wisdomisite-java/src/main/java/com/zhgd/xmgl/util/FlowSeviceUtil.java

package com.zhgd.xmgl.util;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.gexin.fastjson.JSON;
import com.gexin.fastjson.JSONArray;
import com.gexin.fastjson.JSONObject;
import com.wflow.bean.do_.UserDeptDo;
import com.wflow.bean.entity.WflowModelHistorys;
import com.wflow.bean.entity.WflowSubProcess;
import com.wflow.mapper.WflowModelHistorysMapper;
import com.wflow.mapper.WflowSubProcessMapper;
import com.wflow.service.OrgRepositoryService;
import com.wflow.workflow.UELTools;
import com.wflow.workflow.bean.dto.ProcessInstanceOwnerDto;
import com.wflow.workflow.bean.process.OrgUser;
import com.wflow.workflow.bean.process.ProcessNode;
import com.wflow.workflow.bean.process.enums.ApprovalModeEnum;
import com.wflow.workflow.bean.process.enums.NodeTypeEnum;
import com.wflow.workflow.bean.process.props.ApprovalProps;
import com.wflow.workflow.bean.process.props.CcProps;
import com.wflow.workflow.bean.vo.ProcessConditionResolveParamsVo;
import com.wflow.workflow.bean.vo.ProcessProgressVo;
import com.wflow.workflow.bean.vo.ProcessTaskVo;
import com.wflow.workflow.config.WflowGlobalVarDef;
import com.wflow.workflow.service.*;
import com.wflow.workflow.service.impl.ProcessTaskServiceImpl;
import com.zhgd.jeecg.common.execption.OpenAlertException;
import com.zhgd.xmgl.security.util.SecurityUtils;
import lombok.extern.slf4j.Slf4j;
import org.flowable.engine.HistoryService;
import org.flowable.engine.RepositoryService;
import org.flowable.engine.RuntimeService;
import org.flowable.engine.TaskService;
import org.flowable.engine.history.HistoricProcessInstance;
import org.flowable.engine.runtime.ProcessInstanceQuery;
import org.flowable.task.api.Task;
import org.flowable.task.api.TaskInfo;
import org.flowable.task.api.TaskQuery;
import org.flowable.task.api.history.HistoricTaskInstance;
import org.flowable.variable.api.history.HistoricVariableInstance;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;

import java.util.*;
import java.util.stream.Collectors;

@Component
@Slf4j
public class FlowSeviceUtil {
    private final static OrgUser UNKNOW_USER = OrgUser.builder().id("5201314").name("人员待定").build();

    @Lazy
    @Autowired
    private TaskService taskService;
    @Lazy
    @Autowired
    private RuntimeService runtimeService;
    @Lazy
    @Autowired
    private ProcessInstanceService processService;
    @Lazy
    @Autowired
    private WflowModelHistorysMapper modelHistorysMapper;
    @Lazy
    @Autowired
    private HistoryService historyService;
    @Lazy
    @Autowired
    private RepositoryService repositoryService;
    @Lazy
    @Autowired
    private UserDeptOrLeaderService userDeptOrLeaderService;
    @Lazy
    @Autowired
    private ProcessStepRenderService stepRenderService;
    @Lazy
    @Autowired
    private ProcessTaskServiceImpl processTaskService;
    @Lazy
    @Autowired
    private OrgRepositoryService orgRepositoryService;
    @Lazy
    @Autowired
    private BusinessDataStorageService businessDataService;
    @Lazy
    @Autowired
    private UELTools uelTools;
    @Lazy
    @Autowired
    private WflowSubProcessMapper subProcessMapper;
    @Lazy
    @Autowired
    private ProcessNodeCatchService nodeCatchService;

