chore: 重写初始提交(清空历史,整理后全量提交)
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ywxapp
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<?php
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// +----------------------------------------------------------------------
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// | YwxApp [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2026-2036 http://ywxapp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Author: ywxapp<admin@ywxapp.cn>
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// +----------------------------------------------------------------------
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declare (strict_types = 1);
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namespace addon\docs\service;
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use addon\docs\model\DocsDoc;
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use think\facade\Cache;
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/**
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* 文档目录树服务
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*
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* 负责目录树构建、扁平化、上下篇计算与面包屑生成。
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* 一次性取出项目 + 版本下的全部节点，在内存中建树，避免递归查库。
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*
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* @author ywxapp <admin@ywxapp.cn>
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*/
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class DocTreeService
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{
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/**
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* 缓存标签，便于文档变更时整体失效
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*/
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const CACHE_TAG = 'docs_tree';
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/**
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* 构建目录树
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*
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* @param int $projectId 项目ID
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* @param int $versionId 版本ID
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* @param bool $onlyEnable 是否只取启用节点，后台管理传 false
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* @return array 树形数组，每个节点含 children 键
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*/
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public static function buildTree(int $projectId, int $versionId, bool $onlyEnable = true): array
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{
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$nodes = self::rawNodes($projectId, $versionId, $onlyEnable);
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return self::toTree($nodes);
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}
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/**
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* 获取扁平的有序文档列表（深度优先，与目录树展示顺序一致）
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*
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* 用于计算上一篇 / 下一篇，纯目录节点会被排除。
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*
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* @param int $projectId 项目ID
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* @param int $versionId 版本ID
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* @param bool $onlyEnable 是否只取启用节点
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* @return array
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*/
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public static function flatten(int $projectId, int $versionId, bool $onlyEnable = true): array
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{
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$tree = self::buildTree($projectId, $versionId, $onlyEnable);
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$list = [];
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self::flattenTree($tree, $list);
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return $list;
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}
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/**
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* 计算上一篇 / 下一篇
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*
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* @param int $projectId 项目ID
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* @param int $versionId 版本ID
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* @param int $currentId 当前文档ID
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* @return array{prev: array|null, next: array|null}
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*/
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public static function siblings(int $projectId, int $versionId, int $currentId): array
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{
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$list = self::flatten($projectId, $versionId);
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$index = -1;
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foreach ($list as $i => $item) {
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if ((int) $item['id'] === $currentId) {
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$index = $i;
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break;
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}
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}
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if ($index < 0) {
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return ['prev' => null, 'next' => null];
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}
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return [
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'prev' => $list[$index - 1] ?? null,
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'next' => $list[$index + 1] ?? null,
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];
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}
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/**
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* 生成面包屑路径（从顶级到当前节点）
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*
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* @param int $projectId 项目ID
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* @param int $versionId 版本ID
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* @param int $currentId 当前文档ID
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* @return array
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*/
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public static function breadcrumb(int $projectId, int $versionId, int $currentId): array
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{
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$nodes = self::rawNodes($projectId, $versionId, true);
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$map = [];
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foreach ($nodes as $node) {
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$map[(int) $node['id']] = $node;
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}
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$crumbs = [];
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$cursor = $currentId;
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$guard = 0;
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while (isset($map[$cursor]) && $guard < 50) {
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array_unshift($crumbs, $map[$cursor]);
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$cursor = (int) $map[$cursor]['pid'];
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$guard++;
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}
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return $crumbs;
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}
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/**
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* 获取目录树中第一篇可阅读的文档
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*
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* @param int $projectId 项目ID
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* @param int $versionId 版本ID
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* @return array|null
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*/
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public static function firstDoc(int $projectId, int $versionId): ?array
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{
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$list = self::flatten($projectId, $versionId);
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return $list[0] ?? null;
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}
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/**
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* 构建下拉选择用的层级选项（标题带缩进前缀）
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*
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* @param int $projectId 项目ID
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* @param int $versionId 版本ID
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* @param int $excludeId 需排除的节点ID（编辑时排除自身及其子树）
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* @return array
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*/
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public static function selectOptions(int $projectId, int $versionId, int $excludeId = 0): array
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{
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$tree = self::buildTree($projectId, $versionId, false);
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$options = [];
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self::walkOptions($tree, $options, 0, $excludeId);
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return $options;
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}
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/**
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* 清空目录树缓存
