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2026-05-29 09:28:38 +08:00
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commit 94e787ae80
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server/app/api/logic/tcm/DailyDietAiLogic.php
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<?php
namespace app\api\logic\tcm;
use app\common\model\tcm\BloodRecord;
use app\common\model\tcm\Diagnosis;
use app\common\service\AiChatService;
use think\facade\Cache;
/**
* 日常护理 - AI 饮食建议（基于霍大夫升糖指数）
*/
class DailyDietAiLogic
{
private const CACHE_TTL = 86400;
/** 单次 AI 请求超时（秒），避免接口长时间挂起 */
private const AI_TIMEOUT_SEC = 12;
/** 流式 AI 请求超时（秒） */
private const AI_STREAM_TIMEOUT_SEC = 18;
/**
* 今日推荐饮食（按诊单+日期缓存）
*
* @return array{ok:bool,error?:string,data?:array}
*/
public static function getDailyRecommend(int $diagnosisId, bool $refresh = false): array
{
if ($diagnosisId <= 0) {
return ['ok' => false, 'error' => '缺少就诊卡'];
}
$cacheKey = self::recommendCacheKey($diagnosisId);
if (!$refresh) {
$cached = Cache::get($cacheKey);
if (is_array($cached) && !empty($cached['breakfast'])) {
$cached['cached'] = true;
return ['ok' => true, 'data' => $cached];
}
}
$context = self::buildPatientContext($diagnosisId);
if (!$context['ok']) {
return ['ok' => false, 'error' => $context['error'] ?? '获取档案失败'];
}
$data = null;
if (AiChatService::isEnabled()) {
$raw = self::aiDailyRecommend($context['data'], $refresh);
if (is_array($raw) && !empty($raw['breakfast'])) {
$data = self::finalizeAiRecommendPlan($raw);
}
}
if (!$data) {
$tplIdx = self::resolveFallbackTemplateIndex($diagnosisId, $refresh);
$data = GiKnowledge::fallbackDailyMeals($diagnosisId, $tplIdx);
$data['disclaimer'] = '按升糖指数与农家饭硬性规则推荐（午餐≥2样蛋白、淀粉不重复）。';
}
$data['date'] = date('Y-m-d');
$data['cached'] = false;
Cache::set($cacheKey, $data, self::CACHE_TTL);
return ['ok' => true, 'data' => $data];
}
/**
* 询问某食物能不能吃
*
* @return array{ok:bool,error?:string,data?:array}
*/
public static function askFood(int $diagnosisId, string $question): array
{
$question = trim($question);
if ($question === '') {
return ['ok' => false, 'error' => '请输入想咨询的食物'];
}
if (mb_strlen($question) > 80) {
return ['ok' => false, 'error' => '问题过长，请简短描述'];
}
$cacheKey = 'daily_diet_ai_ask:' . md5($diagnosisId . ':' . mb_strtolower($question));
$cached = Cache::get($cacheKey);
if (is_array($cached) && !empty($cached['advice'])) {
$cached['cached'] = true;
return ['ok' => true, 'data' => $cached];
}
$context = self::buildPatientContext($diagnosisId);
$data = null;
if (AiChatService::isEnabled()) {
$data = self::aiAskFood($context['data'] ?? [], $question);
}
if (!$data) {
$data = GiKnowledge::fallbackAsk($question);
}
$data['question'] = $question;
$data['disclaimer'] = '仅供参考，不能替代医嘱。';
$data['cached'] = false;
Cache::set($cacheKey, $data, 3600);
return ['ok' => true, 'data' => $data];
}
/**
* 流式：今日饮食推荐（SSE delta + done）
*
* @param callable(string, array<string, mixed>):void $emit event: delta|done|error
*/
public static function streamDailyRecommend(int $diagnosisId, bool $refresh, callable $emit): void
{
if ($diagnosisId <= 0) {
$emit('error', ['message' => '缺少就诊卡']);
return;
}
$cacheKey = self::recommendCacheKey($diagnosisId);
if (!$refresh) {
$cached = Cache::get($cacheKey);
if (is_array($cached) && !empty($cached['breakfast'])) {
