// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
package com.cloud.hypervisor.vmware.mo;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.rmi.RemoteException;
import java.util.Arrays;
import java.util.List;

import org.apache.log4j.Logger;
import org.w3c.dom.Element;

import com.cloud.hypervisor.vmware.util.VmwareContext;
import com.vmware.vim25.HttpNfcLeaseInfo;
import com.vmware.vim25.HttpNfcLeaseManifestEntry;
import com.vmware.vim25.HttpNfcLeaseState;
import com.vmware.vim25.LocalizedMethodFault;
import com.vmware.vim25.ManagedObjectReference;
import com.vmware.vim25.ObjectSpec;
import com.vmware.vim25.OvfCreateImportSpecResult;
import com.vmware.vim25.OvfFileItem;
import com.vmware.vim25.PropertyFilterSpec;
import com.vmware.vim25.PropertySpec;

public class HttpNfcLeaseMO extends BaseMO {
    private static final Logger s_logger = Logger.getLogger(HttpNfcLeaseMO.class);

	public HttpNfcLeaseMO(VmwareContext context, ManagedObjectReference morHttpNfcLease) {
		super(context, morHttpNfcLease);
	}

	public HttpNfcLeaseMO(VmwareContext context, String morType, String morValue) {
		super(context, morType, morValue);
	}

	public HttpNfcLeaseState getState() throws Exception {
        Object stateProp = _context.getVimClient().getDynamicProperty(_mor, "state");
        // Due to some issue in JAX-WS De-serialization getting the information
        // from the nodes
        assert (stateProp.toString().contains("val: null"));
        String stateVal = null;
        Element stateElement = (Element) stateProp;
        if (stateElement != null && stateElement.getFirstChild() != null) {
            stateVal = stateElement.getFirstChild().getTextContent();
        }
        if (stateVal != null) {
            return HttpNfcLeaseState.fromValue(stateVal);
        }
        return HttpNfcLeaseState.ERROR;
	}

	public HttpNfcLeaseState waitState(HttpNfcLeaseState[] states) throws Exception {
		assert(states != null);
		assert(states.length > 0);

		HttpNfcLeaseState state;
		while(true) {
			state = getState();
			if(state == HttpNfcLeaseState.READY || state == HttpNfcLeaseState.ERROR)
				return state;
		}
	}



	public HttpNfcLeaseInfo getLeaseInfo() throws Exception {
		return (HttpNfcLeaseInfo)_context.getVimClient().getDynamicProperty(_mor, "info");
	}

    public LocalizedMethodFault getLeaseError() throws Exception {
        return (LocalizedMethodFault)_context.getVimClient().getDynamicProperty(_mor, "error");
    }

	public List<HttpNfcLeaseManifestEntry> getLeaseManifest() throws Exception {
		return _context.getService().httpNfcLeaseGetManifest(_mor);
	}

	public void completeLease() throws Exception {
		_context.getService().httpNfcLeaseComplete(_mor);
	}

	public void abortLease() throws Exception {
		_context.getService().httpNfcLeaseAbort(_mor, null);
	}

	public void updateLeaseProgress(int percent) throws Exception {
		// make sure percentage is in right range
		if(percent < 0)
			percent = 0;
		else if(percent > 100)
			percent = 100;

		_context.getService().httpNfcLeaseProgress(_mor, percent);
	}

	public ProgressReporter createProgressReporter() {
		return new ProgressReporter();
	}

	public static long calcTotalBytes(OvfCreateImportSpecResult ovfImportResult) {
		List<OvfFileItem> fileItemArr = ovfImportResult.getFileItem();
		long totalBytes = 0;
		if (fileItemArr != null) {
			for (OvfFileItem fi : fileItemArr) {
				totalBytes += fi.getSize();
			}
		}
		return totalBytes;
	}

	public static String readOvfContent(String ovfFilePath) throws IOException {
		StringBuffer strContent = new StringBuffer();
		BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(ovfFilePath)));
		String lineStr;
		while ((lineStr = in.readLine()) != null) {
			strContent.append(lineStr);
		}

		in.close();
		return strContent.toString();
	}

	public class ProgressReporter extends Thread {
		volatile int _percent;
		volatile boolean _done;

		public ProgressReporter() {
			_percent = 0;
			_done = false;

			setDaemon(true);
			start();
		}

		public void reportProgress(int percent) {
			_percent = percent;
		}

		public void close() {
			if(s_logger.isInfoEnabled())
				s_logger.info("close ProgressReporter, interrupt reporter runner to let it quit");

			_done = true;
			interrupt();
		}

		@Override
		public void run() {
			while(!_done) {
				try {
					Thread.sleep(1000);			// update progess every 1 second
					updateLeaseProgress(_percent);
				} catch(InterruptedException e) {
					if(s_logger.isInfoEnabled())
						s_logger.info("ProgressReporter is interrupted, quiting");
					break;
				} catch(Exception e) {
					s_logger.warn("Unexpected exception ", e);
				}
			}

			if(s_logger.isInfoEnabled())
				s_logger.info("ProgressReporter stopped");
		}
	}
}
