org.crazydoctor.expressts/dist/server/Server.js

"use strict";
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    });
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    return (mod && mod.__esModule) ? mod : { "default": mod };
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Object.defineProperty(exports, "__esModule", { value: true });
exports.Server = void 0;
const express_1 = __importDefault(require("express"));
const http_1 = require("../base/http");
const exceptions_1 = require("../base/exceptions");
const exceptions_2 = require("../base/exceptions");
const logger_1 = require("../base/logger");
const i18n_1 = require("../base/i18n");
const path_1 = __importDefault(require("path"));
const fs_1 = __importDefault(require("fs"));
const http_2 = __importDefault(require("http"));
const ws_1 = require("ws");
const exceptions_3 = require("../base/exceptions");
const exceptions_4 = require("../base/exceptions");
const exceptions_5 = require("../base/exceptions");
const websocket_1 = require("../base/websocket");
const swagger_jsdoc_1 = __importDefault(require("swagger-jsdoc"));
const swagger_ui_express_1 = __importDefault(require("swagger-ui-express"));
/** @sealed */
class Server {
    constructor(properties) {
        var _a, _b, _c, _d, _e;
        this.instance = (0, express_1.default)();
        this.httpServer = http_2.default.createServer(this.instance);
        this.port = properties.port;
        this.host = properties.host || `http://localhost:${this.port}`;
        this.i18n = i18n_1.i18nLoader.getInstance();
        if (properties.locale)
            this.i18n.setLocale(properties.locale);
        this.logger = new logger_1.Logger();
        this.httpHandlers = {};
        this.wsHandlers = properties.wsHandlers || {};
        this.wsServers = {};
        this.i18nPath = properties.i18nPath;
        this.middlewaresPath = properties.middlewaresPath;
        this.routesPath = properties.routesPath;
        this.viewEngine = properties.viewEngine;
        this.viewsPath = properties.viewsPath;
        this.options = properties.options;
        if (properties.swagger) {
            this.swaggerDocsPath = (_a = properties.swagger) === null || _a === void 0 ? void 0 : _a.docsPath;
            this.swaggerTitle = ((_b = properties.swagger) === null || _b === void 0 ? void 0 : _b.title) || 'API Documentation';
            this.swaggerDescription = ((_c = properties.swagger) === null || _c === void 0 ? void 0 : _c.description) || 'API Documentation';
            this.swaggerApiVersion = ((_d = properties.swagger) === null || _d === void 0 ? void 0 : _d.version) || '1.0.0';
            this.swaggerRoute = ((_e = properties.swagger) === null || _e === void 0 ? void 0 : _e.route) || '/api-docs';
        }
        this.initialized = false;
    }
    init() {
        return __awaiter(this, void 0, void 0, function* () {
            if (this.viewEngine)
                this.instance.set('view engine', this.viewEngine);
            if (this.viewsPath)
                this.instance.set('views', this.viewsPath);
            this.i18n.load(path_1.default.resolve(__dirname, Server.i18nDefaultPath));
            yield this.registerMiddlewares(path_1.default.resolve(__dirname, Server.defaultMiddlewaresPath));
            yield this.registerRoutes(path_1.default.resolve(__dirname, Server.defaultRoutesPath));
            yield this.postInit();
            this.initialized = true;
            return this;
        });
    }
    postInit() {
        return __awaiter(this, void 0, void 0, function* () {
            if (this.i18nPath)
                this.i18n.load(this.i18nPath);
            if (this.middlewaresPath)
                yield this.registerMiddlewares(this.middlewaresPath);
            if (this.routesPath)
                yield this.registerRoutes(this.routesPath);
            if (this.swaggerDocsPath)
                fs_1.default.writeFileSync(this.swaggerDocsPath, '');
            if (Object.keys(this.wsHandlers).length > 0) {
                this.registerWsServers();
                this.applyWsHandlers();
            }
        });
    }
    processHttpHandlers() {
        const handlers = [];
        for (const key in this.httpHandlers)
            handlers.push(this.httpHandlers[key]);
        handlers.sort((a, b) => a.getOrder() - b.getOrder());
        for (const handler of handlers) {
            if (handler instanceof http_1.Middleware)
                this.addMiddleware(handler);
            else if (handler instanceof http_1.Route)
                this.addRoute(handler);
        }
    }
    addMiddleware(middleware) {
        if (middleware.getRoute() != null)
            this.instance.use(middleware.getRoute(), middleware.getAction());
        else
            this.instance.use(middleware.getAction());
        return this;
    }
    addRoute(route) {
        if (route.getRoute() == null)
            throw new exceptions_1.RouteNotSetException();
        switch (route.getMethod()) {
            case http_1.HttpMethod.GET:
                return this.get(route);
            case http_1.HttpMethod.POST:
                return this.post(route);
            default:
                throw new exceptions_2.IncorrectMethodException();
        }
    }
    registerRoutesDocumentation() {
        for (const routeName in this.httpHandlers) {
            const route = this.httpHandlers[routeName];
            if (!(route instanceof http_1.Route))
                continue;
            if (route.getRoute() == null)
                throw new exceptions_1.RouteNotSetException();
            if (![http_1.HttpMethod.GET, http_1.HttpMethod.POST].includes(route.getMethod()))
                throw new exceptions_2.IncorrectMethodException();
            const docs = route.getDocumentation();
