// CompleteRevocationRefs.cs
//
// XAdES Starter Kit for Microsoft .NET 3.5 (and above)
// 2010 Microsoft France
// Published under the CECILL-B Free Software license agreement.
// (http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.txt)
// 
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, 
// WHETHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED 
// WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE. 
// THE ENTIRE RISK OF USE OR RESULTS IN CONNECTION WITH THE USE OF THIS CODE 
// AND INFORMATION REMAINS WITH THE USER.

using System;
using System.Xml;

namespace Microsoft.Xades
{
    /// <summary>
    /// This clause defines the XML element containing a full set of
    /// references to the revocation data that have been used in the
    /// validation of the signer and CA certificates.
    /// This is an unsigned property that qualifies the signature.
    /// The XML electronic signature aligned with the present document
    /// MAY contain at most one CompleteRevocationRefs element.
    /// </summary>
    public class CompleteRevocationRefs
    {
        #region Private variables
        private string id;
        private CRLRefs crlRefs;
        private OCSPRefs ocspRefs;
        private OtherRefs otherRefs;
        #endregion

        #region Public properties
        /// <summary>
        /// The optional Id attribute can be used to make a reference to the CompleteRevocationRefs element
        /// </summary>
        public string Id
        {
            get
            {
                return this.id;
            }
            set
            {
                this.id = value;
            }
        }

        /// <summary>
        /// Sequences of references to CRLs
        /// </summary>
        public CRLRefs CRLRefs
        {
            get
            {
                return this.crlRefs;
            }
            set
            {
                this.crlRefs = value;
            }
        }

        /// <summary>
        /// Sequences of references to OCSP responses
        /// </summary>
        public OCSPRefs OCSPRefs
        {
            get
            {
                return this.ocspRefs;
            }
            set
            {
                this.ocspRefs = value;
            }
        }

        /// <summary>
        /// Other references to alternative forms of revocation data
        /// </summary>
        public OtherRefs OtherRefs
        {
            get
            {
                return this.otherRefs;
            }
            set
            {
                this.otherRefs = value;
            }
        }
        #endregion

        #region Constructors
        /// <summary>
        /// Default constructor
        /// </summary>
        public CompleteRevocationRefs()
        {
            this.crlRefs = new CRLRefs();
            this.ocspRefs = new OCSPRefs();
            this.otherRefs = new OtherRefs();
        }
        #endregion

        #region Public methods
        /// <summary>
        /// Check to see if something has changed in this instance and needs to be serialized
        /// </summary>
        /// <returns>Flag indicating if a member needs serialization</returns>
        public bool HasChanged()
        {
            bool retVal = false;

            if (!String.IsNullOrEmpty(this.id))
            {
                retVal = true;
            }
            if (this.crlRefs != null && this.crlRefs.HasChanged())
            {
                retVal = true;
            }
            if (this.ocspRefs != null && this.ocspRefs.HasChanged())
            {
                retVal = true;
            }
            if (this.otherRefs != null && this.otherRefs.HasChanged())
            {
                retVal = true;
            }

            return retVal;
        }

        /// <summary>
        /// Load state from an XML element
        /// </summary>
        /// <param name="xmlElement">XML element containing new state</param>
        public void LoadXml(System.Xml.XmlElement xmlElement)
        {
            XmlNamespaceManager xmlNamespaceManager;
            XmlNodeList xmlNodeList;

            if (xmlElement == null)
            {
                throw new ArgumentNullException("xmlElement");
            }
            if (xmlElement.HasAttribute("Id"))
            {
                this.id = xmlElement.GetAttribute("Id");
            }
            else
            {
                this.id = "";
            }

            xmlNamespaceManager = new XmlNamespaceManager(xmlElement.OwnerDocument.NameTable);
            xmlNamespaceManager.AddNamespace("xsd", XadesSignedXml.XadesNamespaceUri);

            xmlNodeList = xmlElement.SelectNodes("xsd:CRLRefs", xmlNamespaceManager);
            if (xmlNodeList.Count != 0)
            {
                this.crlRefs = new CRLRefs();
                this.crlRefs.LoadXml((XmlElement)xmlNodeList.Item(0));
            }
            xmlNodeList = xmlElement.SelectNodes("xsd:OCSPRefs", xmlNamespaceManager);
            if (xmlNodeList.Count != 0)
            {
                this.ocspRefs = new OCSPRefs();
                this.ocspRefs.LoadXml((XmlElement)xmlNodeList.Item(0));
            }
            xmlNodeList = xmlElement.SelectNodes("xsd:OtherRefs", xmlNamespaceManager);
            if (xmlNodeList.Count != 0)
            {
                this.otherRefs = new OtherRefs();
                this.otherRefs.LoadXml((XmlElement)xmlNodeList.Item(0));
            }
        }

        /// <summary>
        /// Returns the XML representation of the this object
        /// </summary>
        /// <returns>XML element containing the state of this object</returns>
        public XmlElement GetXml()
        {
            XmlDocument creationXmlDocument;
            XmlElement retVal;

            creationXmlDocument = new XmlDocument();
            retVal = creationXmlDocument.CreateElement("xades", "CompleteRevocationRefs", XadesSignedXml.XadesNamespaceUri);
            if (!String.IsNullOrEmpty(this.id))
            {
                retVal.SetAttribute("Id", this.id);
            }
            if (this.crlRefs != null && this.crlRefs.HasChanged())
            {
                retVal.AppendChild(creationXmlDocument.ImportNode(this.crlRefs.GetXml(), true));
            }
            if (this.ocspRefs != null && this.ocspRefs.HasChanged())
            {
                retVal.AppendChild(creationXmlDocument.ImportNode(this.ocspRefs.GetXml(), true));
            }
            if (this.otherRefs != null && this.otherRefs.HasChanged())
            {
                retVal.AppendChild(creationXmlDocument.ImportNode(this.otherRefs.GetXml(), true));
            }

            return retVal;
        }
        #endregion
    }
}