107 lines
4.0 KiB
JavaScript
107 lines
4.0 KiB
JavaScript
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"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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const http_1 = require("../utils/http");
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const crypto_md5_1 = __importDefault(require("crypto-md5"));
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const url_1 = require("../utils/url");
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const lodash_1 = require("lodash");
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const PARAM_RE = /^{(\S+)}$/;
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function buildRouteParamsMap(routeMatch, paramNames) {
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return paramNames.reduce((params, paramName, i) => {
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params[paramName] = routeMatch[i + 1];
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return params;
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}, {});
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}
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class Router {
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constructor(options = {}) {
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this.routes = new Map();
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this.routesWithParams = [];
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this.options = options;
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}
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_registerRoute(route, method, handler) {
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const tokens = route.split('/');
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const isRouteWithParams = tokens.some(token => PARAM_RE.test(token));
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if (isRouteWithParams && typeof handler === 'function')
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this._registerRouteWithParams(tokens, method, handler);
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else {
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const routeName = `${method} ${route}`;
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if (typeof handler !== 'function') {
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this._processStaticContent(handler);
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handler.etag = (0, crypto_md5_1.default)(handler.content);
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this.routes.set(routeName, { handler, isStatic: true });
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}
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else
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this.routes.set(routeName, { handler, isStatic: false });
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}
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}
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_prepareParamInfo(tokens, method) {
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const paramNames = [];
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const reParts = tokens.map(token => {
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const paramMatch = token.match(PARAM_RE);
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if (paramMatch) {
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paramNames.push(paramMatch[1]);
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return '(\\S+?)';
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}
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return token;
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});
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return {
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paramNames,
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re: new RegExp(`^${method} ${reParts.join('/')}$`),
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};
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}
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_registerRouteWithParams(tokens, method, handler) {
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const { paramNames, re } = this._prepareParamInfo(tokens, method);
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this.routesWithParams.push({ handler, paramNames, re });
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}
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_unregisterRouteWithParams(tokens, method) {
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const { paramNames, re } = this._prepareParamInfo(tokens, method);
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const routeIndex = this.routesWithParams.findIndex(routeWithParam => {
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return (0, lodash_1.isEqual)(routeWithParam.re, re) && (0, lodash_1.isEqual)(routeWithParam.paramNames, paramNames);
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});
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if (routeIndex !== -1)
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this.routesWithParams.splice(routeIndex, 1);
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}
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_route(req, res, serverInfo) {
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const routerQuery = `${req.method} ${(0, url_1.getPathname)(req.url || '')}`;
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const route = this.routes.get(routerQuery);
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if (route) {
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if (route.isStatic)
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(0, http_1.respondStatic)(req, res, route.handler, this.options.staticContentCaching);
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else
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route.handler(req, res, serverInfo);
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return true;
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}
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for (const routeWithParams of this.routesWithParams) {
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const routeMatch = routerQuery.match(routeWithParams.re);
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if (routeMatch) {
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const params = buildRouteParamsMap(routeMatch, routeWithParams.paramNames);
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routeWithParams.handler(req, res, serverInfo, params);
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return true;
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}
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}
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return false;
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}
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// API
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GET(route, handler) {
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this._registerRoute(route, 'GET', handler);
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}
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POST(route, handler) {
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this._registerRoute(route, 'POST', handler);
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}
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OPTIONS(route, handler) {
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this._registerRoute(route, 'OPTIONS', handler);
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}
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unRegisterRoute(route, method) {
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const tokens = route.split('/');
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const isRouteWithParams = tokens.some(token => PARAM_RE.test(token));
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if (isRouteWithParams)
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this._unregisterRouteWithParams(tokens, method);
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const routeName = `${method} ${route}`;
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this.routes.delete(routeName);
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}
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}
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exports.default = Router;module.exports = exports.default;
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