backend/buisnesslogic/src/main/java/com/plannaplan/entities/User.java

package com.plannaplan.entities;

import java.sql.Timestamp;
import java.util.concurrent.TimeUnit;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

import com.plannaplan.types.UserRoles;

/**
 *  Entity of User grouping of state ssociated about id,name,surname,email,role,token,tokenCreatedDate
 */

@Entity
public class User {
    private static final float TOKEN_EXPIRE_MINUTES = 15;

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    private String name;
    private String surname;
    private String email;
    private UserRoles role;
    private String token;
    private Timestamp tokenUsageDate;

    public User() {
    }

    public User(String name, String surname, String mail, UserRoles role) {
        this.name = name;
        this.surname = surname;
        this.email = mail;
        this.role = role;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public Timestamp getTokenUsageDate() {
        return tokenUsageDate;
    }

    public String getToken() {
        return token;
    }

    public void setToken(String token) {
        this.tokenUsageDate = new Timestamp(System.currentTimeMillis());
        this.token = token;
    }

    public String getName() {
        return name;
    }

    public UserRoles getRole() {
        return role;
    }

    public void setRole(UserRoles role) {
        this.role = role;
    }

    public String getSurname() {
        return surname;
    }

    public void setSurname(String surname) {
        this.surname = surname;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Long getId() {
        return this.id;
    }

    public boolean isCredentialsNonExpired() {
        final long diffInMilliseconds = Math
                .abs(this.tokenUsageDate.getTime() - new Timestamp(System.currentTimeMillis()).getTime());
        final long minutes = TimeUnit.MILLISECONDS.toMinutes(diffInMilliseconds);

        if (minutes > TOKEN_EXPIRE_MINUTES) {
            return false;
        }
        this.tokenUsageDate = new Timestamp(System.currentTimeMillis());
        return true;
    }
}