package de.mpiwg.itgroup.eSciDoc.Tools;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.xml.rpc.ServiceException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.xmlrpc.XmlRpcException;
import org.apache.xmlrpc.client.XmlRpcClient;
import org.apache.xmlrpc.client.XmlRpcClientConfigImpl;
import org.jdom.Attribute;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.Namespace;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
import org.jdom.xpath.XPath;



//import fedora.client.FedoraClient;
//import fedora.server.access.FedoraAPIA;
//import fedora.server.management.FedoraAPIM;



public class Ingestor {
		protected  EScidocBasicHandler eSciDocHandler = null;
		protected String ESCIDOC_SERVER_URL;
		protected String ZOPEPROVIDER;
		private String USER;
		private String PASSWORD;
		private int PORT;
	
	public Ingestor(String SERVER_URL,int ServerPort, String ZOPE, String User, String Password)
	{
		ESCIDOC_SERVER_URL = SERVER_URL;
		ZOPEPROVIDER= ZOPE;
		USER = User;
		PASSWORD = Password;
		PORT = ServerPort;
		
	}
	public  String getID() throws MalformedURLException, XmlRpcException {
		XmlRpcClientConfigImpl config = new XmlRpcClientConfigImpl();
		XmlRpcClient client = new XmlRpcClient();
		config.setServerURL(new URL(ZOPEPROVIDER+"/idGenerator"));
		client.setConfig(config);
		Object[] params = new Object[]{};
		return  (String) client.execute("generateId", params);
	}


	
	protected EScidocBasicHandler getEsciDocHandler(){
		if (eSciDocHandler==null)
		{
			eSciDocHandler = new EScidocBasicHandler(ESCIDOC_SERVER_URL,PORT,USER,PASSWORD);
		}
		return eSciDocHandler;
	}
	
	public  String ingest (String command,String xml) throws ServiceException, IOException{
		
		//File ff = new File ("/tmp/test3.xml");
		
		//FileInputStream stream = new FileInputStream(ff);
		InputStream stream = new ByteArrayInputStream(xml.getBytes("utf-8"));
		
		
		
		//DefaultHttpClient httpclient = login();
		
		
		
		HttpResponse eScidocPut = getEsciDocHandler().eScidocPut(command, stream);
		
	    
	    HttpEntity responseEntity = eScidocPut.getEntity();
	
	    System.out.println("----------------------------------------");
	    System.out.println(eScidocPut.getStatusLine());
		
	    InputStream st = responseEntity.getContent();
	    //System.out.println(EScidocBasicHandler.convertStreamToString(st));
	    String xmlret = EScidocBasicHandler.convertStreamToString(st);
	
	    return xmlret;

}

	public  void addToCollection(String collection_url,String newMember) throws ClientProtocolException, IOException{
		HttpResponse ret = getEsciDocHandler().eScidocGet("/ir/container/"+collection_url);
		String retTxt = EScidocBasicHandler.convertStreamToString(ret.getEntity().getContent());
		String dateStamp = EScidocBasicHandler.getDateStamp(retTxt);
		
		
		
		String param = "<param last-modification-date=\""+dateStamp+"\">";
		param+="<id>"+newMember+"</id>";
		param+="</param>";
		
		ByteArrayInputStream stream = new ByteArrayInputStream(param.getBytes());
		HttpResponse result = getEsciDocHandler().eScidocPost("/ir/container/"+collection_url+"/members/add",stream);
		
		System.out.println("----->addResult:"+result.getStatusLine());
		
		System.out.println("added "+newMember+" to "+collection_url);
		
	}

	public  List<String> getAllMembers(String href) throws ClientProtocolException, IOException, JDOMException
	{
		String command=href+"/members/filter";
		//String filter="<param><filter name=\"http://escidoc.de/core/01/structural-relations/context\">escidoc:7017</filter></param>";
		String filter="<param><filter/></param>";
		System.out.println(filter);
		HttpResponse result = getEsciDocHandler().eScidocPost(command, new ByteArrayInputStream(filter.getBytes()));
		
		InputStream stream = result.getEntity().getContent();
		//System.out.println(EScidocBasicHandler.convertStreamToString(stream));
		//stream.reset();
		SAXBuilder builder = new  SAXBuilder();
		
		
		Document doc = builder.build(stream);
		String pid = null;
		XPath xpath = XPath.newInstance("//container:container");
		xpath.addNamespace("container", EScidocNameSpaceContext.container);
		
		List<Element> nodes = xpath.selectNodes(doc);
		
		xpath = XPath.newInstance("//item:item");
		xpath.addNamespace("item", EScidocNameSpaceContext.item);
		nodes.addAll(nodes = xpath.selectNodes(doc));
		
