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import { ref, computed } from 'vue'
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import { requestAiStream, parsePartialDietPlainText } from '../utils/aiStreamRequest.js'
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const DIET_AI_PREFILL_KEY = 'tongji_diet_ai_prefill'
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const emptyDietAiRecommend = () => ({
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breakfast: '',
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lunch: '',
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dinner: '',
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tips: '',
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avoid: [],
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analysis: [],
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exercise: null,
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disclaimer: '',
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rules_summary: '',
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source: '',
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date: ''
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})
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/** AI 饮食助手（今日推荐 + 能不能吃） */
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export function useDietAi(proxy, { diagnosisId, showUserToast, formatUserMessage }) {
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const dietAiRecommend = ref(emptyDietAiRecommend())
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const dietAiLoading = ref(false)
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const dietAiStreaming = ref(false)
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const dietAiReplacing = ref(false)
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const dietAiStreamField = ref('')
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let dietStreamBuffer = ''
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const dietAiAskText = ref('')
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const dietAiAsking = ref(false)
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const dietAiAskResult = ref({ advice: '', level: '', level_label: '', portion: '', food: '' })
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const hasDietAiMealContent = computed(() => {
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const r = dietAiRecommend.value
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return !!(r.breakfast || r.lunch || r.dinner || r.tips)
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})
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function detectDietStreamField(text) {
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const tail = String(text || '').match(/(?:^|\n)(早餐|午餐|晚餐|提示|少碰)[：:]\s*([^\n]*)$/)
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if (!tail) return 'breakfast'
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const map = { '早餐': 'breakfast', '午餐': 'lunch', '晚餐': 'dinner', '提示': 'tips', '少碰': 'tips' }
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return map[tail[1]] || 'breakfast'
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}
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function mergePartialDietFromStream() {
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const partial = parsePartialDietPlainText(dietStreamBuffer)
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const next = { ...dietAiRecommend.value }
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for (const key of ['breakfast', 'lunch', 'dinner', 'tips']) {
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if (partial[key] != null) next[key] = partial[key]
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}
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if (Array.isArray(partial.avoid)) next.avoid = partial.avoid
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dietAiRecommend.value = next
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dietAiStreamField.value = detectDietStreamField(dietStreamBuffer)
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}
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function applyDietRecommendPayload(payload) {
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if (!payload) return
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const prevAnalysis = dietAiRecommend.value.analysis
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const prevExercise = dietAiRecommend.value.exercise
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dietAiRecommend.value = {
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...emptyDietAiRecommend(),
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...payload,
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avoid: Array.isArray(payload.avoid) ? payload.avoid : [],
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analysis: Array.isArray(payload.analysis) && payload.analysis.length
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? payload.analysis
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: (Array.isArray(prevAnalysis) ? prevAnalysis : []),
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exercise: (payload.exercise && typeof payload.exercise === 'object')
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? payload.exercise
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: (prevExercise || null)
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}
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}
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function resolveDietDonePayload(payload) {
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if (!payload) return payload
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if (payload.source !== 'rule' || !dietStreamBuffer) return payload
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const streamed = parsePartialDietPlainText(dietStreamBuffer)
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if (!streamed.breakfast) return payload
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return {
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...emptyDietAiRecommend(),
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...payload,
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breakfast: streamed.breakfast,
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lunch: streamed.lunch || payload.lunch || '',
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dinner: streamed.dinner || payload.dinner || '',
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tips: streamed.tips || payload.tips || '',
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avoid: (Array.isArray(streamed.avoid) && streamed.avoid.length) ? streamed.avoid : (payload.avoid || []),
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source: 'ai',
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disclaimer: 'AI 建议供参考，仍请结合医嘱与血糖监测。'
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}
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}
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function onDietAiStreamEvent(event, payload) {
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if (event === 'analysis') {
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if (Array.isArray(payload?.analysis)) {
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dietAiRecommend.value = { ...dietAiRecommend.value, analysis: payload.analysis }
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}
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} else if (event === 'exercise') {
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if (payload?.exercise && typeof payload.exercise === 'object') {
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dietAiRecommend.value = { ...dietAiRecommend.value, exercise: payload.exercise }
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}
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} else if (event === 'delta') {
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dietAiStreaming.value = true
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if (payload.buffer != null) {
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dietStreamBuffer = payload.buffer
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} else {
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dietStreamBuffer += payload.text || ''
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}
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mergePartialDietFromStream()
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} else if (event === 'done') {
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applyDietRecommendPayload(resolveDietDonePayload(payload))
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dietStreamBuffer = ''
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dietAiStreamField.value = ''
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} else if (event === 'error') {
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showUserToast(formatUserMessage(payload?.message, '饮食建议加载失败'))
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}
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}
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async function fetchDietAiRecommendFallback(refresh) {
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const res = await proxy.apiUrl({
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url: '/api/tcm/dailyDietAiRecommend',
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method: 'GET',
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timeout: 35000,
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data: {
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diagnosis_id: diagnosisId.value,
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refresh: refresh ? 1 : 0,
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...(refresh ? { _t: Date.now() } : {})
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}
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}, false)
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if (res?.code === 1 && res.data) {
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applyDietRecommendPayload(res.data)
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} else if (res?.msg) {
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showUserToast(res.msg)
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}
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}
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async function fetchDietAiRecommend(refresh = false) {
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if (!diagnosisId.value || dietAiLoading.value) return
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dietAiLoading.value = true
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dietAiStreaming.value = false
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dietAiReplacing.value = !!refresh
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dietStreamBuffer = ''
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dietAiStreamField.value = ''
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if (refresh) {
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applyDietRecommendPayload(emptyDietAiRecommend())
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}
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try {
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await requestAiStream({
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baseUrl: proxy.$url,
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url: '/api/tcm/dailyDietAiRecommendStream',
