package org.simantics.plant3d.scenegraph;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.vecmath.Vector3d;

import org.simantics.g3d.math.MathTools;
import org.simantics.g3d.property.annotations.GetComboProperty;
import org.simantics.g3d.property.annotations.GetComboPropertyValue;
import org.simantics.g3d.property.annotations.GetPropertyValue;
import org.simantics.g3d.property.annotations.SetComboPropertyValue;
import org.simantics.g3d.property.annotations.SetPropertyValue;
import org.simantics.g3d.scenegraph.base.ParentNode;
import org.simantics.g3d.tools.NodeTools;
import org.simantics.objmap.graph.annotations.DynamicGraphType;
import org.simantics.objmap.graph.annotations.GetType;
import org.simantics.objmap.graph.annotations.RelatedGetValue;
import org.simantics.objmap.graph.annotations.RelatedSetValue;
import org.simantics.objmap.graph.annotations.SetType;
import org.simantics.plant3d.ontology.Plant3D;
import org.simantics.plant3d.scenegraph.controlpoint.ControlPointFactory;
import org.simantics.plant3d.scenegraph.controlpoint.PipeControlPoint;
import org.simantics.plant3d.scenegraph.controlpoint.PipingRules;

@DynamicGraphType(Plant3D.URIs.TurnComponent)
public class TurnComponent extends PipelineComponent {

	
	private String type;
	private PipeControlPoint controlPoint;
	private Integer turnRadiusIndex;
	
	@GetType(Plant3D.URIs.TurnComponent)
	public String getType() {
		return type;
	}
	
	@SetType(Plant3D.URIs.TurnComponent)
	public void setType(String type) throws Exception{
		this.type = type;
		controlPoint = ControlPointFactory.create(this);
		syncNext();
        syncPrevious();
        syncBranch0();
	}
	
	@Override
	public PipeControlPoint getControlPoint() {
		return controlPoint;
	}
	
	@Override
	public void setParent(ParentNode<?> parent, String name) {
		super.setParent(parent, name);
		setPipeRun((PipeRun)parent);
	}
	
	@Override
	public Map<String, Object> updateParameterMap() {
		Map<String,Object> map = new HashMap<String, Object>();
		
		if (getPipeRun() != null) {
    		map.put("turnRadius", getTurnRadius());
    		map.put("radius", getDiameter() * 0.5);
		}
		if (controlPoint != null && controlPoint.getTurnAngle() != null  && !Double.isNaN(controlPoint.getTurnAngle())) {
			map.put("turnAngle", controlPoint.getTurnAngle());
		}
		return map;
	}
	
	public boolean isVariableAngle() {
		return !controlPoint.isFixed();
	}
	
	@Override
	public void updateParameters() {
		super.updateParameters();
		if (controlPoint.asFixedAngle()) {
			Map<String,Object> calculated = getCalculatedParameters();
			if (calculated.containsKey("length")) {
				controlPoint.setLength((Double)calculated.get("length"));
			}
			PipingRules.requestUpdate(getControlPoint());
		}
	}
	
	public Double getTurnAngle() {
	    return getControlPoint().getTurnAngle();
	}
	
	@RelatedGetValue(Plant3D.URIs.HasTurnAngle)
	public Double _getTurnAngle() {
	    if (!getControlPoint().asFixedAngle())
	        return null;
		return getControlPoint().getTurnAngle();
	}
	
	@RelatedSetValue(Plant3D.URIs.HasTurnAngle)
	public void setTurnAngle(Double a) {
		if (!getControlPoint().asFixedAngle())
			return;
		getControlPoint().setTurnAngle(a);            
	}
	
	@GetPropertyValue(name="Turn Angle", value="turn angle", tabId = "Default")
	public Double getTurnAngleDeg() {
		Double d = getControlPoint().getTurnAngle();
		if (d == null)
			return null;
		return MathTools.radToDeg(d);
	}
	
	public Vector3d getTurnAxis() {
		return getControlPoint().getTurnAxis();
	}
	
    public Double getTurnRadius() {
	    if (turnRadiusIndex != null)
	        return getPipeRun().getTurnRadiusArray()[turnRadiusIndex];
	    return getPipeRun().getTurnRadiusArray()[0];
	}
	
	@RelatedGetValue(Plant3D.URIs.HasTurnRadiusIndex)
	@GetComboPropertyValue(name="Turn Radius", value=Plant3D.URIs.HasTurnRadiusIndex, tabId = "Default")
	public Integer getTurnRadiusIndex() 
	{
        // TODO: For backwards compatibility, we do not accept null values. 
        //       One development path would allow null index, and setting custom turn radius for the component.
        if (turnRadiusIndex == null)
	        return 0;
	    return turnRadiusIndex;
	}
	
