385 lines
22 KiB
PHP
385 lines
22 KiB
PHP
<?php
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declare(strict_types=1);
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namespace app\common\service\followupaudio;
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use DateTimeImmutable;
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use DateTimeZone;
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use DomainException;
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/** Pure conservative normalization. Model text is data, never a write instruction. */
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final class FollowupAudioPolicy
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{
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public const PERIODS = ['凌晨', '早晨', '上午', '中午', '下午', '晚上', '睡前'];
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public static function canonical(array $value): string
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{
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$sort = static function ($item) use (&$sort) {
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if (!is_array($item)) { return $item; }
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if (!array_is_list($item)) { ksort($item, SORT_STRING); }
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foreach ($item as $key => $child) { $item[$key] = $sort($child); }
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return $item;
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};
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return json_encode($sort($value), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRESERVE_ZERO_FRACTION | JSON_THROW_ON_ERROR);
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}
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public static function hash(array $value): string { return hash('sha256', self::canonical($value)); }
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public static function strictDate($value): string
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{
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if (!is_string($value) || !preg_match('/^\d{4}-\d{2}-\d{2}$/D', $value)) {
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throw new DomainException('FOLLOWUP_AUDIO_DATE_INVALID');
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}
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$date = DateTimeImmutable::createFromFormat('!Y-m-d', $value, new DateTimeZone('Asia/Shanghai'));
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if (!$date || $date->format('Y-m-d') !== $value || $value < '1900-01-01') {
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throw new DomainException('FOLLOWUP_AUDIO_DATE_INVALID');
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}
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return $value;
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}
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public static function strictRecordedAt(string $value): string
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{
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$date = DateTimeImmutable::createFromFormat('!Y-m-d H:i:s', $value, new DateTimeZone('Asia/Shanghai'));
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if (!$date || $date->format('Y-m-d H:i:s') !== $value || $value < '1900-01-01 00:00:00' || $date->getTimestamp() > time() + 300) {
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throw new DomainException('FOLLOWUP_AUDIO_RECORDED_AT_INVALID');
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}
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return $value;
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}
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public static function dayTimestamp(string $date): int
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{
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return (new DateTimeImmutable(self::strictDate($date) . ' 00:00:00', new DateTimeZone('Asia/Shanghai')))->getTimestamp();
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}
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public static function strictTime($value): ?string
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{
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if ($value === null || $value === '') { return null; }
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if (!is_string($value) || !preg_match('/^(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d)?$/D', $value)) {
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throw new DomainException('FOLLOWUP_AUDIO_TIME_INVALID');
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}
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return substr($value, 0, 5);
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}
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public static function normalizeExtraction(array $result, string $recordedAt): array
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{
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self::strictRecordedAt($recordedAt);
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if (!is_string($result['transcript'] ?? null) || trim($result['transcript']) === '' || strlen($result['transcript']) > 2000000
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|| !is_string($result['summary'] ?? null) || strlen($result['summary']) > 60000 || !is_array($result['items'] ?? null)
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|| count($result['items']) > 500 || !is_array($result['uncertainties'] ?? [])) {
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throw new DomainException('FOLLOWUP_AUDIO_EXTRACTION_INVALID');
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}
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$uncertainties = [];
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foreach (($result['uncertainties'] ?? []) as $uncertainty) {
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if (is_string($uncertainty) && count($uncertainties) < 200) { $uncertainties[] = mb_substr($uncertainty, 0, 1000); }
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}
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$items = [];
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$seenEvents = [];
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$segments = array_key_exists('transcript_segments', $result) ? self::segments($result['transcript_segments']) : null;
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$segmentIndex = $segments === null ? [] : array_column($segments, null, 'id');
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foreach ($result['items'] as $index => $raw) {
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try {
