package ru.ulstu.user.model;

import org.hibernate.annotations.BatchSize;
import org.hibernate.validator.constraints.Email;
import ru.ulstu.configuration.Constants;
import ru.ulstu.core.model.BaseEntity;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
import java.util.Collection;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;

@Entity
@Table(name = "users")
public class User extends BaseEntity {
    private final static String USER_ABBREVIATE_TEMPLATE = "%s %s%s";

    @NotNull
    @Pattern(regexp = Constants.LOGIN_REGEX)
    @Size(min = 1, max = 50)
    @Column(length = 50, unique = true, nullable = false)
    private String login;

    @NotNull
    @Size(min = 60, max = 60)
    @Column(name = "password_hash", length = 60, nullable = false)
    private String password;

    @NotNull
    @Size(max = 50)
    @Column(name = "first_name", length = 50, nullable = false)
    private String firstName;

    @NotNull
    @Size(max = 50)
    @Column(name = "last_name", length = 50, nullable = false)
    private String lastName;

    @Size(max = 50)
    @Column(name = "patronymic", length = 50)
    private String patronymic;

    @NotNull
    @Email
    @Size(min = 5, max = 100)
    @Column(length = 100, nullable = false, unique = true)
    private String email;

    @NotNull
    @Column(nullable = false)
    private boolean activated;

    @Size(max = 20)
    @Column(name = "activation_key", length = 20)
    private String activationKey;

    @Column(name = "activation_date")
    @Temporal(TemporalType.TIMESTAMP)
    private Date activationDate;

    @Size(max = 20)
    @Column(name = "reset_key", length = 20)
    private String resetKey;

    @Column(name = "reset_date")
    @Temporal(TemporalType.TIMESTAMP)
    private Date resetDate;

    @ManyToMany
    @JoinTable(
            name = "user_role",
            joinColumns = {@JoinColumn(name = "user_id", referencedColumnName = "id")},
            inverseJoinColumns = {@JoinColumn(name = "user_role_name", referencedColumnName = "name")})
    @BatchSize(size = 20)
    private Set<UserRole> roles;

    @Column(name = "birth_date")
    @Temporal(TemporalType.TIMESTAMP)
    private Date birthDate;

    public enum UserDegree {
        CANDIDATE("Кандидат технических наук"),
        DOCTOR("Доктор технических наук");

        private String degreeName;

        UserDegree(String degreeName) {
            this.degreeName = degreeName;
        }

        public String getDegreeName() {
            return degreeName;
        }
    }

    @Enumerated(value = EnumType.STRING)
    private UserDegree degree;

    public User() {
        roles = new HashSet<>();
        activated = false;
        activationDate = new Date();
        resetDate = null;
    }

    public String getLogin() {
        return login;
    }

    public void setLogin(String login) {
        this.login = login.toLowerCase();
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getEmail() {
        return email;
    }

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

    public boolean getActivated() {
        return activated;
    }

    public void setActivated(boolean activated) {
        this.activated = activated;
    }

    public String getActivationKey() {
        return activationKey;
    }

    public void setActivationKey(String activationKey) {
        this.activationKey = activationKey;
    }

    public Date getActivationDate() {
        return activationDate;
    }

    public void setActivationDate(Date activationDate) {
        this.activationDate = activationDate;
    }

    public String getResetKey() {
        return resetKey;
    }

    public void setResetKey(String resetKey) {
        this.resetKey = resetKey;
    }

    public Date getResetDate() {
        return resetDate;
    }

    public void setResetDate(Date resetDate) {
        this.resetDate = resetDate;
    }

    public Set<UserRole> getRoles() {
        return roles;
    }

    public void setRoles(Collection<UserRole> roles) {
        this.roles.clear();
        this.roles.addAll(roles);
    }

    public String getPatronymic() {
        return patronymic;
    }

    public void setPatronymic(String patronymic) {
        this.patronymic = patronymic;
    }

    public Date getBirthDate() {
        return birthDate;
    }

    public void setBirthDate(Date birthDate) {
        this.birthDate = birthDate;
    }

    public UserDegree getDegree() {
        return degree;
    }

    public void setDegree(UserDegree degree) {
        this.degree = degree;
    }

    public String getUserAbbreviate() {
        return String.format(USER_ABBREVIATE_TEMPLATE,
                lastName == null ? "" : lastName,
                firstName == null ? "" : firstName.substring(0, 1) + ".",
                patronymic == null ? "" : patronymic.substring(0, 1) + ".");
    }
}