fix(mailto): Linux support for mailto links

Summary: Mailto link handling for ubuntu and other linux platforms

Test Plan: A few new tests

Reviewers: dillon, evan

Reviewed By: dillon, evan

Differential Revision: https://phab.nylas.com/D2023

build/resources/linux/nylas.desktop.in

@@ -7,4 +7,4 @@ Icon=<%= iconName %>
 Type=Application
 StartupNotify=true
 Categories=GNOME;GTK;Utility;EmailClient;Development;
-MimeType=text/plain;
+MimeType=text/plain;x-scheme-handler/mailto;x-scheme-handler/nylas;

spec-nylas/launch-services-spec.coffee

@@ -120,11 +120,10 @@ describe "LaunchServices", ->
     ]
 
 
-  describe "when the platform is darwin", ->
+  describe "LaunchServicesMac", ->
     beforeEach ->
       execHitory = []
-      @services = new LaunchServices()
-      @services.getPlatform = -> 'darwin'
+      @services = new LaunchServices.LaunchServicesMac()
 
     describe "available", ->
       it "should return true", ->
@@ -215,11 +214,18 @@ describe "LaunchServices", ->
         @services.registerForURLScheme('mailto')
         expect(@services.writeDefaults).toHaveBeenCalled()
 
-  describe "on other platforms", ->
+  describe "LaunchServicesLinux", ->
     describe "available", ->
       beforeEach ->
-        @services = new LaunchServices()
-        @services.getPlatform = -> 'win32'
+        @services = new LaunchServices.LaunchServicesLinux()
+
+      it "should return true", ->
+        expect(@services.available()).toEqual(true)
+
+  describe "LaunchServicesUnavailable", ->
+    describe "available", ->
+      beforeEach ->
+        @services = new LaunchServices.LaunchServicesUnavailable()
 
       it "should return false", ->
         expect(@services.available()).toEqual(false)

src/launch-services.coffee

@@ -3,17 +3,46 @@ fs = require('fs')
 
 bundleIdentifier = 'com.nylas.nylas-mail'
 
-module.exports =
-class LaunchServices
+class LaunchServicesUnavailable
+  available: ->
+    false
 
+  isRegisteredForURLScheme: (scheme, callback) ->
+    throw new Error "isRegisteredForURLScheme is not available"
+
+  resetURLScheme: (scheme, callback) ->
+    throw new Error "resetURLScheme is not available"
+
+  registerForURLScheme: (scheme, callback) ->
+    throw new Error "registerForURLScheme is not available"
+
+class LaunchServicesLinux
+
+  available: ->
+    true
+
+  isRegisteredForURLScheme: (scheme, callback) ->
+    throw new Error "isRegisteredForURLScheme is async, provide a callback" unless callback
+    exec "xdg-mime query default x-scheme-handler/#{scheme}", (err, stdout, stderr) ->
+      return callback(err) if callback and err
+      callback(null, stdout is 'nylas.desktop')
+
+  resetURLScheme: (scheme, callback) ->
+    exec "xdg-mime default thunderbird.desktop x-scheme-handler/#{scheme}", (err, stdout, stderr) ->
+      return callback(err) if callback and err
+      callback(null, null)
+
+  registerForURLScheme: (scheme, callback) ->
+    exec "xdg-mime default nylas.desktop x-scheme-handler/#{scheme}", (err, stdout, stderr) ->
+      return callback(err) if callback and err
+      callback(null, null)
+
+class LaunchServicesMac
   constructor: ->
     @secure = false
 
-  getPlatform: ->
-    process.platform
-
   available: ->
-    @getPlatform() is 'darwin'
+    true
 
   getLaunchServicesPlistPath: (callback) ->
     secure = "#{process.env.HOME}/Library/Preferences/com.apple.LaunchServices/com.apple.launchservices.secure.plist"
@@ -87,3 +116,14 @@ class LaunchServices
         LSHandlerRoleAll: bundleIdentifier
 
       @writeDefaults(defaults, callback)
+
+
+module.exports = LaunchServicesUnavailable
+if process.platform is 'darwin'
+  module.exports = LaunchServicesMac
+else if process.platform is 'linux'
+  module.exports = LaunchServicesLinux
+
+module.exports.LaunchServicesMac = LaunchServicesMac
+module.exports.LaunchServicesLinux = LaunchServicesLinux
+module.exports.LaunchServicesUnavailable = LaunchServicesUnavailable