Initial commit

.babelrc

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+{
+  "presets": ["es2015"]
+}

.gitignore

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+node_modules/
+lib/
+.deps/
+.idea/
+*.log

package.json

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+{
+  "name": "goes-install",
+  "version": "0.2.0",
+  "description": "Install GoES for your platform using npm",
+  "main": "lib/index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "postinstall": "node ./lib/index.js",
+    "build": "babel src -d lib",
+    "prepublish": "npm run build",
+    "start": "npm run build && npm run postinstall"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/nicdex/npm-goes.git"
+  },
+  "keywords": [
+    "goes",
+    "install",
+    "npm"
+  ],
+  "author": "Nicolas Dextraze <nicdex@yahoo.com>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/nicdex/goes-install/issues"
+  },
+  "homepage": "https://github.com/nicdex/goes-install#readme",
+  "devDependencies": {
+    "babel-cli": "^6.14.0",
+    "babel-preset-es2015": "^6.14.0"
+  },
+  "dependencies": {
+    "mkdirp": "^0.5.1",
+    "unzip": "^0.1.11"
+  }
+}

src/index.js

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+'use strict';
+
+import https from 'https';
+import os from 'os';
+import path from 'path';
+import fs from 'fs';
+import unzip from 'unzip';
+import mkdirp from 'mkdirp';
+
+const config = {
+  versionToDownload: '20160923',
+  urlBase: 'https://nicdex.com/files/goes/'
+};
+
+// supported platforms: darwin, linux, win32
+// supported architecture: x64
+function detect() {
+  console.log('Detecting platform...');
+  const { platform, arch } = process;
+  if (platform !== 'win32' && platform !== 'linux') {
+    return Promise.reject(new Error('Only Windows and Linux are supported for now.'));
+  }
+  if (arch !== 'x64') {
+    return Promise.reject(new Error('Only x64 processor architecture is supported.'));
+  }
+  const ext = platform === 'win32' ? 'zip' : 'tar.gz';
+  const { versionToDownload, urlBase } = config;
+  const fileName = `goes-${platform}-${arch}-${versionToDownload}.${ext}`;
+  const tmpdir = os.tmpdir();
+  const pathsep = path.sep;
+  const options = {
+    platform,
+    arch,
+    ext,
+    fileName,
+    remoteUrl: `${urlBase}${fileName}`,
+    localPath: `${tmpdir}${pathsep}${fileName}`
+  };
+  console.log(`- Platform: ${platform}\n- Architecture: ${arch}\n`);
+  return Promise.resolve(options);
+}
+
+function download(options) {
+  return new Promise((resolve, reject) => {
+    console.log('Downloading archive from server...');
+    const {remoteUrl, localPath, fileName} = options;
+    const fileStream = fs.createWriteStream(localPath);
+    fileStream.on('error', err => reject(err));
+    fileStream.on('finish', () => {
+      console.log(`- Downloaded ${fileName}\n`);
+      resolve(options);
+    });
+    https.get(remoteUrl, (res) => {
+      if (res.statusCode !== 200) return reject(new Error(`Request failed: GET ${remoteUrl} returned ${res.statusCode}.`));
+      res.pipe(fileStream);
+    }).on('error', (err) => {
+      reject(new Error(`Failed to download archive from ${remoteUrl}. ${err}`));
+    });
+  });
+}
+
+function install(options) {
+  return new Promise((resolve, reject) => {
+    console.log('Installing GoES...');
+    const destParts = ['.deps', 'goes'];
+    if (options.platform === 'win32') {
+      destParts.push('bin');
+    }
+    const destPath = destParts.join(path.sep);
+    mkdirp(destPath, err => {
+      if (err) return reject(err);
+      fs.createReadStream(options.localPath)
+        .pipe(unzip.Extract({ path: destPath })
+        .on('finish', () => {
+          console.log(`- GoES ${config.version} installed in .deps${path.sep}goes\n`);
+        }))
+        .on('error', reject);
+    });
+  });
+}
+
+detect()
+  .then(download)
+  .then(install)
+  .catch(err => {
+    console.log(err.message);
+    process.exit(-1);
+  });