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if (!is_array($raw) || !is_string($raw['kind'] ?? null) || !is_array($raw['values'] ?? null)) {
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throw new DomainException('FOLLOWUP_AUDIO_ITEM_INVALID');
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}
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$kind = $raw['kind'];
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$values = FollowupAudioFields::validateValues($kind, $raw['values']);
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$evidence = self::evidence($raw['evidence'] ?? []);
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$quoted = $evidence !== [];
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foreach ($evidence as $quote) {
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if (!str_contains($result['transcript'], $quote['text'])) { $quoted = false; }
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if ($segments !== null) {
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$segment = $segmentIndex[$quote['segment_id'] ?? ''] ?? null;
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if ($segment === null || !str_contains($segment['text'], $quote['text'])
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|| ($quote['position_type'] ?? '') !== 'segment'
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|| ($quote['start_ms'] ?? null) !== $segment['start_ms']
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|| ($quote['end_ms'] ?? null) !== $segment['end_ms']) {
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throw new DomainException('FOLLOWUP_AUDIO_EVIDENCE_SEGMENT_INVALID');
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}
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} elseif (isset($quote['segment_id'])) {
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throw new DomainException('FOLLOWUP_AUDIO_EVIDENCE_SEGMENT_INVALID');
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}
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}
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$dateText = self::shortText($raw['date_text'] ?? '');
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$timeText = self::shortText($raw['time_text'] ?? '');
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[$date, $dateText, $dateReview] = self::evidenceDate($raw['record_date'] ?? null, $dateText,
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$recordedAt, $result['transcript'], $quoted ? $evidence : [], $segments !== null, $segmentIndex);
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$time = self::strictTime($raw['record_time'] ?? null);
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$period = self::period($raw['time_period'] ?? $timeText);
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// Approved default clocks are estimates, never claims of an exact spoken measurement time.
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$estimated = ($time === null && $kind !== 'diagnosis') || !empty($raw['time_estimated']);
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if ($time === null && $kind !== 'diagnosis') { $time = self::estimatedTime($period); }
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$needsReview = !empty($raw['needs_review']) || !$quoted || $dateReview
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|| FollowupAudioFields::requiresClinicalReview($kind, $values)
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|| self::riskyEvidenceContext($result['transcript'], $evidence)
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|| ($kind !== 'diagnosis' && ($date === null || $estimated));
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if ($date !== null && ($date > substr($recordedAt, 0, 10) || ($kind === 'diagnosis' && $date < substr($recordedAt, 0, 10)))) { $needsReview = true; }
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$item = [
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'id' => '', 'kind' => $kind, 'values' => $values, 'record_date' => $date, 'record_time' => $time,
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'time_period' => $period, 'time_estimated' => $estimated, 'time_text' => $timeText, 'date_text' => $dateText,
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'evidence' => $evidence, 'needs_review' => $needsReview, 'selected' => false, 'target_id' => null,
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'current_values' => [], 'expected_hash' => '', 'conflict' => false, 'possible_duplicate' => false,
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];
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// Equal measurements/default times are NOT enough to collapse different utterances.
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$identity = ['kind' => $kind, 'values' => $values, 'date' => $date, 'time' => $time, 'period' => $period, 'evidence' => $evidence];
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$eventHash = self::hash($identity);
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if ($evidence !== [] && isset($seenEvents[$eventHash])) { continue; }
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$seenEvents[$eventHash] = true;
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$item['id'] = 'i_' . substr(self::hash([$identity, 'index' => $index]), 0, 32);
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$items[] = $item;
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} catch (DomainException $exception) {
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// Retain transcript for a human; do not silently turn unknown/invalid values into "normal".
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$uncertainties[] = '第' . ($index + 1) . '项未进入可写字段：' . $exception->getMessage();
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}
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}
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$normalized = ['summary' => trim($result['summary']), 'transcript' => $result['transcript'],
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'uncertainties' => array_slice($uncertainties, 0, 200), 'items' => $items];
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if ($segments !== null) { $normalized['transcript_segments'] = $segments; }
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return $normalized;
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}
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/**
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* Conservative review gate, NOT a semantic classifier. A substring proves neither
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* speaker identity nor negation/current-vs-historical meaning. Look around every
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* occurrence so a shortened quote cannot hide an adjacent question or family cue.
