#include <WiFi.h>
#include <FirebaseESP32.h>
#include "time.h"
#include <ESP_Mail_Client.h>

// LDR Characteristics
const float GAMMA = 0.7;
const float RL10 = 50;

const char* ntpServer = "pool.ntp.org";
const long  gmtOffset_sec = 21600;
const int   daylightOffset_sec = 3600;
int val;
int valNew;
String pathData = "data";
String path = "/";
String pathTime = "/time";
String pathLux = "/lux";
int i = 0;

#define FIREBASE_HOST "https://projectiot-50bf2-default-rtdb.firebaseio.com/"
#define FIREBASE_AUTH "AIzaSyBKsntCGEPvdU04evvxlRC2nedNvVmUNf0"
#define SMTP_HOST "smtp.gmail.com"
#define SMTP_PORT 465

/* The sign in credentials */
#define AUTHOR_EMAIL "[email protected]"
#define AUTHOR_PASSWORD "wixbzxgzxnmnemtr"

/* Recipient's email*/
#define RECIPIENT_EMAIL "[email protected]"

/* The SMTP Session object used for Email sending */
SMTPSession smtp;
void smtpCallback(SMTP_Status status);


WiFiClient wifiClient;


FirebaseData firebaseData;
FirebaseESP32 firebase;
FirebaseJson firebaseJson;

void setup() {
  Serial.begin(9600);
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");

  // Init and get the time
  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);

  pinMode(2, OUTPUT);
   
  smtp.debug(1);
  smtp.callback(smtpCallback);


  /* Declare the session config data */
  ESP_Mail_Session session;

  /* Set the session config */
  session.server.host_name = SMTP_HOST;
  session.server.port = SMTP_PORT;
  session.login.email = AUTHOR_EMAIL;
  session.login.password = AUTHOR_PASSWORD;
  session.login.user_domain = "";

  /* Declare the message class */
  SMTP_Message message;

  /* Set the message headers */
  message.sender.name = "ESP";
  message.sender.email = AUTHOR_EMAIL;
  message.subject = "ESP Test Email";
  message.addRecipient("Sara", RECIPIENT_EMAIL); 

  //Send raw text message
  String textMsg = "Hello World! - Sent from ESP board";
  message.text.content = textMsg.c_str();
  message.text.charSet = "us-ascii";
  message.text.transfer_encoding = Content_Transfer_Encoding::enc_7bit;

  if (!smtp.connect(&session))
    return;

  /* Start sending Email and close the session */
  if (!MailClient.sendMail(&smtp, &message))
    Serial.println("Error sending Email, " + smtp.errorReason());

}

void loop() {
  struct tm timeinfo;
    if(!getLocalTime(&timeinfo)){
      Serial.println("Failed to obtain time");
      return;
    }

  int analogValue = analogRead(34);
  float voltage = analogValue / 4095. * 5;
  float resistance = 2000 * voltage / (1 - voltage / 5);
  float lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));

  val = analogRead(32);
  analogWrite(2, val);

  if(lux>250)
  {
    if(timeinfo.tm_hour >= 9){
      i = i + 1;
      val = analogRead(32);
      analogWrite(32,0);
      analogWrite(2, 0);

      Firebase.begin(FIREBASE_HOST, FIREBASE_AUTH);

      Serial.println(timeinfo.tm_hour);

      // Ghi một giá trị dạng chuỗi lên Firebase
      Firebase.RTDB.setInt(&firebaseData, pathData + path + i + pathTime, timeinfo.tm_hour);
      Firebase.RTDB.setInt(&firebaseData, pathData + path + i + pathLux, lux);
    }
  }
  
  

  delay(5000);
}

void smtpCallback(SMTP_Status status){
  /* Print the current status */
  Serial.println(status.info());

  /* Print the sending result */
  if (status.success()){
    Serial.println("----------------");
    ESP_MAIL_PRINTF("Message sent success: %d\n", status.completedCount());
    ESP_MAIL_PRINTF("Message sent failled: %d\n", status.failedCount());
    Serial.println("----------------\n");
    struct tm dt;

    for (size_t i = 0; i < smtp.sendingResult.size(); i++){
      /* Get the result item */
      SMTP_Result result = smtp.sendingResult.getItem(i);
      time_t ts = (time_t)result.timestamp;
      localtime_r(&ts, &dt);

      ESP_MAIL_PRINTF("Message No: %d\n", i + 1);
      ESP_MAIL_PRINTF("Status: %s\n", result.completed ? "success" : "failed");
      ESP_MAIL_PRINTF("Date/Time: %d/%d/%d %d:%d:%d\n", dt.tm_year + 1900, dt.tm_mon + 1, dt.tm_mday, dt.tm_hour, dt.tm_min, dt.tm_sec);
      ESP_MAIL_PRINTF("Recipient: %s\n", result.recipients.c_str());
      ESP_MAIL_PRINTF("Subject: %s\n", result.subject.c_str());
    }
    Serial.println("----------------\n");
  }
}