package calc

import (
	"errors"
	"time"
	"zhiyuan/pkg/db"

	"github.com/gin-gonic/gin"
)

type Item struct {
	ID        int64      `json:"id" prop:"add:false"`
	CalcId    int64      `json:"calcId" type:"int" prop:"add" search:"="`
	Name      string     `json:"name" label:"项目名称" type:"string" prop:"add edit" search:"like"`
	TypeId    int64      `json:"typeId" label:"产品类别" type:"int" prop:"edit" default:"0"`
	Min       int64      `json:"min" label:"最小数量" type:"int" prop:"add edit" default:"0"`
	Max       int64      `json:"max" label:"最大数量" type:"int" prop:"add edit" default:"0"`
	State     int64      `json:"state" label:"状态" type:"int" prop:"edit" default:"0"`
	ParentId  int64      `json:"parentId" type:"int" prop:"add" search:"=" default:"0"`
	OrderAt   int64      `json:"order_at" prop:"add:false select:false"`
	DeletedAt int64      `json:"deleted_at" prop:"add:false select:false"`
	CreatedAt int64      `json:"created_at" prop:"add:false select:false"`
	UpdatedAt int64      `json:"updated_at" prop:"add:false select:false"`
	Props     []Property `json:"props" prop:"ignore"`
	Childs    []Item     `json:"childs" prop:"ignore"`
	db.BaseModel
}

func (Item) TableName() string {
	return "zy_calc_item"
}

func (Item) ListPrivilege(c *gin.Context, data map[string]interface{}, s *db.Select) bool {
	return true
}

func (Item) OnePrivilege(c *gin.Context, id int64) bool {
	return true
}

func (Item) AddPrivilege(c *gin.Context, data map[string]interface{}, post map[string]interface{}) error {
	if data["parentId"] != nil && data["parentId"].(int64) != 0 {
		var p Item
		db.GetModel(map[string]interface{}{
			"id": data["parentId"].(int64),
		}, &p)
		if p.ID == 0 {
			return errors.New("没有权限")
		}
	}
	if data["min"].(int64) > data["max"].(int64) {
		return errors.New("没有权限")
	}
	return nil
}

func (Item) EditPrivilege(c *gin.Context, id int64, data map[string]interface{}, post map[string]interface{}) error {
	return nil
}

func (Item) DelPrivilege(c *gin.Context, id int64) error {
	return nil
}

func (Item) OrderField() string {
	return "order_at"
}

func (Item) Page() bool {
	return false
}

func (Item) Count() bool {
	return false
}

func (Item) AddAfter(c *gin.Context, id int64, post map[string]interface{}, data map[string]interface{}) {
	if use, ok := post["use"].(float64); ok && use != 0 {
		calc := GetCalculateModel(int64(use), true)
		if calc != nil {
			if calcId, ok := db.ToInt64(data["calcId"]); ok {
				order := time.Now().Unix()
				CopyPropertys(calc.Props, calcId, id, order)
				CopyItems(calc.Items, calcId, id, order)
			}
		}
	}
}

func findItems(itemId int64, list []Item, props []Property) []Item {
	items := make([]Item, 0)
	for _, v := range list {
		if v.ParentId == itemId {
			v.Props = findProps(v.ID, props)
			v.Childs = findItems(v.ID, list, props)
			items = append(items, v)
		}
	}
	return items
}

func GetItemModel(id int64, showAll bool) *Item {
	var item *Item
	db.GetModel(map[string]interface{}{"id": id}, &item)
	if item != nil {
		var items []Item
		var props []Property
		where := map[string]interface{}{"calcId": item.CalcId, "deleted_at": 0}
		if !showAll {
			where["state"] = 1
		}
		db.GetModel(where, &items)
		if !showAll {
			where["type !="] = 1
		}
		db.GetModel(where, &props)
		item.Props = findProps(item.ID, props)
		item.Childs = findItems(item.ID, items, props)
	}
	return item
}

func CopyItems(items []Item, calcId int64, parentId int64, order int64) error {
	for i, item := range items {
		_, err := item.Copy(item.Name, calcId, parentId, order+int64(len(items)-i))
		if err != nil {
			return err
		}
	}
	return nil
}

func (model Item) Copy(name string, calcId int64, parentId int64, order int64) (int64, error) {
	id, err := db.InsertModel(db.Type(model), map[string]interface{}{
		"calcId":   calcId,
		"name":     name,
		"typeId":   model.TypeId,
		"min":      model.Min,
		"max":      model.Max,
		"state":    model.State,
		"parentId": parentId,
		"order_at": order,
	})
	if err != nil {
		return 0, err
	}
	err = CopyPropertys(model.Props, calcId, id, order)
	if err != nil {
		return id, err
	}
	err = CopyItems(model.Childs, calcId, id, order)
	if err != nil {
		return id, err
	}
	return id, nil
}