package com.jtgh.yjpt.controller;

import java.util.List;

import org.activiti.bpmn.converter.BpmnXMLConverter;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.editor.constants.ModelDataJsonConstants;
import org.activiti.editor.language.json.converter.BpmnJsonConverter;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Model;
import org.apache.commons.lang3.StringUtils;
import org.codehaus.jackson.map.ObjectMapper;
import org.codehaus.jackson.node.ObjectNode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.flex.remoting.RemotingDestination;
import org.springframework.stereotype.Controller;

import com.jtgh.yjpt.common.BusinessContext;

@Controller
@RemotingDestination
public class ModelController extends BaseController {

	protected Logger logger = LoggerFactory.getLogger(getClass());

	@Autowired
	private RepositoryService repositoryService;

	/**
	 * 创建模型
	 * @param name
	 * @param key
	 * @param description
	 * @return
	 */
	public BusinessContext createModel(String name, String key,
			String description) {
		BusinessContext bc = createBusinessContext();
		try {
			ObjectMapper objectMapper = new ObjectMapper();
			ObjectNode editorNode = objectMapper.createObjectNode();
			editorNode.put("id", "canvas");
			editorNode.put("resourceId", "canvas");
			ObjectNode stencilSetNode = objectMapper.createObjectNode();
			stencilSetNode.put("namespace",
					"http://b3mn.org/stencilset/bpmn2.0#");
			editorNode.put("stencilset", stencilSetNode);
			Model modelData = repositoryService.newModel();

			ObjectNode modelObjectNode = objectMapper.createObjectNode();
			modelObjectNode.put(ModelDataJsonConstants.MODEL_NAME, name);
			modelObjectNode.put(ModelDataJsonConstants.MODEL_REVISION, 1);
			description = StringUtils.defaultString(description);
			modelObjectNode.put(ModelDataJsonConstants.MODEL_DESCRIPTION,
					description);
			modelData.setMetaInfo(modelObjectNode.toString());
			modelData.setName(name);
			modelData.setKey(StringUtils.defaultString(key));

			repositoryService.saveModel(modelData);
			repositoryService.addModelEditorSource(modelData.getId(),
					editorNode.toString().getBytes("utf-8"));
		} catch (Exception e) {
			logger.error("创建模型失败：", e);
			bc.setAttribute("success", false);
			bc.setAttribute("message", "创建模型失败!" );
		}
		return bc;
	}

	/**
	 * 根据Model部署流程
	 */
	public BusinessContext deploy(String modelId) {
		BusinessContext bc = createBusinessContext();
		try {
			Model modelData = repositoryService.getModel(modelId);
			ObjectNode modelNode = (ObjectNode) new ObjectMapper()
					.readTree(repositoryService.getModelEditorSource(modelData
							.getId()));
			byte[] bpmnBytes = null;

			BpmnModel model = new BpmnJsonConverter()
					.convertToBpmnModel(modelNode);
			bpmnBytes = new BpmnXMLConverter().convertToXML(model);

			String processName = modelData.getName() + ".bpmn20.xml";
			repositoryService.createDeployment().name(modelData.getName())
					.addString(processName, new String(bpmnBytes)).deploy();
		} catch (Exception e) {
			logger.error("根据模型部署流程失败：modelId={}", modelId, e);
			bc.setAttribute("success", false);
			bc.setAttribute("message", "根据模型部署流程失败：modelId=" + modelId);
		}
		return bc;
	}

	/**
	 * 删除流程
	 * @param modelId
	 * @return
	 */
	public BusinessContext delete(String modelId) {
		repositoryService.deleteModel(modelId);
		return createBusinessContext();
	}

	/**
	 * 根据条件查询用户列表
	 * 
	 * @param spec
	 * @param pageable
	 * @return
	 */
	public BusinessContext list() {
		List<Model> list = repositoryService.createModelQuery().list();
		return creaBusinessContext(list);
	}
}