package org.simantics.g3d.property;

import java.util.List;

import org.simantics.utils.datastructures.Arrays;

public class ComboPropertyManipulator implements PropertyManipulator{

    ComboValueProvider provider;
    Object input;
    
    boolean editMode;
    
    public ComboPropertyManipulator(ValueProvider provider, Object input) {
        this.provider = (ComboValueProvider)provider;
        this.input = input;
    }
    
    @Override
    public int getValueCount() {
        return 1;
    }
    
    @Override
    public String getDescription(int i) {
        if (i == 0)
            return "Value";
        return null;
    }
    
    @Override
    public String getValue(int i) {
        try {
            Object rawValue = provider.getValue(input);
            if (rawValue == null) {
                return null;
            }
            else if (rawValue instanceof Integer) {
                Integer value = (Integer)rawValue;
                return getItems()[value];
            }
            else if (rawValue instanceof Enum) {
                return rawValue.toString();
            }
            else {
                return null;
            }
        } catch (Exception e) {
            return null;
        }
    }
    
    @Override
    public String setValue(String value, int i) {
        try {
            int intValue = Integer.parseInt(value);
            Class<?> valueType = provider.getValueType();
            if (Enum.class.isAssignableFrom(valueType)) {
                provider.setValue(input, valueType.getEnumConstants()[intValue]);
            }
            else {
                provider.setValue(input, intValue);
            }
        } catch (Exception e) {
            return e.getMessage();
        }
        return null;
    }

    @Override
    public boolean getEditMode() {
        return editMode;
    }
    
    @Override
    public void setEditMode(boolean b) {
        editMode = b;
    }
    
    public String[] getItems() {
        try {
            List<Object> vals = provider.getValues(input);
            String arr[] = new String[vals.size()];
            for (int i = 0; i < vals.size(); i++) {
                arr[i] = vals.get(i).toString();
            }
            return arr;
        } catch (Exception e) {
            return new String[0];
        }
    }
    
    public Integer getValueIndex() {
        try {
            Object value = provider.getValue(input);
            Class<?> valueType = provider.getValueType();
            if (valueType.isEnum()) {
                return Arrays.indexOf(valueType.getEnumConstants(), value);
            }
            else {
                return (Integer) value;
            }
        } catch (Exception e) {
            return null;
        }
    }
    
    public Integer indexOf(String value) {
        String[] items = getItems();
        for (int i = 0; i < items.length; i++)
            if (items[i].equals(value))
                return i;
        return -1;
    }
}