node_compression-app

src/createServer.js

@@ -1,8 +1,115 @@
 'use strict';
 
+const http = require('http');
+const formidable = require('formidable');
+const fs = require('fs');
+const zlib = require('zlib');
+
 function createServer() {
   /* Write your code here */
   // Return instance of http.Server class
+  const server = http.createServer((req, resp) => {
+    if (req.method === 'GET' && req.url === '/compress') {
+      resp.statusCode = 400;
+
+      return resp.end('request invalid');
+    }
+
+    if (req.method !== 'POST' || req.url !== '/compress') {
+      if (req.method === 'GET' && req.url === '/') {
+        resp.statusCode = 200;
+        resp.end();
+
+        return;
+      } else {
+        resp.statusCode = 404;
+
+        return resp.end('request invalid');
+      }
+    }
+
+    const form = new formidable.IncomingForm({
+      keepExtensions: true,
+      multiples: false,
+    });
+
+    form.parse(req, (erro, fields, files) => {
+      if (erro) {
+        resp.statusCode = 400;
+
+        return resp.end('data error');
+      }
+
+      // aqui recebo o arquivo
+      const nameFile = Array.isArray(files.file) ? files.file[0] : files.file;
+
+      // aqui recebo uma informação
+      const compressionTyp = Array.isArray(fields.compressionType)
+        ? fields.compressionType[0]
+        : fields.compressionType;
+
+      if (!nameFile) {
+        resp.statusCode = 400;
+
+        return resp.end('You must upload a file.');
+      }
+
+      const originalName = nameFile.originalFilename;
+      const caminhoTemp = nameFile.filepath;
+
+      const streamLeitura = fs.createReadStream(caminhoTemp);
+
+      switch (compressionTyp) {
+        case 'gzip':
+          const gzip = zlib.createGzip();
+
+          resp.statusCode = 200;
+          resp.setHeader('content-type', nameFile.mimetype);
+
+          resp.setHeader(
+            'content-disposition',
+            `attachment; filename=${originalName + '.gz'}`,
+          );
+
+          streamLeitura.pipe(gzip).pipe(resp);
+
+          break;
+        case 'deflate':
+          const def = zlib.createDeflate();
+
+          resp.statusCode = 200;
+          resp.setHeader('content-type', nameFile.mimetype);
+
+          resp.setHeader(
+            'content-disposition',
+            `attachment; filename=${originalName + '.dfl'}`,
+          );
+          streamLeitura.pipe(def).pipe(resp);
+
+          break;
+        case 'br':
+          const br = zlib.createBrotliCompress();
+
+          resp.statusCode = 200;
+          resp.setHeader('content-type', nameFile.mimetype);
+
+          resp.setHeader(
+            'content-disposition',
+            `attachment; filename=${originalName + '.br'}`,
+          );
+          streamLeitura.pipe(br).pipe(resp);
+
+          break;
+
+        default:
+          resp.statusCode = 400;
+
+          return resp.end('not suported');
+      }
+    });
+  });
+
+  return server;
 }
 
 module.exports = {