import { PageSignatureError } from './error';
import { fromNodeOutgoingHttpHeaders, normalizeNextQueryParam } from './utils';
import { NextFetchEvent, getWaitUntilPromiseFromEvent } from './spec-extension/fetch-event';
import { NextRequest } from './spec-extension/request';
import { NextResponse } from './spec-extension/response';
import { relativizeURL } from '../../shared/lib/router/utils/relativize-url';
import { NextURL } from './next-url';
import { stripInternalSearchParams } from '../internal-utils';
import { normalizeRscURL } from '../../shared/lib/router/utils/app-paths';
import { FLIGHT_HEADERS } from '../../client/components/app-router-headers';
import { ensureInstrumentationRegistered } from './globals';
import { createRequestStoreForAPI } from '../async-storage/request-store';
import { workUnitAsyncStorage } from '../app-render/work-unit-async-storage.external';
import { createWorkStore } from '../async-storage/work-store';
import { workAsyncStorage } from '../app-render/work-async-storage.external';
import { NEXT_ROUTER_PREFETCH_HEADER } from '../../client/components/app-router-headers';
import { getTracer } from '../lib/trace/tracer';
import { MiddlewareSpan } from '../lib/trace/constants';
import { CloseController } from './web-on-close';
import { getEdgePreviewProps } from './get-edge-preview-props';
import { getBuiltinRequestContext } from '../after/builtin-request-context';
export class NextRequestHint extends NextRequest {
    constructor(params){
        super(params.input, params.init);
        this.sourcePage = params.page;
    }
    get request() {
        throw new PageSignatureError({
            page: this.sourcePage
        });
    }
    respondWith() {
        throw new PageSignatureError({
            page: this.sourcePage
        });
    }
    waitUntil() {
        throw new PageSignatureError({
            page: this.sourcePage
        });
    }
}
const headersGetter = {
    keys: (headers)=>Array.from(headers.keys()),
    get: (headers, key)=>headers.get(key) ?? undefined
};
let propagator = (request, fn)=>{
    const tracer = getTracer();
    return tracer.withPropagatedContext(request.headers, fn, headersGetter);
};
let testApisIntercepted = false;
function ensureTestApisIntercepted() {
    if (!testApisIntercepted) {
        testApisIntercepted = true;
        if (process.env.NEXT_PRIVATE_TEST_PROXY === 'true') {
            const { interceptTestApis, wrapRequestHandler } = require('next/dist/experimental/testmode/server-edge');
            interceptTestApis();
            propagator = wrapRequestHandler(propagator);
        }
    }
}
export async function adapter(params) {
    var _getBuiltinRequestContext;
    ensureTestApisIntercepted();
    await ensureInstrumentationRegistered();
    // TODO-APP: use explicit marker for this
    const isEdgeRendering = typeof self.__BUILD_MANIFEST !== 'undefined';
    params.request.url = normalizeRscURL(params.request.url);
    const requestUrl = new NextURL(params.request.url, {
        headers: params.request.headers,
        nextConfig: params.request.nextConfig
    });
    // Iterator uses an index to keep track of the current iteration. Because of deleting and appending below we can't just use the iterator.
    // Instead we use the keys before iteration.
    const keys = [
        ...requestUrl.searchParams.keys()
    ];
    for (const key of keys){
        const value = requestUrl.searchParams.getAll(key);
        normalizeNextQueryParam(key, (normalizedKey)=>{
            requestUrl.searchParams.delete(normalizedKey);
            for (const val of value){
                requestUrl.searchParams.append(normalizedKey, val);
            }
            requestUrl.searchParams.delete(key);
        });
    }
    // Ensure users only see page requests, never data requests.
    const buildId = requestUrl.buildId;
    requestUrl.buildId = '';
    const isNextDataRequest = params.request.headers['x-nextjs-data'];
    if (isNextDataRequest && requestUrl.pathname === '/index') {
        requestUrl.pathname = '/';
    }
    const requestHeaders = fromNodeOutgoingHttpHeaders(params.request.headers);
    const flightHeaders = new Map();
    // Headers should only be stripped for middleware
    if (!isEdgeRendering) {
        for (const header of FLIGHT_HEADERS){
            const key = header.toLowerCase();
            const value = requestHeaders.get(key);
            if (value) {
                flightHeaders.set(key, value);
                requestHeaders.delete(key);
            }
        }
    }
    const normalizeUrl = process.env.__NEXT_NO_MIDDLEWARE_URL_NORMALIZE ? new URL(params.request.url) : requestUrl;
    const request = new NextRequestHint({
        page: params.page,
        // Strip internal query parameters off the request.
        input: stripInternalSearchParams(normalizeUrl, true).toString(),
        init: {
            body: params.request.body,
            headers: requestHeaders,
            method: params.request.method,
            nextConfig: params.request.nextConfig,
            signal: params.request.signal
        }
    });
    /**
   * This allows to identify the request as a data request. The user doesn't
   * need to know about this property neither use it. We add it for testing
   * purposes.
