package org.simantics.plant3d.scenegraph;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.simantics.g3d.math.MathTools;
import org.simantics.g3d.property.annotations.GetPropertyValue;
import org.simantics.g3d.property.annotations.PropertyTabBlacklist;
import org.simantics.g3d.property.annotations.SetPropertyValue;
import org.simantics.g3d.scenegraph.IG3DNode;
import org.simantics.g3d.vtk.common.VtkView;
import org.simantics.objmap.graph.annotations.GraphType;
import org.simantics.objmap.graph.annotations.RelatedElementsAdd;
import org.simantics.objmap.graph.annotations.RelatedElementsGet;
import org.simantics.objmap.graph.annotations.RelatedElementsRem;
import org.simantics.objmap.graph.annotations.RelatedGetValue;
import org.simantics.objmap.graph.annotations.RelatedSetValue;
import org.simantics.plant3d.ontology.Plant3D;
import org.simantics.plant3d.scenegraph.controlpoint.PipeControlPoint;

import vtk.vtkProp3D;
import vtk.vtkRenderer;

@GraphType(Plant3D.URIs.PipeRun)
@PropertyTabBlacklist("Transform")
public class PipeRun extends P3DParentNode<IP3DNode> {
	
	private double pipeDiameter = 0.1;
	private double pipeThickness = 0.0;
	private double[] turnRadius = new double[] {0.2};
	
	@Override
	public void update(vtkRenderer ren) {
		
	}
	
	@Override
	public void visualize(VtkView panel) {
		
	}
	
	@Override
	public Collection<vtkProp3D> getActors() {
		return Collections.emptyList();
	}
	
	@Override
	public void stopVisualize() {
		
	}
	
	@SuppressWarnings("deprecation")
	@RelatedGetValue(Plant3D.URIs.HasTurnRadius)
	@GetPropertyValue(value=Plant3D.URIs.HasTurnRadius, name = "Elbow radius")
	public double getTurnRadius() {
		return turnRadius[0];
	}
	
	@SuppressWarnings("deprecation")
	@RelatedSetValue(Plant3D.URIs.HasTurnRadius)
	@SetPropertyValue(Plant3D.URIs.HasTurnRadius)
	public void setTurnRadius(double turnRadius) {
		if (this.turnRadius[0] == turnRadius)
			return;
		this.turnRadius[0] = turnRadius;
		firePropertyChanged(Plant3D.URIs.HasTurnRadius);
		firePropertyChanged(Plant3D.URIs.HasTurnRadiusArray);
	}
	
	@RelatedGetValue(Plant3D.URIs.HasTurnRadiusArray)
    @GetPropertyValue(value=Plant3D.URIs.HasTurnRadiusArray, name = "Elbow radius array")
    public double[] getTurnRadiusArray() {
        return turnRadius;
    }
    
    @RelatedSetValue(Plant3D.URIs.HasTurnRadiusArray)
    @SetPropertyValue(Plant3D.URIs.HasTurnRadiusArray)
    public void setTurnRadiusArray(double[] turnRadiusArray) {
        if (turnRadiusArray == null || turnRadiusArray.length == 0 || Arrays.equals(this.turnRadius, turnRadiusArray))
            return;
        this.turnRadius = turnRadiusArray;
        firePropertyChanged(Plant3D.URIs.HasTurnRadiusArray);
    }
	
	@RelatedGetValue(Plant3D.URIs.HasPipeDiameter)
	@GetPropertyValue(value=Plant3D.URIs.HasPipeDiameter, name = "Diameter")
	public double getPipeDiameter() {
		return pipeDiameter;
	}
	
	@RelatedSetValue(Plant3D.URIs.HasPipeDiameter)
	@SetPropertyValue(Plant3D.URIs.HasPipeDiameter)
	public void setPipeDiameter(double pipeDiameter) {
		if (this.pipeDiameter == pipeDiameter)
			return;
		
		this.pipeDiameter = pipeDiameter;
		firePropertyChanged(Plant3D.URIs.HasPipeDiameter);
	}
	
	@RelatedGetValue(Plant3D.URIs.HasPipeThickness)
	@GetPropertyValue(value=Plant3D.URIs.HasPipeThickness, name = "Wall Thickness")
	public double getPipeThickness() {
		return pipeThickness;
	}
	
	@RelatedSetValue(Plant3D.URIs.HasPipeThickness)
	@SetPropertyValue(Plant3D.URIs.HasPipeThickness)
	public void setPipeThickness(double pipeThickness) {
		if (this.pipeThickness == pipeThickness)
			return;
		
		this.pipeThickness = pipeThickness;
		firePropertyChanged(Plant3D.URIs.HasPipeThickness);
	}
	
	public double getInsideDiameter() {
		return pipeDiameter - 2 * pipeThickness;
	}
	
	@RelatedElementsAdd(Plant3D.URIs.children)
	public void addChild(PipelineComponent node) {
		addNode(Plant3D.URIs.children,node);
	}
	
	@RelatedElementsGet(Plant3D.URIs.children)
	public Collection<PipelineComponent> getChild() {
		Collection<PipelineComponent> coll = new ArrayList<PipelineComponent>();
		for (IG3DNode n : getNodes(Plant3D.URIs.children)) {
			coll.add((PipelineComponent)n);
		}
		return coll;
	}
	
