import { PageSignatureError } from "./error";
import { fromNodeHeaders } from "./utils";
import { NextFetchEvent } 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 { waitUntilSymbol } from "./spec-extension/fetch-event";
import { NextURL } from "./next-url";
import { stripInternalSearchParams } from "../internal-utils";
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 FLIGHT_PARAMETERS = [
    "__rsc__",
    "__next_router_state_tree__",
    "__next_router_prefetch__", 
];
export async function adapter(params) {
    // TODO-APP: use explicit marker for this
    const isEdgeRendering = typeof self.__BUILD_MANIFEST !== "undefined";
    const requestUrl = new NextURL(params.request.url, {
        headers: params.request.headers,
        nextConfig: params.request.nextConfig
    });
    // Ensure users only see page requests, never data requests.
    const buildId = requestUrl.buildId;
    requestUrl.buildId = "";
    const isDataReq = params.request.headers["x-nextjs-data"];
    if (isDataReq && requestUrl.pathname === "/index") {
        requestUrl.pathname = "/";
    }
    const requestHeaders = fromNodeHeaders(params.request.headers);
    // Parameters should only be stripped for middleware
    if (!isEdgeRendering) {
        for (const param of FLIGHT_PARAMETERS){
            requestHeaders.delete(param);
        }
    }
    // Strip internal query parameters off the request.
    stripInternalSearchParams(requestUrl.searchParams, true);
    const request = new NextRequestHint({
        page: params.page,
        input: String(requestUrl),
        init: {
            body: params.request.body,
            geo: params.request.geo,
            headers: requestHeaders,
            ip: params.request.ip,
            method: params.request.method,
            nextConfig: params.request.nextConfig
        }
    });
    /**
   * 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 (isDataReq) {
        Object.defineProperty(request, "__isData", {
            enumerable: false,
            value: true
        });
    }
    const event = new NextFetchEvent({
        request,
        page: params.page
    });
    let response = await params.handler(request, event);
    /**
   * 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) {
        const rewriteUrl = new NextURL(rewrite, {
            forceLocale: true,
            headers: params.request.headers,
            nextConfig: params.request.nextConfig
        });
        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.
     */ if (isDataReq) {
            response.headers.set("x-nextjs-rewrite", relativizeURL(String(rewriteUrl), String(requestUrl)));
        }
    }
    /**
   * 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) {
        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 (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 (isDataReq) {
            response.headers.delete("Location");
            response.headers.set("x-nextjs-redirect", relativizeURL(String(redirectURL), String(requestUrl)));
        }
    }
    return {
        response: response || NextResponse.next(),
        waitUntil: Promise.all(event[waitUntilSymbol])
    };
}
export function blockUnallowedResponse(promise) {
    return promise.then((result)=>{
        var ref;
        if ((ref = result.response) == null ? void 0 : ref.body) {
            console.error(new Error(`A middleware can not alter response's body. Learn more: https://nextjs.org/docs/messages/returning-response-body-in-middleware`));
            return {
                ...result,
                response: new Response("Internal Server Error", {
                    status: 500,
                    statusText: "Internal Server Error"
                })
            };
        }
        return result;
    });
}
function getUnsupportedModuleErrorMessage(module) {
    // warning: if you change these messages, you must adjust how react-dev-overlay's middleware detects modules not found
    return `The edge runtime does not support Node.js '${module}' module.
Learn More: https://nextjs.org/docs/messages/node-module-in-edge-runtime`;
}
function __import_unsupported(moduleName) {
    const proxy = new Proxy(function() {}, {
        get (_obj, prop) {
            if (prop === "then") {
                return {};
            }
            throw new Error(getUnsupportedModuleErrorMessage(moduleName));
        },
        construct () {
            throw new Error(getUnsupportedModuleErrorMessage(moduleName));
        },
        apply (_target, _this, args) {
            if (typeof args[0] === "function") {
                return args[0](proxy);
            }
            throw new Error(getUnsupportedModuleErrorMessage(moduleName));
        }
    });
    return new Proxy({}, {
        get: ()=>proxy
    });
}
export function enhanceGlobals() {
    // The condition is true when the "process" module is provided
    if (process !== global.process) {
        // prefer local process but global.process has correct "env"
        process.env = global.process.env;
        global.process = process;
    }
    // to allow building code that import but does not use node.js modules,
    // webpack will expect this function to exist in global scope
    Object.defineProperty(globalThis, "__import_unsupported", {
        value: __import_unsupported,
        enumerable: false,
        configurable: false
    });
}

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