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@@ -0,0 +1,94 @@
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+
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+
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+'use strict';
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+
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+const fs = require('fs');
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+const path = require('path');
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+
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+class SimpleServerHelper {
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+ constructor(config, request, response) {
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+ this.settings = {
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+ ...{
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+ publicFolder: 'public',
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+ htmlIndexPath: 'public/index.html',
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+ html404Path: 'public/404.html',
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+ verbose: false,
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+ allowedFiles: {
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+ txt: 'text/plain',
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+ json: 'text/json',
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+ css: 'text/css',
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+ gif: 'image/gif',
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+ jpg: 'image/jpeg',
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+ png: 'image/png',
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+ svg: 'image/svg+xml',
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+ ico: 'image/ico',
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+ js: 'application/javascript',
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+ html: 'text/html',
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+ },
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+ },
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+ ...config
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+ };
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+ this.request = request;
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+ this.response = response;
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+ const uri = request.url.toLowerCase();
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+ const publicPath = path.join(__dirname, this.settings.publicFolder);
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+ this.mimeType = this.getType(uri);
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+ this.filePath = this.isHtml() ? this.settings.htmlIndexPath : publicPath + uri;
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+ }
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+
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+ getType(path) {
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+ if (path == '/') return this.settings.allowedFiles['html'];
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+ const extension = path.split('.').pop().split('?').shift();
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+ return this.settings.allowedFiles[extension];
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+ }
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+
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+ isHtml() {
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+ return this.mimeType == this.settings.allowedFiles['html'];
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+ }
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+
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+ isValid() {
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+ return this.isHtml() || this.fileExist();
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+ }
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+
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+ fileExist() {
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+ let exists = false
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+ try {
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+ exists = fs.existsSync(this.filePath);
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+ } catch (error) {
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+ if (this.settings.verbose) console.error(error);
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+ }
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+ return exists;
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+ }
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+
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+ handleLogs(isValid) {
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+ if (this.settings.verbose) {
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+ if (isValid) console.info(new Date().toString() + ' ' + this.filePath);
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+ else console.error('Error accessing ' + this.request.url);
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+ }
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+ }
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+
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+ writeHead(isValid) {
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+ if (isValid) {
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+ this.response.writeHead(200, {
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+ 'Cache-Control': 'max-age=31536000',
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+ 'Content-Type': this.mimeType
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+ });
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+ } else {
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+ this.response.writeHead(404, {
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+ 'Content-Type': this.settings.allowedFiles['html']
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+ });
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+ }
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+ }
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+
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+ respond() {
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+ const isValid = this.isValid();
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+ this.writeHead(isValid);
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+ isValid ? fs.createReadStream(this.filePath).pipe(this.response)
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+ : fs.createReadStream(this.settings.html404Path).pipe(this.response);
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+ this.handleLogs(isValid);
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+ }
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+};
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+
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+module.exports = {
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+ SimpleServerHelper
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+};
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Herton
