package net.curisit.securis.db;

import java.io.Serializable;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Map;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.Table;

import net.curisit.integrity.commons.Utils;

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

/**
 * Entity implementation class for Entity: license
 * 
 */
@JsonAutoDetect
@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
@Entity
@Table(name = "license")
@JsonIgnoreProperties(ignoreUnknown = true)
@NamedQueries({
    @NamedQuery(name = "list-licenses-by-pack", query = "SELECT l FROM License l where l.pack.id = :packId")
})
public class License implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue
    private int id;

    private String code;

    @JsonIgnore
    @ManyToOne
    @JoinColumn(name = "pack_id")
    private Pack pack;

    @JsonIgnore
    @ManyToOne
    @JoinColumn(name = "created_by")
    private User createdBy;

    @JsonIgnore
    @ManyToOne
    @JoinColumn(name = "canceled_by")
    private User canceledBy;

    private int status;

    @Column(name = "full_name")
    @JsonProperty("full_name")
    private String fullName;

    private String email;

    @Column(name = "request_data")
    @JsonProperty("request_data")
    private String requestData;

    @Column(name = "license_data")
    @JsonProperty("license_data")
    private String licenseData;

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

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

    @Column(name = "last_access_timestamp")
    private Date lastAccessTimestamp;

    @Column(name = "expiration_date")
    private Date expirationDate;

    private String comments;

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "license")
    private List<LicenseHistory> history;

    public int getId() {
        return id;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public Date getCreationTimestamp() {
        return creationTimestamp;
    }

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

    public User getCreatedBy() {
        return createdBy;
    }

    public void setCreatedBy(User createdBy) {
        this.createdBy = createdBy;
    }

    public Pack getPack() {
        return pack;
    }

    public void setPack(Pack pack) {
        this.pack = pack;
    }

    @JsonProperty("created_by_id")
    public String getCreatedById() {
        return createdBy == null ? null : createdBy.getUsername();
    }

    @JsonProperty("created_by_id")
    public void setCreatedById(String username) {
        if (username == null) {
            createdBy = null;
        } else {
            createdBy = new User();
            createdBy.setUsername(username);
        }
    }

    @JsonProperty("canceled_by_id")
    public String getCanceledById() {
        return canceledBy == null ? null : canceledBy.getUsername();
    }

    @JsonProperty("canceled_by_id")
    public void setCanceledById(String username) {
        if (username == null) {
            canceledBy = null;
        } else {
            canceledBy = new User();
            canceledBy.setUsername(username);
        }
    }

    @JsonProperty("pack_code")
    public String getPackCode() {
        return pack == null ? null : pack.getCode();
    }

    @JsonProperty("pack_id")
    public Integer getPackId() {
        return pack == null ? null : pack.getId();
    }

    @JsonProperty("pack_id")
    public void setPackId(Integer idPack) {
        if (idPack == null) {
            pack = null;
        } else {
            pack = new Pack();
            pack.setId(idPack);
        }
    }

    public int getStatus() {
        return status;
    }

    public void setStatus(int status) {
        this.status = status;
    }

    public Date getModificationTimestamp() {
        return modificationTimestamp;
    }

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

    public String getFullName() {
        return fullName;
    }

    public void setFullName(String fullName) {
        this.fullName = fullName;
    }

    public String getEmail() {
        return email;
    }

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

    public void setId(int id) {
        this.id = id;
    }

    public User getCanceledBy() {
        return canceledBy;
    }

    public void setCanceledBy(User canceledBy) {
        this.canceledBy = canceledBy;
    }

    public Date getLastAccessTimestamp() {
        return lastAccessTimestamp;
    }

    public void setLastAccessTimestamp(Date lastAccessTimestamp) {
        this.lastAccessTimestamp = lastAccessTimestamp;
    }

    public String getRequestData() {
        return requestData;
    }

    public void setRequestData(String requestData) {
        this.requestData = requestData;
    }

    public String getLicenseData() {
        return licenseData;
    }

    public void setLicenseData(String licenseData) {
        this.licenseData = licenseData;
    }

    public String getComments() {
        return comments;
    }

    public void setComments(String comments) {
        this.comments = comments;
    }

    public List<LicenseHistory> getHistory() {
        return history;
    }

    public void setHistory(List<LicenseHistory> history) {
        this.history = history;
    }

    public Date getExpirationDate() {
        return expirationDate;
    }

    public void setExpirationDate(Date expirationDate) {
        this.expirationDate = expirationDate;
    }

    public static class Action {
        public static final int CREATE = 1;
        public static final int REQUEST = 2;
        public static final int ACTIVATION = 3;
        public static final int SEND = 4;
        public static final int DOWNLOAD = 5;
        public static final int CANCEL = 6;
        public static final int DELETE = 7;
    }

    public static class Status {
        public static final int CREATED = 1;
        public static final int REQUESTED = 2;
        public static final int PREACTIVE = 3;
        public static final int ACTIVE = 4;
        public static final int EXPIRED = 5;
        public static final int CANCELED = 6;
        public static final int DELETED = 7;

        private static final Map<Integer, List<Integer>> transitions = Utils.createMap( //
                Action.REQUEST, Arrays.asList(CREATED, REQUESTED), //
                Action.ACTIVATION, Arrays.asList(REQUESTED, PREACTIVE, EXPIRED), //
                Action.SEND, Arrays.asList(ACTIVE, PREACTIVE), //
                Action.DOWNLOAD, Arrays.asList(ACTIVE, PREACTIVE), //
                Action.CANCEL, Arrays.asList(ACTIVE, PREACTIVE, REQUESTED, EXPIRED), //
                Action.DELETE, Arrays.asList(CANCELED, CREATED) //

                );

        /**
         * It checks if a given action is valid for the License, passing the
         * action and the current license status
         * 
         * @param oldStatus
         * @param newStatus
         * @return
         */
        public static boolean isActionValid(Integer action, Integer currentStatus) {
            List<Integer> validStatuses = transitions.get(currentStatus);

            return validStatuses != null && validStatuses.contains(currentStatus);
        }
    }
}