import constants from "constants";
import cors from "cors";
import { CronJob } from "cron";
import express, {
    type NextFunction,
    type Request,
    type Response,
} from "express";
import fs from "fs";
import https from "https";
import { RegisterRoutes } from "./generated/routes.js";
import { inject } from "./infrastructure/di/injector.js";
import { sessionHandler } from "./infrastructure/sessionHandler.js";
import { EnvironmentService } from "./services/environmentService.js";
import { FoundEventsService } from "./services/foundEvents/foundEventsService.js";
import { KeycloakUser } from "./services/keycloak/user/keycloak-user.js";
import { PushService } from "./services/push/pushService.js";
// import helmet from "helmet";
// TODO import http2 from 'http2';

async function run() {
    const app = express();
    const keycloakUser = inject(KeycloakUser);

    //TODO app.use(helmet.hsts()); this and other helmets
    app.use(
        cors({
            origin: [
                "https://taekwondo-chemnitz.toni714.de",
                "https://tcc-1-ev-intern.web.app",
                "http://localhost:4200",
                "https://localhost:4200",
                "http://localhost:8080",
            ],
            methods: ["GET", "POST", "PUT", "DELETE", "OPTIONS"],
            //TODO reevaluate
        }),
    );
    app.use(sessionHandler);

    app.use(await keycloakUser.middleware());

    app.use(express.urlencoded({ extended: true }));
    app.use(express.json());

    RegisterRoutes(app);

    const environment = inject(EnvironmentService);
    // wants to be last
    app.use(
        (err: unknown, _req: Request, res: Response, _next: NextFunction) => {
            console.dir(err);
            const ex = JSON.stringify(err);
            res.header("Content-Length", `${ex.length}`);
            res.status(500).send(ex);
            throw err;
        },
    );

    const isDev = environment.isDev();

    let cert: https.ServerOptions["cert"];
    let key: https.ServerOptions["key"];
    let SSL_KEY_PASSWORD: string | undefined;
    let port: number;

    if (isDev) {
        //TODO start with HTTPS in dev
        // cert = fs.readFileSync("src/cert.pem");
        // key = fs.readFileSync("src/key.pem");

        port = 3000;
        const server = app.listen(port, error => {
            if (error) {
                console.error("Startup crashed:", error);
            }
            console.log(`Server is running at http://localhost:${port}`);
        });
        server.on("close", () => stopCron());
    } else {
        port = 5443;
        const SSL_CERT_PATH = process.env["SSL_CERT_PATH"];
        const SSL_KEY_PATH = process.env["SSL_KEY_PATH"];
        SSL_KEY_PASSWORD = process.env["SSL_KEY_PASSWORD"];
        if (!SSL_CERT_PATH || !SSL_KEY_PATH || !SSL_KEY_PASSWORD) {
            throw new Error("Missing SSL configuration");
        }

        cert = fs.readFileSync(SSL_CERT_PATH);
        key = fs.readFileSync(SSL_KEY_PATH);

        const sslOptions: https.ServerOptions = {
            cert: cert,
            key: key,
            passphrase: SSL_KEY_PASSWORD,
            minVersion: "TLSv1.3",
            maxVersion: "TLSv1.3",
            ecdhCurve: "X25519:prime256v1:secp384r1",
            honorCipherOrder: false,
            secureOptions:
                constants.SSL_OP_NO_TLSv1 |
                constants.SSL_OP_NO_TLSv1_1 |
                constants.SSL_OP_NO_TLSv1_2 |
                constants.SSL_OP_NO_SSLv2 |
                constants.SSL_OP_NO_SSLv3,
        };
        const server = https.createServer(sslOptions, app).listen(port, () => {
            console.log(`Server is running on port ${port}`);
        });
        server.on("close", () => stopCron());
    }

    // const h2SslOptions={};
    // http2.createServer(h2SslOptions, app).listen(port, ()=>{
    //     console.log(`HTTP/2 server is running on port ${port}`);
    // })
    initJobs();
    startCron();

    console.log("setup done");
}

const jobs: CronJob[] = [];

function initJobs() {
    const eventsService = inject(FoundEventsService);
    const crawlJob = CronJob.from({
        cronTime: "35 4 * * *",
        onTick: async () => {
            await eventsService.crawl();
        },
    });
    jobs.push(crawlJob);

    const pushService = inject(PushService);
    const notifyJob = CronJob.from({
        cronTime: "10 12 * * *",
        onTick: async () => {
            await pushService.sendEventNotifications();
        },
    });
    jobs.push(notifyJob);
}

function startCron() {
    console.log("starting jobs");
    for (const job of jobs) {
        job.start();
    }
}

async function stopCron() {
    console.log("stopping jobs");
    for (const job of jobs) {
        job.stop();
    }
}

run();