feat(rest api) Refactor rest api architecture + add dns lookup

jakoblind · Jun 16, 2019 · f6ca58d · f6ca58d
1 parent 2322c14
commit f6ca58d
Show file tree

Hide file tree

Showing 4 changed files with 99 additions and 86 deletions.
diff --git a/gatsby-node.js b/gatsby-node.js
@@ -6,92 +6,12 @@
 
 // You can delete this file if you're not using it
 const path = require(`path`)
-const https = require(`https`);
-const _ = require(`lodash`);
-// const dns = require(`dns`);
-
-
-function getTranspilersFromParams(params) {
-  const transpilerParams = params.transpiler ? params.transpiler.split(',') : [];
-  const transpilers = [];
-  if(transpilerParams.includes('babel')) {
-    transpilers.push('babel');
-  }
-  if(transpilerParams.includes('typescript')) {
-    transpilers.push('typescript');
-  }
-  if(!transpilers.length && params.mainLibrary === 'react') {
-    transpilers.push('babel');
-  }
-  return transpilers;
-}
-
-function getOptimizationFromParams(params, transpilers) {
-  const optiParams = params.optimization ? params.optimization.split(',') : [];
-  const optis = [];
-  if(optiParams.includes('code-split-vendors')) {
-    optis.push('code-split-vendors');
-  }
-  if(optiParams.includes('react-hot-loader') && params.mainLibrary === 'react' && !transpilers.includes('typescript')) {
-    optis.push('react-hot-loader');
-  }
-  return optis;
-}
-
-function getValuesFromParamsAvailables(param, availableParams) {
-  const valuesParam = param ? param.split(',') : null;
-  if(!valuesParam) {
-    return [];
-  }
-  return availableParams.filter((availableParam) => valuesParam.includes(availableParam));
-}
+const RestAPI = require(`./src/api/RestAPI`);
 
 exports.onCreateDevServer = ({ app }) => {
-
-  // let opt = {host: 'https://s3-qsfdsqfsqfdseu-west-1.amazonaws.com/jakoblind/zips-webpack/'};
-  // dns.lookup(opt.host, function (err, addr) {
-  //   if (err) {
-  //     // err code
-  //   } else {
-  //     // patches in the host header in order to please the HTTP/1.1 servers aka most of them
-  //     opt.headers.host = opt.host;
-  //     // makes the connection to the resolved address itself
-  //     opt.host = addr;
-  //     var req = https.request(opt);
-  //     // [...]
-  //   }
-  // });
-
-  app.get('/api/webpack/', function (req, res) {
-    const baseUrl = 'https://s3-eu-west-1.amazonaws.com/jakoblind/zips-webpack/';
-    // TODO rajouter _.default ==> if transpilers is undefined => error
-    const params = _.mapValues(req.query, (value) => typeof value === 'string' ? value.toLowerCase() : '');
-
-    let baseProjectLib = (params.mainLibrary === 'react' || params.mainLibrary === 'vue') ? params.mainLibrary : '';
-
-    const transpilers = getTranspilersFromParams(params);
-    const styling = getValuesFromParamsAvailables(params.styling, ['css', 'css-modules', 'sass', 'less']);
-    const images = getValuesFromParamsAvailables(params.image, ['svg', 'png']);
-    const utilities = getValuesFromParamsAvailables(params.utilities, ['lodash', 'moment']);
-    const optimizations = getOptimizationFromParams(params, transpilers);
-
-    const features = _.concat(_.sortBy(_.concat(transpilers, styling, images, optimizations, baseProjectLib)), utilities);
-    const filename = `empty-project-${ _.kebabCase(features)}.zip`;
-
-    let url = `${baseUrl}${filename}`;
-    console.log('URL: ', url);
-    res.send(url);
-    https.get(url, function(resultFile) {
-      if(resultFile.statusCode !== 200) {
-        res.status(404);
-        return;
-      }
-      res.setHeader('Content-Type','application/zip');
-      res.setHeader('Content-Disposition',`attachment; filename=${filename}`);
-      resultFile.pipe(res);
-    });
-  })
-}
+  const restAPI = new RestAPI();
+  restAPI.init(app);
+};
 
 exports.createPages = ({ graphql, actions }) => {
   const { createPage } = actions

