import { AppRenderSpan, NextNodeServerSpan } from './trace/constants';
import { getTracer, SpanKind } from './trace/tracer';
import { CACHE_ONE_YEAR, INFINITE_CACHE, NEXT_CACHE_TAG_MAX_ITEMS, NEXT_CACHE_TAG_MAX_LENGTH } from '../../lib/constants';
import { markCurrentScopeAsDynamic } from '../app-render/dynamic-rendering';
import { makeHangingPromise } from '../dynamic-rendering-utils';
import { createDedupeFetch } from './dedupe-fetch';
import { CachedRouteKind, IncrementalCacheKind } from '../response-cache';
import { waitAtLeastOneReactRenderTask } from '../../lib/scheduler';
import { cloneResponse } from './clone-response';
const isEdgeRuntime = process.env.NEXT_RUNTIME === 'edge';
export const NEXT_PATCH_SYMBOL = Symbol.for('next-patch');
function isFetchPatched() {
    return globalThis[NEXT_PATCH_SYMBOL] === true;
}
export function validateRevalidate(revalidateVal, route) {
    try {
        let normalizedRevalidate = undefined;
        if (revalidateVal === false) {
            normalizedRevalidate = INFINITE_CACHE;
        } else if (typeof revalidateVal === 'number' && !isNaN(revalidateVal) && revalidateVal > -1) {
            normalizedRevalidate = revalidateVal;
        } else if (typeof revalidateVal !== 'undefined') {
            throw new Error(`Invalid revalidate value "${revalidateVal}" on "${route}", must be a non-negative number or false`);
        }
        return normalizedRevalidate;
    } catch (err) {
        // handle client component error from attempting to check revalidate value
        if (err instanceof Error && err.message.includes('Invalid revalidate')) {
            throw err;
        }
        return undefined;
    }
}
export function validateTags(tags, description) {
    const validTags = [];
    const invalidTags = [];
    for(let i = 0; i < tags.length; i++){
        const tag = tags[i];
        if (typeof tag !== 'string') {
            invalidTags.push({
                tag,
                reason: 'invalid type, must be a string'
            });
        } else if (tag.length > NEXT_CACHE_TAG_MAX_LENGTH) {
            invalidTags.push({
                tag,
                reason: `exceeded max length of ${NEXT_CACHE_TAG_MAX_LENGTH}`
            });
        } else {
            validTags.push(tag);
        }
        if (validTags.length > NEXT_CACHE_TAG_MAX_ITEMS) {
            console.warn(`Warning: exceeded max tag count for ${description}, dropped tags:`, tags.slice(i).join(', '));
            break;
        }
    }
    if (invalidTags.length > 0) {
        console.warn(`Warning: invalid tags passed to ${description}: `);
        for (const { tag, reason } of invalidTags){
            console.log(`tag: "${tag}" ${reason}`);
        }
    }
    return validTags;
}
function trackFetchMetric(workStore, ctx) {
    var _workStore_requestEndedState;
    // If the static generation store is not available, we can't track the fetch
    if (!workStore) return;
    if ((_workStore_requestEndedState = workStore.requestEndedState) == null ? void 0 : _workStore_requestEndedState.ended) return;
    const isDebugBuild = (!!process.env.NEXT_DEBUG_BUILD || process.env.NEXT_SSG_FETCH_METRICS === '1') && workStore.isStaticGeneration;
    const isDevelopment = process.env.NODE_ENV === 'development';
    if (// The only time we want to track fetch metrics outside of development is when
    // we are performing a static generation & we are in debug mode.
