package data_approve

import (
	"encoding/json"
	DataApprove "eta_gn/eta_api/models/data_manage/data_approve"
	"eta_gn/eta_api/models/data_manage/data_approve/request"
	"eta_gn/eta_api/models/data_manage/data_approve/response"
	"eta_gn/eta_api/utils"
	"fmt"
	"time"
)

// SaveDataApproveFlow 保存审批流
func SaveDataApproveFlow(flow *request.DataApproveFlowSaveReq) (ok bool, msg string, err error) {

	flowInfo, err := DataApprove.GetDataApproveFlowByDataType(flow.DataType)
	if err != nil {
		if !utils.IsErrNoRow(err) {
			msg = "保存审批流失败, 查找审批流失败"
			return
		}
	}

	if flowInfo.DataApproveFlowId <= 0 {
		// 之前没有过记录，所以走新增
		var remark string
		switch flow.DataType {
		case utils.DataApproveTypeEdb:
			remark = `指标审批`
		case utils.DataApproveTypeChart:
			remark = `图表审批`
		}
		t := &DataApprove.DataApproveFlow{
			FlowName:    flow.FlowName,
			DataType:    flow.DataType,
			Remark:      remark,
			CurrVersion: 1,
			CreateTime:  time.Now(),
			ModifyTime:  time.Now(),
		}
		flowNodeItems := make([]*DataApprove.DataApproveNode, 0)
		for _, node := range flow.Nodes {
			flowNode := new(DataApprove.DataApproveNode)
			flowNode.ApproveType = node.ApproveType
			flowNode.CurrVersion = t.CurrVersion
			userBytes, er := json.Marshal(node.Users)
			if er != nil {
				err = er
				msg = "保存审批流失败"
				return
			}
			flowNode.Users = string(userBytes)
			flowNode.CreatedTime = time.Now()
			flowNodeItems = append(flowNodeItems, flowNode)
		}
		err = t.Add(flowNodeItems)
		if err != nil {
			msg = "保存审批流失败"
			return
		}
		ok = true
	} else {
		ok, err = CheckDeleteDataApproveFlow(flowInfo.DataApproveFlowId)
		if err != nil {
			msg = "保存审批流失败"
			return
		}
		if !ok {
			if flowInfo.DataType == utils.DataApproveTypeEdb {
				msg = "保存审批流失败, 存在还未审批的指标"
			} else {
				msg = "保存审批流失败, 存在还未审批的图表"
			}
			return
		}
		var updateCols []string
		if flowInfo.FlowName != flow.FlowName {
			flowInfo.FlowName = flow.FlowName
			updateCols = append(updateCols, "flow_name")
		}
		flowInfo.CurrVersion += 1
		flowInfo.ModifyTime = time.Now()
		updateCols = append(updateCols, "modify_time", "curr_version")

		biFlowNodeItems := make([]*DataApprove.DataApproveNode, 0)
		for _, node := range flow.Nodes {
			flowNode := new(DataApprove.DataApproveNode)
			flowNode.ApproveType = node.ApproveType
			flowNode.CurrVersion = flowInfo.CurrVersion
			userBytes, er := json.Marshal(node.Users)
			if er != nil {
				err = er
				msg = "保存审批流失败"
				return
			}
			flowNode.Users = string(userBytes)
			flowNode.CreatedTime = time.Now()
			biFlowNodeItems = append(biFlowNodeItems, flowNode)
		}

		err = flowInfo.Update(updateCols, biFlowNodeItems)
		if err != nil {
			msg = "保存审批流失败"
			return
		}
		ok = true
	}
	return
}

// GetDataApproveFlowDetail 获取审批流详情
func GetDataApproveFlowDetail(dataType int) (detail *response.DataApproveFlowDetailResp, msg string, err error) {
	flowInfo, err := DataApprove.GetDataApproveFlowByDataType(dataType)
	if err != nil && !utils.IsErrNoRow(err) {
		msg = "获取审批流详情失败"
		return
	}
	flowNodes := make([]*DataApprove.DataApproveNode, 0)

	// 如果有配置的话
	if flowInfo.DataApproveFlowId > 0 {
		flowNodes, err = DataApprove.GetDataApproveNodeByFlowIdAndVersionId(flowInfo.DataApproveFlowId, flowInfo.CurrVersion)
		if err != nil {
			msg = "获取审批流详情失败"
			return
		}
	}

	detail, err = FormatFlowAndNodesItem2Detail(flowInfo, flowNodes)
	if err != nil {
		msg = "获取审批流详情失败"
		return
	}
	return
}

// CheckDeleteDataApproveFlow 检查是否可以删除审批流
func CheckDeleteDataApproveFlow(flowId int) (ok bool, err error) {
	flowInfo, err := DataApprove.GetDataApproveFlowById(flowId)
	if err != nil {
		return
	}
	// 检查是否存在还未审批的Bi看报
	approveList, err := DataApprove.GetDataApproveByFlowIdAndVersionId(flowInfo.DataApproveFlowId, flowInfo.CurrVersion)
	if err != nil {
		return
	}
	for _, v := range approveList {
		if v.State == DataApproveStateApproving {
			return false, nil
		}
	}

	ok = true
	return
}

func FormatFlowAndNodesItem2Detail(flowItem *DataApprove.DataApproveFlow, nodeItems []*DataApprove.DataApproveNode) (detail *response.DataApproveFlowDetailResp, err error) {
	if flowItem == nil {
		return
	}
	detail = new(response.DataApproveFlowDetailResp)
	detail.DataApproveFlowId = flowItem.DataApproveFlowId
	detail.FlowName = flowItem.FlowName
	detail.DataType = flowItem.DataType
	detail.CreateTime = utils.TimeTransferString(utils.FormatDateTime, flowItem.CreateTime)
	detail.ModifyTime = utils.TimeTransferString(utils.FormatDateTime, flowItem.ModifyTime)
	detail.Nodes = make([]*response.DataApproveNodeItem, 0)
	for _, v := range nodeItems {
		t, e := FormatDataApproveNode2Item(v)
		if e != nil {
			err = fmt.Errorf("format node err: %s", e.Error())
			return
		}
		detail.Nodes = append(detail.Nodes, t)
	}
	return
}