import { RouteModule } from "../route-module";
import { RequestAsyncStorageWrapper } from "../../../async-storage/request-async-storage-wrapper";
import { StaticGenerationAsyncStorageWrapper } from "../../../async-storage/static-generation-async-storage-wrapper";
import { handleBadRequestResponse, handleInternalServerErrorResponse } from "../helpers/response-handlers";
import { HTTP_METHODS, isHTTPMethod } from "../../../web/http";
import { addImplicitTags, patchFetch } from "../../../lib/patch-fetch";
import { getTracer } from "../../../lib/trace/tracer";
import { AppRouteRouteHandlersSpan } from "../../../lib/trace/constants";
import { getPathnameFromAbsolutePath } from "./helpers/get-pathname-from-absolute-path";
import { proxyRequest } from "./helpers/proxy-request";
import { resolveHandlerError } from "./helpers/resolve-handler-error";
import * as Log from "../../../../build/output/log";
import { autoImplementMethods } from "./helpers/auto-implement-methods";
import { getNonStaticMethods } from "./helpers/get-non-static-methods";
import { appendMutableCookies } from "../../../web/spec-extension/adapters/request-cookies";
import { parsedUrlQueryToParams } from "./helpers/parsed-url-query-to-params";
import * as serverHooks from "../../../../client/components/hooks-server-context";
import * as headerHooks from "../../../../client/components/headers";
import { staticGenerationBailout } from "../../../../client/components/static-generation-bailout";
import { requestAsyncStorage } from "../../../../client/components/request-async-storage.external";
import { staticGenerationAsyncStorage } from "../../../../client/components/static-generation-async-storage.external";
import { actionAsyncStorage } from "../../../../client/components/action-async-storage.external";
import * as sharedModules from "./shared-modules";
/**
 * AppRouteRouteHandler is the handler for app routes.
 */ export class AppRouteRouteModule extends RouteModule {
    static #_ = this.sharedModules = sharedModules;
    constructor({ userland, definition, resolvedPagePath, nextConfigOutput }){
        super({
            userland,
            definition
        });
        /**
   * A reference to the request async storage.
   */ this.requestAsyncStorage = requestAsyncStorage;
        /**
   * A reference to the static generation async storage.
   */ this.staticGenerationAsyncStorage = staticGenerationAsyncStorage;
        /**
   * An interface to call server hooks which interact with the underlying
   * storage.
   */ this.serverHooks = serverHooks;
        /**
   * An interface to call header hooks which interact with the underlying
   * request storage.
   */ this.headerHooks = headerHooks;
        /**
   * An interface to call static generation bailout hooks which interact with
   * the underlying static generation storage.
   */ this.staticGenerationBailout = staticGenerationBailout;
        /**
   * A reference to the mutation related async storage, such as mutations of
   * cookies.
   */ this.actionAsyncStorage = actionAsyncStorage;
        this.resolvedPagePath = resolvedPagePath;
        this.nextConfigOutput = nextConfigOutput;
        // Automatically implement some methods if they aren't implemented by the
        // userland module.
        this.methods = autoImplementMethods(userland);
        // Get the non-static methods for this route.
        this.nonStaticMethods = getNonStaticMethods(userland);
        // Get the dynamic property from the userland module.
        this.dynamic = this.userland.dynamic;
        if (this.nextConfigOutput === "export") {
            if (!this.dynamic || this.dynamic === "auto") {
                this.dynamic = "error";
            } else if (this.dynamic === "force-dynamic") {
                throw new Error(`export const dynamic = "force-dynamic" on page "${definition.pathname}" cannot be used with "output: export". See more info here: https://nextjs.org/docs/advanced-features/static-html-export`);
            }
        }
        // We only warn in development after here, so return if we're not in
        // development.
        if (process.env.NODE_ENV === "development") {
            // Print error in development if the exported handlers are in lowercase, only
            // uppercase handlers are supported.