    !isDebugBuild && !isDevelopment) {
        return;
    }
    workStore.fetchMetrics ??= [];
    workStore.fetchMetrics.push({
        ...ctx,
        end: performance.timeOrigin + performance.now(),
        idx: workStore.nextFetchId || 0
    });
}
export function createPatchedFetcher(originFetch, { workAsyncStorage, workUnitAsyncStorage }) {
    // Create the patched fetch function. We don't set the type here, as it's
    // verified as the return value of this function.
    const patched = async (input, init)=>{
        var _init_method, _init_next;
        let url;
        try {
            url = new URL(input instanceof Request ? input.url : input);
            url.username = '';
            url.password = '';
        } catch  {
            // Error caused by malformed URL should be handled by native fetch
            url = undefined;
        }
        const fetchUrl = (url == null ? void 0 : url.href) ?? '';
        const method = (init == null ? void 0 : (_init_method = init.method) == null ? void 0 : _init_method.toUpperCase()) || 'GET';
        // Do create a new span trace for internal fetches in the
        // non-verbose mode.
        const isInternal = (init == null ? void 0 : (_init_next = init.next) == null ? void 0 : _init_next.internal) === true;
        const hideSpan = process.env.NEXT_OTEL_FETCH_DISABLED === '1';
        // We don't track fetch metrics for internal fetches
        // so it's not critical that we have a start time, as it won't be recorded.
        // This is to workaround a flaky issue where performance APIs might
        // not be available and will require follow-up investigation.
        const fetchStart = isInternal ? undefined : performance.timeOrigin + performance.now();
        const workStore = workAsyncStorage.getStore();
        const workUnitStore = workUnitAsyncStorage.getStore();
        // During static generation we track cache reads so we can reason about when they fill
        let cacheSignal = workUnitStore && workUnitStore.type === 'prerender' ? workUnitStore.cacheSignal : null;
        if (cacheSignal) {
            cacheSignal.beginRead();
        }
        const result = getTracer().trace(isInternal ? NextNodeServerSpan.internalFetch : AppRenderSpan.fetch, {
            hideSpan,
            kind: SpanKind.CLIENT,
            spanName: [
                'fetch',
                method,
                fetchUrl
            ].filter(Boolean).join(' '),
            attributes: {
                'http.url': fetchUrl,
                'http.method': method,
                'net.peer.name': url == null ? void 0 : url.hostname,
                'net.peer.port': (url == null ? void 0 : url.port) || undefined
            }
        }, async ()=>{
            var _getRequestMeta;
            // If this is an internal fetch, we should not do any special treatment.
            if (isInternal) {
                return originFetch(input, init);
            }
            // If the workStore is not available, we can't do any
            // special treatment of fetch, therefore fallback to the original
            // fetch implementation.
            if (!workStore) {
                return originFetch(input, init);
            }
            // We should also fallback to the original fetch implementation if we
            // are in draft mode, it does not constitute a static generation.
            if (workStore.isDraftMode) {
                return originFetch(input, init);
            }
            const isRequestInput = input && typeof input === 'object' && typeof input.method === 'string';
            const getRequestMeta = (field)=>{
                // If request input is present but init is not, retrieve from input first.
                const value = init == null ? void 0 : init[field];
                return value || (isRequestInput ? input[field] : null);
            };
            let finalRevalidate = undefined;
            const getNextField = (field)=>{
                var _init_next, _init_next1, _input_next;
                return typeof (init == null ? void 0 : (_init_next = init.next) == null ? void 0 : _init_next[field]) !== 'undefined' ? init == null ? void 0 : (_init_next1 = init.next) == null ? void 0 : _init_next1[field] : isRequestInput ? (_input_next = input.next) == null ? void 0 : _input_next[field] : undefined;
            };
            // RequestInit doesn't keep extra fields e.g. next so it's
            // only available if init is used separate
            let currentFetchRevalidate = getNextField('revalidate');
            const tags = validateTags(getNextField('tags') || [], `fetch ${input.toString()}`);
            const revalidateStore = workUnitStore && (workUnitStore.type === 'cache' || workUnitStore.type === 'prerender' || workUnitStore.type === 'prerender-ppr' || workUnitStore.type === 'prerender-legacy') ? workUnitStore : undefined;
            if (revalidateStore) {
                if (Array.isArray(tags)) {
                    // Collect tags onto parent caches or parent prerenders.
