<?php

namespace App\Models;


use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Collection;

class SiteAlbumFolder extends Model
{
    protected $table = 'site_album_folder';

    // 定义与自身的关系，用于获取子文件夹
    public function children()
    {
        return $this->hasMany(SiteAlbumFolder::class, 'parent_id');
    }

    // 递归构建父子关系树
    public static function buildTree(Collection $folders, $parentId = null)
    {
        return $folders
            ->where('parent_id', $parentId) // 过滤出当前层级的文件夹
            ->sortByDesc('order') // 按顺序排序
            ->map(function ($folder) use ($folders) {
                // 递归获取子文件夹
                $folder->children = self::buildTree($folders, $folder->id);
                return [
                    'id' => $folder->id,
                    'title' => $folder->title,
                    'parent_id' => $folder->parent_id,
                    'order' => $folder->order,
                    'folder_type' => $folder->folder_type,
                    'show_tabs' => $folder->show_tabs,
                    'enabled' => $folder->enabled,
                    'created_at' => $folder->created_at,
                    'updated_at' => $folder->updated_at,
                    'cover' => $folder->cover,
                    'children' => $folder->children->values()->toArray(), // 子文件夹数据
                ];
            })
            ->values(); // 重置键名
    }

    //
    public static function getfolderTreeIds($title)
    {
        // 获取所有文件夹记录并预加载子级
        $folders = self::with('children')->get()->toArray();
        $ids = [];

        // 递归遍历查找目标标题的节点及其子节点
        array_walk($folders, function ($folder) use ($title, &$ids) {
            if ($folder['title'] == $title) {
                self::collectIdsRecursive($folder, $ids);
            }
        });

        return array_unique($ids); // 去重后返回
    }

    /**
     * 递归收集节点及其子节点ID
     */
    protected static function collectIdsRecursive($node, &$ids)
    {
        $ids[] = $node['id'];
        if (!empty($node['children'])) {
            array_walk($node['children'], function ($child) use (&$ids) {
                self::collectIdsRecursive($child, $ids);
            });
        }
    }


}