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*/
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private static function riskyEvidenceContext(string $transcript, array $evidence): bool
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{
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$pattern = '/(?:家属|家人|父亲|母亲|爸爸|妈妈|父母|儿子|女儿|丈夫|妻子|老伴|爱人|爷爷|奶奶|姥姥|姥爷|'
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. '哥哥|姐姐|弟弟|妹妹|兄弟|姐妹|孩子|他们|她们|他(?:的|在|测|用)|她(?:的|在|测|用)|'
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. '客服|工作人员|销售|推测|可能是|请问|问[：:]|[?？]|是否|有没有|是不是|多少|吗|呢|否认|没有|没|未|不是|不|'
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. '更正|纠正|说错|口误|改成|其实|好像|可能|大概|大约|差不多|估计|似乎|左右|记不清|忘记|以前|曾经|过去|之前|上次|去年|前年|往年|当时|停药|停用|'
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. '\b(?:family|father|mother|wife|husband|son|daughter|no|not|never|denied|maybe|uncertain|previously|stopped|correction)\b)/iu';
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foreach ($evidence as $quote) {
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$offset = 0;
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$occurrences = 0;
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$length = mb_strlen($quote['text'], 'UTF-8');
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while (($position = mb_strpos($transcript, $quote['text'], $offset, 'UTF-8')) !== false) {
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// Excessively repeated fragments cannot establish a unique reliable context.
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if (++$occurrences > 20) { return true; }
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$start = max(0, $position - 160);
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$context = mb_substr($transcript, $start, $position - $start + $length + 160, 'UTF-8');
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if (preg_match($pattern, $context)) { return true; }
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$offset = $position + max(1, $length);
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}
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}
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return false;
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}
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public static function period($value): ?string
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{
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if ($value === null || $value === '') { return null; }
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if (!is_string($value)) { throw new DomainException('FOLLOWUP_AUDIO_PERIOD_INVALID'); }
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$aliases = ['morning' => '上午', 'noon' => '中午', 'afternoon' => '下午', 'evening' => '晚上',
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'night' => '晚上', 'bedtime' => '睡前', '早上' => '早晨', '清晨' => '早晨', '傍晚' => '晚上'];
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$value = $aliases[$value] ?? $value;
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foreach (self::PERIODS as $period) {
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if (str_contains($value, $period)) { return $period; }
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}
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return null;
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}
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public static function estimatedTime(?string $period): ?string
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{
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return ['早晨' => '08:00', '上午' => '08:00', '中午' => '12:00', '下午' => '15:00',
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'晚上' => '20:00', '睡前' => '22:00'][$period ?? ''] ?? null;
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}
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private static function resolveDate($explicit, string $text, string $recordedAt): ?string
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{
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// A model-supplied calendar date cannot resolve an explicitly ambiguous spoken range.
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if (preg_match('/(?:或|至|到|最近|这几天|前几天|近几天|上周|上星期|上个月|不记得|记不清|大概|左右|between|around)/iu', $text)) { return null; }
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$base = new DateTimeImmutable(substr($recordedAt, 0, 10), new DateTimeZone('Asia/Shanghai'));
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$relative = null;
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foreach (['前天' => '-2 days', '昨天' => '-1 day', '昨日' => '-1 day', '今天' => '+0 days', '今日' => '+0 days',
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'yesterday' => '-1 day', 'today' => '+0 days'] as $word => $offset) {
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if ($text === $word || str_starts_with($text, $word)) { $relative = $base->modify($offset)->format('Y-m-d'); break; }
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}
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if ($explicit !== null && $explicit !== '') {
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$date = self::strictDate($explicit);
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// A relative phrase and supplied date disagree: leave unresolved instead of trusting one silently.
