content: /*******************************************************************************
   * 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;
  
  import com.bstek.ureport.build.Context;
  import com.bstek.ureport.chart.axes.impl.XAxes;
  import com.bstek.ureport.chart.axes.impl.YAxes;
  import com.bstek.ureport.chart.dataset.Dataset;
  import com.bstek.ureport.chart.dataset.impl.BubbleDataset;
  import com.bstek.ureport.chart.dataset.impl.ScatterDataset;
  import com.bstek.ureport.chart.dataset.impl.category.BarDataset;
  import com.bstek.ureport.chart.dataset.impl.category.LineDataset;
  import com.bstek.ureport.chart.option.Option;
  import com.bstek.ureport.chart.plugins.Plugin;
  import com.bstek.ureport.model.Cell;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * @author
   * @since 6月8日
   */
  public class Chart {
  	private Dataset dataset;
  	private XAxes xaxes;
  	private YAxes yaxes;
  	private List<Option> options=new ArrayList<Option>();
  	private List<Plugin> plugins=new ArrayList<Plugin>();
  	public ChartData doCompute(Cell cell, Context context){
  		StringBuilder sb=new StringBuilder();
  		sb.append("{");
  		sb.append("\"type\":\""+dataset.getType()+"\",");
  		sb.append("\"data\":"+dataset.buildDataJson(context, cell)+",");
  		sb.append("\"options\":{");
  		boolean withoption=false;
  		if(options!=null && options.size()>0){
  			for(int i=0;i<options.size();i++){
  				Option option=options.get(i);
  				if(i>0){
  					sb.append(",");
  				}
  				sb.append(option.buildOptionJson());
  				withoption=true;
  			}
  		}
  		if(plugins!=null && plugins.size()>0) {
  			if(withoption){
  				sb.append(",");
  			}
  			withoption=true;
  			sb.append("\"plugins\": {");
  			for(Plugin plugin:plugins) {
  				String pluginJson=plugin.toJson(dataset.getType());
  				if(pluginJson!=null) {
  					sb.append(pluginJson);
  				}
  			}
  			sb.append("}");
  		}else {
  			withoption=true;
  			sb.append("\"plugins\": {");
  			sb.append("\"datalabels\":{\"display\":false}");
  			sb.append("}");
  		}
  		if(xaxes!=null || yaxes!=null){
  			if(withoption){
  				sb.append(",");
  			}
  			withoption=true;
  			sb.append("\"scales\":{");
  			if(xaxes!=null){
  				sb.append("\"xAxes\":[");
  				sb.append(xaxes.toJson());
  				sb.append("]");
  			}
  			if(yaxes!=null){
  				if(xaxes!=null){
  					sb.append(",\"yAxes\":[");
  				}else{
  					sb.append("\"yAxes\":[");
  				}
  				sb.append(yaxes.toJson());
  				sb.append("]");
  			}else{
  				if(hasYAxes(dataset)){
  					sb.append(",\"yAxes\":[{\"ticks\":{\"min\":0}}]");
  				}
  			}
  			sb.append("}");
  		}else{
  			if(withoption && hasYAxes(dataset)){
  				sb.append(",");
  				sb.append("\"scales\":{\"yAxes\":[]}");
  			}
  		}
  		sb.append("}");
  		sb.append("}");
  		ChartData chartData=new ChartData(sb.toString(),cell);
  		context.addChartData(chartData);
  		return chartData;
  	}
  
  	private boolean hasYAxes(Dataset dataset){
  		if(dataset instanceof BarDataset){
  			return true;
  		}
  		if(dataset instanceof LineDataset){
  			return true;
  		}
  		if(dataset instanceof BubbleDataset){
  			return true;
  		}
  		if(dataset instanceof ScatterDataset){
  			return true;
  		}
  		return false;
  	}
  
  	public List<Option> getOptions() {
  		return options;
  	}
  
  	public void setOptions(List<Option> options) {
  		this.options = options;
  	}
  
  	public List<Plugin> getPlugins() {
  		return plugins;
  	}
  
  	public void setPlugins(List<Plugin> plugins) {
  		this.plugins = plugins;
  	}
  
  	public Dataset getDataset() {
  		return dataset;
  	}
  	public void setDataset(Dataset dataset) {
  		this.dataset = dataset;
  	}
  
  	public XAxes getXaxes() {
  		return xaxes;
  	}
  
  	public void setXaxes(XAxes xaxes) {
  		this.xaxes = xaxes;
  	}
  
  	public YAxes getYaxes() {
  		return yaxes;
  	}
  
  	public void setYaxes(YAxes yaxes) {
  		this.yaxes = yaxes;
  	}
  }
  