                    const collectedTags = revalidateStore.tags ?? (revalidateStore.tags = []);
                    for (const tag of tags){
                        if (!collectedTags.includes(tag)) {
                            collectedTags.push(tag);
                        }
                    }
                }
            }
            const implicitTags = !workUnitStore || workUnitStore.type === 'unstable-cache' ? [] : workUnitStore.implicitTags;
            // Inside unstable-cache we treat it the same as force-no-store on the
            // page.
            const pageFetchCacheMode = workUnitStore && workUnitStore.type === 'unstable-cache' ? 'force-no-store' : workStore.fetchCache;
            const isUsingNoStore = !!workStore.isUnstableNoStore;
            let currentFetchCacheConfig = getRequestMeta('cache');
            let cacheReason = '';
            let cacheWarning;
            if (typeof currentFetchCacheConfig === 'string' && typeof currentFetchRevalidate !== 'undefined') {
                // If the revalidate value conflicts with the cache value, we should warn the user and unset the conflicting values.
                const isConflictingRevalidate = // revalidate: 0 and cache: force-cache
                currentFetchCacheConfig === 'force-cache' && currentFetchRevalidate === 0 || // revalidate: >0 or revalidate: false and cache: no-store
                currentFetchCacheConfig === 'no-store' && (currentFetchRevalidate > 0 || currentFetchRevalidate === false);
                if (isConflictingRevalidate) {
                    cacheWarning = `Specified "cache: ${currentFetchCacheConfig}" and "revalidate: ${currentFetchRevalidate}", only one should be specified.`;
                    currentFetchCacheConfig = undefined;
                    currentFetchRevalidate = undefined;
                }
            }
            const hasExplicitFetchCacheOptOut = // fetch config itself signals not to cache
            currentFetchCacheConfig === 'no-cache' || currentFetchCacheConfig === 'no-store' || // the fetch isn't explicitly caching and the segment level cache config signals not to cache
            // note: `pageFetchCacheMode` is also set by being in an unstable_cache context.
            pageFetchCacheMode === 'force-no-store' || pageFetchCacheMode === 'only-no-store';
            // If no explicit fetch cache mode is set, but dynamic = `force-dynamic` is set,
            // we shouldn't consider caching the fetch. This is because the `dynamic` cache
            // is considered a "top-level" cache mode, whereas something like `fetchCache` is more
            // fine-grained. Top-level modes are responsible for setting reasonable defaults for the
            // other configurations.
            const noFetchConfigAndForceDynamic = !pageFetchCacheMode && !currentFetchCacheConfig && !currentFetchRevalidate && workStore.forceDynamic;
            if (// force-cache was specified without a revalidate value. We set the revalidate value to false
            // which will signal the cache to not revalidate
            currentFetchCacheConfig === 'force-cache' && typeof currentFetchRevalidate === 'undefined') {
                currentFetchRevalidate = false;
            } else if (// if we are inside of "use cache"/"unstable_cache"
            // we shouldn't set the revalidate to 0 as it's overridden
            // by the cache context
            (workUnitStore == null ? void 0 : workUnitStore.type) !== 'cache' && (hasExplicitFetchCacheOptOut || noFetchConfigAndForceDynamic)) {
                currentFetchRevalidate = 0;
            }
            if (currentFetchCacheConfig === 'no-cache' || currentFetchCacheConfig === 'no-store') {
                cacheReason = `cache: ${currentFetchCacheConfig}`;
            }
            finalRevalidate = validateRevalidate(currentFetchRevalidate, workStore.route);
            const _headers = getRequestMeta('headers');
            const initHeaders = typeof (_headers == null ? void 0 : _headers.get) === 'function' ? _headers : new Headers(_headers || {});
            const hasUnCacheableHeader = initHeaders.get('authorization') || initHeaders.get('cookie');
            const isUnCacheableMethod = ![
                'get',
                'head'
            ].includes(((_getRequestMeta = getRequestMeta('method')) == null ? void 0 : _getRequestMeta.toLowerCase()) || 'get');
            /**
         * We automatically disable fetch caching under the following conditions:
         * - Fetch cache configs are not set. Specifically:
         *    - A page fetch cache mode is not set (export const fetchCache=...)
