Event logged at: ");
    Serial.println(timeString); //Print the log entry to the serial monitor
  }

  // Check if both switches are no longer pulled high
  if (digitalRead(SWITCH1) == LOW && digitalRead(SWITCH2) == LOW) {
    // Turn off red LED and turn on green LED
    digitalWrite(RED_LED, LOW);
    digitalWrite(GREEN_LED, HIGH);

    // Reset switch state
    switch1_state = 0;
    switch2_state = 0;
  }
}