    /**
     * 获取下一个待处理的审批节点
     *
     * @param instanceId
     * @param dfNodeId
     * @return
     */
    public ProcessProgressVo.ProgressNode getNextTodoApproval(String instanceId, String dfNodeId) {
        //先查实例，然后判断是子流程还是主流程
        HistoricProcessInstance instance = historyService.createHistoricProcessInstanceQuery()
                .processInstanceId(instanceId).singleResult();
        //数据分类 表单配置及数据、审批任务结果、
        ProcessInstanceOwnerDto owner = null;
        Map<String, Object> formDatas = new HashMap<>();
        //是否是子流程
        boolean isSub = StrUtil.isNotBlank(instance.getSuperProcessInstanceId());
        HistoricProcessInstance mainInst = isSub ? null : instance;
        if (isSub) {
            //查出主流程表单数据
            mainInst = historyService.createHistoricProcessInstanceQuery()
                    .processInstanceId(instance.getSuperProcessInstanceId()).singleResult();
            formDatas = businessDataService.getProcessInstanceFormData(mainInst.getId());
        }
        //优化查询，把之前查好几次的一次性查出来然后再分类
        List<HistoricVariableInstance> variables = historyService.createHistoricVariableInstanceQuery()
                .processInstanceId(instanceId).executionId(instanceId).list();
        Map<String, Object> vars = Objects.nonNull(instance.getEndTime()) ?
                new HashMap<>() : uelTools.getContextVar(instanceId, instance.getProcessDefinitionId());
        //遍历所有变量，将数据分类
        for (HistoricVariableInstance var : variables) {
            vars.put(var.getVariableName(), var.getValue());
            if (!isSub && var.getVariableName().startsWith("field")) {
                formDatas.put(var.getVariableName(), var.getValue());
            } else if (WflowGlobalVarDef.OWNER.equals(var.getVariableName())) {
                owner = (ProcessInstanceOwnerDto) var.getValue();
            } else if (WflowGlobalVarDef.START_DEPT.equals(var.getVariableName())) {
                String key = instance.getStartUserId() + "_" + var.getValue();
                Map<String, UserDeptDo> infoMap = orgRepositoryService.getUserDeptInfos(CollectionUtil.newArrayList(key));
                UserDeptDo userDeptDo = infoMap.getOrDefault(key, new UserDeptDo());
                owner = ProcessInstanceOwnerDto.builder().ownerDeptId(String.valueOf(var.getValue()))
                        .owner(instance.getStartUserId()).ownerName(userDeptDo.getUserName())
                        .ownerDeptId(userDeptDo.getDeptId()).ownerDeptName(userDeptDo.getDeptName()).build();
            }
        }
        Map<String, ProcessNode<?>> nodeMap = Collections.emptyMap();
        if (isSub) {
            WflowSubProcess subProcess = subProcessMapper.selectOne(new LambdaQueryWrapper<>(WflowSubProcess.builder()
                    .procDefId(instance.getProcessDefinitionId()).build()));
            nodeMap = nodeCatchService.reloadProcessByStr(subProcess.getProcess());
            HistoricVariableInstance formsVar = historyService.createHistoricVariableInstanceQuery()
                    .processInstanceId(mainInst.getId()).variableName(WflowGlobalVarDef.WFLOW_FORMS).singleResult();
        }
        //搜索当前版本流程的配置
        WflowModelHistorys modelHistory = modelHistorysMapper.selectOne(new LambdaQueryWrapper<>(WflowModelHistorys.builder()
                .processDefId(mainInst.getProcessDefinitionId()).version(mainInst.getProcessDefinitionVersion()).build()));
        if (StrUtil.isNotBlank(dfNodeId)) {
            nodeMap = nodeCatchService.reloadProcessByStr(modelHistory.getProcess());
        }

        List<ProcessProgressVo.ProgressNode> progressNodeList = this.getFutureTask(instance, owner.getOwnerDeptId(), vars, nodeMap, modelHistory.getTenantId());
        if (CollUtil.isEmpty(progressNodeList)) {
            throw new OpenAlertException("获取下一个待处理的审批节点超时失败，instanceId=" + instanceId + "，nodeId=" + dfNodeId);
        }
        return progressNodeList.get(0);
    }

    private boolean isProcessDone(String process, String curNodeId, String dfNodeId) {
        JSONObject rootJo = JSON.parseObject(process);
        int i = 0;
        return getDeepFromProcess(rootJo, curNodeId, i) > getDeepFromProcess(rootJo, dfNodeId, i);
    }

    private Integer getDeepFromProcess(JSONObject jo, String curNodeId, int i) {
        String id = jo.getString("id");
        if (id.equals(curNodeId)) {
            return i;
        }
        String type = jo.getString("type");
        if (type.equals("CONDITIONS")) {
            JSONArray array = jo.getJSONArray("branchs");
            for (int j = 0; j < array.size(); j++) {
                i = getDeepFromProcess(array.getJSONObject(j), curNodeId, i);
            }
        } else {
            JSONObject children = jo.getJSONObject("children");
            if (CollUtil.isEmpty(children)) {
                return i;
            }
            i = getDeepFromProcess(children, curNodeId, ++i);
        }
        return i;
    }