         *    - A fetch cache mode is not set in the fetch call (fetch(url, { cache: ... }))
         *      or the fetch cache mode is set to 'default'
         *    - A fetch revalidate value is not set in the fetch call (fetch(url, { revalidate: ... }))
         * - OR the fetch comes after a configuration that triggered dynamic rendering (e.g., reading cookies())
         *   and the fetch was considered uncacheable (e.g., POST method or has authorization headers)
         */ const hasNoExplicitCacheConfig = // eslint-disable-next-line eqeqeq
            pageFetchCacheMode == undefined && // eslint-disable-next-line eqeqeq
            (currentFetchCacheConfig == undefined || // when considering whether to opt into the default "no-cache" fetch semantics,
            // a "default" cache config should be treated the same as no cache config
            currentFetchCacheConfig === 'default') && // eslint-disable-next-line eqeqeq
            currentFetchRevalidate == undefined;
            const autoNoCache = // this condition is hit for null/undefined
            // eslint-disable-next-line eqeqeq
            hasNoExplicitCacheConfig && // we disable automatic no caching behavior during build time SSG so that we can still
            // leverage the fetch cache between SSG workers
            !workStore.isPrerendering || (hasUnCacheableHeader || isUnCacheableMethod) && revalidateStore && revalidateStore.revalidate === 0;
            if (hasNoExplicitCacheConfig && workUnitStore !== undefined && workUnitStore.type === 'prerender') {
                // If we have no cache config, and we're in Dynamic I/O prerendering, it'll be a dynamic call.
                // We don't have to issue that dynamic call.
                if (cacheSignal) {
                    cacheSignal.endRead();
                    cacheSignal = null;
                }
                return makeHangingPromise(workUnitStore.renderSignal, 'fetch()');
            }
            switch(pageFetchCacheMode){
                case 'force-no-store':
                    {
                        cacheReason = 'fetchCache = force-no-store';
                        break;
                    }
                case 'only-no-store':
                    {
                        if (currentFetchCacheConfig === 'force-cache' || typeof finalRevalidate !== 'undefined' && finalRevalidate > 0) {
                            throw new Error(`cache: 'force-cache' used on fetch for ${fetchUrl} with 'export const fetchCache = 'only-no-store'`);
                        }
                        cacheReason = 'fetchCache = only-no-store';
                        break;
                    }
                case 'only-cache':
                    {
                        if (currentFetchCacheConfig === 'no-store') {
                            throw new Error(`cache: 'no-store' used on fetch for ${fetchUrl} with 'export const fetchCache = 'only-cache'`);
                        }
                        break;
                    }
                case 'force-cache':
                    {
                        if (typeof currentFetchRevalidate === 'undefined' || currentFetchRevalidate === 0) {
                            cacheReason = 'fetchCache = force-cache';
                            finalRevalidate = INFINITE_CACHE;
                        }
                        break;
                    }
                default:
            }
            if (typeof finalRevalidate === 'undefined') {
                if (pageFetchCacheMode === 'default-cache' && !isUsingNoStore) {
                    finalRevalidate = INFINITE_CACHE;
                    cacheReason = 'fetchCache = default-cache';
                } else if (pageFetchCacheMode === 'default-no-store') {
                    finalRevalidate = 0;
                    cacheReason = 'fetchCache = default-no-store';
                } else if (isUsingNoStore) {
                    finalRevalidate = 0;
                    cacheReason = 'noStore call';
                } else if (autoNoCache) {
                    finalRevalidate = 0;
                    cacheReason = 'auto no cache';
                } else {
                    // TODO: should we consider this case an invariant?
