package model.ca;

import model.asn1.*;
import model.asn1.exceptions.ParseException;
import model.pki.cert.TbsCertificate;
import model.x501.AttributeTypeAndValue;
import model.x501.Name;
import model.x501.RelativeDistinguishedName;

import java.util.List;

/**
 * Represents a certificate template. Certificate templates are like policies the define part of the issued certificates
 * of what to have in common.
 */
public class Template {
    /**
     * Name of the template.
     */
    private String name;

    /**
     * Whether the template is usable or not.
     */
    private boolean enabled;

    /**
     * Subject of the issued certs. Null -> unspecified
     */
    private Name subject;

    /**
     * Length of validity in days since the point of issue.
     */
    private long validity;

    /**
     * EFFECTS: Init with all given parameters.
     * REQUIRES: name should be non-null; subject should be a valid X.509 subject name; validity should be > 0
     */
    public Template(String name,
                    boolean enabled,
                    Name subject,
                    long validity) {
        this.name = name;
        this.enabled = enabled;
        this.subject = subject;
        this.validity = validity;
    }

    public String getName() {
        return name;
    }

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

    public boolean isEnabled() {
        return enabled;
    }

    public void setEnabled(boolean enabled) {
        this.enabled = enabled;
    }

    public Name getSubject() {
        return subject;
    }

    public void setSubject(Name subject) {
        this.subject = subject;
    }

    /**
     * EFFECTS: Set the subject to CN=commonName,C=CA
     *   Throws {@link ParseException} if commonName is not a valid PrintableString
     */
    public void setSubject(String commonName) throws ParseException {
        if (commonName == null) {
            this.subject = null;
            return;
        }
        setSubject(new Name(ASN1Object.TAG_SEQUENCE, null, new RelativeDistinguishedName[]{
                new RelativeDistinguishedName(ASN1Object.TAG_SET, null, new AttributeTypeAndValue[]{
                        new AttributeTypeAndValue(ASN1Object.TAG_SEQUENCE, null,
                                new ObjectIdentifier(ObjectIdentifier.TAG, null,
                                        ObjectIdentifier.OID_CN),
                                new PrintableString(PrintableString.TAG, null, commonName))}),
                new RelativeDistinguishedName(ASN1Object.TAG_SET, null, new AttributeTypeAndValue[]{
                        new AttributeTypeAndValue(ASN1Object.TAG_SEQUENCE, null,
                                new ObjectIdentifier(ObjectIdentifier.TAG, null,
                                        ObjectIdentifier.OID_C),
                                new PrintableString(PrintableString.TAG, null, "CA"))})}));
    }

    public long getValidity() {
        return validity;
    }

    public void setValidity(long validity) {
        this.validity = validity;
    }
}