package diagram

import (
	"fmt"

	"github.com/gofrs/uuid"
)

var GlobalTree *MultiBranchTreeNode

// MultiBranchTreeNode represents a topological structure using an multi branch tree
type MultiBranchTreeNode struct {
	ID                uuid.UUID              // 节点唯一标识
	NodeComponentType int                    // 节点组件类型
	Parent            *MultiBranchTreeNode   // 指向父节点的指针
	Children          []*MultiBranchTreeNode // 指向所有子节点的指针切片
}

func NewMultiBranchTree(id uuid.UUID, componentType int) *MultiBranchTreeNode {
	return &MultiBranchTreeNode{
		ID:                id,
		NodeComponentType: componentType,
		Children:          make([]*MultiBranchTreeNode, 0),
	}
}

func (n *MultiBranchTreeNode) AddChild(child *MultiBranchTreeNode) {
	child.Parent = n
	n.Children = append(n.Children, child)
}

func (n *MultiBranchTreeNode) RemoveChild(childID uuid.UUID) bool {
	for i, child := range n.Children {
		if child.ID == childID {
			n.Children = append(n.Children[:i], n.Children[i+1:]...)
			child.Parent = nil
			return true
		}
	}
	return false
}

func (n *MultiBranchTreeNode) FindNodeByID(id uuid.UUID) *MultiBranchTreeNode {
	if n.ID == id {
		return n
	}

	for _, child := range n.Children {
		if found := child.FindNodeByID(id); found != nil {
			return found
		}
	}
	return nil
}

func (n *MultiBranchTreeNode) PrintTree(level int) {
	for i := 0; i < level; i++ {
		fmt.Print("  ")
	}

	fmt.Printf("- ComponentType:%d,(ID: %s)\n", n.NodeComponentType, n.ID)

	for _, child := range n.Children {
		child.PrintTree(level + 1)
	}
}