    /**
     * 获取我的待办的instanceIdList
     *
     * @param code 表单id，安全检查：wf66f6451c48b718d0aaf27522
     * @return
     */
    public List<String> getMyTodoInstanceIds(String code, String projectSn) {
        if (SecurityUtils.getUser() == null) {
            ArrayList<String> list = new ArrayList<>();
            list.add("-1");
            return list;
        }
        String userId = String.valueOf(SecurityUtils.getUser().getUserId());
        TaskQuery taskQuery = taskService.createTaskQuery();
        if (StrUtil.isNotBlank(code)) {
            taskQuery.processDefinitionKey(code);
        }
        ProcessInstanceQuery processInstanceQuery = runtimeService.createProcessInstanceQuery();
        Set<String> stringSet = processInstanceQuery.list().stream().map(p -> p.getProcessInstanceId()).collect(Collectors.toSet());
        taskQuery.active().taskTenantId(projectSn)
                .processInstanceIdIn(stringSet)
                .taskCandidateOrAssigned(userId)
                .orderByTaskCreateTime().desc();
        Page<ProcessTaskVo> page = new Page<>();
        List<Task> taskList = new ArrayList<>();
        taskList = taskQuery.list();
        List<String> list = taskList.stream().map(o -> o.getProcessInstanceId()).collect(Collectors.toList());
        if (CollUtil.isEmpty(list)) {
            list.add("-1");
        }
        return list;
    }

    private Set<String> getCcTaskUsers(String instanceId, String nodeId) {
        //获取设置项
        HistoricVariableInstance variableInstance = historyService.createHistoricVariableInstanceQuery()
                .processInstanceId(instanceId)
                .variableName(WflowGlobalVarDef.WFLOW_NODE_PROPS).singleResult();
        Map nodeProps;
        if (Objects.nonNull(variableInstance)) {
            nodeProps = (Map) variableInstance.getValue();
        } else {
            //流程首个节点需要从执行实例中取数据
            nodeProps = runtimeService.getVariable(instanceId, WflowGlobalVarDef.WFLOW_NODE_PROPS, Map.class);
        }
        CcProps ccProps = (CcProps) nodeProps.get(nodeId);
        //获取变量里面自选的抄送人
        Set<String> ccUsers = new HashSet<>();
        List<OrgUser> orgs = new ArrayList<>(ccProps.getAssignedUser());
        if (ccProps.getShouldAdd()) {
            //获取发起流程时添加的抄送人
            HistoricVariableInstance result = historyService.createHistoricVariableInstanceQuery()
                    .processInstanceId(instanceId)
                    .variableName(nodeId).singleResult();
            if (Objects.nonNull(result)) {
                Optional.ofNullable(result.getValue()).ifPresent(us -> orgs.addAll((List<OrgUser>) us));
            } else {
                Optional.ofNullable(runtimeService.getVariable(instanceId, nodeId, List.class)).ifPresent(orgs::addAll);
            }
        }
        //解析部门与人员选项
        ccUsers.addAll(orgs.stream().filter(org -> "user".equals(org.getType()))
                .map(OrgUser::getId).collect(Collectors.toSet()));
        ccUsers.addAll(userDeptOrLeaderService.getUsersByDept(orgs.stream()
                .filter(org -> "dept".equals(org.getType()))
                .map(OrgUser::getId).collect(Collectors.toSet())));
        return ccUsers;
    }

    private List<ProcessProgressVo.ProgressNode> getFutureTask(HistoricProcessInstance instance, String
            startDept, Map<String, Object> context, Map<String, ProcessNode<?>> nodes, String tenantId) {
        //根据流程遍历后续节点，期间要穿越后续包含并行网关和条件网关的节点，先找到所有激活的任务节点开始递归
        //节点如果处于并行/包容分支内，可能会有多个活动的节点
        List<ProcessProgressVo.ProgressNode> progressNodes = new LinkedList<>();
        try {
            Set<String> idSet = new LinkedHashSet<>();
            context.put("root", instance.getStartUserId());
            taskService.createTaskQuery().processInstanceId(instance.getId()).active().list()
                    .stream().map(TaskInfo::getTaskDefinitionKey)
                    .collect(Collectors.toSet()).forEach(nodeId -> {
                        //根据每个活动的节点进行遍历，最终它们会在合流点汇聚
                        idSet.add(nodeId);
                        Optional.ofNullable(nodes.get(nodeId)).ifPresent(node -> {
                            //已激活的当前节点，需要进行去重
                            if (node.getProps() instanceof ApprovalProps) {
                                ApprovalProps props = (ApprovalProps) node.getProps();
                                List<String> users = processTaskService.getApprovalUsers(instance.getId(), node.getId(), props, tenantId);
                                //取已下发的任务
                                List<HistoricTaskInstance> ingTask = historyService.createHistoricTaskInstanceQuery()
                                        .processInstanceId(instance.getId()).taskDefinitionKey(nodeId).list();
                                //转交的也要过滤掉,但是只能过滤一次转交的
                                Set<String> ingTaskUser = ingTask.stream().map(TaskInfo::getAssignee).collect(Collectors.toSet());
                                ingTaskUser.addAll(ingTask.stream().filter(v -> Objects.nonNull(v.getOwner()))
                                        .map(HistoricTaskInstance::getOwner).collect(Collectors.toList()));
                                Map<String, OrgUser> userMaps = userDeptOrLeaderService.getUserMapByIds(users);
                                users.stream().filter(v -> !ingTaskUser.contains(v))
                                        .forEach(us -> {
                                            Date createTime = ingTask.get(ingTask.size() - 1).getCreateTime();
                                            //把时间往后延长10ms，使其排列到后方
                                            createTime.setTime(createTime.getTime() + 10);
                                            progressNodes.add(ProcessProgressVo.ProgressNode.builder()
                                                    .nodeId(node.getId())
//                                                    .isFuture(true)
                                                    .name(node.getName())
                                                    .user(userMaps.getOrDefault(us, UNKNOW_USER))
                                                    .nodeType(node.getType())
                                                    .comment(Collections.emptyList())
                                                    .approvalMode(props.getMode())
                                                    .startTime(createTime)
                                                    .build());
                                        });
                            }
                            //遍历后续节点
                            foreachNode(node.getChildren(), idSet, progressNodes, instance, context, tenantId);
                        });
                    });
        } catch (Exception e) {
            log.error("获取[{}]未开始任务异常: {}", instance.getId(), e.getMessage());
        }
        return progressNodes;
    }

