serman/src/index.ts

import express, { json, NextFunction, Request, Response, urlencoded } from "express";
import { RegisterRoutes } from "../build/routes";
import { HtmlController } from "./routes/htmlControllers";
import swaggerUi from "swagger-ui-express";
import { engine } from 'express-handlebars';
import path from "path";
import ConfigurationManager from "./config";
import slavery from "./slavery";
import {UnauthorizedMasterApiKey} from "./models/unauthorizedApi";

(async () => {
    if (process.argv.indexOf("--generate-key") > 0) {
        await slavery.generateKey();
        process.exit(0);
    }

    const app = express();

    if (!ConfigurationManager.slave) {
        // Whiskers html template
        app.engine('handlebars', engine());
        app.set('view engine', 'handlebars');
        app.set('views', path.join(__dirname, '../templates'));
    }

    // Swagger UI
    app.use("/api-docs", swaggerUi.serve, swaggerUi.setup(require(path.join(__dirname, "../build/swagger.json"))));

    // API routes
    app.use(
        urlencoded({
            extended: true,
        })
    );
    app.use(json());
    if (!ConfigurationManager.slave)
        HtmlController.RegisterHtmlPages(app);
    RegisterRoutes(app);

    // Error handling
    app.use((err: unknown,
        _req: Request,
        res: Response,
        next: NextFunction) => {
            if (err instanceof UnauthorizedMasterApiKey) {
                return res.status(403).json({
                    message: "Api key validation failed"
                });
            }
            else if (err instanceof Error) {
                return res.status(500).json({
                    message: err.message
                });
            }
            next();
            return;
        });

    // Static resources
    if (!ConfigurationManager.slave) {
        app.use("/js/front.js", express.static(path.join(__dirname, "../build/"), {index: 'front.js'}));
        app.use("/js/front.min.js", express.static(path.join(__dirname, "../build/"), {index: 'front.min.js'}));
        app.use("/js/front.js.map", express.static(path.join(__dirname, "../build/"), {index: 'front.js.map'}));
        app.use("/js/front.min.js.map", express.static(path.join(__dirname, "../build/"), {index: 'front.min.js.map'}));
        app.use(express.static(path.join(__dirname, 'public')));
    }

    app.listen(ConfigurationManager.port,
        () => console.log(`Server listening on port ${ConfigurationManager.port}.`))
        .on("error", (error) => {
            throw new Error(error.message);
        });
})();