build scripts for copay shell binaries

shell/scripts/lib/download.js

@@ -0,0 +1,102 @@
+var path    = require('path');
+var fs      = require('fs');
+var GitHub  = require('github-releases');
+var async   = require('async');
+var readl   = require('readline');
+var color   = require('cli-color');
+var github  = new GitHub({ repo: 'atom/atom-shell' });
+var exec    = require('child_process').exec;
+var os      = require('os');
+
+var Static = function() {
+
+  return {
+    atom: function(version, platform, arch, callback) {
+      var targetRoot = path.normalize(__dirname + '/../bin/'),
+        target  = path.normalize(__dirname + '/../bin/' + platform);
+
+      console.log(color.blue('{copay}'), 'Downloading atom-shell ' + version + ' ' + platform + '-' + arch);
+
+      if(!fs.existsSync(targetRoot)) {
+        fs.mkdirSync(targetRoot);
+      }
+
+      if (!fs.existsSync(target)) {
+        fs.mkdirSync(target);  
+      } else {
+        console.log(color.blue('{copay}'), platform + '-' + arch + ' ' + ' already downloaded');
+        callback.call(this, null);
+      }
+      
+      
+
+      console.log(color.blue('{copay}'), 'getting atom-shell release ' + version);
+
+      github.getReleases({ tag_name: version }, function(err, releases) {
+        var filename = 'atom-shell-' + version + '-' + platform + '-' + arch + '.zip';
+
+        if (err || !releases.length) {
+          return console.log(color.blue('{copay}'), 'Release not found');
+        }
+
+        console.log(color.blue('{copay}'), 'looking for prebuilt binary ' + filename);
+
+        for (var a = 0; a < releases[0].assets.length; a++) {
+          var asset = releases[0].assets[a];
+
+          if (asset.name === filename) {
+
+            console.log(color.blue('{copay}'), 'downloading ' + asset.name);
+
+            var rl = readl.createInterface({
+              input: process.stdin,
+              output: process.stdout
+            });
+
+            rl.write('      bytes received: 0');
+
+            return github.downloadAsset(asset, function(err, inStream) {
+              if (err) {
+                console.log(err);
+                process.exit();
+              }
+
+              var bytes = 0;
+
+              inStream.on('data', function(chunk) {
+                rl.write(null, { ctrl: true, name: 'u' });
+                rl.write('      bytes received: ' + (bytes + chunk.length));
+                bytes += chunk.length;
+              });
+
+              inStream.on('end', function() {
+                rl.close();
+                console.log('');
+                console.log(color.blue('{copay}'), 'downloaded!');
+              });
+
+              var out       = target;
+              var tmp       = os.tmpDir() + '/atom-shell.zip';
+              var outStream = fs.createWriteStream(tmp);
+
+              outStream.on('finish', function() {
+                console.log(color.blue('{copay}'), 'unzipping archive');
+                exec('unzip -o ' + tmp + ' -d ' + out, function(err, stdout, stderr) {
+                  console.log(err || stderr || (color.blue('{copay}') + ' done!'))
+                  callback.call(this, null);
+                });
+              });
+
+              inStream.pipe(outStream);
+
+            });
+          }
+        }
+
+      });
+
+    }
+  }
+}
+
+module.exports = Static;