import "../node-polyfill-fetch";
import http from "http";
import * as Log from "../../build/output/log";
import setupDebug from "next/dist/compiled/debug";
import { getDebugPort } from "./utils";
import { formatHostname } from "./format-hostname";
import { initialize } from "./router-server";
import { checkIsNodeDebugging } from "./is-node-debugging";
const debug = setupDebug("next:start-server");
export async function getRequestHandlers({ dir , port , isDev , hostname , minimalMode , isNodeDebugging , keepAliveTimeout , experimentalTestProxy  }) {
    return initialize({
        dir,
        port,
        hostname,
        dev: isDev,
        minimalMode,
        workerType: "router",
        isNodeDebugging: isNodeDebugging || false,
        keepAliveTimeout,
        experimentalTestProxy
    });
}
export async function startServer({ dir , port , isDev , hostname , minimalMode , allowRetry , keepAliveTimeout , isExperimentalTestProxy , logReady =true  }) {
    let handlersReady = ()=>{};
    let handlersError = ()=>{};
    let handlersPromise = new Promise((resolve, reject)=>{
        handlersReady = resolve;
        handlersError = reject;
    });
    let requestHandler = async (req, res)=>{
        if (handlersPromise) {
            await handlersPromise;
            return requestHandler(req, res);
        }
        throw new Error("Invariant request handler was not setup");
    };
    let upgradeHandler = async (req, socket, head)=>{
        if (handlersPromise) {
            await handlersPromise;
            return upgradeHandler(req, socket, head);
        }
        throw new Error("Invariant upgrade handler was not setup");
    };
    // setup server listener as fast as possible
    const server = http.createServer(async (req, res)=>{
        try {
            if (handlersPromise) {
                await handlersPromise;
                handlersPromise = undefined;
            }
            await requestHandler(req, res);
        } catch (err) {
            res.statusCode = 500;
            res.end("Internal Server Error");
            Log.error(`Failed to handle request for ${req.url}`);
            console.error(err);
        }
    });
    if (keepAliveTimeout) {
        server.keepAliveTimeout = keepAliveTimeout;
    }
    server.on("upgrade", async (req, socket, head)=>{
        try {
            await upgradeHandler(req, socket, head);
        } catch (err) {
            socket.destroy();
            Log.error(`Failed to handle request for ${req.url}`);
            console.error(err);
        }
    });
    let portRetryCount = 0;
    server.on("error", (err)=>{
        if (allowRetry && port && isDev && err.code === "EADDRINUSE" && portRetryCount < 10) {
            Log.warn(`Port ${port} is in use, trying ${port + 1} instead.`);
            port += 1;
            portRetryCount += 1;
            server.listen(port, hostname);
        } else {
            Log.error(`Failed to start server`);
            console.error(err);
            process.exit(1);
        }
    });
    const isNodeDebugging = checkIsNodeDebugging();
    await new Promise((resolve)=>{
        server.on("listening", async ()=>{
            const addr = server.address();
            const actualHostname = formatHostname(typeof addr === "object" ? (addr == null ? void 0 : addr.address) || hostname || "localhost" : addr);
            const formattedHostname = !hostname || hostname === "0.0.0.0" ? "localhost" : actualHostname === "[::]" ? "[::1]" : actualHostname;
            port = typeof addr === "object" ? (addr == null ? void 0 : addr.port) || port : port;
            const appUrl = `http://${formattedHostname}:${port}`;
            if (isNodeDebugging) {
                const debugPort = getDebugPort();
                Log.info(`the --inspect${isNodeDebugging === "brk" ? "-brk" : ""} option was detected, the Next.js router server should be inspected at port ${debugPort}.`);
            }
            if (logReady) {
                Log.ready(`started server on ${actualHostname}:${port}, url: ${appUrl}`);
                // expose the main port to render workers
                process.env.PORT = port + "";
            }
            try {
                const cleanup = ()=>{
                    debug("start-server process cleanup");
                    server.close();
                    process.exit(0);
                };
                process.on("exit", cleanup);
                process.on("SIGINT", cleanup);
                process.on("SIGTERM", cleanup);
                process.on("uncaughtException", cleanup);
                process.on("unhandledRejection", cleanup);
                const initResult = await getRequestHandlers({
                    dir,
                    port,
                    isDev,
                    hostname,
                    minimalMode,
                    isNodeDebugging: Boolean(isNodeDebugging),
                    keepAliveTimeout,
                    experimentalTestProxy: !!isExperimentalTestProxy
                });
                requestHandler = initResult[0];
                upgradeHandler = initResult[1];
                handlersReady();
            } catch (err) {
                // fatal error if we can't setup
                handlersError();
                console.error(err);
                process.exit(1);
            }
            resolve();
        });
        server.listen(port, hostname);
    });
}

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