                    cacheReason = 'auto cache';
                    finalRevalidate = revalidateStore ? revalidateStore.revalidate : INFINITE_CACHE;
                }
            } else if (!cacheReason) {
                cacheReason = `revalidate: ${finalRevalidate}`;
            }
            if (// when force static is configured we don't bail from
            // `revalidate: 0` values
            !(workStore.forceStatic && finalRevalidate === 0) && // we don't consider autoNoCache to switch to dynamic for ISR
            !autoNoCache && // If the revalidate value isn't currently set or the value is less
            // than the current revalidate value, we should update the revalidate
            // value.
            revalidateStore && finalRevalidate < revalidateStore.revalidate) {
                // If we were setting the revalidate value to 0, we should try to
                // postpone instead first.
                if (finalRevalidate === 0) {
                    if (workUnitStore && workUnitStore.type === 'prerender') {
                        if (cacheSignal) {
                            cacheSignal.endRead();
                            cacheSignal = null;
                        }
                        return makeHangingPromise(workUnitStore.renderSignal, 'fetch()');
                    } else {
                        markCurrentScopeAsDynamic(workStore, workUnitStore, `revalidate: 0 fetch ${input} ${workStore.route}`);
                    }
                }
                // We only want to set the revalidate store's revalidate time if it
                // was explicitly set for the fetch call, i.e. currentFetchRevalidate.
                if (revalidateStore && currentFetchRevalidate === finalRevalidate) {
                    revalidateStore.revalidate = finalRevalidate;
                }
            }
            const isCacheableRevalidate = typeof finalRevalidate === 'number' && finalRevalidate > 0;
            let cacheKey;
            const { incrementalCache } = workStore;
            const requestStore = workUnitStore !== undefined && workUnitStore.type === 'request' ? workUnitStore : undefined;
            if (incrementalCache && (isCacheableRevalidate || (requestStore == null ? void 0 : requestStore.serverComponentsHmrCache))) {
                try {
                    cacheKey = await incrementalCache.generateCacheKey(fetchUrl, isRequestInput ? input : init);
                } catch (err) {
                    console.error(`Failed to generate cache key for`, input);
                }
            }
            const fetchIdx = workStore.nextFetchId ?? 1;
            workStore.nextFetchId = fetchIdx + 1;
            let handleUnlock = ()=>Promise.resolve();
            const doOriginalFetch = async (isStale, cacheReasonOverride)=>{
                const requestInputFields = [
                    'cache',
                    'credentials',
                    'headers',
                    'integrity',
                    'keepalive',
                    'method',
                    'mode',
                    'redirect',
                    'referrer',
                    'referrerPolicy',
                    'window',
                    'duplex',
                    // don't pass through signal when revalidating
                    ...isStale ? [] : [
                        'signal'
                    ]
                ];
                if (isRequestInput) {
                    const reqInput = input;
                    const reqOptions = {
                        body: reqInput._ogBody || reqInput.body
                    };
                    for (const field of requestInputFields){
                        // @ts-expect-error custom fields
                        reqOptions[field] = reqInput[field];
                    }
                    input = new Request(reqInput.url, reqOptions);
                } else if (init) {
                    const { _ogBody, body, signal, ...otherInput } = init;
                    init = {
                        ...otherInput,
                        body: _ogBody || body,
                        signal: isStale ? undefined : signal
                    };
                }
                // add metadata to init without editing the original
                const clonedInit = {
                    ...init,
                    next: {
                        ...init == null ? void 0 : init.next,
                        fetchType: 'origin',
                        fetchIdx
                    }
                };
                return originFetch(input, clonedInit).then(async (res)=>{
                    if (!isStale && fetchStart) {
                        trackFetchMetric(workStore, {
                            start: fetchStart,
                            url: fetchUrl,
                            cacheReason: cacheReasonOverride || cacheReason,
                            cacheStatus: finalRevalidate === 0 || cacheReasonOverride ? 'skip' : 'miss',
                            cacheWarning,
                            status: res.status,
                            method: clonedInit.method || 'GET'
                        });
                    }
                    if (res.status === 200 && incrementalCache && cacheKey && (isCacheableRevalidate || (requestStore == null ? void 0 : requestStore.serverComponentsHmrCache))) {
                        const normalizedRevalidate = finalRevalidate >= INFINITE_CACHE ? CACHE_ONE_YEAR : finalRevalidate;
                        const externalRevalidate = finalRevalidate >= INFINITE_CACHE ? false : finalRevalidate;
                        if (workUnitStore && workUnitStore.type === 'prerender') {
                            // We are prerendering at build time or revalidate time with dynamicIO so we need to
                            // buffer the response so we can guarantee it can be read in a microtask
                            const bodyBuffer = await res.arrayBuffer();
                            const fetchedData = {
                                headers: Object.fromEntries(res.headers.entries()),
                                body: Buffer.from(bodyBuffer).toString('base64'),
                                status: res.status,
                                url: res.url
                            };
                            // We can skip checking the serverComponentsHmrCache because we aren't in
                            // dev mode.