    private void foreachNode(ProcessNode<?> node, Set<String> idSet, List<ProcessProgressVo.ProgressNode> progressNodes,
                             HistoricProcessInstance instance, Map<String, Object> vars, String tenantId) {
        if (Objects.isNull(node) || StrUtil.isBlank(node.getId()) || idSet.contains(node.getId())) return;
        idSet.add(node.getId());
        if ((NodeTypeEnum.TASK.equals(node.getType()) || NodeTypeEnum.APPROVAL.equals(node.getType())
                || NodeTypeEnum.CC.equals(node.getType()))) {
            //没有遍历过的节点，且是（审批、抄送、办理）把对应的人员解析出来
            Collection<String> users;
            ApprovalModeEnum modeEnum;
            if (NodeTypeEnum.CC.equals(node.getType())) {
                modeEnum = null;
                users = getCcTaskUsers(instance.getId(), node.getId());
            } else {
                ApprovalProps props = (ApprovalProps) node.getProps();
                modeEnum = props.getMode();
                users = processTaskService.getApprovalUsers(instance.getId(), node.getId(), props, tenantId);
            }
            Map<String, OrgUser> userMaps = userDeptOrLeaderService.getUserMapByIds(users);
            users.forEach(us -> progressNodes.add(ProcessProgressVo.ProgressNode.builder()
                    .nodeId(node.getId())
//                    .isFuture(true)
                    .name(node.getName())
                    .user(userMaps.getOrDefault(us, UNKNOW_USER))
                    .nodeType(node.getType())
                    .comment(Collections.emptyList())
                    .approvalMode(modeEnum)
                    .startTime(GregorianCalendar.getInstance().getTime())
                    .build()));
        } else if (NodeTypeEnum.CONCURRENTS.equals(node.getType())) {
            //并行网关，全部需要递归遍历
            node.getBranchs().forEach(branch -> {
                foreachNode(branch, idSet, progressNodes, instance, vars, tenantId);
            });
            //从分支出来继续往下遍历
        } else if (NodeTypeEnum.INCLUSIVES.equals(node.getType()) || NodeTypeEnum.CONDITIONS.equals(node.getType())) {
            //包容网关/条件网关，满足条件的分支都要执行
            List<String> trueConditions = stepRenderService.getIsTrueConditions(ProcessConditionResolveParamsVo.builder()
                    .processDfId(instance.getProcessDefinitionId())
                    .conditionNodeId(node.getId()).context(vars)
                    .multiple(NodeTypeEnum.INCLUSIVES.equals(node.getType()))
                    .build());
            //遍历满足条件的分支
            node.getBranchs().forEach(bNode -> {
                if (trueConditions.contains(bNode.getId())) {
                    foreachNode(bNode, idSet, progressNodes, instance, vars, tenantId);
                }
            });
        } else if (NodeTypeEnum.EMPTY.equals(node.getType())) {
            //空节点的话是合流点，说明前面有网关，那么要回头再向上去找节点，太复杂了，难搞
            //nodes.get(node.getParentId())
        }
        foreachNode(node.getChildren(), idSet, progressNodes, instance, vars, tenantId);
    }


}