package cgeo.geocaching.maps.google;

import cgeo.geocaching.cgSettings;
import cgeo.geocaching.maps.PositionOverlay;
import cgeo.geocaching.maps.CachesOverlay;
import cgeo.geocaching.maps.ScaleOverlay;
import cgeo.geocaching.maps.OtherCachersOverlay;
import cgeo.geocaching.maps.interfaces.GeoPointImpl;
import cgeo.geocaching.maps.interfaces.MapControllerImpl;
import cgeo.geocaching.maps.interfaces.MapProjectionImpl;
import cgeo.geocaching.maps.interfaces.MapViewImpl;
import cgeo.geocaching.maps.interfaces.OnDragListener;
import cgeo.geocaching.maps.interfaces.GeneralOverlay;
import cgeo.geocaching.maps.interfaces.OverlayImpl;
import cgeo.geocaching.maps.interfaces.OverlayImpl.overlayType;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;

import android.app.Activity;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;

public class GoogleMapView extends MapView implements MapViewImpl {
    private GestureDetector gestureDetector;
    private OnDragListener onDragListener;

    public GoogleMapView(Context context, AttributeSet attrs) {
        super(context, attrs);
        gestureDetector = new GestureDetector(context, new GestureListener());
    }

    public GoogleMapView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        gestureDetector = new GestureDetector(context, new GestureListener());
    }

    public GoogleMapView(Context context, String apiKey) {
        super(context, apiKey);
        gestureDetector = new GestureDetector(context, new GestureListener());
    }

    @Override
    public void draw(Canvas canvas) {
        try {
            if (getMapZoomLevel() >= 22) { // to avoid too close zoom level (mostly on Samsung Galaxy S series)
                getController().setZoom(22);
            }

            super.draw(canvas);
        } catch (Exception e) {
            Log.e(cgSettings.tag, "cgMapView.draw: " + e.toString());
        }
    }

    @Override
    public void displayZoomControls(boolean takeFocus) {
        try {
            super.displayZoomControls(takeFocus);
        } catch (Exception e) {
            Log.e(cgSettings.tag, "cgMapView.displayZoomControls: " + e.toString());
        }
    }

    @Override
    public MapControllerImpl getMapController() {
        return new GoogleMapController(getController());
    }

    @Override
    public GeoPointImpl getMapViewCenter() {
        GeoPoint point = getMapCenter();
        return new GoogleGeoPoint(point.getLatitudeE6(), point.getLongitudeE6());
    }

    @Override
    public void addOverlay(OverlayImpl ovl) {
        getOverlays().add((Overlay) ovl);
    }

    @Override
    public void clearOverlays() {
        getOverlays().clear();
    }

    @Override
    public MapProjectionImpl getMapProjection() {
        return new GoogleMapProjection(getProjection());
    }

    @Override
    public CachesOverlay createAddMapOverlay(cgSettings settings,
            Context context, Drawable drawable, boolean fromDetailIntent) {

        GoogleCacheOverlay ovl = new GoogleCacheOverlay(settings, context, drawable, fromDetailIntent);
        getOverlays().add(ovl);
        return ovl.getBase();
    }

    @Override
    public OtherCachersOverlay createAddUsersOverlay(Context context, Drawable markerIn) {
        GoogleOtherCachersOverlay ovl = new GoogleOtherCachersOverlay(context, markerIn);
        getOverlays().add(ovl);
        return ovl.getBase();
    }

    @Override
    public PositionOverlay createAddPositionOverlay(Activity activity,
            cgSettings settingsIn) {

        GoogleOverlay ovl = new GoogleOverlay(activity, settingsIn, overlayType.PositionOverlay);
        getOverlays().add(ovl);
        return (PositionOverlay) ovl.getBase();
    }

    @Override
    public ScaleOverlay createAddScaleOverlay(Activity activity,
            cgSettings settingsIn) {

        GoogleOverlay ovl = new GoogleOverlay(activity, settingsIn, overlayType.ScaleOverlay);
        getOverlays().add(ovl);
        return (ScaleOverlay) ovl.getBase();
    }

    @Override
    public int getMapZoomLevel() {
        return getZoomLevel();
    }

    @Override
    public void setMapSource(cgSettings settings) {

        switch (settings.mapSource) {
            case googleSat:
                setSatellite(true);
                break;
            default:
                setSatellite(false);
        }
    }

    @Override
    public boolean needsScaleOverlay() {
        return true;
    }

    @Override
    public void setBuiltinScale(boolean b) {
        //Nothing to do for google maps...
    }

    @Override
    public void repaintRequired(GeneralOverlay overlay) {
        invalidate();
    }

    @Override
    public void setOnDragListener(OnDragListener onDragListener) {
        this.onDragListener = onDragListener;
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        gestureDetector.onTouchEvent(ev);
        return super.onTouchEvent(ev);
    }

    private class GestureListener extends SimpleOnGestureListener {
        @Override
        public boolean onDoubleTap(MotionEvent e) {
            getController().zoomInFixing((int) e.getX(), (int) e.getY());
            if (onDragListener != null) {
                onDragListener.onDrag();
            }
            return true;
        }

        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2,
                float distanceX, float distanceY) {
            if (onDragListener != null) {
                onDragListener.onDrag();
            }
            return super.onScroll(e1, e2, distanceX, distanceY);
        }
    }
}