                            await incrementalCache.set(cacheKey, {
                                kind: CachedRouteKind.FETCH,
                                data: fetchedData,
                                revalidate: normalizedRevalidate
                            }, {
                                fetchCache: true,
                                revalidate: externalRevalidate,
                                fetchUrl,
                                fetchIdx,
                                tags
                            });
                            await handleUnlock();
                            // We return a new Response to the caller.
                            return new Response(bodyBuffer, {
                                headers: res.headers,
                                status: res.status,
                                statusText: res.statusText
                            });
                        } else {
                            // We're cloning the response using this utility because there
                            // exists a bug in the undici library around response cloning.
                            // See the following pull request for more details:
                            // https://github.com/vercel/next.js/pull/73274
                            const [cloned1, cloned2] = cloneResponse(res);
                            // We are dynamically rendering including dev mode. We want to return
                            // the response to the caller as soon as possible because it might stream
                            // over a very long time.
                            cloned1.arrayBuffer().then(async (arrayBuffer)=>{
                                var _requestStore_serverComponentsHmrCache;
                                const bodyBuffer = Buffer.from(arrayBuffer);
                                const fetchedData = {
                                    headers: Object.fromEntries(cloned1.headers.entries()),
                                    body: bodyBuffer.toString('base64'),
                                    status: cloned1.status,
                                    url: cloned1.url
                                };
                                requestStore == null ? void 0 : (_requestStore_serverComponentsHmrCache = requestStore.serverComponentsHmrCache) == null ? void 0 : _requestStore_serverComponentsHmrCache.set(cacheKey, fetchedData);
                                if (isCacheableRevalidate) {
                                    await incrementalCache.set(cacheKey, {
                                        kind: CachedRouteKind.FETCH,
                                        data: fetchedData,
                                        revalidate: normalizedRevalidate
                                    }, {
                                        fetchCache: true,
                                        revalidate: externalRevalidate,
                                        fetchUrl,
                                        fetchIdx,
                                        tags
                                    });
                                }
                            }).catch((error)=>console.warn(`Failed to set fetch cache`, input, error)).finally(handleUnlock);
                            return cloned2;
                        }
                    }
                    // we had response that we determined shouldn't be cached so we return it
                    // and don't cache it. This also needs to unlock the cache lock we acquired.
                    await handleUnlock();
                    return res;
                }).catch((error)=>{
                    handleUnlock();
                    throw error;
                });
            };
            let cacheReasonOverride;
            let isForegroundRevalidate = false;
            let isHmrRefreshCache = false;
            if (cacheKey && incrementalCache) {
                let cachedFetchData;
                if ((requestStore == null ? void 0 : requestStore.isHmrRefresh) && requestStore.serverComponentsHmrCache) {
                    cachedFetchData = requestStore.serverComponentsHmrCache.get(cacheKey);
                    isHmrRefreshCache = true;
                }
                if (isCacheableRevalidate && !cachedFetchData) {
                    handleUnlock = await incrementalCache.lock(cacheKey);
                    const entry = workStore.isOnDemandRevalidate ? null : await incrementalCache.get(cacheKey, {
                        kind: IncrementalCacheKind.FETCH,
                        revalidate: finalRevalidate,
                        fetchUrl,
                        fetchIdx,
                        tags,
                        softTags: implicitTags,
                        isFallback: false
                    });
                    if (hasNoExplicitCacheConfig) {
                        // We sometimes use the cache to dedupe fetches that do not specify a cache configuration
                        // In these cases we want to make sure we still exclude them from prerenders if dynamicIO is on
                        // so we introduce an artificial Task boundary here.
