dipend-graph/handlers/request-handler.js

A library for generating a DAG (Directed Acyclic Graph) of dependencies registered in Dipend's dependency container.

/*
 * Copyright 2025 Saulo V. Alvarenga. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.RequestHandler = void 0;
const tslib_1 = require("tslib");
const fs_1 = tslib_1.__importDefault(require("fs"));
const path_1 = tslib_1.__importDefault(require("path"));
const SCRIPT_DIR = __dirname;
const DIRECTORY = path_1.default.join(SCRIPT_DIR, "../public");
class RequestHandler {
    graphDataHandler;
    constructor(graphDataHandler) {
        this.graphDataHandler = graphDataHandler;
    }
    apiDataRouteAction(res) {
        res.writeHead(200, { "Content-Type": "application/json" });
        const response = JSON.stringify(this.graphDataHandler.handle());
        res.end(response);
    }
    getContentType(filePath) {
        const ext = path_1.default.extname(filePath);
        const contentTypes = {
            ".html": "text/html",
            ".css": "text/css",
            ".js": "text/javascript",
            ".json": "application/json",
            ".png": "image/png",
            ".jpg": "image/jpeg",
        };
        return contentTypes[ext] || "application/octet-stream";
    }
    homeRouteAction(req, res) {
        let filePath = path_1.default.join(DIRECTORY, req.url === undefined || req.url === "/" ? "index.html" : req.url);
        fs_1.default.access(filePath, fs_1.default.constants.F_OK, (err) => {
            if (err)
                filePath = path_1.default.join(DIRECTORY, "index.html");
            fs_1.default.readFile(filePath, (error, content) => {
                if (error) {
                    res.writeHead(500, { "Content-Type": "text/plain" });
                    res.end("500 - Internal Server Error");
                }
                else {
                    res.writeHead(200, {
                        "Content-Type": this.getContentType(filePath),
                    });
                    res.end(content);
                }
            });
        });
    }
}
exports.RequestHandler = RequestHandler;