87 lines
2.3 KiB
JavaScript
87 lines
2.3 KiB
JavaScript
export function extractZillowStructuredPhotoCandidatesFromNextDataScript(scriptText) {
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if (typeof scriptText !== "string" || !scriptText.trim()) {
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return [];
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}
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let nextData;
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try {
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nextData = JSON.parse(scriptText);
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} catch {
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return [];
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}
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const cacheText = nextData?.props?.pageProps?.componentProps?.gdpClientCache;
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if (typeof cacheText !== "string" || !cacheText.trim()) {
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return [];
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}
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let cache;
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try {
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cache = JSON.parse(cacheText);
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} catch {
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return [];
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}
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const out = [];
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for (const entry of Object.values(cache)) {
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const photos = entry?.property?.responsivePhotos;
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if (!Array.isArray(photos)) continue;
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for (const photo of photos) {
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if (typeof photo?.url === "string" && photo.url) {
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out.push({ url: photo.url });
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continue;
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}
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const mixedSources = photo?.mixedSources;
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if (!mixedSources || typeof mixedSources !== "object") continue;
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let best = null;
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for (const variants of Object.values(mixedSources)) {
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if (!Array.isArray(variants)) continue;
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for (const variant of variants) {
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if (typeof variant?.url !== "string" || !variant.url) continue;
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const width = Number(variant.width || 0);
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if (!best || width > best.width) {
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best = { url: variant.url, width };
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}
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}
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}
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if (best) {
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out.push(best);
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}
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}
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}
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return out;
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}
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const DEFAULT_MINIMUM_TRUSTED_STRUCTURED_PHOTO_COUNT = 12;
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export function shouldUseStructuredZillowPhotos(candidates, options = {}) {
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const count = Array.isArray(candidates) ? candidates.length : 0;
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const normalizedOptions =
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typeof options === "number"
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? { expectedPhotoCount: options }
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: options && typeof options === "object"
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? options
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: {};
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const expectedPhotoCount = Number(normalizedOptions.expectedPhotoCount || 0);
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const fallbackPhotoCount = Number(normalizedOptions.fallbackPhotoCount || 0);
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const minimumTrustCount = Number(
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normalizedOptions.minimumTrustCount || DEFAULT_MINIMUM_TRUSTED_STRUCTURED_PHOTO_COUNT
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);
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if (Number.isFinite(expectedPhotoCount) && expectedPhotoCount > 0) {
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return count >= expectedPhotoCount;
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}
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if (Number.isFinite(fallbackPhotoCount) && fallbackPhotoCount > 0) {
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return count >= fallbackPhotoCount;
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}
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return count >= minimumTrustCount;
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}
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