                        if (workUnitStore && workUnitStore.type === 'prerender') {
                            await waitAtLeastOneReactRenderTask();
                        }
                    }
                    if (entry) {
                        await handleUnlock();
                    } else {
                        // in dev, incremental cache response will be null in case the browser adds `cache-control: no-cache` in the request headers
                        cacheReasonOverride = 'cache-control: no-cache (hard refresh)';
                    }
                    if ((entry == null ? void 0 : entry.value) && entry.value.kind === CachedRouteKind.FETCH) {
                        // when stale and is revalidating we wait for fresh data
                        // so the revalidated entry has the updated data
                        if (workStore.isRevalidate && entry.isStale) {
                            isForegroundRevalidate = true;
                        } else {
                            if (entry.isStale) {
                                workStore.pendingRevalidates ??= {};
                                if (!workStore.pendingRevalidates[cacheKey]) {
                                    const pendingRevalidate = doOriginalFetch(true).then(async (response)=>({
                                            body: await response.arrayBuffer(),
                                            headers: response.headers,
                                            status: response.status,
                                            statusText: response.statusText
                                        })).finally(()=>{
                                        workStore.pendingRevalidates ??= {};
                                        delete workStore.pendingRevalidates[cacheKey || ''];
                                    });
                                    // Attach the empty catch here so we don't get a "unhandled
                                    // promise rejection" warning.
                                    pendingRevalidate.catch(console.error);
                                    workStore.pendingRevalidates[cacheKey] = pendingRevalidate;
                                }
                            }
                            cachedFetchData = entry.value.data;
                        }
                    }
                }
                if (cachedFetchData) {
                    if (fetchStart) {
                        trackFetchMetric(workStore, {
                            start: fetchStart,
                            url: fetchUrl,
                            cacheReason,
                            cacheStatus: isHmrRefreshCache ? 'hmr' : 'hit',
                            cacheWarning,
                            status: cachedFetchData.status || 200,
                            method: (init == null ? void 0 : init.method) || 'GET'
                        });
                    }
                    const response = new Response(Buffer.from(cachedFetchData.body, 'base64'), {
                        headers: cachedFetchData.headers,
                        status: cachedFetchData.status
                    });
                    Object.defineProperty(response, 'url', {
                        value: cachedFetchData.url
                    });
                    return response;
                }
            }
            if (workStore.isStaticGeneration && init && typeof init === 'object') {
                const { cache } = init;
                // Delete `cache` property as Cloudflare Workers will throw an error
                if (isEdgeRuntime) delete init.cache;
                if (cache === 'no-store') {
                    // If enabled, we should bail out of static generation.
                    if (workUnitStore && workUnitStore.type === 'prerender') {
                        if (cacheSignal) {
                            cacheSignal.endRead();
                            cacheSignal = null;
                        }
                        return makeHangingPromise(workUnitStore.renderSignal, 'fetch()');
                    } else {
                        markCurrentScopeAsDynamic(workStore, workUnitStore, `no-store fetch ${input} ${workStore.route}`);
                    }
                }
                const hasNextConfig = 'next' in init;
                const { next = {} } = init;
                if (typeof next.revalidate === 'number' && revalidateStore && next.revalidate < revalidateStore.revalidate) {
                    if (next.revalidate === 0) {
                        // If enabled, we should bail out of static generation.
