package org.springblade.mdm.flow.service;

import lombok.AllArgsConstructor;
import org.flowable.engine.HistoryService;
import org.flowable.engine.RuntimeService;
import org.flowable.engine.TaskService;
import org.flowable.engine.history.HistoricProcessInstance;
import org.flowable.engine.runtime.ProcessInstance;
import org.flowable.task.api.Task;
import org.flowable.task.api.history.HistoricTaskInstance;
import org.springblade.core.tool.api.R;
import org.springblade.core.tool.utils.Func;
import org.springblade.core.tool.utils.StringUtil;
import org.springblade.mdm.flow.constants.FlowContants;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.RequestBody;

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

@AllArgsConstructor
@Service
public class FlowCommonService {
	private final RuntimeService runtimeService;
	private final HistoryService historyService;

	/**
	 * 根据流程实例id获取definitionKey
	 * @param processInstanceId
	 * @return
	 */
	public String getDefinitionKey(String processInstanceId){

		ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()
			.processInstanceId(processInstanceId)
			.singleResult();
		return processInstance.getProcessDefinitionKey();
	}

	/**
	 * 从流程变量获取发起流程的树形
	 * @param processInstanceId
	 * @return
	 */
	public FlowProgramProperties getProgramProperties(String processInstanceId){
		FlowProgramProperties programProperties = new FlowProgramProperties();
		programProperties.setProcessInstanceId(processInstanceId);

		Map<String, Object> vars = runtimeService.getVariables(processInstanceId);

		programProperties.setTitle(String.valueOf(vars.get(FlowContants.TITLE)));
		programProperties.setDrawingNo(String.valueOf(vars.get(FlowContants.DRAWING_NO)));
		programProperties.setDrawingNoEdition(String.valueOf(vars.get(FlowContants.DRAWING_NO_EDITION)));
		programProperties.setProductModel(String.valueOf(vars.get(FlowContants.PRODUCT_MODEL)));

		programProperties.setProcessNo(String.valueOf(vars.get(FlowContants.PROCESS_NO)));
		programProperties.setProcessEdition(String.valueOf(vars.get(FlowContants.PROCESS_EDITION)));//工序版次
		programProperties.setProcessName(String.valueOf(vars.get(FlowContants.PROCESS_NAME)));
		programProperties.setMachineCode(String.valueOf(vars.get(FlowContants.MACHINE_CODE)));

		programProperties.setMachineMode(String.valueOf(vars.get(FlowContants.MACHINE_MODE)));
		//数据处理名称为版次以前，零件号加工序号：YZL4-1100-01-50 零组件号：YZL4-1100-01 工序号 50

		programProperties.setCraftEdition(String.valueOf(vars.get(FlowContants.CRAFT_EDITION)));
		programProperties.setHasCuredProgram(String.valueOf(vars.get(FlowContants.HAS_CURED_PROGRAM)));
		programProperties.setIsProcessEditionSame(String.valueOf(vars.get(FlowContants.IS_PROCESS_EDITION_SAME)));
		if(vars.containsKey(FlowContants.DEVIATION)) {
			programProperties.setDeviation(String.valueOf(vars.get(FlowContants.DEVIATION)));
		}
		if(vars.containsKey(FlowContants.CURED_NODE_ID)){
			programProperties.setCuredNodeId(Func.toLong(vars.get(FlowContants.CURED_NODE_ID)));
		}

		ProcessInstance processInstance = runtimeService.createProcessInstanceQuery()
			.processInstanceId(processInstanceId)
			.singleResult();
		String processDefinitionKey = processInstance.getProcessDefinitionKey();
		programProperties.setProcessDefinitionKey(processDefinitionKey);
		return programProperties;
	}

	/**
	 * 流程是否在进行
	 * @param processInstanceId 实例id
	 */
	public boolean isProcessInstanceActive(String processInstanceId) {
		if(processInstanceId == null){
			return false;
		}
		// 先查运行时表
		ProcessInstance instance = runtimeService.createProcessInstanceQuery()
			.processInstanceId(processInstanceId)
			.singleResult();

		if (instance != null) {
			return true;
		}

		// 再查历史表确认是否曾经存在
		HistoricProcessInstance historicInstance = historyService.createHistoricProcessInstanceQuery()
			.processInstanceId(processInstanceId)
			.singleResult();

		return historicInstance != null && historicInstance.getEndTime() == null;
	}

	/**
	 * 上一步处理人
	 * @param processInstanceId 流程实例id
	 * @return assignee
	 */
    public String previusAssignee(String processInstanceId) {
		// 获取历史任务实例
		List<HistoricTaskInstance> historicTasks = historyService.createHistoricTaskInstanceQuery()
			.processInstanceId(processInstanceId)
			.orderByHistoricTaskInstanceEndTime().asc()
			.list();

		// 获取上一个已完成的任务
		String assignee = "";
		if(!historicTasks.isEmpty()) {
			assignee = historicTasks.get(historicTasks.size() - 1).getAssignee();
		}
		return assignee;
    }
}