package oa

import (
	"WiiCITMS/models/oa"
	"WiiGenerates/WiiCITMS/generates/v1/go/types"
	"WiiGoLibrary/apply/middle/process/v1"
	"WiiGoLibrary/framework/db/v1/utils/mssql/unique"
	"WiiGoLibrary/framework/hub/v1/dblib"
	"errors"
)

// GetInstanceGuidByApprovalRecord 根据审批记录ID获取工作流实例ID
func GetInstanceGuidByApprovalRecord(recordGuid string) (string, error) {
	// 验证审批记录ID格式
	guid, err := unique.FromString(recordGuid)
	if err != nil {
		return "", errors.New("无效的审批记录ID格式")
	}
	
	// 查询审批记录
	record := &oa.ApprovalRecordModel{}
	r := dblib.DBIns.DB.Where("RecordGuid = ? AND (RecordStatus & 524288) = 0", guid).First(record)
	if r.Error != nil {
		return "", errors.New("审批记录不存在")
	}
	
	// 返回工作流实例ID
	return record.InstanceGuid.String(), nil
}

// GetRecordApprover 根据审批记录ID获取审批人ID
func GetRecordApprover(recordGuid string) (string, error) {
	// 验证审批记录ID格式
	guid, err := unique.FromString(recordGuid)
	if err != nil {
		return "", errors.New("无效的审批记录ID格式")
	}
	
	// 查询审批记录
	record := &oa.ApprovalRecordModel{}
	r := dblib.DBIns.DB.Where("RecordGuid = ? AND (RecordStatus & 524288) = 0", guid).First(record)
	if r.Error != nil {
		return "", errors.New("审批记录不存在")
	}
	
	// 返回审批人ID
	return record.ApproverGuid.String(), nil
}

// VerifyApproverForRecord 验证指定用户是否是审批记录的审批人
func VerifyApproverForRecord(recordGuid string, approverGuid string) *process.Process {
	// 获取审批记录的审批人
	recordApproverGuid, err := GetRecordApprover(recordGuid)
	if err != nil {
		return process.FailError(types.ApprovalRecordNotFoundError, err)
	}
	
	// 验证是否是指定的审批人
	if recordApproverGuid != approverGuid {
		return process.FailError(types.NoPermissionError, errors.New("非指定审批人，无权操作"))
	}
	
	return process.Success(200)
}