		List<String> ret = new ArrayList<String>();
		
		for (Element el : nodes){
			//XMLOutputter output = new XMLOutputter();
			//output.output(el, System.out);
			xpath =XPath.newInstance("@xlink:href");
			xpath.addNamespace("xlink", EScidocNameSpaceContext.xlink);
			
			Attribute idAtrr = (Attribute) xpath.selectSingleNode(el);
		
			String id = idAtrr.getValue();
			
			
			
			ret.add(id);
		
		}
		
		return ret;
	
			
	}
	public  HashMap<String, String> getPIDsAndEscidocIdsOfCollections(String collectionContainer) throws ClientProtocolException, IOException, JDOMException{
		
		HashMap<String, String> ret = new HashMap<String, String>();
		String command="/ir/container/"+collectionContainer+"/members/filter";
		//String filter="<param><filter name=\"http://escidoc.de/core/01/structural-relations/context\">escidoc:7017</filter></param>";
		String filter="<param><filter/></param>";
		System.out.println(filter);
		HttpResponse result = getEsciDocHandler().eScidocPost(command, new ByteArrayInputStream(filter.getBytes()));
		
		InputStream stream = result.getEntity().getContent();
		//System.out.println(EScidocBasicHandler.convertStreamToString(stream));
		//stream.reset();
		SAXBuilder builder = new  SAXBuilder();
		
		
		Document doc = builder.build(stream);
		String pid = null;
		XPath xpath = XPath.newInstance("//container:container");
		xpath.addNamespace("container", EScidocNameSpaceContext.container);
		
		List<Element> nodes = xpath.selectNodes(doc);
		for (Element el : nodes){
			//XMLOutputter output = new XMLOutputter();
			//output.output(el, System.out);
			xpath =XPath.newInstance(".//container:properties/prop:pid");
			xpath.addNamespace("prop", EScidocNameSpaceContext.prop);
			xpath.addNamespace("container", EScidocNameSpaceContext.container);
			Element pidEl =(Element) xpath.selectSingleNode(el);
			pid =pidEl.getText();
			
			Namespace ns = Namespace.getNamespace("xlink",EScidocNameSpaceContext.xlink);
			
			xpath =XPath.newInstance("@xlink:href");
			xpath.addNamespace(ns);
			
			Attribute idAtrr = (Attribute) xpath.selectSingleNode(el);
			List attrs = el.getAttributes();
			String id = idAtrr.getValue();
			
			String[] splitted = id.split("/");
			
			ret.put(pid, splitted[splitted.length-1]);
		
		}
		
		return ret;
	
			
	}
	protected InputStream getXMLfromPID(String pid,String context)
	throws ClientProtocolException, IOException {
		String filter = "<param><filter name=\"http://escidoc.de/core/01/properties/pid\">";

		filter += pid;
		filter += "</filter></param>";

		String command = "/ir/context/" + context
			+ "/resources/members/filter";
		HttpResponse result = getEsciDocHandler().eScidocPost(command,
		new ByteArrayInputStream(filter.getBytes()));

		return result.getEntity().getContent();

}
	public void deleteAllContentOfCollectionWithPID(String collection_Id, String pid) throws ClientProtocolException, IOException, JDOMException
	{
		 InputStream xmlStream = getXMLfromPID(pid, collection_Id);
		 SAXBuilder builderA = new  SAXBuilder();
		 Document docA = builderA.build(xmlStream);
		 
		 XPath xpathA = XPath.newInstance("//member-list:member-list/container:container/@xlink:href");
		 xpathA.addNamespace("member-list", "http://www.escidoc.de/schemas/memberlist/0.7");
		 xpathA.addNamespace("container", EScidocNameSpaceContext.container);
		 xpathA.addNamespace("xlink", EScidocNameSpaceContext.xlink);
		 
		 List <Attribute> nodesA = xpathA.selectNodes(docA);
		 
		
		
		for (Attribute nodeA: nodesA){
			  String id = nodeA.getValue();
			 String filter="<param><filter/></param>";
			 String command=id+"/members/filter";
			 HttpResponse result = getEsciDocHandler().eScidocPost(command, new ByteArrayInputStream(filter.getBytes()));
			 
			 xmlStream = result.getEntity().getContent();
			 
			
			 XMLOutputter xmlout = new XMLOutputter();
			 SAXBuilder builder = new  SAXBuilder();
			 Document doc = builder.build(xmlStream);
			 