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*
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* @return void
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*/
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public static function clearCache(): void
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{
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try {
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Cache::tag(self::CACHE_TAG)->clear();
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} catch (\Throwable $e) {
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// 缓存驱动不支持标签时忽略，不影响业务
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}
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}
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/**
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* 读取原始节点列表（带缓存）
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*
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* @param int $projectId 项目ID
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* @param int $versionId 版本ID
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* @param bool $onlyEnable 是否只取启用节点
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* @return array
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*/
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protected static function rawNodes(int $projectId, int $versionId, bool $onlyEnable): array
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{
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$ttl = (int) self::configValue('tree_cache_ttl', 3600);
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$key = 'docs_nodes_' . $projectId . '_' . $versionId . '_' . ($onlyEnable ? 1 : 0);
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if ($ttl > 0) {
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try {
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$cached = Cache::get($key);
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if (is_array($cached)) {
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return $cached;
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}
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} catch (\Throwable $e) {
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// 缓存读取失败时直接查库
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}
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}
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$query = DocsDoc::field('id,pid,name,title,is_dir,sort,status,project_id,version_id')
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->where('project_id', $projectId)
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->where('version_id', $versionId);
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if ($onlyEnable) {
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$query->where('status', 1);
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}
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$nodes = $query->order('sort', 'asc')->order('id', 'asc')->select()->toArray();
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if ($ttl > 0) {
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try {
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Cache::tag(self::CACHE_TAG)->set($key, $nodes, $ttl);
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} catch (\Throwable $e) {
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// 缓存写入失败不影响返回
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}
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}
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return $nodes;
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}
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/**
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* 数组建树
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*
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* @param array $nodes 平铺节点
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* @return array
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*/
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protected static function toTree(array $nodes): array
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{
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$map = [];
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foreach ($nodes as $node) {
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$node['children'] = [];
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$map[(int) $node['id']] = $node;
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}
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$tree = [];
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foreach ($map as $id => $node) {
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$pid = (int) $node['pid'];
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if ($pid > 0 && isset($map[$pid])) {
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$map[$pid]['children'][] = &$map[$id];
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} else {
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$tree[] = &$map[$id];
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}
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}
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unset($node);
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return $tree;
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}
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/**
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* 深度优先展开树，仅收集可阅读文档
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*
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* @param array $tree 树
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* @param array $list 输出列表（引用）
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* @return void
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*/
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protected static function flattenTree(array $tree, array &$list): void
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{
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foreach ($tree as $node) {
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if ((int) $node['is_dir'] !== 1) {
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$item = $node;
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unset($item['children']);
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$list[] = $item;
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}
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if (!empty($node['children'])) {
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self::flattenTree($node['children'], $list);
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}
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}
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}
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/**
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* 递归生成层级选项
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*
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* @param array $tree 树
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* @param array $options 输出（引用）
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* @param int $depth 当前深度
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* @param int $excludeId 排除节点ID
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* @return void
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*/
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protected static function walkOptions(array $tree, array &$options, int $depth, int $excludeId): void
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{
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foreach ($tree as $node) {
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if ($excludeId > 0 && (int) $node['id'] === $excludeId) {
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continue;
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}
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$options[] = [
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'id' => (int) $node['id'],
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'title' => str_repeat(' ', $depth) . ($depth > 0 ? '└ ' : '') . $node['title'],
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];
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if (!empty($node['children'])) {
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self::walkOptions($node['children'], $options, $depth + 1, $excludeId);
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}
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}
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}
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/**
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* 读取插件配置项
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*
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* @param string $key 配置键
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* @param mixed $default 默认值
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* @return mixed
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*/
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protected static function configValue(string $key, $default = null)
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{
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try {
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$config = get_addon_config('docs');
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if (is_array($config) && isset($config[$key]) && $config[$key] !== '') {
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return $config[$key];
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}
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} catch (\Throwable $e) {
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// 配置读取失败时使用默认值
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}
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return $default;
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}
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}
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