	@RelatedSetValue(Plant3D.URIs.HasTurnRadiusIndex)
	@SetComboPropertyValue(value=Plant3D.URIs.HasTurnRadiusIndex)
    public void setTurnRadiusIndex(Integer turnRadiusIndex) {
	    if (this.turnRadiusIndex == turnRadiusIndex)
	        return;
	    if (turnRadiusIndex == null)
	        return;
	    if (turnRadiusIndex != null && getPipeRun() != null) {
	        if (getPipeRun().getTurnRadiusArray().length <= turnRadiusIndex)
	            return;
	    }
	    this.turnRadiusIndex = turnRadiusIndex;
        firePropertyChanged(Plant3D.URIs.HasTurnRadiusIndex);
        PipingRules.requestUpdate(getControlPoint());
    }
	
	@GetComboProperty(value=Plant3D.URIs.HasTurnRadiusIndex)
	public List<Double> _getTurnRadii() {
	    List<Double> values = new ArrayList<Double>();
	    for (double d : getPipeRun().getTurnRadiusArray())
	        values.add(d);
	    return values;
	}
	
	
	@RelatedGetValue(Plant3D.URIs.HasRotationAngle)
	@GetPropertyValue(name="Rotation Angle", value=Plant3D.URIs.HasRotationAngle, tabId = "Default")
	public Double getRotationAngle() {
		if (!controlPoint.asFixedAngle())
			return null;
		Double d = controlPoint.getRotationAngle();
		if (d == null)
			return 0.0;
		return MathTools.radToDeg(d);
	}
	@RelatedSetValue(Plant3D.URIs.HasRotationAngle)
	@SetPropertyValue(value=Plant3D.URIs.HasRotationAngle)
	public void setRotationAngle(Double angle) {
		if (!controlPoint.asFixedAngle())
			return;
		
		if (angle == null || Double.isInfinite(angle) || Double.isNaN(angle)) {
			return;
		}
		angle = MathTools.degToRad(angle);
		if (controlPoint.getRotationAngle() != null && Math.abs(controlPoint.getRotationAngle()-angle) < MathTools.NEAR_ZERO)
			return;
		controlPoint.setRotationAngle(angle);
		PipingRules.requestUpdate(getControlPoint());
	}
	
	@RelatedGetValue(Plant3D.URIs.IsReversed)
	@GetPropertyValue(name="Reverse", value=Plant3D.URIs.IsReversed, tabId = "Default")
	public Boolean isReversed() {
		if (!controlPoint.asFixedAngle())
			return null;
		Boolean d = controlPoint._getReversed();
		return d;
	}
	@RelatedSetValue(Plant3D.URIs.IsReversed)
	public void setReversed(Boolean reverse) {
		if (!controlPoint.asFixedAngle())
			return;
		
		if (reverse == null) {
			return;
		}
		controlPoint.setReversed(reverse);
		PipingRules.requestUpdate(getControlPoint()); 
	}
	
	@Override
	protected double[] getColor() {
		if (getControlPoint() == null || !getControlPoint().isFixed())
			return new double[]{0.6,0.6,0.6};
		else
			return new double[]{1.0,0.0,0.0};
	}
	
	/**
	 * Turn is a section of a circle; this method returns center of that circle.
	 * @return
	 */
	public Vector3d getCenterPosition() {
	    // getPosition() is control point position, located outside of turn
        // we need to calculate position in the middle of the turn
        double t = Math.tan((Math.PI - getControlPoint().getTurnAngle()) * 0.5);
        double tr = getTurnRadius();
        double R = 0.0;
        if (t > MathTools.NEAR_ZERO)
            R = tr / t;
        Vector3d localC = new Vector3d(-R, 0.0, -tr);
        // worldC is center of a circle
        Vector3d worldC = NodeTools.getWorldPosition(this,localC);
        return worldC;
	}
	
	/**
	 * Returns position in the middle of turn component
	 * @return
	 */
	public Vector3d getMiddlePosition() {
	    Vector3d pos = getWorldPosition();
	    Vector3d worldC = getCenterPosition();
	    
	    // calculate vector from center to edge, which is middle of the turn
        pos.sub(worldC);
        pos.normalize();
        pos.scale(getTurnRadius());
        pos.add(worldC);
        return pos;
	}
}