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hajimi
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<?php
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namespace app\common\service\ai;
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use app\common\model\ai\AiConfig;
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use app\common\model\match\MatchEvent;
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use think\facade\Cache;
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class AiAssistantContextService
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{
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private const CRYPTO_SYMBOLS = [
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'BTC' => ['BTC', '比特币', 'Bitcoin'],
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'ETH' => ['ETH', '以太坊', 'Ethereum'],
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'BNB' => ['BNB'],
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'SOL' => ['SOL', 'Solana'],
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'XRP' => ['XRP', 'Ripple'],
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'DOGE' => ['DOGE', '狗狗币', 'Dogecoin'],
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'TON' => ['TON', 'Toncoin'],
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'TRX' => ['TRX', 'TRON', '波场'],
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'ADA' => ['ADA', 'Cardano'],
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'AVAX' => ['AVAX', 'Avalanche'],
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];
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public static function build(string $message, int $userId, int $sessionId): array
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{
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$topK = max(1, min(12, (int) AiConfig::getVal('assistant_kb_topk', '6')));
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$hits = self::retrieveKnowledge($message, $userId, $sessionId, $topK);
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$matchItems = self::searchMatches($message);
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$cryptoItems = self::resolveCryptoContext($message);
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$sources = [];
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foreach ($hits as $hit) {
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$sources[] = self::sourceFromKbHit($hit);
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}
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foreach ($matchItems as $item) {
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$sources[] = $item['source'];
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}
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foreach ($cryptoItems as $item) {
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$sources[] = $item['source'];
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}
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$sources = self::uniqueSources($sources);
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$context = [
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'knowledge_hits' => array_map([self::class, 'compactHit'], $hits),
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'match_context' => array_column($matchItems, 'context'),
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'crypto_realtime' => array_column($cryptoItems, 'context'),
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];
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return [
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'context_text' => json_encode($context, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT),
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'sources' => array_values($sources),
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'has_context' => !empty($hits) || !empty($matchItems) || !empty($cryptoItems),
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];
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}
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private static function retrieveKnowledge(string $message, int $userId, int $sessionId, int $topK): array
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{
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$result = KbService::retrieve(
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'assistant_chat',
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$message,
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[
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'user_id' => $userId,
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'ref_id' => $sessionId,
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'domains' => ['article', 'post', 'lottery', 'match'],
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],
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['title' => $message],
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$topK
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);
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if (empty($result['success']) || empty($result['hits']) || !is_array($result['hits'])) {
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return [];
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}
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return $result['hits'];
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}
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private static function searchMatches(string $message): array
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{
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$terms = self::queryTerms($message);
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if (empty($terms)) {
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return [];
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}
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try {
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$query = MatchEvent::where('is_show', 1);
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$query->where(function ($q) use ($terms) {
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foreach (array_slice($terms, 0, 5) as $term) {
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$like = '%' . $term . '%';
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$q->whereOr('home_team', 'like', $like)
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->whereOr('away_team', 'like', $like)
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->whereOr('league_name', 'like', $like);
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}
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});
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$rows = $query->field('id,league_name,home_team,away_team,match_time,status,home_score,away_score,home_odds,draw_odds,away_odds')
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->order('match_time desc')
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->limit(3)
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->select()
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->toArray();
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} catch (\Throwable $e) {
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return [];
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}
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return array_map(static function (array $row) {
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$title = trim(($row['home_team'] ?? '') . ' vs ' . ($row['away_team'] ?? ''));
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$matchTime = !empty($row['match_time']) && is_numeric($row['match_time'])
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? date('Y-m-d H:i', (int) $row['match_time'])
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: (string) ($row['match_time'] ?? '');
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$summary = sprintf(
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'%s，%s，比分 %s-%s，赔率 主胜%s 平%s 客胜%s。',
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$row['league_name'] ?? '',
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$matchTime,
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$row['home_score'] ?? 0,
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$row['away_score'] ?? 0,
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$row['home_odds'] ?? '-',
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$row['draw_odds'] ?? '-',
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$row['away_odds'] ?? '-'
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);
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return [
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'context' => [
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'domain' => 'match',
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'title' => $title,
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'summary' => $summary,
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],
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'source' => [
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'type' => 'match',
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'title' => $title,
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'summary' => $summary,
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'path' => '/pages/match_detail/match_detail?id=' . (int) $row['id'],
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'source_id' => (int) $row['id'],
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],
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];
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}, $rows);
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}
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private static function resolveCryptoContext(string $message): array
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{
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if ((int) AiConfig::getVal('assistant_enable_crypto_realtime', '1') !== 1) {
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return [];
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}
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$symbols = self::detectCryptoSymbols($message);
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if (empty($symbols)) {
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return [];
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}
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$items = [];
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foreach (array_slice($symbols, 0, 3) as $symbol) {
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$ticker = self::fetchBinanceTicker($symbol);
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if (empty($ticker)) {
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continue;
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}
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$price = (float) ($ticker['lastPrice'] ?? 0);
