package com.xcgl.activititask.util;

import com.xcgl.activititask.bean.ActivitiTaskResult;
import com.xcgl.activititask.entity.PActivitiTaskEntity;
import com.xcgl.projecttask.entity.ProjecttaskEntity;
import org.apache.commons.lang.xwork.StringUtils;

import java.util.Collections;
import java.util.List;

public class ActivitiTaskHandlerUtil {
    public static ActivitiTaskHandler getHandler(String handlerClassValue){
        if(StringUtils.isNotBlank(handlerClassValue)){
            try {
                Class clazz = Class.forName(handlerClassValue);
                ActivitiTaskHandler handler = (ActivitiTaskHandler) clazz.newInstance();
                return handler;
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (InstantiationException e) {
                e.printStackTrace();
            }
        }
        return new NullHandler();
    }
    private static class NullHandler implements ActivitiTaskHandler{
        @Override
        public boolean canDo(PActivitiTaskEntity activitiTaskEntity, String table, String formId) {
            return false;
        }

        @Override
        public List<ProjecttaskEntity> createTask(PActivitiTaskEntity activitiTaskEntity, String table, String formId) {
            return Collections.EMPTY_LIST;
        }

        @Override
        public ActivitiTaskResult checkResult(ProjecttaskEntity projecttask) {
            ActivitiTaskResult  result = new ActivitiTaskResult();
            result.setDone(true);
            return result;
        }
    }
}