$cached['cached'] = true;
$emit('done', $cached);
return;
}
}
$context = self::buildPatientContext($diagnosisId);
if (!$context['ok']) {
$emit('error', ['message' => $context['error'] ?? '获取档案失败']);
return;
}
$data = null;
$fullText = '';
if (AiChatService::isEnabled()) {
[$system, $user] = self::buildRecommendStreamPrompts($context['data'], $refresh);
$streamRes = AiChatService::streamChat([
['role' => 'system', 'content' => $system],
['role' => 'user', 'content' => $user],
], static function (string $delta) use (&$fullText, $emit): void {
$fullText .= $delta;
$emit('delta', ['text' => $delta, 'buffer' => $fullText]);
}, [
'temperature' => $refresh ? 0.78 : 0.35,
'max_tokens' => 400,
'timeout' => self::AI_STREAM_TIMEOUT_SEC,
]);
if ($streamRes['ok'] && $fullText !== '') {
$parsed = self::parseRecommendPlainText($fullText);
if ($parsed && !empty($parsed['breakfast'])) {
$data = self::finalizeAiRecommendPlan($parsed);
}
}
}
if (!$data) {
$tplIdx = self::resolveFallbackTemplateIndex($diagnosisId, $refresh);
$data = GiKnowledge::fallbackDailyMeals($diagnosisId, $tplIdx);
$data['source'] = 'rule';
$data['disclaimer'] = '按升糖指数与农家饭硬性规则推荐（午餐≥2样蛋白、淀粉不重复）。';
}
$data['date'] = date('Y-m-d');
$data['cached'] = false;
Cache::set($cacheKey, $data, self::CACHE_TTL);
$emit('done', $data);
}
/**
* 流式：能不能吃（SSE delta + done）
*
* @param callable(string, array<string, mixed>):void $emit event: delta|done|error
*/
public static function streamAskFood(int $diagnosisId, string $question, callable $emit): void
{
$question = trim($question);
if ($question === '') {
$emit('error', ['message' => '请输入想咨询的食物']);
return;
}
if (mb_strlen($question) > 80) {
$emit('error', ['message' => '问题过长，请简短描述']);
return;
}
$cacheKey = 'daily_diet_ai_ask:' . md5($diagnosisId . ':' . mb_strtolower($question));
$cached = Cache::get($cacheKey);
if (is_array($cached) && !empty($cached['advice'])) {
$cached['cached'] = true;
$emit('done', $cached);
return;
}
$context = self::buildPatientContext($diagnosisId);
$data = null;
$fullText = '';
if (AiChatService::isEnabled()) {
[$system, $user] = self::buildAskStreamPrompts($context['data'] ?? [], $question);
$streamRes = AiChatService::streamChat([
['role' => 'system', 'content' => $system],
['role' => 'user', 'content' => $user],
], static function (string $delta) use (&$fullText, $emit): void {
$fullText .= $delta;
$emit('delta', ['text' => $delta, 'advice' => $fullText]);
}, [
'temperature' => 0.3,
'max_tokens' => 200,
'timeout' => self::AI_STREAM_TIMEOUT_SEC,
]);
if ($streamRes['ok'] && trim($fullText) !== '') {
$data = self::finalizeAskFromText($context['data'] ?? [], $question, trim($fullText));
}
}
if (!$data) {
$data = GiKnowledge::fallbackAsk($question);
}
$data['question'] = $question;
$data['disclaimer'] = '仅供参考，不能替代医嘱。';
$data['cached'] = false;
Cache::set($cacheKey, $data, 3600);
$emit('done', $data);
}
private static function recommendCacheKey(int $diagnosisId): string
{
return 'daily_diet_ai_rec_v2:' . $diagnosisId . ':' . date('Y-m-d');
}
/** 换一换时轮换规则模板下标（与 GiKnowledge::$mealTemplates 数量一致） */
private static function resolveFallbackTemplateIndex(int $diagnosisId, bool $refresh): int
{
$count = 6;
$cacheKey = 'daily_diet_ai_tpl_idx:' . $diagnosisId . ':' . date('Y-m-d');
$defaultIdx = abs(crc32(date('Y-m-d') . ':' . $diagnosisId)) % $count;
