| 1 | /** |
| 2 | * useDraftGenerationPricing - AI 草稿生成定价数据 Hook |
| 3 | * 复用 ai/draft-generation/pricing 接口，提供模块级缓存与防重复请求 |
| 4 | */ |
| 5 | |
| 6 | import type { DraftGenerationPricingVo } from '@/api/ai/ai.types' |
| 7 | import { useEffect, useState } from 'react' |
| 8 | import { apiGetDraftGenerationPricing } from '@/api/ai/ai.api' |
| 9 | |
| 10 | interface DraftGenerationPricingCache { |
| 11 | data: DraftGenerationPricingVo | null |
| 12 | promise: Promise<DraftGenerationPricingVo | null> | null |
| 13 | } |
| 14 | |
| 15 | const globalPricingCache = globalThis as typeof globalThis & { |
| 16 | __draftGenerationPricingCache?: DraftGenerationPricingCache |
| 17 | } |
| 18 | |
| 19 | function normalizePricingData(data: DraftGenerationPricingVo): DraftGenerationPricingVo { |
| 20 | return { |
| 21 | ...data, |
| 22 | imageModels: (data.imageModels ?? []).map(model => ({ |
| 23 | ...model, |
| 24 | pricing: model.pricing ?? [], |
| 25 | tags: model.tags ?? [], |
| 26 | })), |
| 27 | videoModels: (data.videoModels ?? []).map(model => ({ |
| 28 | ...model, |
| 29 | modes: model.modes ?? [], |
| 30 | resolutions: model.resolutions ?? [], |
| 31 | durations: model.durations ?? [], |
| 32 | aspectRatios: model.aspectRatios ?? [], |
| 33 | tags: model.tags ?? [], |
| 34 | defaults: model.defaults ?? {}, |
| 35 | pricing: model.pricing ?? [], |
| 36 | })), |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | function getPricingCache() { |
| 41 | if (!globalPricingCache.__draftGenerationPricingCache) { |
| 42 | globalPricingCache.__draftGenerationPricingCache = { |
| 43 | data: null, |
| 44 | promise: null, |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | return globalPricingCache.__draftGenerationPricingCache |
| 49 | } |
| 50 | |
| 51 | async function fetchPricing(): Promise<DraftGenerationPricingVo | null> { |
| 52 | const cache = getPricingCache() |
| 53 | if (cache.data) { |
| 54 | return cache.data |
| 55 | } |
| 56 | if (cache.promise) { |
| 57 | return cache.promise |
| 58 | } |
| 59 | |
| 60 | cache.promise = apiGetDraftGenerationPricing() |
| 61 | .then((res) => { |
| 62 | if (res?.data) { |
| 63 | cache.data = normalizePricingData(res.data) |
| 64 | return cache.data |
| 65 | } |
| 66 | return null |
| 67 | }) |
| 68 | .catch(() => { |
| 69 | return null |
| 70 | }) |
| 71 | .finally(() => { |
| 72 | cache.promise = null |
| 73 | }) |
| 74 | |
| 75 | return cache.promise |
| 76 | } |
| 77 | |
| 78 | export function useDraftGenerationPricing() { |
| 79 | const [pricingData, setPricingData] = useState<DraftGenerationPricingVo | null>(() => getPricingCache().data) |
| 80 | const [isLoading, setIsLoading] = useState(() => !getPricingCache().data) |
| 81 | const [error, setError] = useState(false) |
| 82 | |
| 83 | useEffect(() => { |
| 84 | const cache = getPricingCache() |
| 85 | if (cache.data) { |
| 86 | setPricingData(cache.data) |
| 87 | setIsLoading(false) |
| 88 | return |
| 89 | } |
| 90 | |
| 91 | let cancelled = false |
| 92 | setIsLoading(true) |
| 93 | |
| 94 | fetchPricing().then((data) => { |
| 95 | if (cancelled) { |
| 96 | return |
| 97 | } |
| 98 | |
| 99 | if (data) { |
| 100 | setPricingData(data) |
| 101 | } |
| 102 | else { |
| 103 | setError(true) |
| 104 | } |
| 105 | |
| 106 | setIsLoading(false) |
| 107 | }) |
| 108 | |
| 109 | return () => { |
| 110 | cancelled = true |
| 111 | } |
| 112 | }, []) |
| 113 | |
| 114 | return { pricingData, isLoading, error } |
| 115 | } |
| 116 |