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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* ForumSearchService —— 论坛帖子检索（ES 增强，默认 LIKE 降级）
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*/
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declare(strict_types=1);
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namespace addon\forum\service;
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use addon\forum\model\ForumTopic;
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use think\facade\Db;
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use ywxapp\library\Search\EsSearch;
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class ForumSearchService
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{
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protected static function conf(): array
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{
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return [
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'engine' => config('forum.search_engine', 'like'),
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'host' => config('forum.es_host', 'http://127.0.0.1:9200'),
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'index' => config('forum.es_index', 'ywxapp_forum'),
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];
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}
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/**
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* 前台搜索：仅返回 status=1 的帖子
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* @return \think\Paginator
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*/
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public static function search(string $kw, int $page = 1, int $size = 20)
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{
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$kw = trim($kw);
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if ($kw === '') {
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return ForumTopic::where('status', 1)->order('id desc')->paginate($size, false, ['page' => $page]);
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}
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$cfg = self::conf();
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if ($cfg['engine'] === 'es') {
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try {
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EsSearch::ensureIndex($cfg['host'], $cfg['index'], ['title', 'content']);
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$ids = EsSearch::search($cfg['host'], $cfg['index'], $kw, ['title', 'content'], 200);
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if (!empty($ids)) {
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// 保持相关度顺序 + 回表取完整行
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$list = ForumTopic::with(['board'])
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->where('status', 1)
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->whereIn('id', $ids)
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->select()
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->all();
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$order = array_flip($ids);
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$list = collect($list)->sortBy(function ($m) use ($order) {
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return $order[$m->id] ?? PHP_INT_MAX;
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})->values();
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// 包装成分页结构（ES 结果集直接返回，分页信息从 ids 推算）
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$total = count($ids);
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$coll = $list;
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$paginator = new \think\Paginator($coll, $size, $page);
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return $paginator;
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}
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} catch (\RuntimeException $e) {
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// ES 不可用：降级 LIKE
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}
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}
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// 默认 LIKE 分支
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return ForumTopic::with(['board'])
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->where('status', 1)
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->where('title', 'like', '%' . addslashes($kw) . '%')
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->order('id desc')
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->paginate($size, false, ['page' => $page]);
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}
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/**
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* 同步单条到 ES（发帖/编辑后调用）
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*/
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public static function sync(int $topicId): void
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{
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$cfg = self::conf();
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if ($cfg['engine'] !== 'es') {
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return;
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}
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try {
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$t = ForumTopic::find($topicId);
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if (!$t) {
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return;
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}
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EsSearch::ensureIndex($cfg['host'], $cfg['index'], ['title', 'content']);
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if ((int) $t->status !== 1) {
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EsSearch::deleteDoc($cfg['host'], $cfg['index'], $topicId);
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return;
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}
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EsSearch::indexDoc($cfg['host'], $cfg['index'], $topicId, [
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'title' => $t->title,
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'content' => $t->content,
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]);
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} catch (\RuntimeException $e) {
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// 静默：索引失败不影响主流程
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}
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}
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/**
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* 删除索引文档
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*/
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public static function remove(int $topicId): void
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{
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$cfg = self::conf();
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if ($cfg['engine'] !== 'es') {
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return;
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}
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try {
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EsSearch::deleteDoc($cfg['host'], $cfg['index'], $topicId);
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} catch (\RuntimeException $e) {
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}
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}
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/**
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* 相关帖子推荐：优先 ES more_like_this，未启用 ES 时降级为「同版块 + 标题关键词」相似度
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* @return \addon\forum\model\ForumTopic[]
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*/
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public static function related(int $topicId, int $limit = 6): array
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{
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$topic = ForumTopic::find($topicId);
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if (!$topic) {
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return [];
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}
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$cfg = self::conf();
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if ($cfg['engine'] === 'es') {
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try {
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EsSearch::ensureIndex($cfg['host'], $cfg['index'], ['title', 'content']);
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$ids = EsSearch::moreLikeThis(
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$cfg['host'], $cfg['index'],
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$topic->title . "\n" . $topic->content,
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['title', 'content'], $topicId, $limit
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);
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if (!empty($ids)) {
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return ForumTopic::with(['board'])
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->where('status', 1)
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->whereIn('id', $ids)
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->select()
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->all();
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}
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} catch (\RuntimeException $e) {
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// 降级
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}
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}
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// 降级：同版块 + 标题关键词重叠，按发布时间取最近
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$kw = trim($topic->title);
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return ForumTopic::with(['board'])
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->where('status', 1)
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->where('id', '<>', $topicId)
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->where('board_id', $topic->board_id)
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->where('title', 'like', '%' . addslashes(mb_substr($kw, 0, 10)) . '%')
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->order('id desc')
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->limit($limit)
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->select()
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->all();
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}
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/**
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* 附近帖子（GEO/LBS）：Haversine 球面距离过滤，零外部依赖
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* @param float $lat 纬度
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* @param float $lng 经度
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* @param float $radiusKm 半径(千米)，默认 10
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* @param int $limit 返回数量
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* @return \addon\forum\model\ForumTopic[]
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*/
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public static function nearby(float $lat, float $lng, float $radiusKm = 10.0, int $limit = 20): array
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{
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if ($lat == 0.0 && $lng == 0.0) {
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return [];
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}
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$lat = (float) $lat;
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$lng = (float) $lng;
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// 地球半径 km
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$R = 6371;
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return ForumTopic::with(['board'])
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->where('status', 1)
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->where('lat', '<>', 0)
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->where('lng', '<>', 0)
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->fieldRaw("*, ({$R} * acos(cos(radians({$lat})) * cos(radians(lat)) * cos(radians(lng) - radians({$lng})) + sin(radians({$lat})) * sin(radians(lat)))) AS distance_km")
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->having('distance_km <= ' . floatval($radiusKm))
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->order('distance_km', 'asc')
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->limit($limit)
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->select()
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->all();
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}
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}
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