                        if (workUnitStore && workUnitStore.type === 'prerender') {
                            return makeHangingPromise(workUnitStore.renderSignal, 'fetch()');
                        } else {
                            markCurrentScopeAsDynamic(workStore, workUnitStore, `revalidate: 0 fetch ${input} ${workStore.route}`);
                        }
                    }
                    if (!workStore.forceStatic || next.revalidate !== 0) {
                        revalidateStore.revalidate = next.revalidate;
                    }
                }
                if (hasNextConfig) delete init.next;
            }
            // if we are revalidating the whole page via time or on-demand and
            // the fetch cache entry is stale we should still de-dupe the
            // origin hit if it's a cache-able entry
            if (cacheKey && isForegroundRevalidate) {
                const pendingRevalidateKey = cacheKey;
                workStore.pendingRevalidates ??= {};
                let pendingRevalidate = workStore.pendingRevalidates[pendingRevalidateKey];
                if (pendingRevalidate) {
                    const revalidatedResult = await pendingRevalidate;
                    return new Response(revalidatedResult.body, {
                        headers: revalidatedResult.headers,
                        status: revalidatedResult.status,
                        statusText: revalidatedResult.statusText
                    });
                }
                // We used to just resolve the Response and clone it however for
                // static generation with dynamicIO we need the response to be able to
                // be resolved in a microtask and cloning the response will never have
                // a body that can resolve in a microtask in node (as observed through
                // experimentation) So instead we await the body and then when it is
                // available we construct manually cloned Response objects with the
                // body as an ArrayBuffer. This will be resolvable in a microtask
                // making it compatible with dynamicIO.
                const pendingResponse = doOriginalFetch(true, cacheReasonOverride)// We're cloning the response using this utility because there
                // exists a bug in the undici library around response cloning.
                // See the following pull request for more details:
                // https://github.com/vercel/next.js/pull/73274
                .then(cloneResponse);
                pendingRevalidate = pendingResponse.then(async (responses)=>{
                    const response = responses[0];
                    return {
                        body: await response.arrayBuffer(),
                        headers: response.headers,
                        status: response.status,
                        statusText: response.statusText
                    };
                }).finally(()=>{
                    var _workStore_pendingRevalidates;
                    // If the pending revalidate is not present in the store, then
                    // we have nothing to delete.
                    if (!((_workStore_pendingRevalidates = workStore.pendingRevalidates) == null ? void 0 : _workStore_pendingRevalidates[pendingRevalidateKey])) {
                        return;
                    }
                    delete workStore.pendingRevalidates[pendingRevalidateKey];
                });
                // Attach the empty catch here so we don't get a "unhandled promise
                // rejection" warning
                pendingRevalidate.catch(()=>{});
                workStore.pendingRevalidates[pendingRevalidateKey] = pendingRevalidate;
                return pendingResponse.then((responses)=>responses[1]);
            } else {
                return doOriginalFetch(false, cacheReasonOverride);
            }
        });
        if (cacheSignal) {
            try {
                return await result;
            } finally{
                if (cacheSignal) {
                    cacheSignal.endRead();
                }
            }
        }
        return result;
    };
    // Attach the necessary properties to the patched fetch function.
    // We don't use this to determine if the fetch function has been patched,
    // but for external consumers to determine if the fetch function has been
    // patched.
    patched.__nextPatched = true;
    patched.__nextGetStaticStore = ()=>workAsyncStorage;
    patched._nextOriginalFetch = originFetch;
    globalThis[NEXT_PATCH_SYMBOL] = true;
    return patched;
}
// we patch fetch to collect cache information used for
// determining if a page is static or not
export function patchFetch(options) {
    // If we've already patched fetch, we should not patch it again.
    if (isFetchPatched()) return;
    // Grab the original fetch function. We'll attach this so we can use it in
    // the patched fetch function.
    const original = createDedupeFetch(globalThis.fetch);
    // Set the global fetch to the patched fetch.
    globalThis.fetch = createPatchedFetcher(original, options);
}

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