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$change = (float) ($ticker['priceChangePercent'] ?? 0);
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$high = (float) ($ticker['highPrice'] ?? 0);
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$low = (float) ($ticker['lowPrice'] ?? 0);
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$summary = sprintf(
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'%s/USDT 当前价格 %.8g，24小时涨跌 %.2f%%，24小时高低 %.8g / %.8g。',
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$symbol,
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$price,
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$change,
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$high,
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$low
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);
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$items[] = [
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'context' => [
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'domain' => 'crypto',
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'symbol' => $symbol,
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'summary' => $summary,
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'raw' => [
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'price' => $price,
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'change_percent' => $change,
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'high' => $high,
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'low' => $low,
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],
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],
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'source' => [
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'type' => 'crypto',
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'title' => $symbol . '/USDT 行情',
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'summary' => $summary,
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'path' => '/pages/crypto/crypto_detail?symbol=' . $symbol,
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'source_id' => 0,
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],
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];
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}
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return $items;
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}
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private static function detectCryptoSymbols(string $message): array
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{
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$haystack = mb_strtolower($message);
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$symbols = [];
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foreach (self::CRYPTO_SYMBOLS as $symbol => $aliases) {
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foreach ($aliases as $alias) {
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if (mb_strpos($haystack, mb_strtolower($alias)) !== false) {
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$symbols[] = $symbol;
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break;
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}
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}
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}
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return array_values(array_unique($symbols));
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}
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private static function fetchBinanceTicker(string $symbol): array
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{
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$cacheKey = 'assistant_crypto_ticker_' . $symbol;
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$cached = Cache::get($cacheKey);
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if (is_array($cached)) {
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return $cached;
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}
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$url = 'https://api.binance.com/api/v3/ticker/24hr?symbol=' . rawurlencode($symbol . 'USDT');
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$ch = curl_init($url);
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curl_setopt_array($ch, [
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CURLOPT_RETURNTRANSFER => true,
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CURLOPT_TIMEOUT => 8,
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CURLOPT_CONNECTTIMEOUT => 4,
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CURLOPT_SSL_VERIFYPEER => false,
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CURLOPT_HTTPHEADER => ['Accept: application/json'],
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]);
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$body = curl_exec($ch);
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$httpCode = (int) curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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$data = $httpCode === 200 ? json_decode((string) $body, true) : [];
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if (is_array($data) && !empty($data['symbol'])) {
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Cache::set($cacheKey, $data, 10);
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return $data;
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}
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return [];
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}
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private static function sourceFromKbHit(array $hit): array
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{
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$domain = (string) ($hit['domain'] ?? '');
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$sourceId = (int) ($hit['source_id'] ?? 0);
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return [
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'type' => $domain,
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'title' => (string) ($hit['title'] ?? ''),
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'summary' => self::clipText((string) ($hit['summary'] ?? $hit['chunk_text'] ?? ''), 120),
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'path' => self::sourcePath($domain, $sourceId),
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'source_id' => $sourceId,
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];
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}
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private static function sourcePath(string $domain, int $sourceId): string
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{
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return match ($domain) {
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'article' => '/pages/news_detail/news_detail?id=' . $sourceId,
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'post' => '/packages_community/pages/post_detail?id=' . $sourceId,
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'match' => '/pages/match_detail/match_detail?id=' . $sourceId,
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'lottery' => '/pages/lottery_analysis/lottery_analysis',
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default => '',
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};
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}
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private static function compactHit(array $hit): array
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{
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return [
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'domain' => $hit['domain'] ?? '',
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'subtype' => $hit['subtype'] ?? '',
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'source_id' => (int) ($hit['source_id'] ?? 0),
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'title' => $hit['title'] ?? '',
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'summary' => $hit['summary'] ?? '',
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'content' => self::clipText((string) ($hit['chunk_text'] ?? ''), 360),
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'score' => $hit['score'] ?? 0,
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];
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}
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private static function uniqueSources(array $sources): array
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{
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$map = [];
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foreach ($sources as $source) {
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$key = ($source['type'] ?? '') . ':' . ($source['source_id'] ?? 0) . ':' . ($source['title'] ?? '');
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if (!isset($map[$key]) && trim((string) ($source['title'] ?? '')) !== '') {
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$map[$key] = $source;
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}
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}
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return array_slice(array_values($map), 0, 8);
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}
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private static function queryTerms(string $message): array
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{
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$terms = preg_split('/[\s,，。！？；、:：\/\\\\]+/u', trim($message)) ?: [];
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$terms = array_values(array_filter(array_map('trim', $terms), static function (string $term) {
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return mb_strlen($term) >= 2 && !in_array($term, ['今天', '最近', '分析', '什么', '一下'], true);
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}));
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return array_unique($terms);
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}
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private static function clipText(string $text, int $length): string
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{
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$text = trim(preg_replace('/\s+/u', ' ', $text) ?: '');
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if (mb_strlen($text) <= $length) {
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return $text;
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}
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return mb_substr($text, 0, $length) . '...';
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}
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}
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