			 XPath xpath = XPath.newInstance("//item:item");
			 xpath.addNamespace("item", EScidocNameSpaceContext.item);
			 List <Element> nodes = xpath.selectNodes(doc);
			 
			 for (Element node: nodes)
			 {
				 xpath = XPath.newInstance("@xlink:href");
				 xpath.addNamespace("xlink", EScidocNameSpaceContext.xlink);
				 Attribute attribute = (Attribute) xpath.selectSingleNode(node);
				 String href = attribute.getValue();
				 delete(href);
			 }
			 
			 xpath = XPath.newInstance("//container:container");
			 xpath.addNamespace("container", EScidocNameSpaceContext.container);
			 nodes = xpath.selectNodes(doc);
			 
			 for (Element node: nodes)
			 {
				 xpath = XPath.newInstance("@xlink:href");
				 xpath.addNamespace("xlink", EScidocNameSpaceContext.xlink);
				 Attribute attribute = (Attribute) xpath.selectSingleNode(node);
				 String href = attribute.getValue();
				 removeMembers(href);
				 delete(href);
			 }
			 delete(id);
			 
		}
	}

	public void deleteAllContentOfCollection(String collection_Id) throws ClientProtocolException, IOException, JDOMException
	{
		HashMap<String, String> pids = getPIDsAndEscidocIdsOfCollections(collection_Id);
		for (String id: pids.values()){
			 String filter="<param><filter/></param>";
			 String command="/ir/container/"+id+"/members/filter";
			 HttpResponse result = getEsciDocHandler().eScidocPost(command, new ByteArrayInputStream(filter.getBytes()));
			 
			 InputStream xmlStream = result.getEntity().getContent();
			 
			
			 XMLOutputter xmlout = new XMLOutputter();
			 SAXBuilder builder = new  SAXBuilder();
			 Document doc = builder.build(xmlStream);
			 
			 XPath xpath = XPath.newInstance("//item:item");
			 xpath.addNamespace("item", EScidocNameSpaceContext.item);
			 List <Element> nodes = xpath.selectNodes(doc);
			 
			 for (Element node: nodes)
			 {
				 xpath = XPath.newInstance("@xlink:href");
				 xpath.addNamespace("xlink", EScidocNameSpaceContext.xlink);
				 Attribute attribute = (Attribute) xpath.selectSingleNode(node);
				 String href = attribute.getValue();
				 delete(href);
			 }
			 
			 xpath = XPath.newInstance("//container:container");
			 xpath.addNamespace("container", EScidocNameSpaceContext.container);
			 nodes = xpath.selectNodes(doc);
			 
			 for (Element node: nodes)
			 {
				 xpath = XPath.newInstance("@xlink:href");
				 xpath.addNamespace("xlink", EScidocNameSpaceContext.xlink);
				 Attribute attribute = (Attribute) xpath.selectSingleNode(node);
				 String href = attribute.getValue();
				 removeMembers(href);
				 delete(href);
			 }
			 
		}
	}

	private void removeMembers(String href) throws ClientProtocolException, IOException, JDOMException {
		
		List<String> cols = getAllMembers(href);
		HttpResponse result = getEsciDocHandler().eScidocGet(href);
		String ret= EScidocBasicHandler.convertStreamToString(result.getEntity().getContent());
		String ds = getEsciDocHandler().getDateStamp(ret);
		
		String delString="<param last-modification-date=\""+ds+"\">";
		for (String colid: cols){
			String[] colids = colid.split("/");
			
			delString+="<id>"+colids[colids.length-1]+"</id>";
		}
		delString += "</param>";
		System.out.println(delString);
		InputStream body = new ByteArrayInputStream(delString.getBytes());
		result = getEsciDocHandler().eScidocPost(href+"/members/remove", body);
		System.out.println("stat:"+result.getStatusLine());
		try {
			System.out.println(EScidocBasicHandler.convertStreamToString(result.getEntity().getContent()));
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

	private void delete(String href) throws ClientProtocolException, IOException {
		System.out.println(href);
		HttpResponse result = getEsciDocHandler().eScidocDelete(href);
		System.out.println("stat:"+result.getStatusLine());
		try {
			System.out.println(EScidocBasicHandler.convertStreamToString(result.getEntity().getContent()));
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
	public String createMPIWGCollection(String title, String creator,String description,String parentID) throws Exception{
					
		// get a PID for the Collection
		
		String pid = getID();
		eSciDocXmlObject obj = new eSciDocXmlObject("mpiwg:"+pid,"MPIWGContainerTemplate.xml");

		HashMap<String,String> dcs = new HashMap<String,String>(); // Store for the metadata
			
			//Verbinde dich mit der Collection Ÿber XML-rpc
			
		
		dcs.put("description", description);
		dcs.put("title", title);
		dcs.put("creator", creator);
		obj.insertDC(dcs);
		//obj.setRelationship("info:fedora/echo:col1");
		String xml = obj.printXML();
		//System.out.println(xml);
		String ret = ingest("/ir/container",xml);
		String contid =EScidocBasicHandler.getId(ret);
		
		if (parentID!=null)
			addToCollection(parentID,contid);
			
		
		return contid;

