started adding copay shell to copay

shell/lib/message-handler.js

@@ -0,0 +1,81 @@
+/*
+** copay-shell - message handler
+*/
+
+var ipc     = require('ipc');
+var dialog  = require('dialog');
+var config  = require('../config');
+var windows = (process.platform === 'win32');
+var HOME    = process.env[windows ? 'USERPROFILE' : 'HOME'];
+var fs      = require('fs');
+var shell   = require('shell');
+
+module.exports = function(renderer) {
+
+  // handle alerts sent from renderer (browser window)
+  ipc.on('alert', function(e, type, message) {
+    dialog.showMessageBox(renderer, {
+      type: type || 'info',
+      buttons: ['Okay'],
+      title: 'Copay',
+      message: message
+    });
+  });
+
+  // handle saving a wallet backup
+  ipc.on('backup:download', function(e, data) {
+    var backup   = new Buffer(data.wallet);
+    var filename = data.name + '-' + (+(new Date)) + '.json.aes';
+    // open save dialog
+    dialog.showSaveDialog(renderer, {
+      title: 'Backup Wallet',
+      defaultPath: HOME + '/' + filename
+    }, function(path) {
+      if (!path) return;
+      fs.writeFile(path, backup, function(err) {
+        dialog.showMessageBox(renderer, {
+          type: err ? 'warning' : 'info',
+          buttons: ['Okay'],
+          title: 'Copay',
+          message: err ? err.message : 'Wallet backup saved!'
+        });
+      });
+    });
+  });
+
+  // handle emailing a wallet backup
+  ipc.on('backup:email', function(e, href) {
+    // open email client
+    shell.openExternal(href)
+  });
+
+  // handle importing a wallet backup
+  ipc.on('backup:import', function(e, data) {
+
+    // open file dialog
+    dialog.showOpenDialog(renderer, {
+      title: 'Import Wallet Backup',
+      defaultPath: HOME,
+      properties: ['openFile']
+    }, function(path) {
+      if (!path) return;
+      fs.readFile(path[0], function(err, contents) {
+        if (err) {
+          return dialog.showMessageBox(renderer, {
+            type: 'warning',
+            buttons: ['Okay'],
+            title: 'Copay',
+            message: err.message
+          });
+        }
+        renderer.send('backup:import:data', contents.toString());
+      });
+    });
+  });
+
+  // if we get an error, let's pop open the console for the user
+  ipc.on('error', function() {
+    if (config.debug) renderer.toggleDevTools();
+  });
+
+};