if (!$refresh) {
Cache::set($cacheKey, $defaultIdx, self::CACHE_TTL);
return $defaultIdx;
}
$last = Cache::get($cacheKey);
if ($last === null || $last === false) {
$last = $defaultIdx;
}
$idx = (((int) $last) + 1) % $count;
Cache::set($cacheKey, $idx, self::CACHE_TTL);
return $idx;
}
/**
* @return array{ok:bool,error?:string,data?:array}
*/
private static function buildPatientContext(int $diagnosisId): array
{
$diagnosis = Diagnosis::where('id', $diagnosisId)->where('delete_time', null)->find();
if (!$diagnosis) {
return ['ok' => false, 'error' => '就诊卡不存在'];
}
$row = $diagnosis->toArray();
$gender = (int) ($row['gender'] ?? 0);
$genderText = $gender === 1 ? '男' : ($gender === 0 ? '女' : '未知');
$since = strtotime('-7 days 00:00:00');
$bloodList = BloodRecord::where('diagnosis_id', $diagnosisId)
->where('record_date', '>=', $since)
->where('delete_time', null)
->order('record_date', 'desc')
->limit(7)
->field('record_date,fasting_blood_sugar,postprandial_blood_sugar,other_blood_sugar')
->select()
->toArray();
$bloodSummary = [];
foreach ($bloodList as $b) {
$date = !empty($b['record_date']) ? date('Y-m-d', (int) $b['record_date']) : '';
$parts = [];
if ($b['fasting_blood_sugar'] !== null && $b['fasting_blood_sugar'] !== '') {
$parts[] = '空腹' . $b['fasting_blood_sugar'];
}
if ($b['postprandial_blood_sugar'] !== null && $b['postprandial_blood_sugar'] !== '') {
$parts[] = '餐后' . $b['postprandial_blood_sugar'];
}
if ($b['other_blood_sugar'] !== null && $b['other_blood_sugar'] !== '') {
$parts[] = '其他' . $b['other_blood_sugar'];
}
if ($date && $parts) {
$bloodSummary[] = $date . '：' . implode('，', $parts) . ' mmol/L';
}
}
return [
'ok' => true,
'data' => [
'patient_name' => (string) ($row['patient_name'] ?? ''),
'age' => (int) ($row['age'] ?? 0),
'gender_text' => $genderText,
'blood_recent' => $bloodSummary,
'today' => date('Y-m-d'),
],
];
}
/**
* @return array{0:string,1:string}
*/
private static function buildRecommendPrompts(array $context, bool $refresh = false): array
{
$bloodLine = empty($context['blood_recent'])
? '近7日无血糖记录'
: implode('；', $context['blood_recent']);
$system = <<<SYS
你是村里懂糖尿病饮食的大夫助手，依据「霍大夫升糖指数（GI）」给农村老人推荐一日三餐。输出必须严格可执行。
硬性规则（违反即不合格）：
1. 午餐至少 2 样蛋白质（鱼/鸡鸭/瘦肉/蛋/豆腐/豆干），且午餐蛋白种类数 > 早餐 > 晚餐。
2. 淀粉定义：粥/饭/面/饼/窝头/薯/南瓜。每餐最多 1 种淀粉；早中晚 3 种淀粉必须互不相同。
3. 严禁：白馒头、油条、粘豆包、糯米饭、西瓜、含糖饮料、白稀饭（杂面窝头、玉米碴粥除外）。
4. 低 GI 优先；农村家常；禁止轻食/沙拉/藜麦等词。
5. lunch 字段写法：蛋白菜放前面，淀粉（如有）放最后且注明「小半碗/一个」。
6. 只输出 JSON：
{"breakfast":"...","lunch":"...","dinner":"...","tips":"...","avoid":["...","..."]}
SYS;
$user = sprintf(
"患者：%s，%s，%s岁。日期：%s。近7日血糖：%s。\n\nGI知识：\n%s\n\n农家饭参考：\n%s\n\n请输出严格符合硬性规则的三餐 JSON。",
$context['patient_name'] ?: '大爷大妈',
$context['gender_text'] ?? '',
$context['age'] ?? 0,
$context['today'] ?? date('Y-m-d'),
$bloodLine,
GiKnowledge::summaryText(),
GiKnowledge::ruralMealHints()
);
if ($refresh) {
$user .= "\n\n用户点了「换一换」，请给一套完全不同的农家三餐，编号" . substr(md5((string) microtime(true)), 0, 8) . '。';
}
return [$system, $user];
}
/**
* 流式三餐推荐：纯文本格式，便于逐字输出
*
* @return array{0:string,1:string}
*/
private static function buildRecommendStreamPrompts(array $context, bool $refresh = false): array
{
$bloodLine = empty($context['blood_recent'])
? '近7日无血糖记录'
: implode('；', $context['blood_recent']);
$system = <<<SYS