		}

	public String createContentModell() throws ClientProtocolException, IOException{
		File cmf = new File("MPWGContentModelTemplate.xml");
		FileInputStream stream = new FileInputStream(cmf);
		
		HttpResponse ret = getEsciDocHandler().eScidocPost("/cmm/content-model", stream);
		
		String retString = EScidocBasicHandler.convertStreamToString(ret.getEntity().getContent());
		return EScidocBasicHandler.getId(retString);
	
		
	}
	
	public HttpResponse submitAnObject(String href,String comment) throws ClientProtocolException, IOException{
		HttpResponse ret = getEsciDocHandler().eScidocGet(href);
		String retTxt = EScidocBasicHandler.convertStreamToString(ret.getEntity().getContent());
		String dateStamp = EScidocBasicHandler.getDateStamp(retTxt);
		
		String param = "<param last-modification-date=\""+dateStamp+"\">";
		param+="<comment>"+comment+"</comment>";
		param+="</param>";
		
		String command=href+"/submit";
		HttpResponse result = getEsciDocHandler().eScidocPost(command, EScidocBasicHandler.convertStringToStream(param));
		
		return result;
	
		
	}
	public HttpResponse addVersionPid(String href) throws ClientProtocolException, IOException, JDOMException{
		HttpResponse ret = getEsciDocHandler().eScidocGet(href);
		String retTxt = EScidocBasicHandler.convertStreamToString(ret.getEntity().getContent());
		
		String dateStamp = EScidocBasicHandler.getDateStamp(retTxt);
		
		
		String pid=EScidocBasicHandler.getPID(retTxt);
		String versionNumber = EScidocBasicHandler.getLastVersionNumber(retTxt);
		
		String vpid=pid+":"+versionNumber;
		
		String param = "<param last-modification-date=\""+dateStamp+"\">";
		param+="<pid>"+vpid+"</pid>";
		param+="</param>";
		String command=href+"/assign-version-pid";
		
		HttpResponse result = getEsciDocHandler().eScidocPost(command, EScidocBasicHandler.convertStringToStream(param));
		
		return result;
	
		
	}
	
	public HttpResponse releaseAnObject(String href,String comment) throws ClientProtocolException, IOException{
		HttpResponse ret = getEsciDocHandler().eScidocGet(href);
		String retTxt = EScidocBasicHandler.convertStreamToString(ret.getEntity().getContent());
		String dateStamp = EScidocBasicHandler.getDateStamp(retTxt);
		
		String param = "<param last-modification-date=\""+dateStamp+"\">";
		param+="<comment>"+comment+"</comment>";
		param+="</param>";
		
		String command=href+"/release";
		HttpResponse result = getEsciDocHandler().eScidocPost(command, EScidocBasicHandler.convertStringToStream(param));
		
		return result;
	
		
	}
	public HttpResponse withdrawAnObject(String href, String comment) throws ClientProtocolException, IOException{
		HttpResponse ret = getEsciDocHandler().eScidocGet(href);
		String retTxt = EScidocBasicHandler.convertStreamToString(ret.getEntity().getContent());
		String dateStamp = EScidocBasicHandler.getDateStamp(retTxt);
		
		String param = "<param last-modification-date=\""+dateStamp+"\">";
		param+="<comment>"+comment+"</comment>";
		param+="</param>";
		
		String command=href+"/withdraw";
		HttpResponse result = getEsciDocHandler().eScidocPost(command, EScidocBasicHandler.convertStringToStream(param));
		
		return result;
	}
	public HttpResponse reviseAnObject(String href, String comment) throws ClientProtocolException, IOException{
		HttpResponse ret = getEsciDocHandler().eScidocGet(href);
		String retTxt = EScidocBasicHandler.convertStreamToString(ret.getEntity().getContent());
		String dateStamp = EScidocBasicHandler.getDateStamp(retTxt);
		
		String param = "<param last-modification-date=\""+dateStamp+"\">";
		param+="<comment>"+comment+"</comment>";
		param+="</param>";
		
		String command=href+"/revise";
		HttpResponse result = getEsciDocHandler().eScidocPost(command, EScidocBasicHandler.convertStringToStream(param));
		
		return result;
		
	}
	public String resubmitAnObject(String href, String comment) throws ClientProtocolException, IOException, ServiceException {
		HttpResponse ret = getEsciDocHandler().eScidocGet(href);
		String retTxt = EScidocBasicHandler.convertStreamToString(ret.getEntity().getContent());
		System.out.println(retTxt);
		retTxt=ingest("/ir/item", retTxt);
		System.out.println(retTxt);
		return retTxt;
		
	}
	
	
	}