/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.ureport.chart.dataset.impl.category;

import com.bstek.ureport.build.Context;
import com.bstek.ureport.model.Cell;

import java.util.List;
import java.util.Map;

/**
 * @author Jacky.gao
 * @since 2017年6月8日
 */
public class PolarDataset extends CategoryDataset {
    @Override
    public String buildDataJson(Context context, Cell cell) {
        String datasetJson = buildDatasetJson(context, cell, null);
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        String labels = getLabels();
        sb.append("\"labels\":").append(labels).append(",");
        sb.append("\"datasets\":[").append(datasetJson).append("]");
        sb.append("}");
        return sb.toString();
    }

    @Override
    protected String buildDatasets(Map<Object, Map<Object, List<Object>>> map, String props) {
        StringBuilder sb = new StringBuilder();
        int i = 0;
        for (Object series : map.keySet()) {
            if (i > 0) {
                sb.append(",");
            }
            sb.append("{");
            sb.append("\"label\":\"").append(series).append("\",");
            Map<Object, List<Object>> categoryMap = map.get(series);
            sb.append("\"backgroundColor\":").append(buildBackgroundColor(i, categoryMap.size())).append(",");
            sb.append("\"data\":").append(buildData(categoryMap));
            if (props != null) {
                sb.append(",").append(props);
            }
            sb.append("}");
            i++;
        }
        return sb.toString();
    }

    private String buildBackgroundColor(int start, int size) {
        StringBuilder sb = new StringBuilder();
        sb.append("[");
        for (int i = start; i < size; i++) {
            String color = getRgbColor(i);
            if (sb.length() > 1) {
                sb.append(",");
            }
            sb.append("\"rgb(").append(color).append(")\"");
        }
        sb.append("]");
        return sb.toString();
    }

    @Override
    public String getType() {
        return "polarArea";
    }
}
