package com.publiccms.views.directive.tools;

import java.io.IOException;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.annotation.Resource;
import org.springframework.stereotype.Component;

import com.publiccms.common.base.AbstractTemplateDirective;
import com.publiccms.common.handler.RenderHandler;
import com.publiccms.common.tools.CmsFileUtils;
import com.publiccms.common.tools.CommonUtils;
import com.publiccms.entities.sys.SysSite;
import com.publiccms.logic.component.template.DiyComponent;
import com.publiccms.logic.component.template.TemplateComponent;
import com.publiccms.views.pojo.diy.CmsLayout;
import com.publiccms.views.pojo.diy.CmsLayoutData;
import com.publiccms.views.pojo.diy.CmsModuleData;
import com.publiccms.views.pojo.diy.CmsRegionData;

import freemarker.template.TemplateException;

/**
 * templatePlaceList 模板文件页面片段列表获取指令
 * <p>参数列表
 * <ul>
 * <li><code>path</code>:文件路径
 * </ul>
 * <p>返回结果
 * <ul>
 * <li><code>list</code>:文件路径列表
 * </ul>
 * <p>使用示例
 * <p>
 * &lt;@tools.templatePlaceList path='index.html'&gt;&lt;#list list as
 * a&gt;${a}&lt;#sep&gt;,&lt;/#list&gt;&lt;/@tools.templatePlaceList&gt;
 *
 * <pre>
&lt;script&gt;
 $.getJSON('${site.dynamicPath}api/directive/tools/templatePlaceList?path=index.html&amp;appToken=接口访问授权Token', function(data){
   console.log(data);
 });
 &lt;/script&gt;
 * </pre>
 *
 */
@Component
public class TemplatePlaceListDirective extends AbstractTemplateDirective {
    public static final Pattern PLACE_PATTERN = Pattern
            .compile("<@[_a-z\\.]*includePlace[ ]+path=[\"|\']([^\"\']*)[\"|\'][ ]*/>");

    @Override
    public void execute(RenderHandler handler) throws IOException, TemplateException {
        String path = handler.getString("path");
        Set<String> placeSet = new LinkedHashSet<>();
        Set<String> regionList = new LinkedHashSet<>();
        if (CommonUtils.notEmpty(path)) {
            SysSite site = getSite(handler);
            String fileContent = CmsFileUtils.getFileContent(siteComponent.getTemplateFilePath(site.getId(), path));
            if (CommonUtils.notEmpty(fileContent)) {
                Matcher matcher = PLACE_PATTERN.matcher(fileContent);
                while (matcher.find()) {
                    placeSet.add(matcher.group(1));
                }
                Matcher regionMatcher = TemplateRegionListDirective.REGION_PATTERN.matcher(fileContent);
                while (regionMatcher.find()) {
                    regionList.add(regionMatcher.group(1));
                }
                Set<String> placeSet2 = new HashSet<>();
                for (String place : placeSet) {
                    String placeContent = CmsFileUtils.getFileContent(siteComponent.getTemplateFilePath(site.getId(),
                            CommonUtils.joinString(TemplateComponent.INCLUDE_DIRECTORY, place)));
                    if (CommonUtils.notEmpty(placeContent)) {
                        Matcher placeMatcher = PLACE_PATTERN.matcher(placeContent);
                        while (placeMatcher.find()) {
                            placeSet2.add(placeMatcher.group(1));
                        }
                        regionMatcher = TemplateRegionListDirective.REGION_PATTERN.matcher(placeContent);
                        while (regionMatcher.find()) {
                            String id = regionMatcher.group(1);
                            regionList.add(id);
                        }
                    }
                }
                placeSet.addAll(placeSet2);
                for (String id : regionList) {
                    addPlaceInRegion(site, id, placeSet);
                }
            }
        }
        handler.put("list", placeSet).render();
    }

    private void addPlaceInRegion(SysSite site, String id, Set<String> placeSet) {
        CmsRegionData regionData = diyComponent.getRegionData(site, id);
        if (null != regionData && null != regionData.getLayoutList()) {
            for (CmsLayoutData layoutData : regionData.getLayoutList()) {
                CmsLayout layout = diyComponent.getLayout(site, layoutData.getId());
                if (null != layout) {
                    String template = layout.getTemplate();
                    Matcher matcher = CmsLayout.PLACE_PATTERN.matcher(template);
                    List<List<CmsModuleData>> moduleListList = layoutData.getModuleList();
                    if (null != moduleListList) {
                        for (int i = 0; matcher.find() && moduleListList.size() > i; i++) {
                            List<CmsModuleData> moduleList = moduleListList.get(i);
                            if (null != moduleList) {
                                for (CmsModuleData moduleData : moduleList) {
                                    placeSet.add(moduleData.getPlace());
                                }
                            }
                        }
                    }
                }
            }
        }
    }

    @Override
    public boolean needAppToken() {
        return true;
    }

    @Resource
    private DiyComponent diyComponent;
}