//package de.intevation.mxd;

import java.io.IOException;

import org.apache.log4j.Logger;

import com.esri.arcgis.geodatabase.IClass;
import com.esri.arcgis.carto.ILayer;
import com.esri.arcgis.carto.IMap;
import com.esri.arcgis.carto.MapDocument;
import com.esri.arcgis.carto.FeatureLayer;
import com.esri.arcgis.carto.IFeatureRenderer;
import com.esri.arcgis.carto.SimpleRenderer;
import com.esri.arcgis.carto.ClassBreaksRenderer;
import com.esri.arcgis.carto.UniqueValueRenderer;

import com.esri.arcgis.geodatabase.IFeatureClass;
import com.esri.arcgis.geodatabase.FeatureClass;
import com.esri.arcgis.geometry.ISpatialReference;
import com.esri.arcgis.geometry.ProjectedCoordinateSystem;
import com.esri.arcgis.geometry.IProjection;
import com.esri.arcgis.geometry.Projection;

/**
 * The MXD file reader.
 *
 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
 */
public class MXDReader implements IReader {

    //Member
    private String filename = "";
    private ArcGISInitializer initializer = null;
    private IMap map;

    private static final Logger logger = Logger.getLogger(MXDReader.class);

    //Constructor
    public MXDReader() throws IOException{
        logger.debug("constructor()");
        initializer = new ArcGISInitializer();
    }


    //Methods

    /**
     * Initialize the ArcGIS Objects.
     */
    public boolean init() throws IOException{
        logger.debug("init()");
        initializer.initArcGIS();
        initializer.initArcGISLicenses();
        return true;
    }

    /**
     * Shutdown the ArcGIS Objects.
     */
    public boolean shutdown() throws IOException{
        logger.debug("shutdown()");
        if(initializer == null){
            throw new IOException("Faild to shutdown!");
        }
        else{
            initializer.shutdownArcGIS();
            return true;
        }
    }

    /**
     * Set the path and filename to the MXD-File.
     */
    public void setFilename(String name){
        logger.debug("setFilename()");
        filename = name;
    }

    /**
     * Read the MXD file content.
     */
    public boolean read() throws IOException{
        logger.debug("read()");
        if(filename == ""){
            throw new IOException("Please set filename!");
        }
        else{
            MapDocument m = new MapDocument();
            if(!m.isMapDocument(filename)){
                throw new IOException(filename + " is not a map!");
            }
            m.open(filename, null);
            map = m.getMap(0);
            MapReader mreader = new MapReader (map);
            mreader.read();
            for(int i = 0; i < map.getLayerCount();i++){
                ILayer layer = map.getLayer(0);
                ILayerReader lr = new FeatureLayerReader(layer);
                lr.read();
                if (layer instanceof FeatureLayer){
                    IFeatureRenderer renderer = ((FeatureLayer)layer).getRenderer();
                    IRendererReader rreader;
                    try{
                        if(renderer instanceof SimpleRenderer){
                            rreader = new SimpleRendererReader(renderer);
                            rreader.read();
                        }
                        else if(renderer instanceof ClassBreaksRenderer){
                            rreader = new ClassBreakRendererReader(renderer);
                            rreader.read();
                        }
                        else if(renderer instanceof UniqueValueRenderer){
                            rreader = new UniqueValueRendererReader(renderer);
                            rreader.read();
                        }
                        else{
                            System.out.println("No known renderer!");
                            System.out.println("Implement new renderer for " +
                                               renderer.getClass().toString());
                        }
                    }
                    catch(Exception e){
                        e.printStackTrace();
                    }
                }
            }
        }
        return true;
    }

    /**
     * Get the mapinformation as DOM document. TODO: implement me!
     */
    public void getMapDocument(){
        logger.debug("getMapDocument() -> not implemented jet.");
    }
}
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