            const lowercased = HTTP_METHODS.map((method)=>method.toLowerCase());
            for (const method of lowercased){
                if (method in this.userland) {
                    Log.error(`Detected lowercase method '${method}' in '${this.resolvedPagePath}'. Export the uppercase '${method.toUpperCase()}' method name to fix this error.`);
                }
            }
            // Print error if the module exports a default handler, they must use named
            // exports for each HTTP method.
            if ("default" in this.userland) {
                Log.error(`Detected default export in '${this.resolvedPagePath}'. Export a named export for each HTTP method instead.`);
            }
            // If there is no methods exported by this module, then return a not found
            // response.
            if (!HTTP_METHODS.some((method)=>method in this.userland)) {
                Log.error(`No HTTP methods exported in '${this.resolvedPagePath}'. Export a named export for each HTTP method.`);
            }
        }
    }
    /**
   * Resolves the handler function for the given method.
   *
   * @param method the requested method
   * @returns the handler function for the given method
   */ resolve(method) {
        // Ensure that the requested method is a valid method (to prevent RCE's).
        if (!isHTTPMethod(method)) return handleBadRequestResponse;
        // Return the handler.
        return this.methods[method];
    }
    /**
   * Executes the route handler.
   */ async execute(request, context) {
        // Get the handler function for the given method.
        const handler = this.resolve(request.method);
        // Get the context for the request.
        const requestContext = {
            req: request
        };
        requestContext.renderOpts = {
            previewProps: context.prerenderManifest.preview
        };
        // Get the context for the static generation.
        const staticGenerationContext = {
            urlPathname: request.nextUrl.pathname,
            renderOpts: context.renderOpts
        };
        // Add the fetchCache option to the renderOpts.
        staticGenerationContext.renderOpts.fetchCache = this.userland.fetchCache;
        // Run the handler with the request AsyncLocalStorage to inject the helper
        // support. We set this to `unknown` because the type is not known until
        // runtime when we do a instanceof check below.
        const response = await this.actionAsyncStorage.run({
            isAppRoute: true
        }, ()=>RequestAsyncStorageWrapper.wrap(this.requestAsyncStorage, requestContext, ()=>StaticGenerationAsyncStorageWrapper.wrap(this.staticGenerationAsyncStorage, staticGenerationContext, (staticGenerationStore)=>{
                    var _getTracer_getRootSpanAttributes;
                    // Check to see if we should bail out of static generation based on
                    // having non-static methods.
                    if (this.nonStaticMethods) {
                        this.staticGenerationBailout(`non-static methods used ${this.nonStaticMethods.join(", ")}`);
                    }
                    // Update the static generation store based on the dynamic property.
                    switch(this.dynamic){
                        case "force-dynamic":
                            // The dynamic property is set to force-dynamic, so we should
                            // force the page to be dynamic.
                            staticGenerationStore.forceDynamic = true;
                            this.staticGenerationBailout(`force-dynamic`, {
                                dynamic: this.dynamic
                            });
                            break;
                        case "force-static":
                            // The dynamic property is set to force-static, so we should
                            // force the page to be static.
                            staticGenerationStore.forceStatic = true;
                            break;
                        case "error":
                            // The dynamic property is set to error, so we should throw an
                            // error if the page is being statically generated.
                            staticGenerationStore.dynamicShouldError = true;
                            break;
                        default:
                            break;
                    }
                    // If the static generation store does not have a revalidate value
                    // set, then we should set it the revalidate value from the userland
                    // module or default to false.
                    staticGenerationStore.revalidate ??= this.userland.revalidate ?? false;
                    // Wrap the request so we can add additional functionality to cases
                    // that might change it's output or affect the rendering.
                    const wrappedRequest = proxyRequest(request, {
                        dynamic: this.dynamic
                    }, {
                        headerHooks: this.headerHooks,
                        serverHooks: this.serverHooks,
                        staticGenerationBailout: this.staticGenerationBailout
                    });
                    // TODO: propagate this pathname from route matcher
                    const route = getPathnameFromAbsolutePath(this.resolvedPagePath);
                    (_getTracer_getRootSpanAttributes = getTracer().getRootSpanAttributes()) == null ? void 0 : _getTracer_getRootSpanAttributes.set("next.route", route);
                    return getTracer().trace(AppRouteRouteHandlersSpan.runHandler, {
                        spanName: `executing api route (app) ${route}`,
                        attributes: {
                            "next.route": route
                        }
                    }, async ()=>{
                        var _staticGenerationStore_tags;
                        // Patch the global fetch.