diff --git a/src/api/RestAPI.js b/src/api/RestAPI.js
@@ -0,0 +1,56 @@
+const https = require('https');
+const dns = require( 'dns');
+const _ = require('lodash');
+const RestAPIUtils = require('../utils/RestAPIUtils');
+
+const DOWNLOAD_PROEJECT_DOMAIN = 's3-eu-west-1.amazonaws.com';
+const BASE_DOWNLOAD_PROJECT_WEBPACK_URL = `https://${DOWNLOAD_PROEJECT_DOMAIN}/jakoblind/zips-webpack/`;
+
+class RestAPI {
+  init(app) {
+    this.checkDnsAccessibility();
+    app.get('/api/webpack/', this.getProject.bind(this));
+  }
+
+  getProject(req, res) {
+    if(!this.isAccessibleDomain) {
+      res.status(503).send('Resource unreachable');
+      return;
+    }
+
+    const params = _.mapValues(req.query, (value) => typeof value === 'string' ? value.toLowerCase() : '');
+    const baseProjectLib = (params['main-library'] === 'react' || params['main-library'] === 'vue') ? params['main-library'] : '';
+    const transpilers = RestAPIUtils.getTranspilersFromParams(params);
+    const styling = RestAPIUtils.getAvailablesValuesFromParams(params.styling, ['css', 'css-modules', 'sass', 'less']);
+    const images = RestAPIUtils.getAvailablesValuesFromParams(params.image, ['svg', 'png']);
+    const utilities = RestAPIUtils.getAvailablesValuesFromParams(params.utilities, ['lodash', 'moment']);
+    const optimizations = RestAPIUtils.getOptimizationFromParams(params, transpilers);
+
+    const features = _.concat(_.sortBy(_.concat(transpilers, styling, images, optimizations, baseProjectLib)), utilities);
+    const filename = `empty-project-${ _.kebabCase(features)}.zip`;
+
+    const url = `${BASE_DOWNLOAD_PROJECT_WEBPACK_URL}${filename}`;
+    https.get(url, function(resultFile) {
+      if(resultFile.statusCode !== 200) {
+        res.status(404).send('File not found');
+        return;
+      }
+      res.setHeader('Content-Type','application/zip');
+      res.setHeader('Content-Disposition',`attachment; filename=${filename}`);
+      resultFile.pipe(res);
+    });
+  }
+
+  checkDnsAccessibility() {
+    dns.lookup(DOWNLOAD_PROEJECT_DOMAIN, (err) => {
+      if (err) {
+        this.isAccessibleDomain = false;
+        console.error(`Domain ${DOWNLOAD_PROEJECT_DOMAIN} is unreachable`);
+        return;
+      }
+      this.isAccessibleDomain = true;
+    })
+  }
+}
+
+module.exports = RestAPI;
diff --git a/src/pages/index.js b/src/pages/index.js
@@ -375,8 +375,6 @@ function Configurator(props) {
   const isTypescript = _.includes(selectedArray, 'Typescript')
 
   const projectname = getDefaultProjectName('empty-project', selectedArray)
-  console.log('Selected array: ', selectedArray);
-  console.log('Project name: ', projectname);
 
   const {
     featureConfig,

diff --git a/src/utils/RestAPIUtils.js b/src/utils/RestAPIUtils.js
@@ -0,0 +1,39 @@
+
+class RestAPIUtils {
+  static getTranspilersFromParams(params) {
+    const transpilerParams = params.transpiler ? params.transpiler.split(',') : [];
+    const transpilers = [];
+    if(transpilerParams.includes('babel')) {
+      transpilers.push('babel');
+    }
+    if(transpilerParams.includes('typescript')) {
+      transpilers.push('typescript');
+    }
+    if(!transpilers.length && params['main-library'] === 'react') {
+      transpilers.push('babel');
+    }
+    return transpilers;
+  }
+
+  static getOptimizationFromParams(params, transpilers) {
+    const optiParams = params.optimization ? params.optimization.split(',') : [];
+    const optis = [];
+    if(optiParams.includes('code-split-vendors')) {
+      optis.push('code-split-vendors');
+    }
+    if(optiParams.includes('react-hot-loader') && params['main-library'] === 'react' && !transpilers.includes('typescript')) {
+      optis.push('react-hot-loader');
+    }
+    return optis;
+  }
+
+  static getAvailablesValuesFromParams(param, availableValues) {
+    const valuesParam = param ? param.split(',') : null;
+    if(!valuesParam) {
+      return [];
+    }
+    return availableValues.filter((availableParam) => valuesParam.includes(availableParam));
+  }
+}
+
+module.exports = RestAPIUtils;