	@RelatedElementsRem(Plant3D.URIs.children)
	public void _remChild(PipelineComponent node) {
		//since we do not now, if DB remove is actually remove or detach, we have to use detach. NodeMap will handle Component removals.
	    deattachNode(Plant3D.URIs.children, node);
	}
	
	public void remChild(PipelineComponent node) {
	    removeNode(Plant3D.URIs.children, node);
	}
	
	@Override
	public void remove() {
	    // since we do not now, if DB remove is actually remove or detach, we have to use detach. NodeMap will handle Component removals.
	    Collection<PipelineComponent> comps = getChild();
	    for (PipelineComponent c : comps)
	        c.deattach();
	    super.remove();
	}

	
	public List<PipelineComponent> getSortedChild() {
		List<PipelineComponent> coll = new ArrayList<PipelineComponent>();
		for (IG3DNode n : getNodes(Plant3D.URIs.children)) {
			coll.add((PipelineComponent)n);
		}
		Collections.sort(coll, new ComponentComparator());
		return coll;
	}
	private static String PIPECP = "pipecp";
	
	public void addChild(PipeControlPoint node) {
		addNode(PIPECP,node);
	}
	
	public void remChild(PipeControlPoint node) {
		removeNode(PIPECP, node);
	}
	
	public void deattachChild(PipeControlPoint node) {
		deattachNode(PIPECP, node);
	}
	
	public Collection<PipeControlPoint> getControlPoints() {
		Collection<PipeControlPoint> coll = new ArrayList<PipeControlPoint>();
		for (IG3DNode n : getNodes(PIPECP)) {
			coll.add((PipeControlPoint)n);
		}
		return coll;
	}
	
	
	public boolean equalSpecs(PipeRun other) {
		if (!MathTools.equals(pipeDiameter,other.pipeDiameter))
			return false;
		if (turnRadius.length != other.turnRadius.length)
		    return false;
		for (int i = 0; i < turnRadius.length; i++) {
		    if (!MathTools.equals(turnRadius[i],other.turnRadius[i]))
		        return false;
		}
		return true;
	}
	
	public boolean canMerge(PipeRun other) {
	    return MathTools.equals(pipeDiameter,other.pipeDiameter);
	}
	
	/**
	 * Merges contents of PipeRun r2 to this PipeRun. Note: does not connect boundary components!
	 * @param r2
	 */
	public void merge(PipeRun r2) {
        Map<Integer, Integer> turnIndexMap = null;
        if (!this.equalSpecs(r2)) {
            if (!this.canMerge(r2))
                throw new IllegalArgumentException("PipeRuns cannot be merged");
            // Merge turn radii.
            turnIndexMap = new HashMap<>();
            List<Double> mergedTurnRadius = new ArrayList<>();
            for (double t : this.getTurnRadiusArray()) {
                mergedTurnRadius.add(t);
            }
            for (int i2 = 0; i2 < r2.getTurnRadiusArray().length; i2++) {
                double t2 = r2.getTurnRadiusArray()[i2];
                boolean found = false;
                for (int i = 0; i < mergedTurnRadius.size(); i++) {
                    if (MathTools.equals(mergedTurnRadius.get(i), t2)) {
                        turnIndexMap.put(i2, i);
                        found = true;
                        break;
                    }
                }
                if (!found) {
                    turnIndexMap.put(i2, mergedTurnRadius.size());
                    mergedTurnRadius.add(t2);
                }
            }
            for (PipeControlPoint pcp : r2.getControlPoints()) {
                PipelineComponent comp = pcp.getPipelineComponent();
                if (comp instanceof TurnComponent) {
                    
                }
            }
            if (mergedTurnRadius.size() > this.getTurnRadiusArray().length) {
                double arr[] = new double[mergedTurnRadius.size()];
                for (int i = 0; i < mergedTurnRadius.size(); i++) {
                    arr[i] = mergedTurnRadius.get(i);
                }
                this.setTurnRadiusArray(arr);
            }
        }
        // Move components and control points
        Collection<PipeControlPoint> pcps = r2.getControlPoints();
        for (PipeControlPoint pcp : pcps) {
            r2.deattachChild(pcp);
            this.addChild(pcp);
            PipelineComponent component = pcp.getPipelineComponent();
            if (component != null) {
                if (!(component instanceof Nozzle)) {
                    component.deattach();
                    this.addChild(component);
                } else {
                    Nozzle n = (Nozzle)component;
                    n.setPipeRun(this);
                }
            }
        }
        // Use new turn radii indexes 
        if (turnIndexMap != null) {
            for (PipeControlPoint pcp : pcps) {
                PipelineComponent component = pcp.getPipelineComponent();
                if (component instanceof TurnComponent) {
                    TurnComponent tc = (TurnComponent)component;
                    if (tc.getTurnRadiusIndex() == null || tc.getTurnRadiusIndex() < 0)
                        continue;
                    tc.setTurnRadiusIndex(turnIndexMap.get(tc.getTurnRadiusIndex()));
                }
            }
        }
        r2.remove();
        
    }
	
	private class ComponentComparator implements Comparator<PipelineComponent> {
		@Override
		public int compare(PipelineComponent o1, PipelineComponent o2) {
			if (o1 == o2)
				return 0;
			int i = 1;
			PipelineComponent c = o1.getPrevious();
			while (c != null) {
				if (c == o2)
					return i;
				c = c.getPrevious();
				i++;
			}
			i = -1;
			c = o1.getNext();
			while (c != null) {
				if (c == o2)
					return i;
				c = c.getNext();
				i--;
			}
			return 0;
			
		}
	}
	
}