            if (this.swaggerDocsPath && docs.length > 0) {
                fs_1.default.appendFileSync(this.swaggerDocsPath, `${docs}\n`);
                this.logInfo(`Swagger documentation for route '${route.getRoute()}' generated!`);
            }
        }
        return this;
    }
    registerWsServers() {
        for (const url of Object.keys(this.wsHandlers)) {
            const wsServer = this.wsServers[url] = new ws_1.Server({ noServer: true });
            const wsHandler = this.wsHandlers[url];
            wsServer.on(websocket_1.WebSocketHandler.Event.CONNECTION, (ws) => {
                wsHandler.onConnect(ws);
                ws.on(websocket_1.WebSocketHandler.Event.MESSAGE, wsHandler.onMessage);
                ws.on(websocket_1.WebSocketHandler.Event.ERROR, wsHandler.onError);
                ws.on(websocket_1.WebSocketHandler.Event.CLOSE, wsHandler.onClose);
            });
        }
        return this;
    }
    applyWsHandlers() {
        this.httpServer.on('upgrade', (request, socket, head) => {
            var _a;
            const url = (_a = request.url) === null || _a === void 0 ? void 0 : _a.split('?')[0];
            if (url && this.wsHandlers[url] && this.wsServers[url]) {
                const wsServer = this.wsServers[url];
                wsServer.handleUpgrade(request, socket, head, (ws) => {
                    wsServer.emit(websocket_1.WebSocketHandler.Event.CONNECTION, ws, request);
                });
            }
            else {
                socket.destroy();
            }
        });
        return this;
    }
    getWsConnections(url) {
        const wsServer = this.wsServers[url];
        return wsServer ? wsServer.clients : null;
    }
    logInfo(message) {
        this.logger.getLogger().info(message);
    }
    logError(message) {
        this.logger.getLogger().error(message);
    }
    logWarn(message) {
        this.logger.getLogger().warn(message);
    }
    log(message) {
        switch (message.type) {
            case logger_1.MessageTypes.WARNING:
                return this.logWarn(message.text);
            case logger_1.MessageTypes.ERROR:
                return this.logError(message.text);
            default:
                return this.logInfo(message.text);
        }
    }
    get(route) {
        this.instance.get(route.getRoute(), route.getAction());
        return this;
    }
    post(route) {
        this.instance.post(route.getRoute(), route.getAction());
        return this;
    }
    registerSwaggerMiddleware() {
        if (!this.swaggerDocsPath)
            return this;
        const swaggerOptions = {
            swaggerDefinition: {
                openapi: '3.0.0',
                info: {
                    title: this.swaggerTitle,
                    version: this.swaggerApiVersion,
                    description: this.swaggerDescription,
                },
                servers: [
                    { url: this.host }
                ],
            },
            apis: [this.swaggerDocsPath],
        };
        const swaggerDocs = (0, swagger_jsdoc_1.default)(swaggerOptions);
        this.instance.use(this.swaggerRoute, swagger_ui_express_1.default.serve, swagger_ui_express_1.default.setup(swaggerDocs));
        return this;
    }
    registerRoutes(dir) {
        return __awaiter(this, void 0, void 0, function* () {
            const files = fs_1.default.readdirSync(dir, { recursive: true, encoding: 'utf8' });
            for (const file of files) {
                if (/\.js$/.test(file)) {
                    const { default: RouteClass } = yield Promise.resolve(`${path_1.default.join(dir, file)}`).then(s => __importStar(require(s)));
                    if (RouteClass.prototype instanceof http_1.Route) {
                        this.httpHandlers[RouteClass.name] = new RouteClass(this);
                    }
                    else
                        throw new exceptions_4.InvalidRouteException(file);
                }
            }
            return this;
        });
    }
    registerMiddlewares(dir) {
        return __awaiter(this, void 0, void 0, function* () {
            const files = fs_1.default.readdirSync(dir, { recursive: true, encoding: 'utf8' });
            for (const file of files) {
                if (/\.js$/.test(file)) {
                    const { default: MiddlewareClass } = yield Promise.resolve(`${path_1.default.join(dir, file)}`).then(s => __importStar(require(s)));
                    if (MiddlewareClass.prototype instanceof http_1.Middleware) {
                        this.httpHandlers[MiddlewareClass.name] = new MiddlewareClass(this);
                    }
                    else
                        throw new exceptions_3.InvalidMiddlewareException(file);
                }
            }
            return this;
        });
    }
    getLogger() {
        return this.logger;
    }
    i18nLoad(path) {
        this.i18n.load(path);
        return this;
    }
    getHost() {
        return this.host;
    }
    getOption(key) {
        return this.options ? this.options[key] || null : null;
    }
    start(callback) {
        if (!this.initialized)
            throw new exceptions_5.ServerNotInitializedException();
        this.registerRoutesDocumentation();
        this.registerSwaggerMiddleware();
        this.processHttpHandlers();
        const cb = () => {
            this.logInfo((0, i18n_1.$$)('org.crazydoctor.expressts.start', { 'port': this.port }));
            if (callback)
                callback();
        };
        this.httpServer.listen(this.port, cb);
    }
}
exports.Server = Server;
Server.i18nDefaultPath = '../resources/i18n.json';
Server.defaultMiddlewaresPath = '../middlewares';
Server.defaultRoutesPath = '../routes';
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