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return $relative !== null && $relative !== $date ? null : $date;
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}
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if ($relative !== null) { return $relative; }
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if (preg_match('/^\d{4}-\d{2}-\d{2}$/D', $text)) { return self::strictDate($text); }
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if (preg_match('/^(\d{4})年(\d{1,2})月(\d{1,2})日$/Du', $text, $match)) {
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return self::strictDate(sprintf('%04d-%02d-%02d', $match[1], $match[2], $match[3]));
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}
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return null;
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}
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/** A model may omit or mislabel date_text; the cited words still constrain its date. */
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private static function evidenceDate($explicit, string $text, string $recordedAt, string $transcript,
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array $evidence, bool $requiresGrounding, array $segmentIndex): array
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{
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// Preserve invalid-date rejection and the established conflicting-date => null behavior.
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$supplied = $explicit === null || $explicit === '' ? null : self::strictDate($explicit);
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// A server-owned citation is a broad window, not an event/date binding. Preserve a
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// model's abstention, including on repeated normalization of a cleared conflict.
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// An explicit calendar without its spoken date label is equally unbound.
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if ($requiresGrounding && ($supplied === null || $text === '')) { return [null, $text, true]; }
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$dates = [];
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$phrases = [];
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$ambiguous = false;
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$directlyGrounded = false;
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$spokenRange = '';
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foreach ($evidence as $quote) {
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// A repeated fragment in another chunk is not evidence for this chunk's date.
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$source = $segmentIndex[$quote['segment_id'] ?? '']['text'] ?? $transcript;
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$contexts = [$quote['text']];
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[$directDates, , $directAmbiguous] = self::dateCues($quote['text'], $recordedAt);
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$directlyGrounded = $directlyGrounded || $directDates !== [];
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if ($spokenRange === '' && ($directAmbiguous || count(array_unique($directDates)) > 1)) { $spokenRange = $quote['text']; }
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if ($directDates === [] && !$directAmbiguous) {
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// Recover an omitted date prefix only within the same sentence, never another event.
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$contexts = [];
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$offset = 0;
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while (($position = mb_strpos($source, $quote['text'], $offset, 'UTF-8')) !== false) {
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if (count($contexts) >= 20) { $ambiguous = true; break; }
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$start = max(0, $position - 160);
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$before = mb_substr($source, $start, $position - $start, 'UTF-8');
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$after = mb_substr($source, $position + mb_strlen($quote['text'], 'UTF-8'), 160, 'UTF-8');
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$prefix = preg_split('/[。！？!?；;\r\n]/u', $before);
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$suffix = preg_split('/[。！？!?；;\r\n]/u', $after);
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$contexts[] = end($prefix) . $quote['text'] . ($suffix[0] ?? '');
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$offset = $position + max(1, mb_strlen($quote['text'], 'UTF-8'));
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}
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}
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foreach ($contexts as $context) {
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[$found, $words, $vague] = self::dateCues($context, $recordedAt);
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$dates = array_merge($dates, $found);
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$phrases = array_merge($phrases, $words);
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$ambiguous = $ambiguous || $vague;
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}
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}
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$dates = array_values(array_unique($dates));
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[$claimedDates, , $claimedAmbiguous] = self::dateCues($text, $recordedAt);
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$claimedDates = array_values(array_unique($claimedDates));
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if ($text === '' && $phrases !== [] && ($directlyGrounded || $ambiguous)) {
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$text = mb_substr($spokenRange !== '' ? $spokenRange : implode('；', array_unique($phrases)), 0, 255, 'UTF-8');
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}
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if ($ambiguous || $claimedAmbiguous || count($dates) > 1 || count($claimedDates) > 1) {
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return [null, $text, true];
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}
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if ($dates !== []) {
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$grounded = $dates[0];
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if (($supplied !== null && $supplied !== $grounded)
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|| ($claimedDates !== [] && $claimedDates[0] !== $grounded)) {
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return [null, $text, true];
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}
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// Neighbor words can invalidate a conflicting date, but do not prove this event's date.