                        patchFetch({
                            serverHooks: this.serverHooks,
                            staticGenerationAsyncStorage: this.staticGenerationAsyncStorage
                        });
                        const res = await handler(wrappedRequest, {
                            params: context.params ? parsedUrlQueryToParams(context.params) : undefined
                        });
                        if (!(res instanceof Response)) {
                            throw new Error(`No response is returned from route handler '${this.resolvedPagePath}'. Ensure you return a \`Response\` or a \`NextResponse\` in all branches of your handler.`);
                        }
                        context.renderOpts.fetchMetrics = staticGenerationStore.fetchMetrics;
                        context.renderOpts.waitUntil = Promise.all(Object.values(staticGenerationStore.pendingRevalidates || []));
                        addImplicitTags(staticGenerationStore);
                        context.renderOpts.fetchTags = (_staticGenerationStore_tags = staticGenerationStore.tags) == null ? void 0 : _staticGenerationStore_tags.join(",");
                        // It's possible cookies were set in the handler, so we need
                        // to merge the modified cookies and the returned response
                        // here.
                        const requestStore = this.requestAsyncStorage.getStore();
                        if (requestStore && requestStore.mutableCookies) {
                            const headers = new Headers(res.headers);
                            if (appendMutableCookies(headers, requestStore.mutableCookies)) {
                                return new Response(res.body, {
                                    status: res.status,
                                    statusText: res.statusText,
                                    headers
                                });
                            }
                        }
                        return res;
                    });
                })));
        // If the handler did't return a valid response, then return the internal
        // error response.
        if (!(response instanceof Response)) {
            // TODO: validate the correct handling behavior, maybe log something?
            return handleInternalServerErrorResponse();
        }
        if (response.headers.has("x-middleware-rewrite")) {
            // TODO: move this error into the `NextResponse.rewrite()` function.
            // TODO-APP: re-enable support below when we can proxy these type of requests
            throw new Error("NextResponse.rewrite() was used in a app route handler, this is not currently supported. Please remove the invocation to continue.");
        // // This is a rewrite created via `NextResponse.rewrite()`. We need to send
        // // the response up so it can be handled by the backing server.
        // // If the server is running in minimal mode, we just want to forward the
        // // response (including the rewrite headers) upstream so it can perform the
        // // redirect for us, otherwise return with the special condition so this
        // // server can perform a rewrite.
        // if (!minimalMode) {
        //   return { response, condition: 'rewrite' }
        // }
        // // Relativize the url so it's relative to the base url. This is so the
        // // outgoing headers upstream can be relative.
        // const rewritePath = response.headers.get('x-middleware-rewrite')!
        // const initUrl = getRequestMeta(req, 'initURL')!
        // const { pathname } = parseUrl(relativizeURL(rewritePath, initUrl))
        // response.headers.set('x-middleware-rewrite', pathname)
        }
        if (response.headers.get("x-middleware-next") === "1") {
            // TODO: move this error into the `NextResponse.next()` function.
            throw new Error("NextResponse.next() was used in a app route handler, this is not supported. See here for more info: https://nextjs.org/docs/messages/next-response-next-in-app-route-handler");
        }
        return response;
    }
    async handle(request, context) {
        try {
            // Execute the route to get the response.
            const response = await this.execute(request, context);
            // The response was handled, return it.
            return response;
        } catch (err) {
            // Try to resolve the error to a response, else throw it again.
            const response = resolveHandlerError(err);
            if (!response) throw err;
            // The response was resolved, return it.
            return response;
        }
    }
}
export default AppRouteRouteModule;

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