你是村里懂糖尿病饮食的大夫助手，依据「霍大夫升糖指数（GI）」给农村老人推荐一日三餐。
硬性规则：
1. 午餐至少 2 样蛋白质（鱼/鸡鸭/瘦肉/蛋/豆腐/豆干），且午餐蛋白 > 早餐 > 晚餐。
2. 淀粉（粥/饭/面/饼/窝头/薯/南瓜）每餐最多 1 种，早中晚互不相同。
3. 严禁白馒头、油条、粘豆包、糯米饭、西瓜、含糖饮料。
4. 农村家常饭，禁止轻食/沙拉/藜麦。
严格按下面 5 行格式输出，不要 JSON、不要 markdown、不要多余解释：
早餐：（具体食物）
午餐：（具体食物，蛋白放前）
晚餐：（具体食物）
提示：（一句土话提醒）
少碰：（用顿号隔开，如：白馒头、油条）
SYS;
$user = sprintf(
"患者：%s，%s，%s岁。日期：%s。近7日血糖：%s。\n\nGI摘要：\n%s",
$context['patient_name'] ?: '大爷大妈',
$context['gender_text'] ?? '',
$context['age'] ?? 0,
$context['today'] ?? date('Y-m-d'),
$bloodLine,
mb_substr(GiKnowledge::summaryText(), 0, 380)
);
if ($refresh) {
$user .= "\n\n用户点了「换一换」，请重新给一套完全不同的农家三餐，编号" . substr(md5((string) microtime(true)), 0, 8) . '，别跟常见模板重复。';
}
return [$system, $user];
}
/**
* 解析流式三餐纯文本（兼容 JSON 回退）
*
* @return array<string, mixed>|null
*/
private static function parseRecommendPlainText(string $text): ?array
{
$text = trim($text);
if ($text === '') {
return null;
}
if ($text[0] === '{') {
$json = self::parseJsonObject($text);
if (is_array($json)) {
return $json;
}
}
$map = [
'breakfast' => null,
'lunch' => null,
'dinner' => null,
'tips' => null,
'avoid' => null,
];
if (preg_match('/早餐[：:]\s*(.+)$/mu', $text, $m)) {
$map['breakfast'] = trim(preg_split('/\R/u', $m[1])[0] ?? $m[1]);
}
if (preg_match('/午餐[：:]\s*(.+)$/mu', $text, $m)) {
$map['lunch'] = trim(preg_split('/\R/u', $m[1])[0] ?? $m[1]);
}
if (preg_match('/晚餐[：:]\s*(.+)$/mu', $text, $m)) {
$map['dinner'] = trim(preg_split('/\R/u', $m[1])[0] ?? $m[1]);
}
if (preg_match('/提示[：:]\s*(.+)$/mu', $text, $m)) {
$map['tips'] = trim(preg_split('/\R/u', $m[1])[0] ?? $m[1]);
}
if (preg_match('/少碰[：:]\s*(.+)$/mu', $text, $m)) {
$avoidLine = trim(preg_split('/\R/u', $m[1])[0] ?? $m[1]);
$parts = preg_split('/[、,，;；\s]+/u', $avoidLine) ?: [];
$map['avoid'] = array_values(array_filter(array_map('trim', $parts)));
}
if (empty($map['breakfast'])) {
return null;
}
$out = [
'breakfast' => (string) $map['breakfast'],
'lunch' => (string) ($map['lunch'] ?? ''),
'dinner' => (string) ($map['dinner'] ?? ''),
'tips' => (string) ($map['tips'] ?? ''),
'avoid' => is_array($map['avoid']) ? $map['avoid'] : [],
];
return $out;
}
/**
* 规范化 AI 三餐方案；校验未过也保留 AI 文案（避免流式展示后被规则模板覆盖）
*
* @param array<string, mixed> $parsed
* @return array<string, mixed>
*/
private static function finalizeAiRecommendPlan(array $parsed): array
{
$checked = DietMealValidator::validateAndNormalize($parsed);
$data = $checked['plan'];
$data['source'] = 'ai';
$data['rules_summary'] = DietMealValidator::metaSummary($checked['meta']);
if ($checked['ok']) {
$data['disclaimer'] = 'AI 建议已通过规则校验，仍请结合医嘱与血糖监测。';
} else {
$data['validation_warnings'] = $checked['errors'];
$data['disclaimer'] = 'AI 建议供参考，仍请结合医嘱与血糖监测。';
}
return $data;
}
/**
* @return array{0:string,1:string}
*/
private static function buildAskStreamPrompts(array $context, string $question): array
{
$food = GiKnowledge::extractFoodName($question);
$hit = GiKnowledge::lookupFood($food);
$kbHint = $hit
? "知识库命中：{$hit['food']} → {$hit['level_label']}（{$hit['category']}）"
: '知识库未命中，按 GI 原则用农村常识回答';
$system = <<<SYS
你是村里糖尿病饮食顾问，用升糖指数（GI）回答农村老人「能不能吃某东西」。
用一两句土话直接回答，40字以内，先说能不能吃、再说咋吃/吃多少。不要 JSON、不要 markdown、不要列表。
SYS;
$user = sprintf(
"老人%s，%s。问：%s\n%s\n\nGI摘要：\n%s",
$context['patient_name'] ?? '',
$context['gender_text'] ?? '',
$question,
$kbHint,
GiKnowledge::summaryText()
);