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// Legacy transcripts may concatenate independent utterances without sentence boundaries.
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if (!$directlyGrounded) {
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return $requiresGrounding ? [null, $text, true] : [self::resolveDate($explicit, $text, $recordedAt), $text, false];
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}
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// An ambiguous model date label is not silently replaced by an exact evidence date.
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if (self::resolveDate(null, $text, $recordedAt) === null && preg_match('/(?:或|至|到|大概|左右|around|between)/iu', $text)) {
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return [null, $text, true];
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}
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return [$grounded, $text, false];
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}
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// A strict transcript pipeline cannot invent a calendar day when none was spoken.
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if ($requiresGrounding) { return [null, $text, true]; }
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return [self::resolveDate($explicit, $text, $recordedAt), $text, false];
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}
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/** Literal temporal cues only, not a general natural-language or speaker classifier. */
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private static function dateCues(string $text, string $recordedAt): array
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{
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$base = new DateTimeImmutable(substr($recordedAt, 0, 10), new DateTimeZone('Asia/Shanghai'));
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$offsets = ['大前天' => -3, '前天' => -2, '昨天' => -1, '昨日' => -1, '今天' => 0, '今日' => 0,
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'明天' => 1, '明日' => 1, '后天' => 2, 'day before yesterday' => -2, 'yesterday' => -1, 'today' => 0, 'tomorrow' => 1];
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$dates = [];
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$phrases = [];
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preg_match_all('/大前天|前天|昨天|昨日|今天|今日|明天|明日|后天|\b(?:day before yesterday|yesterday|today|tomorrow)\b/iu', $text, $matches);
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foreach ($matches[0] as $word) {
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$dates[] = $base->modify(sprintf('%+d days', $offsets[strtolower($word)]))->format('Y-m-d');
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$phrases[] = $word;
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}
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preg_match_all('/(?<!\d)(\d{4})[-年](\d{1,2})[-月](\d{1,2})(?:日|号)?(?!\d)/u', $text, $matches, PREG_SET_ORDER);
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foreach ($matches as $match) {
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$dates[] = self::strictDate(sprintf('%04d-%02d-%02d', $match[1], $match[2], $match[3]));
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$phrases[] = $match[0];
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}
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preg_match_all('/最近(?:几天|一周|一个月)?|这几天|前几天|近几天|前两天|前段时间|这段时间|上周|上星期|上个月|去年|前年|今年|往年|\d{4}年(?!\d{1,2}月)|不记得哪天|记不清哪天|\blast (?:week|month|year)\b|\brecently\b/iu', $text, $vague);
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// Numeric uncertainty (e.g. 昨天读数大概120左右) does not erase an unambiguous date.
