/**
 * Core Server
 */ import cluster from "node:cluster";
import * as fs from "node:fs";
import * as http from "node:http";
import * as https from "node:https";
import Koa from "koa";
import Router from "@koa/router";
import cors from "@koa/cors";
import mount from "koa-mount";
import koaLogger from "koa-logger";
import * as slow from "koa-slow";
import { IsNull } from "typeorm";
import config from "../config/index.js";
import Logger from "../services/logger.js";
import { Users } from "../models/index.js";
import { fetchMeta } from "../misc/fetch-meta.js";
import { genIdenticon } from "../misc/gen-identicon.js";
import { createTemp } from "../misc/create-temp.js";
import * as Acct from "../misc/acct.js";
import { envOption } from "../env.js";
import activityPub from "./activitypub.js";
import nodeinfo from "./nodeinfo.js";
import wellKnown from "./well-known.js";
import apiServer from "./api/index.js";
import fileServer from "./file/index.js";
import proxyServer from "./proxy/index.js";
import webServer from "./web/index.js";
import { initializeStreamingServer } from "./api/streaming.js";
import removeTrailingSlash from "koa-remove-trailing-slashes";
import { koaBody } from "koa-body";
import { setupEndpointsAuthRoot } from "./api/mastodon/endpoints/auth.js";
import { CatchErrorsMiddleware } from "./api/mastodon/middleware/catch-errors.js";
import { handleMetrics } from "../metrics.js";
import { isIgnorableConnectionError } from "./is-ignorable-connection-error.js";
export const serverLogger = new Logger("server", "gray", false);
// Init app
const app = new Koa();
app.proxy = true;
app.on("error", (err)=>{
    if (isIgnorableConnectionError(err)) return;
    serverLogger.error(err);
});
app.use(removeTrailingSlash());
app.use(cors({
    origin: "*"
}));
if (![
    "production",
    "test"
].includes(process.env.NODE_ENV || "")) {
    // Logger
    app.use(koaLogger((str)=>{
        serverLogger.info(str);
    }));
    // Delay
    if (envOption.slow) {
        app.use(slow({
            delay: 3000
        }));
    }
}
// HSTS
// 6months (15552000sec)
if (config.url.startsWith("https") && !config.disableHsts) {
    app.use(async (ctx, next)=>{
        ctx.set("strict-transport-security", "max-age=15552000; preload");
        await next();
    });
}
app.use(mount("/api", apiServer));
app.use(mount("/files", fileServer));
app.use(mount("/proxy", proxyServer));
// Init router
const router = new Router();
const mastoRouter = new Router();
// Routing
router.use(activityPub.routes());
router.use(nodeinfo.routes());
router.use(wellKnown.routes());
router.get("/avatar/@:acct", async (ctx)=>{
    const { username, host } = Acct.parse(ctx.params.acct);
    const user = await Users.findOne({
        where: {
            usernameLower: username.toLowerCase(),
            host: host == null || host === config.host || host === config.domain ? IsNull() : host,
            isSuspended: false
        },
        relations: [
            "avatar"
        ]
    });
    if (user) {
        ctx.redirect(Users.getAvatarUrlSync(user));
    } else {
        ctx.redirect("/static-assets/user-unknown.png");
    }
});
router.get("/identicon/:x", async (ctx)=>{
    const meta = await fetchMeta();
    if (meta.enableIdenticonGeneration) {
        const [temp, cleanup] = await createTemp();
        await genIdenticon(ctx.params.x, fs.createWriteStream(temp));
        ctx.set("Content-Type", "image/png");
        ctx.body = fs.createReadStream(temp).on("close", ()=>cleanup());
    } else {
        ctx.redirect("/static-assets/avatar.png");
    }
});
if (config.metrics?.enable) {
    router.get("/metrics", handleMetrics);
}
mastoRouter.use(koaBody({
    urlencoded: true,
    multipart: true
}));
mastoRouter.use(async (ctx, next)=>{
    if (ctx.request.query) {
        if (!ctx.request.body || Object.keys(ctx.request.body).length === 0) {
            ctx.request.body = ctx.request.query;
        } else {
            ctx.request.body = {
                ...ctx.request.body,
                ...ctx.request.query
            };
        }
    }
    await next();
});
mastoRouter.use(CatchErrorsMiddleware);
setupEndpointsAuthRoot(mastoRouter);
// Register router
app.use(router.routes());
app.use(mastoRouter.routes());
app.use(mount(webServer));
function createServer() {
    if (config.tls?.keyPath && config.tls?.certPath) {
        return https.createServer({
            key: fs.readFileSync(config.tls.keyPath),
            cert: fs.readFileSync(config.tls.certPath)
        }, app.callback());
    }
    return http.createServer(app.callback());
}
// For testing
export const startServer = ()=>{
    const server = createServer();
    initializeStreamingServer(server);
    server.listen(config.port, config.listen);
    return server;
};
export default (()=>new Promise((resolve)=>{
        const server = createServer();
        initializeStreamingServer(server);
        server.on("error", (e)=>{
            if (isIgnorableConnectionError(e)) return;
            switch(e.code){
                case "EACCES":
                    serverLogger.error(`You do not have permission to listen on port ${config.port}.`);
                    break;
                case "EADDRINUSE":
                    serverLogger.error(`Port ${config.port} is already in use by another process.`);
                    break;
                default:
                    serverLogger.error(e);
                    break;
            }
            if (cluster.isWorker) {
                process.send("listenFailed");
            } else {
                // disableClustering
                process.exit(1);
            }
        });
        // @ts-ignore
        server.listen(config.port, config.listen, resolve);
    }));
