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import { generateImage } from '@shared/api/DataApi'; |
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import { downloadImage } from '@shared/api/wp'; |
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import { |
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DEFAULT_IMAGE_SEARCH, |
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resolveImageSearch, |
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} from '@shared/lib/image-search-defaults'; |
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import { fetchImages } from '@shared/lib/unsplash'; |
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import { useImageGenerationStore } from '@shared/state/generate-images'; |
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import { useUnsplashCacheStore } from '@shared/state/unsplash-cache'; |
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import { useCallback, useRef, useState } from '@wordpress/element'; |
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import { __ } from '@wordpress/i18n'; |
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import useSWRImmutable from 'swr/immutable'; |
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|
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const SIZES = [ |
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['1024x1024', 1], |
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['1536x1024', 3 / 2], |
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['1024x1536', 2 / 3], |
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['1792x1024', 16 / 9], |
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['1024x1792', 9 / 16], |
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]; |
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|
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// The model renders one of five ratios; the wrong one gets cropped by |
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// object-cover, and 2k costs seconds a slot this size can't show. |
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export const targetFor = (el) => { |
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const { width, height } = el?.getBoundingClientRect?.() ?? {}; |
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if (!width || !height) return {}; |
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const ratio = width / height; |
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const [size] = SIZES.reduce((best, entry) => |
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Math.abs(entry[1] - ratio) < Math.abs(best[1] - ratio) ? entry : best, |
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); |
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return { size, quality: width > 1024 ? 'medium' : 'low' }; |
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}; |
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|
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// onUrlReady is awaited so surfaces can preload/preview before an url turns ready. |
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export const useImageAcquisition = ({ source, onUrlReady } = {}) => { |
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const [states, setStates] = useState({}); |
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const { imageCredits, updateImageCredits, subtractOneCredit } = |
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useImageGenerationStore(); |
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const statesRef = useRef(states); |
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statesRef.current = states; |
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const onUrlReadyRef = useRef(onUrlReady); |
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onUrlReadyRef.current = onUrlReady; |
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|
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const setItemState = useCallback( |
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(key, state) => setStates((states) => ({ ...states, [key]: state })), |
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[], |
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); |
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|
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const generate = useCallback( |
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async (key, prompt, target = {}) => { |
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if ( |
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Number(useImageGenerationStore.getState().imageCredits.remaining) === 0 |
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) { |
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setItemState(key, { |
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status: 'error', |
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message: __( |
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"You've run out of daily image credits.", |
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'extendify-local', |
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), |
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}); |
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return; |
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} |
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setItemState(key, { status: 'generating' }); |
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subtractOneCredit(); |
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try { |
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const { imageCredits: credits, images } = await generateImage({ |
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prompt, |
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source, |
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quality: 'low', |
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...target, |
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}); |
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updateImageCredits(credits); |
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const url = images?.[0]?.url; |
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if (!url) throw new Error(__('No image returned', 'extendify-local')); |
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await onUrlReadyRef.current?.(key, url); |
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setItemState(key, { |
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status: 'ready', |
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url, |
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alt: images[0].alt ?? prompt, |
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}); |
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} catch (error) { |
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if (error?.imageCredits) updateImageCredits(error.imageCredits); |
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setItemState(key, { |
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status: 'error', |
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message: |
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error?.message || |
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__('An unknown error occurred.', 'extendify-local'), |
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}); |
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} |
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}, |
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[setItemState, subtractOneCredit, updateImageCredits, source], |
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); |
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|
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const attachImage = useCallback( |
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(key, image) => setItemState(key, { status: 'ready', image }), |
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[setItemState], |
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); |
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|
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const pickUnsplash = useCallback( |
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async (key, photo) => { |
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const url = photo?.urls?.regular; |
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if (!url) return; |
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try { |
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await onUrlReadyRef.current?.(key, url); |
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} catch (error) { |
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setItemState(key, { |
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status: 'error', |
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message: |
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error?.message || |
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__('An unknown error occurred.', 'extendify-local'), |
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}); |
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return; |
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} |
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setItemState(key, { |
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status: 'ready', |
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url, |
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photoId: photo.id, |
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requestId: photo.requestMetadata?.id ?? null, |
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}); |
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}, |
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[setItemState], |
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); |
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|
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const markAwaiting = useCallback( |
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(key) => setItemState(key, { status: 'awaiting' }), |
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[setItemState], |
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); |
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|
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// Media picks are already attachments; generated/Unsplash urls are off-site until imported. |
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const resolveImage = useCallback(async (key, { disclose = false } = {}) => { |
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const state = statesRef.current[key]; |
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if (state?.image) return state.image; |
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if (!state?.url) return null; |
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if (state.photoId) { |
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return await downloadImage( |
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state.requestId, |
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state.url, |
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'unsplash', |
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state.photoId, |
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); |
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} |
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return await downloadImage(null, state.url, 'ai-generated', null, { |
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alt: state.alt, |
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disclose, |
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}); |
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}, []); |
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|
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return { |
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states, |
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imageCredits, |
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generate, |
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attachImage, |
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pickUnsplash, |
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markAwaiting, |
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resolveImage, |
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}; |
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}; |
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|
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const searchImages = async (search, source) => { |
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const cache = useUnsplashCacheStore.getState(); |
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if ( |
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search === DEFAULT_IMAGE_SEARCH && |
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!cache.isEmpty() && |
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!cache.hasExpired() |
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) { |
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return cache.images; |
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} |
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return await fetchImages(resolveImageSearch(search), source); |
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}; |
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|
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export const useUnsplashSearch = (search, source = null) => { |
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const key = search || DEFAULT_IMAGE_SEARCH; |
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const { data, error } = useSWRImmutable(key, () => searchImages(key, source)); |
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return { data, error, loading: !data && !error }; |
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}; |
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|