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method: 'GET',
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data: {
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diagnosis_id: diagnosisId.value,
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refresh: refresh ? 1 : 0,
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...(refresh ? { _t: Date.now() } : {})
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},
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onEvent: onDietAiStreamEvent,
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fallback: () => fetchDietAiRecommendFallback(refresh)
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})
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} catch (e) {
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try {
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await fetchDietAiRecommendFallback(refresh)
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} catch (e2) {
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showUserToast('饮食建议加载失败')
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}
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} finally {
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dietAiLoading.value = false
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dietAiStreaming.value = false
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dietAiReplacing.value = false
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dietAiStreamField.value = ''
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}
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}
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function refreshDietAiRecommend() {
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if (dietAiLoading.value) return
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fetchDietAiRecommend(true)
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}
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async function askDietAiFoodFallback(q) {
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const res = await proxy.apiUrl({
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url: '/api/tcm/dailyDietAiAsk',
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method: 'POST',
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timeout: 35000,
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data: {
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diagnosis_id: diagnosisId.value,
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question: q
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}
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}, false)
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if (res?.code === 1 && res.data) {
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dietAiAskResult.value = {
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advice: res.data.advice || '',
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level: res.data.level || '',
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level_label: res.data.level_label || '',
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portion: res.data.portion || '',
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food: res.data.food || q
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}
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} else {
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showUserToast(formatUserMessage(res?.msg, '咨询失败'))
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}
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}
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async function askDietAiFood() {
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const q = String(dietAiAskText.value || '').trim()
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if (!q) {
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showUserToast('请输入想咨询的食物')
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return
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}
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if (!diagnosisId.value) return
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dietAiAsking.value = true
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dietAiAskResult.value = { advice: '', level: '', level_label: '', portion: '', food: '' }
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try {
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await requestAiStream({
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baseUrl: proxy.$url,
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url: '/api/tcm/dailyDietAiAskStream',
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method: 'POST',
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data: {
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diagnosis_id: diagnosisId.value,
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question: q
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},
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onEvent: (event, payload) => {
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if (event === 'start' && !dietAiAskResult.value.advice) {
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dietAiAskResult.value = { ...dietAiAskResult.value, advice: payload.message || '正在想…' }
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} else if (event === 'delta') {
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dietAiAskResult.value = {
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...dietAiAskResult.value,
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advice: payload.advice || dietAiAskResult.value.advice
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}
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} else if (event === 'done') {
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dietAiAskResult.value = {
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advice: payload.advice || '',
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level: payload.level || '',
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level_label: payload.level_label || '',
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portion: payload.portion || '',
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food: payload.food || q
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}
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} else if (event === 'error') {
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showUserToast(formatUserMessage(payload?.message, '咨询失败'))
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}
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},
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fallback: () => askDietAiFoodFallback(q)
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})
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} catch (e) {
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try {
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await askDietAiFoodFallback(q)
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} catch (e2) {
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showUserToast('网络异常，请稍后再试')
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}
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} finally {
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dietAiAsking.value = false
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}
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}
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function onDietAiAskInput(e) {
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dietAiAskText.value = e?.detail?.value ?? ''
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}
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function saveDietPrefillToStorage() {
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const r = dietAiRecommend.value
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if (!r.breakfast) return
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try {
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uni.setStorageSync(DIET_AI_PREFILL_KEY, {
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breakfast: r.breakfast,
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lunch: r.lunch,
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dinner: r.dinner,
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tips: r.tips || ''
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})
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} catch (e) {}
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}
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function goMoreDietForm(withPrefill = false) {
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if (withPrefill) saveDietPrefillToStorage()
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uni.navigateTo({ url: '/tongji/pages/more?openDiet=1' })
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}
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async function applyDietAiToForm() {
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if (!dietAiRecommend.value.breakfast) {
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await fetchDietAiRecommend(false)
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}
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goMoreDietForm(true)
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}
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function openDietForm() {
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goMoreDietForm(false)
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}
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return {
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dietAiRecommend,
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dietAiLoading,
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dietAiStreaming,
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dietAiReplacing,
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dietAiStreamField,
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dietAiAskText,
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dietAiAsking,
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dietAiAskResult,
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hasDietAiMealContent,
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fetchDietAiRecommend,
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refreshDietAiRecommend,
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askDietAiFood,
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onDietAiAskInput,
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applyDietAiToForm,
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openDietForm
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}
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}
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/** more 页打开饮食表单时读取并清除预填 */
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export function consumeDietAiPrefill() {
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try {
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const data = uni.getStorageSync(DIET_AI_PREFILL_KEY)
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uni.removeStorageSync(DIET_AI_PREFILL_KEY)
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if (data && typeof data === 'object' && data.breakfast) return data
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} catch (e) {}
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return null
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}
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