   */ if (isNextDataRequest) {
        Object.defineProperty(request, '__isData', {
            enumerable: false,
            value: true
        });
    }
    if (!globalThis.__incrementalCache && params.IncrementalCache) {
        ;
        globalThis.__incrementalCache = new params.IncrementalCache({
            appDir: true,
            fetchCache: true,
            minimalMode: process.env.NODE_ENV !== 'development',
            fetchCacheKeyPrefix: process.env.__NEXT_FETCH_CACHE_KEY_PREFIX,
            dev: process.env.NODE_ENV === 'development',
            requestHeaders: params.request.headers,
            requestProtocol: 'https',
            getPrerenderManifest: ()=>{
                return {
                    version: -1,
                    routes: {},
                    dynamicRoutes: {},
                    notFoundRoutes: [],
                    preview: getEdgePreviewProps()
                };
            }
        });
    }
    // if we're in an edge runtime sandbox, we should use the waitUntil
    // that we receive from the enclosing NextServer
    const outerWaitUntil = params.request.waitUntil ?? ((_getBuiltinRequestContext = getBuiltinRequestContext()) == null ? void 0 : _getBuiltinRequestContext.waitUntil);
    const event = new NextFetchEvent({
        request,
        page: params.page,
        context: outerWaitUntil ? {
            waitUntil: outerWaitUntil
        } : undefined
    });
    let response;
    let cookiesFromResponse;
    response = await propagator(request, ()=>{
        // we only care to make async storage available for middleware
        const isMiddleware = params.page === '/middleware' || params.page === '/src/middleware';
        if (isMiddleware) {
            var _params_request_nextConfig_experimental, _params_request_nextConfig;
            // if we're in an edge function, we only get a subset of `nextConfig` (no `experimental`),
            // so we have to inject it via DefinePlugin.
            // in `next start` this will be passed normally (see `NextNodeServer.runMiddleware`).
            const isAfterEnabled = ((_params_request_nextConfig = params.request.nextConfig) == null ? void 0 : (_params_request_nextConfig_experimental = _params_request_nextConfig.experimental) == null ? void 0 : _params_request_nextConfig_experimental.after) ?? !!process.env.__NEXT_AFTER;
            const waitUntil = event.waitUntil.bind(event);
            const closeController = new CloseController();
            return getTracer().trace(MiddlewareSpan.execute, {
                spanName: `middleware ${request.method} ${request.nextUrl.pathname}`,
                attributes: {
                    'http.target': request.nextUrl.pathname,
                    'http.method': request.method
                }
            }, async ()=>{
                try {
                    var _params_request_nextConfig_experimental, _params_request_nextConfig, _params_request_nextConfig_experimental1, _params_request_nextConfig1;
                    const onUpdateCookies = (cookies)=>{
                        cookiesFromResponse = cookies;
                    };
                    const previewProps = getEdgePreviewProps();
                    const requestStore = createRequestStoreForAPI(request, request.nextUrl, undefined, onUpdateCookies, previewProps);
                    const workStore = createWorkStore({
                        page: '/',
                        fallbackRouteParams: null,
                        renderOpts: {
                            cacheLifeProfiles: (_params_request_nextConfig = params.request.nextConfig) == null ? void 0 : (_params_request_nextConfig_experimental = _params_request_nextConfig.experimental) == null ? void 0 : _params_request_nextConfig_experimental.cacheLife,
                            experimental: {
                                after: isAfterEnabled,
                                isRoutePPREnabled: false,
                                dynamicIO: false,
                                authInterrupts: !!((_params_request_nextConfig1 = params.request.nextConfig) == null ? void 0 : (_params_request_nextConfig_experimental1 = _params_request_nextConfig1.experimental) == null ? void 0 : _params_request_nextConfig_experimental1.authInterrupts)
                            },
                            buildId: buildId ?? '',
                            supportsDynamicResponse: true,
                            waitUntil,
                            onClose: closeController.onClose.bind(closeController),
                            onAfterTaskError: undefined
                        },
                        requestEndedState: {
                            ended: false
                        },
                        isPrefetchRequest: request.headers.has(NEXT_ROUTER_PREFETCH_HEADER)
                    });
                    return await workAsyncStorage.run(workStore, ()=>workUnitAsyncStorage.run(requestStore, params.handler, request, event));
                } finally{
                    // middleware cannot stream, so we can consider the response closed
                    // as soon as the handler returns.
                    if (closeController) {
                        // we can delay running it until a bit later --
                        // if it's needed, we'll have a `waitUntil` lock anyway.
