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/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2011-2016 Incapture Technologies LLC
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package reflex.node;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.apache.commons.io.IOUtils;
import org.apache.log4j.Logger;

import rapture.common.RaptureURI;
import rapture.common.Scheme;
import rapture.common.exception.RaptureException;
import reflex.IReflexHandler;
import reflex.ReflexException;
import reflex.Scope;
import reflex.debug.IReflexDebugger;
import reflex.value.ReflexByteArrayValue;
import reflex.value.ReflexStreamValue;
import reflex.value.ReflexValue;
import reflex.value.internal.ReflexVoidValue;

import com.google.common.net.MediaType;

public class PushNode extends BaseNode {
    private ReflexNode toSaveNode;
    private ReflexNode location;

    private static Logger logger = Logger.getLogger(PushNode.class);
    
    public PushNode(int lineNumber, IReflexHandler handler, Scope s, ReflexNode value, ReflexNode location) {
        super(lineNumber, handler, s);
        this.toSaveNode = value;
        this.location = location;
    }

    @Override
    public ReflexValue evaluate(IReflexDebugger debugger, Scope scope) {
        debugger.stepStart(this, scope);
        // In this particular case, we get the ReflexValue to save from the
        // scope
        ReflexValue toSave = toSaveNode.evaluate(debugger, scope);
        ReflexValue value = location.evaluate(debugger, scope);

        if (toSave.isList() && value.isList()) {
            // Multiple save
            List toSaveList = toSave.asList();
            List locationList = value.asList();
            if (toSaveList.size() != locationList.size()) {
                throw new ReflexException(lineNumber, "Size mismatch in array push");
            }
            List displayNames = new ArrayList();
            if (toSaveList.get(0).isMap()) {
                List> datas = new ArrayList>();
                for (int i = 0; i < toSaveList.size(); i++) {
                    ReflexValue save = toSaveList.get(i);
                    ReflexValue loc = locationList.get(i);
                    displayNames.add(loc.toString());
                    datas.add(save.asMap());
                }
                handler.getDataHandler().batchPushData(displayNames, datas);
            } else {
                List datas = new ArrayList();
                for (int i = 0; i < toSaveList.size(); i++) {
                    ReflexValue save = toSaveList.get(i);
                    ReflexValue loc = locationList.get(i);
                    displayNames.add(loc.toString());
                    datas.add(save.toString());
                }
                handler.getDataHandler().batchPushRawData(displayNames, datas);
            }
        } else if (value.isFile()) {
            // Push the data to a file
            handler.getIOHandler().writeFile(value.asFile(), toSave.asObject().toString());
        } else if (value.isArchive()) {
            handler.getIOHandler().writeArchiveEntry(value.asArchive(), toSave);
        } else {            
            RaptureURI ruri = new RaptureURI(value.toString(), Scheme.DOCUMENT);
            MediaType metadata = null;
            if (toSave.isStreamBased()) {
                // For stream based data source read the contents before pushing
                // Do it here because the DataHandler doesn't have/need the IOHandler
                // For Blob we could do it at the lower level since we push raw bytes
                
                ReflexStreamValue stream = toSave.asStream();
                if (ruri.getScheme() == Scheme.BLOB) {
                    try {
                        byte[] byteArray = IOUtils.toByteArray(stream.getInputStream());
                        toSave = new ReflexValue(new ReflexByteArrayValue(byteArray));
                        metadata = stream.getFileType();
                    } catch (IOException e) {
                        logger.warn("Cannot read "+stream, e);
                    }
                } else {
                    toSave = stream.getFileReadAdapter().readContent(stream, handler.getIOHandler());
                }
            }

            try {
                handler.getDataHandler().pushData(ruri, toSave, metadata);
            } catch (ReflexException e) {
                e.setLineNumber(getLineNumber());
                throw e;
            }
            try {
                String comment = this.getScope().getAndUsePendingComment();
                writeAudit(debugger, (comment == null ? "Wrote document" : comment) + " " + value.toString());
            } catch (RaptureException e) {
                logger.info("Unable to write to audit log - check entitlements", e);
            }
        }
        debugger.stepEnd(this, new ReflexVoidValue(lineNumber), scope);
        return new ReflexVoidValue(lineNumber);
    }

}