/**
 * Created by mm28969 on 11/8/16.
 * Modified by mm17060 6/13/17.
 */

import * as d3 from "d3";

import {Theme, convertValueToAttribute} from "../mmviz-common/index";

import {createDatumLayout, createViewModel, Layout} from "./layout";
import {LayoutScale} from "./scale";
import {ScaleTypeEnum} from "./scale_container";

export function areaLayoutCreator(colorScaleKey = "color") {

    // layout extender
    return function(dataModel, layoutScale: LayoutScale) {

        let xDomain = d3.extent(dataModel.dataArray, dataModel.xValueMap),
            yDomain = d3.extent(dataModel.dataArray, dataModel.yValueMap),
            theme: Theme = Theme.getInstance();

        layoutScale.extendDomainX(xDomain).extendDomainY(yDomain);

        // layouter
        return function(){

            let x, y, d, dLayout, color, y0, width,
                dModel, dModelMap: any = {}, scaleContainer,
                viewModel: any = createViewModel(),
                theme: Theme = Theme.getInstance();

            y0 = layoutScale.yScale(layoutScale.yDomain[0]);

            for (d of dataModel.dataArray) {

                dLayout = createDatumLayout(dataModel, d);

                x = dataModel.xValueMap(d);
                y = dataModel.yValueMap(d);

                dLayout.valueX = x;
                dLayout.valueY = y;

                dLayout.x = layoutScale.xScale(x);

                scaleContainer = layoutScale.getScaleContainer("x");
                if(scaleContainer.type === ScaleTypeEnum.BAND){
                    width = layoutScale.xScale.bandwidth();
                    dLayout.x = dLayout.x + (width * 0.5);
                }

                dLayout.y = layoutScale.yScale(y);
                dLayout.y0 = y0;

                color = layoutScale.mapValue(colorScaleKey, dataModel, d);

                dModel = dModelMap[color.key];
                if (!dModel) {
                    dModel = {
                        key: color.key,
                        category: color.key,
                        categoryAttr: "category-" + convertValueToAttribute(color.key),
                        color: color,
                        dataArray: []
                    };
                    dModelMap[color.key] = dModel;
                    viewModel.dataArray.push(dModel);
                }

                if(dataModel.detailsMap){
                    dLayout.details = dataModel.detailsMap(d);
                }

                dModel.dataArray.push(dLayout);
            }

            return viewModel;
        }
    }
}