package net.curisit.securis.db;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;

import org.codehaus.jackson.annotate.JsonAutoDetect;
import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.annotate.JsonProperty;
import org.codehaus.jackson.map.annotate.JsonSerialize;

/**
 * Entity implementation class for Entity: Users
 * 
 */
@JsonAutoDetect
@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
@Entity
@Table(name = "user")
@NamedQueries({
        @NamedQuery(name = "list-users", query = "SELECT u FROM User u"),
        @NamedQuery(name = "get-user", query = "SELECT u FROM User u where u.username = :username"),
        @NamedQuery(name = "auth-user", query = "SELECT u FROM User u where u.username = :username and u.password = :password"),
        @NamedQuery(name = "delete-all-users", query = "delete FROM User u")
})
public class User implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    private String username;

    private String password;

    @JsonProperty(value = "first_name")
    @Column(name = "first_name")
    private String firstName;

    @JsonProperty(value = "last_name")
    @Column(name = "last_name")
    private String lastName;

    private int roles;

    @Column(name = "last_login")
    private Date lastLogin;

    @Column(name = "modification_timestamp")
    private Date modificationTimestamp;

    @Column(name = "creation_timestamp")
    @JsonProperty("creation_timestamp")
    private Date creationTimestamp;

    private String lang;

    @JsonIgnore
    @ManyToMany
    @JoinTable(name = "user_organization", //
    joinColumns = {
        @JoinColumn(name = "username", referencedColumnName = "username")
    }, //
    inverseJoinColumns = {
        @JoinColumn(name = "organization_id", referencedColumnName = "id")
    } //
    )
    private Set<Organization> organizations;

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    @JsonProperty("password")
    public String getDummyPassword() {
        return null;
    }

    public String getPassword() {
        return password;
    }

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

    public List<Integer> getRoles() {
        if (roles == 0) {
            return null;
        }
        List<Integer> aux = new ArrayList<>();
        for (int rol : Rol.ALL) {
            if ((roles & rol) != 0) { // Each rol is a number with only 1 bit ==
                                      // 1 in binary representation
                aux.add(rol);
            }
        }
        return aux;
    }

    public void setRoles(List<Integer> roles) {
        this.roles = 0;
        if (roles != null) {
            for (Integer rol : roles) {
                this.roles |= rol;
            }
        }
    }

    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 Date getLastLogin() {
        return lastLogin;
    }

    public void setLastLogin(Date lastLogin) {
        this.lastLogin = lastLogin;
    }

    public Date getModificationTimestamp() {
        return modificationTimestamp;
    }

    public void setModificationTimestamp(Date modificationTimestamp) {
        this.modificationTimestamp = modificationTimestamp;
    }

    public Date getCreationTimestamp() {
        return creationTimestamp;
    }

    public void setCreationTimestamp(Date creationTimestamp) {
        this.creationTimestamp = creationTimestamp;
    }

    @Override
    public String toString() {
        return "{User: " + username + " Name: " + firstName + " " + lastName + ", last login: " + lastLogin + "}";
    }

    public String getLang() {
        return lang;
    }

    public void setLang(String lang) {
        this.lang = lang;
    }

    public Set<Organization> getOrganizations() {
        return organizations;
    }

    public void setOrganizations(Set<Organization> organizations) {
        this.organizations = organizations;
    }

    @JsonProperty("organizations_ids")
    public void setOrgsIds(List<Integer> orgsIds) {
        organizations = new HashSet<>();
        for (Integer orgid : orgsIds) {
            Organization o = new Organization();
            o.setId(orgid);
            organizations.add(o);
        }
    }

    @JsonProperty("organizations_ids")
    public Set<Integer> getOrgsIds() {
        if (organizations == null) {
            return null;
        }
        Set<Integer> ids = new HashSet<>();
        for (Organization org : organizations) {
            ids.add(org.getId());
        }
        return ids;
    }

    @JsonIgnore
    public Set<Integer> getAllOrgsIds() {
        if (organizations == null) {
            return null;
        }
        Set<Integer> ids = new HashSet<>();
        includeAllOrgs(this.organizations, ids);
        return ids;
    }

    private void includeAllOrgs(Set<Organization> list, Set<Integer> orgIds) {
        for (Organization org : list) {
            orgIds.add(org.getId());
            includeAllOrgs(org.getChildOrganizations(), orgIds);
        }
    }

    public static class Rol {
        public static final int ADVANCE = 0x01;
        public static final int ADMIN = 0x02;
        public static final int[] ALL = new int[] {
                ADVANCE, ADMIN
        };
    }

}