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package com.spice.profitmandi.common.util;
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import java.time.Instant;
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import java.time.LocalDate;
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import java.time.LocalDateTime;
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import java.time.LocalTime;
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import java.time.ZoneId;
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import java.time.format.DateTimeFormatter;
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import java.time.format.DateTimeParseException;
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import java.util.ArrayList;
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import java.util.List;
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import javax.mail.internet.InternetAddress;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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public class StringUtils {
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	private static ObjectMapper objectMapper = new ObjectMapper();
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	private static final Logger LOGGER = LoggerFactory.getLogger(StringUtils.class);
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	private static final String DATE_PATTERN = "MM/dd/yyyy";
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	private StringUtils(){
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	}
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	public static final LocalDate toDate(String dateString)throws DateTimeParseException{
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		LOGGER.info("Converting dateString [{}] with pattern[{}]", dateString, DATE_PATTERN);
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		DateTimeFormatter formatter = DateTimeFormatter.ofPattern(DATE_PATTERN);
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		return LocalDate.parse(dateString, formatter);
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	}
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	public static final LocalTime toTime(String timeString) throws DateTimeParseException{
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		return LocalTime.parse(timeString);
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	}
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	public static final LocalDateTime toDateTime(long epocTime){
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		return Instant.ofEpochMilli(epocTime).atZone(ZoneId.systemDefault()).toLocalDateTime();
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	}
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	public static final String toString(LocalDate localDate){
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		DateTimeFormatter formatter = DateTimeFormatter.ofPattern(DATE_PATTERN);
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		String formattedDateTime = localDate.format(formatter); // "1986-04-08 12:30"
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		return formattedDateTime;
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	}
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	public static final LocalDateTime toDateTime(String dateTimeString) throws DateTimeParseException{
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		if(dateTimeString == null || dateTimeString.equals("0")){
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			return null;
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		}
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		LocalDateTime date =
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				  Instant.ofEpochMilli(Long.valueOf(dateTimeString))
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				  .atZone(ZoneId.systemDefault())
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				  .toLocalDateTime();
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		return date;
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	}
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	public static boolean isValidMobile(String mobile){
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		try{
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			Long.valueOf(mobile);
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		}
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		catch(Exception e){
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			return false;
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		}
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		if (mobile.startsWith("0")){
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			return false;
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		}
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		if (mobile.length()!=10){
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			return false;
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		}
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		return true;
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	}
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	public static boolean isValidEmailAddress(String email) {
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		boolean result = true;
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		try {
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			InternetAddress emailAddr = new InternetAddress(email);
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			emailAddr.validate();
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		} catch (Exception ex) {
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			result = false;
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		}
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		return result;
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	}
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	public static List<String> getDuplicateElements(List<String> elements){
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		List<String> duplicates = new ArrayList<>();
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		for(int i = 0; i < elements.size(); i++){
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			for(int j = i + 1; j < elements.size(); j++){
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				if(elements.get(i).equals(elements.get(j))){
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					duplicates.add(elements.get(i));
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				}
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			}
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		}
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		return duplicates;
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	}
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	public static String toString(Object object) throws Exception{
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		try {
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			return objectMapper.writeValueAsString(object);
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		} catch (JsonProcessingException e) {
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			LOGGER.error("Error occured while converting object to json", e);
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			throw e;
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		}
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	}
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	public static boolean isValidPinCode(String pinCode){
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		if(pinCode == null || pinCode.isEmpty()){
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			return false;
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		}
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		if(pinCode.length() != 6){
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			return false;
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		}
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		if(pinCode.startsWith("00") || pinCode.startsWith("01") || pinCode.startsWith("10")){
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			return false;
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		}
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		return true;
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	}
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	public static String generatePolicyNumber(String prefix, int sequence){
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		String policyNumber = String.format(prefix + "%06d", sequence);
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		LOGGER.info("Generated Policy Number {}", policyNumber);
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		return policyNumber;
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	}
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}