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$ambiguous = $vague[0] !== [] || preg_match('/(?:大概|可能|不确定是|记不清是)(?:大前天|前天|昨天|今天)|(?:大前天|前天|昨天|今天)(?:左右|前后)/u', $text) === 1;
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preg_match_all('/(?:星期|周|礼拜)([一二三四五六日天])/u', $text, $weekdays, PREG_SET_ORDER);
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$weekdayNumbers = ['一' => 1, '二' => 2, '三' => 3, '四' => 4, '五' => 5, '六' => 6, '日' => 7, '天' => 7];
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foreach ($weekdays as $weekday) {
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$phrases[] = $weekday[0];
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if ($dates === []) { $ambiguous = true; }
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foreach ($dates as $date) {
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if ((int) (new DateTimeImmutable($date, new DateTimeZone('Asia/Shanghai')))->format('N') !== $weekdayNumbers[$weekday[1]]) {
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$ambiguous = true;
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}
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}
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}
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return [$dates, array_merge($phrases, $vague[0]), $ambiguous];
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}
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private static function segments($raw): array
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{
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if (!is_array($raw) || !array_is_list($raw) || $raw === [] || count($raw) > FollowupAudioTranscriptPrompt::MAX_SEGMENTS) {
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throw new DomainException('FOLLOWUP_AUDIO_SEGMENTS_INVALID');
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}
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$seen = [];
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foreach ($raw as $segment) {
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if (!is_array($segment) || !is_string($segment['id'] ?? null)
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|| !preg_match('/^[A-Za-z0-9_-]{1,128}$/D', $segment['id']) || isset($seen[$segment['id']])
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|| !is_string($segment['text'] ?? null) || strlen($segment['text']) > 2000000
|
||
|| !is_int($segment['start_ms'] ?? null) || !is_int($segment['end_ms'] ?? null)
|
||
|| $segment['start_ms'] < 0 || $segment['end_ms'] <= $segment['start_ms'] || $segment['end_ms'] > 3600000) {
|
||
throw new DomainException('FOLLOWUP_AUDIO_SEGMENTS_INVALID');
|
||
}
|
||
$seen[$segment['id']] = true;
|
||
}
|
||
return $raw;
|
||
}
|
||
|
||
private static function shortText($value): string
|
||
{
|
||
if (!is_string($value) || mb_strlen($value) > 255) { throw new DomainException('FOLLOWUP_AUDIO_TEXT_INVALID'); }
|
||
return trim($value);
|
||
}
|
||
|
||
private static function evidence($raw): array
|
||
{
|
||
if (!is_array($raw) || count($raw) > 30) { throw new DomainException('FOLLOWUP_AUDIO_EVIDENCE_INVALID'); }
|
||
$evidence = [];
|
||
foreach ($raw as $entry) {
|
||
if (!is_array($entry) || !is_string($entry['text'] ?? null) || trim($entry['text']) === '' || mb_strlen($entry['text']) > 5000) {
|
||
throw new DomainException('FOLLOWUP_AUDIO_EVIDENCE_INVALID');
|
||
}
|
||
$quote = [];
|
||
if (array_key_exists('segment_id', $entry)) {
|
||
if (!is_string($entry['segment_id']) || !preg_match('/^[A-Za-z0-9_-]{1,128}$/D', $entry['segment_id'])
|
||
|| ($entry['position_type'] ?? '') !== 'segment' || !isset($entry['start_ms'], $entry['end_ms'])) {
|
||
throw new DomainException('FOLLOWUP_AUDIO_EVIDENCE_SEGMENT_INVALID');
|
||
}
|
||
$quote['segment_id'] = $entry['segment_id'];
|
||
}
|
||
$quote['text'] = trim($entry['text']);
|
||
foreach (['start_ms', 'end_ms'] as $key) {
|
||
if (isset($entry[$key])) {
|
||
if (!is_int($entry[$key]) || $entry[$key] < 0 || $entry[$key] > 3600000) {
|
||
throw new DomainException('FOLLOWUP_AUDIO_EVIDENCE_TIME_INVALID');
|
||
}
|
||
$quote[$key] = $entry[$key];
|
||
}
|
||
}
|
||
if (isset($quote['start_ms'], $quote['end_ms']) && $quote['end_ms'] < $quote['start_ms']) {
|
||
throw new DomainException('FOLLOWUP_AUDIO_EVIDENCE_TIME_INVALID');
|
||
}
|
||
if (array_key_exists('position_type', $entry)) {
|
||
if ($entry['position_type'] !== 'segment' || !isset($quote['segment_id'])) {
|
||
throw new DomainException('FOLLOWUP_AUDIO_EVIDENCE_SEGMENT_INVALID');
|
||
}
|
||
$quote['position_type'] = 'segment';
|
||
}
|
||
$evidence[] = $quote;
|
||
}
|
||
return $evidence;
|
||
}
|
||
}
|