Arduino - Set Email List via Web

#include "SPI.h"
#include "Phpoc.h"
#include <EEPROM.h>

#ifndef EOF
#define EOF (-1)
#endif

#define CMD_ARDUINO_DEL 0
#define CMD_ARDUINO_GET 1
#define CMD_ARDUINO_ADD 2
#define CMD_WEB_CLR		5
#define CMD_WEB_UPD		6

#define MAX_NUM_EMAIL	10

class EepromCSV
{
    public:
        void clear(void);
        int line(void);
        String readLine(int line);
        void writeLine(String lineStr);
};

EepromCSV EepromCSV;
PhpocServer webServer(80);

String emailArray[MAX_NUM_EMAIL];
int numEmail;

int lastState = 1;
unsigned long lastUpdateTime;

void setup() {
    Serial.begin(9600);
    while(!Serial)
        ;
    Phpoc.begin(PF_LOG_SPI | PF_LOG_NET);
    webServer.beginWebSocket("arduino");

    Serial.print("WebSocket server address : ");
    Serial.println(Phpoc.localIP());

	//EepromCSV.clear();
	eepromToEmailList(); // load email from EEPROM

	lastState = digitalRead(A0);
	lastUpdateTime = millis();
}

void loop() {
    checkEmailListUpdate(); // check whether there is any config command from Web or not.

	int currentState = digitalRead(A0);

	if((millis() - lastUpdateTime) > 1000) // 1 second 
	{
		if(lastState != currentState)
		{
			if (lastState == 1 && currentState == 0) 
			{ // if door is opened...
				for(int i = 0; i < numEmail; i++)
				{
					sendRelayGmail(emailArray[i]);
					delay(1000);
				}

				lastUpdateTime = millis();
			}
			else
			if(lastState == 0 && currentState == 1)
			{ // if door is closed...
				// Write codes in the same way
			}

			lastState = currentState;
		}
	}
}

void sendRelayGmail(String emailAddress)
{
	PhpocEmail email;
	char charEmailAddr[50];

    emailAddress.toCharArray(charEmailAddr, emailAddress.length() + 1);

	email.setOutgoingServer("smtp.gmail.com", 587);
	email.setOutgoingLogin("example@gmail.com", "example_password");

	email.setFrom("example@gmail.com", "From Arduino Gmail");
	email.setTo(charEmailAddr, "To Whom It May Concern");

	email.setSubject(F("Door is opened. [#905]"));  // Mail Subject

	// Mail Contents
	email.beginMessage();
	email.println(F("#905"));
	email.println("");
	email.println(F("Door is opened."));
	email.endMessage();

	if (email.send() > 0)  // Send Email
		Serial.print(F("Your Mail has been sent successfully to "));
	else
		Serial.print(F("Your Mail is not sent to "));

	Serial.println(emailAddress);
}
void eepromToEmailList(void) {
	int lineCount = EepromCSV.line();

	if(lineCount > MAX_NUM_EMAIL)
		lineCount = MAX_NUM_EMAIL;

	for(int i = 0; i < lineCount; i++)
	{
		String line; 

		line = EepromCSV.readLine(i);
		emailArray[i] = line.substring(0, line.indexOf("\n"));
	}

	numEmail = lineCount;
}
void sendToWeb(String data) {
	char wbuf[50];

    data.toCharArray(wbuf, data.length() + 1);
    webServer.write(wbuf, data.length());
}
void checkEmailListUpdate(void) {
    // wait for a new client:
	PhpocClient client = webServer.available();

	if (client) 
	{
		// read a string that is terminated by a carriage return and a newline
		// characters:
		String data = client.readLine();

		if(data)
		{
			String email;
			int cmd;

            cmd = data.substring(0, 1).toInt();

			if(cmd == CMD_ARDUINO_GET)
			{
				int lineCount = EepromCSV.line();

				sendToWeb(String(CMD_WEB_CLR) + ",0\n"); /* tell web clear to load new email */

                for(int i = 0; i < lineCount; i++) 
				{
                    email = EepromCSV.readLine(i); /* read email from EEPROM one by one */
                    sendToWeb(String(CMD_WEB_UPD) + "," + email + "\n"); /* send email to Web */
                }
            }
			else
			if(cmd == CMD_ARDUINO_DEL) 
			{
				email = data.substring(2, data.indexOf("\r\n"));

				EepromCSV.clear(); /* clear to update new email */

				for(int i = 0; i < numEmail; i++)
				{
					if(!emailArray[i].equals(email)) 
						EepromCSV.writeLine( emailArray[i]); /* write email to EEPROM */
				}

				eepromToEmailList(); /* reload email from EEPROM */
            }
            else
			if(cmd == CMD_ARDUINO_ADD)
			{
				email = data.substring(2, data.lastIndexOf("\r\n"));

				if(email.length())
				{
					EepromCSV.writeLine(email); /* write email to EEPROM */
					eepromToEmailList(); /* reload email from EEPROM */
				}
            }
        }
    }
}

void EepromCSV::clear(void) {
	EEPROM.write(0, EOF);
	Serial.println(F("EepromCSV::clear"));
}
int EepromCSV::line(void) {
	int lineCount   = 0;
	int address     = 0;
	char value;

	while(1) {
		value = EEPROM.read(address++);

		if(value == '\n')
			lineCount++;
		else if(value == EOF)
			return lineCount;
	}
}
String EepromCSV::readLine(int line) {
	String retStr   = "";
	char value;
	int lineIndx    = 0;
	int address     = 0;

	while(lineIndx < line) {
		value = EEPROM.read(address++);
		if(value == '\n')
			lineIndx++;
		else if (value == EOF) {
			return "";
		}
	}

	while(1) {
		value = EEPROM.read(address++);

		if(value == '\n' || value == EOF)
		{
			Serial.print(F("EepromCSV::readLine:"));
			Serial.println(retStr);

			return retStr;
		}
		else
			retStr += value;
	}
}
void EepromCSV::writeLine(String lineStr) { /* add new line at the end of CSV file*/
	int address, length;

	address	= 0;
	length	= lineStr.length();

	while((char)EEPROM.read(address++) != EOF)
		;
	address--;

	for(int i = 0; i < length; i++)
		EEPROM.write(address++, lineStr.charAt(i));

	EEPROM.write(address++, '\n');
	EEPROM.write(address, EOF);

	Serial.print(F("EepromCSV::writeLine:"));
	Serial.println(lineStr);
}