                        setTimeout(()=>{
                            closeController.dispatchClose();
                        }, 0);
                    }
                }
            });
        }
        return params.handler(request, event);
    });
    // check if response is a Response object
    if (response && !(response instanceof Response)) {
        throw new TypeError('Expected an instance of Response to be returned');
    }
    if (response && cookiesFromResponse) {
        response.headers.set('set-cookie', cookiesFromResponse);
    }
    /**
   * For rewrites we must always include the locale in the final pathname
   * so we re-create the NextURL forcing it to include it when the it is
   * an internal rewrite. Also we make sure the outgoing rewrite URL is
   * a data URL if the request was a data request.
   */ const rewrite = response == null ? void 0 : response.headers.get('x-middleware-rewrite');
    if (response && rewrite && !isEdgeRendering) {
        const rewriteUrl = new NextURL(rewrite, {
            forceLocale: true,
            headers: params.request.headers,
            nextConfig: params.request.nextConfig
        });
        if (!process.env.__NEXT_NO_MIDDLEWARE_URL_NORMALIZE) {
            if (rewriteUrl.host === request.nextUrl.host) {
                rewriteUrl.buildId = buildId || rewriteUrl.buildId;
                response.headers.set('x-middleware-rewrite', String(rewriteUrl));
            }
        }
        /**
     * When the request is a data request we must show if there was a rewrite
     * with an internal header so the client knows which component to load
     * from the data request.
     */ const relativizedRewrite = relativizeURL(String(rewriteUrl), String(requestUrl));
        if (isNextDataRequest && // if the rewrite is external and external rewrite
        // resolving config is enabled don't add this header
        // so the upstream app can set it instead
        !(process.env.__NEXT_EXTERNAL_MIDDLEWARE_REWRITE_RESOLVE && relativizedRewrite.match(/http(s)?:\/\//))) {
            response.headers.set('x-nextjs-rewrite', relativizedRewrite);
        }
    }
    /**
   * For redirects we will not include the locale in case when it is the
   * default and we must also make sure the outgoing URL is a data one if
   * the incoming request was a data request.
   */ const redirect = response == null ? void 0 : response.headers.get('Location');
    if (response && redirect && !isEdgeRendering) {
        const redirectURL = new NextURL(redirect, {
            forceLocale: false,
            headers: params.request.headers,
            nextConfig: params.request.nextConfig
        });
        /**
     * Responses created from redirects have immutable headers so we have
     * to clone the response to be able to modify it.
     */ response = new Response(response.body, response);
        if (!process.env.__NEXT_NO_MIDDLEWARE_URL_NORMALIZE) {
            if (redirectURL.host === request.nextUrl.host) {
                redirectURL.buildId = buildId || redirectURL.buildId;
                response.headers.set('Location', String(redirectURL));
            }
        }
        /**
     * When the request is a data request we can't use the location header as
     * it may end up with CORS error. Instead we map to an internal header so
     * the client knows the destination.
     */ if (isNextDataRequest) {
            response.headers.delete('Location');
            response.headers.set('x-nextjs-redirect', relativizeURL(String(redirectURL), String(requestUrl)));
        }
    }
    const finalResponse = response ? response : NextResponse.next();
    // Flight headers are not overridable / removable so they are applied at the end.
    const middlewareOverrideHeaders = finalResponse.headers.get('x-middleware-override-headers');
    const overwrittenHeaders = [];
    if (middlewareOverrideHeaders) {
        for (const [key, value] of flightHeaders){
            finalResponse.headers.set(`x-middleware-request-${key}`, value);
            overwrittenHeaders.push(key);
        }
        if (overwrittenHeaders.length > 0) {
            finalResponse.headers.set('x-middleware-override-headers', middlewareOverrideHeaders + ',' + overwrittenHeaders.join(','));
        }
    }
    return {
        response: finalResponse,
        waitUntil: getWaitUntilPromiseFromEvent(event) ?? Promise.resolve(),
        fetchMetrics: request.fetchMetrics
    };
}

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