package services

import (
	"eta/eta_mini_crm/models"
	"eta/eta_mini_crm/utils"
)

// GetSysDepartmentTree 递归获取部门目录树
func GetSysDepartmentTree(list []*models.SysDepartmentList, parentId int) []*models.SysDepartmentList {
	res := make([]*models.SysDepartmentList, 0)
	for _, v := range list {
		if v.ParentId == parentId {
			t := new(models.SysDepartmentList)
			t.SysDepartmentId = v.SysDepartmentId
			t.SysDepartmentName = v.SysDepartmentName
			t.Level = v.Level
			t.ParentId = v.ParentId
			t.Child = GetSysDepartmentTree(list, v.SysDepartmentId)
			res = append(res, t)
		}
	}
	return res
}

// DeleteSysDepartmentById 根据部门id去删除部门下的所有子目录，并清除用户的关联信息
func DeleteSysDepartmentById(sysDepartmentId, level int) (msg string, err error) {
	sysDepartment, err := models.GetSysDepartmentById(sysDepartmentId)
	if err != nil {
		if err.Error() == utils.ErrNoRow() {
			msg = "部门不存在"
			return
		}
		return
	}
	if sysDepartment.SysDepartmentName == "营业部" {
		msg = "营业部不能被删除"
		return
	}
	parentDep, err := models.GetSysDepartmentById(sysDepartment.ParentId)
	if err != nil {
		if err.Error() == utils.ErrNoRow() {
			msg = "父部门不存在"
			return
		}
		return
	}
	if parentDep.SysDepartmentName == "营业部" {
		condition := ` AND seller_department_id=? `
		count, er := models.GetUserCount(condition, []interface{}{sysDepartment.SysDepartmentId})
		if er != nil {
			err = er
			return
		}
		if count > 0 {
			msg = "该营业部有关联用户，无法删除"
			return
		}
	}
	sysDepartmentIds := make([]int, 0)
	sysDepartmentIds = append(sysDepartmentIds, sysDepartmentId)
	var curIds = sysDepartmentIds
	var curStringIds []int
	for i := level; i < 3; i++ {
		// 从当前层部门依次向下遍历子部门
		curStringIds = curIds
		if len(curStringIds) == 0 {
			break
		}
		sysDepartments, er := models.GetChildSysDepartmentListByIds(curStringIds)
		if er != nil {
			err = er
			return
		}
		curIds = make([]int, 0)
		for _, dep := range sysDepartments {
			if dep.SysDepartmentId == 0 {
				continue
			}
			sysDepartmentIds = append(sysDepartmentIds, dep.SysDepartmentId)
			curIds = append(curIds, dep.SysDepartmentId)
		}
	}
	err = models.DeleteSysDepartmentByIdV2(sysDepartmentIds, level)
	return
}

// GetSysDepartmentPathIdsById 根据当前部门id获取，部门层级列表pathIds [3]int，0索引表示1级部门id，1表示2级部门id...
func GetSysDepartmentPathIdsById(sysDepartmentId int) (pathIds []int, err error) {
	sysDepartment, err := models.GetSysDepartmentById(sysDepartmentId)
	if err != nil {
		return
	}

	pathIds = make([]int, 3)
	pathIds[sysDepartment.Level-1] = sysDepartmentId
	curSysDepartmentId := sysDepartment.ParentId
	for curLevel := sysDepartment.Level - 1; curLevel >= 1; curLevel-- {
		upSysDepartment, er := models.GetSysDepartmentById(curSysDepartmentId)
		if er != nil {
			return
		}
		curSysDepartmentId = upSysDepartment.ParentId
		pathIds[curLevel-1] = upSysDepartment.SysDepartmentId
	}
	return
}