package tenant

import (
	model2 "ArmedPolice/app/common/model"
	"ArmedPolice/app/controller/basic"
	"ArmedPolice/app/model"
	"ArmedPolice/app/service"
	"errors"
)

type Instance struct{ *service.Session }

type InstanceHandle func(session *service.Session) *Instance

type (
	// InstanceInfo 租户信息
	InstanceInfo struct {
		ID       string `json:"id"`
		ParentID string `json:"parent_id"`
		Name     string `json:"name"`
		*model2.Area
		*model2.AreaInfo
		Remark   string          `json:"remark"`
		Children []*InstanceInfo `json:"children"`
	}
	// InstanceParams 参数信息
	InstanceParams struct {
		ID, ParentID uint64
		Name, Remark string
		basic.CommonArea
	}
)

func (c *Instance) tree(iModel model2.IModel, src []*model2.SysTenant, parentID uint64) []*InstanceInfo {
	out := make([]*InstanceInfo, 0)

	for _, v := range src {
		if v.ParentID == parentID {
			iModel.SetID(v.ParentID)
			out = append(out, &InstanceInfo{
				ID:       v.GetEncodeID(),
				ParentID: iModel.GetEncodeID(),
				Name:     v.Name,
				Area:     &v.Area,
				AreaInfo: v.Area.Format(),
				Remark:   v.Remark,
				Children: c.tree(iModel, src, v.ID),
			})
		}
	}
	return out
}

// List 列表信息
func (c *Instance) List() ([]*InstanceInfo, error) {
	mSysTenant := model.NewSysTenant()

	out := make([]*model2.SysTenant, 0)

	if err := model2.Find(mSysTenant.SysTenant, &out); err != nil {
		return nil, err
	}
	return c.tree(mSysTenant.SysTenant, out, 0), nil
}

// Form 数据操作
func (c *Instance) Form(params *InstanceParams) error {
	mSysTenant := model.NewSysTenant()

	if params.ID > 0 {
		mSysTenant.ID = params.ID

		isExist, err := model2.First(mSysTenant.SysTenant)

		if err != nil {
			return err
		} else if !isExist {
			return errors.New("操作错误，数据不存在")
		}
	}
	mSysTenant.ParentID = params.ParentID
	mSysTenant.Name = params.Name
	mSysTenant.Area = model2.Area{
		Province: params.Province, City: params.City, District: params.District, Address: params.Address,
	}
	mSysTenant.Remark = params.Remark

	if mSysTenant.ID > 0 {
		return model2.Updates(mSysTenant.SysTenant, mSysTenant.SysTenant)
	}
	return model2.Create(mSysTenant.SysTenant)
}

// Delete 删除操作
func (c *Instance) Delete(id uint64) error {
	mSysTenant := model.NewSysTenant()
	mSysTenant.ID = id
	return model2.Delete(mSysTenant.SysTenant)
}

func NewInstance() InstanceHandle {
	return func(session *service.Session) *Instance {
		return &Instance{session}
	}
}