return [$system, $user];
}
/**
* @return array<string, mixed>
*/
private static function finalizeAskFromText(array $context, string $question, string $text): array
{
$food = GiKnowledge::extractFoodName($question);
$hit = GiKnowledge::lookupFood($food);
$data = [
'food' => $food,
'advice' => $text,
'source' => 'ai',
];
if ($hit) {
$data['food'] = $hit['food'];
$data['level'] = $hit['level'];
$data['level_label'] = $hit['level_label'];
$data['portion'] = $hit['level'] === GiKnowledge::LEVEL_HIGH
? '尽量别吃'
: ($hit['level'] === GiKnowledge::LEVEL_MEDIUM ? '少量' : '适量');
} else {
$data['level'] = GiKnowledge::LEVEL_MEDIUM;
$data['level_label'] = '中升糖';
$data['portion'] = '少量';
}
return $data;
}
private static function aiDailyRecommend(array $context, bool $refresh = false): ?array
{
[$system, $user] = self::buildRecommendPrompts($context, $refresh);
$res = AiChatService::chat([
['role' => 'system', 'content' => $system],
['role' => 'user', 'content' => $user],
], [
'temperature' => $refresh ? 0.78 : 0.35,
'max_tokens' => 900,
'timeout' => self::AI_TIMEOUT_SEC,
'response_format' => ['type' => 'json_object'],
]);
if (!$res['ok']) {
return null;
}
$parsed = self::parseJsonObject((string) $res['content']);
if (!$parsed || empty($parsed['breakfast'])) {
return null;
}
$parsed['avoid'] = is_array($parsed['avoid'] ?? null) ? $parsed['avoid'] : [];
return $parsed;
}
/**
* @param array $context
* @return array|null
*/
private static function aiAskFood(array $context, string $question): ?array
{
$food = GiKnowledge::extractFoodName($question);
$hit = GiKnowledge::lookupFood($food);
$system = <<<SYS
你是村里糖尿病饮食顾问，用升糖指数（GI）回答农村老人「能不能吃某东西」。
只输出 JSON：{"food":"食物名","level":"low|medium|high","level_label":"低升糖|中升糖|高升糖","advice":"40字内土话建议","portion":"咋吃、吃多少"}
level：low≤55，medium 56-69，high≥70。advice 要口语化，别文绉绉。
SYS;
$kbHint = $hit
? "知识库命中：{$hit['food']} → {$hit['level_label']}（{$hit['category']}）"
: '知识库未命中，按 GI 原则用农村常识回答';
$user = sprintf(
"老人%s，%s。问：%s\n%s\n\nGI摘要：\n%s\n\n农家饭原则：\n%s",
$context['patient_name'] ?? '',
$context['gender_text'] ?? '',
$question,
$kbHint,
GiKnowledge::summaryText(),
GiKnowledge::ruralMealHints()
);
$res = AiChatService::chat([
['role' => 'system', 'content' => $system],
['role' => 'user', 'content' => $user],
], [
'temperature' => 0.3,
'max_tokens' => 400,
'timeout' => self::AI_TIMEOUT_SEC,
'response_format' => ['type' => 'json_object'],
]);
if (!$res['ok']) {
return null;
}
$parsed = self::parseJsonObject((string) $res['content']);
if (!$parsed || empty($parsed['advice'])) {
return null;
}
if ($hit) {
$parsed['food'] = $hit['food'];
$parsed['level'] = $hit['level'];
$parsed['level_label'] = $hit['level_label'];
if (empty($parsed['portion'])) {
$parsed['portion'] = $hit['level'] === GiKnowledge::LEVEL_HIGH ? '尽量别吃' : ($hit['level'] === GiKnowledge::LEVEL_MEDIUM ? '少量' : '适量');
}
}
$parsed['source'] = 'ai';
if (empty($parsed['food'])) {
$parsed['food'] = $food;
}
return $parsed;
}
/**
* @return array<string, mixed>|null
*/
private static function parseJsonObject(string $content): ?array
{
$content = trim($content);
if ($content === '') {
return null;
}
if ($content[0] !== '{') {
if (preg_match('/\{[\s\S]*\}/', $content, $m)) {
$content = $m[0];
}
}
$decoded = json_decode($content, true);
return is_array($decoded) ? $decoded : null;
}
}