add a fork command

README.md

@@ -52,6 +52,9 @@ View your online backup using the following command:
 Check the latest backup is applied:
 * `sync-settings:check-backup`
 
+You can also fork existing settings from a different GitHub user using the following command:
+* `sync-settings:fork`
+* In the following input field enter the Gist ID to fork
 
 ## Running the tests
 

lib/fork-gistid-input-view.coffee

@@ -0,0 +1,40 @@
+{CompositeDisposable} = require 'atom'
+{$, TextEditorView, View} = require 'atom-space-pen-views'
+
+oldView = null
+
+module.exports =
+  class ForkGistIdInputView extends View
+    @content: ->
+      @div class: 'command-palette', =>
+        @subview 'selectEditor', new TextEditorView(mini: true, placeholderText: 'Gist ID to fork')
+
+    initialize: ->
+      oldView?.destroy()
+      oldView = this
+
+      @disposables = new CompositeDisposable
+      @disposables.add atom.commands.add 'atom-text-editor', 'core:confirm', => @confirm()
+      @disposables.add atom.commands.add 'atom-text-editor', 'core:cancel', => @destroy()
+      @attach()
+
+    destroy: ->
+      @disposables.dispose()
+      @detach()
+
+    attach: ->
+      @panel ?= atom.workspace.addModalPanel(item: this)
+      @panel.show()
+      @selectEditor.focus()
+
+    detach: ->
+      @panel.destroy()
+      super
+
+    confirm: ->
+      gistId = @selectEditor.getText()
+      @callbackInstance.forkGistId(gistId)
+      @destroy()
+
+    setCallbackInstance: (callbackInstance) ->
+      @callbackInstance = callbackInstance

lib/sync-settings.coffee

@@ -3,6 +3,7 @@
 fs = require 'fs'
 _ = require 'underscore-plus'
 [GitHubApi, PackageManager, Tracker] = []
+ForkGistIdInputView = null
 
 # constants
 DESCRIPTION = 'Atom configuration storage operated by http://atom.io/packages/sync-settings'
@@ -31,6 +32,8 @@ SyncSettings =
       atom.commands.add 'atom-workspace', "sync-settings:check-backup", =>
         @checkForUpdate()
         @tracker.track 'Check backup'
+      atom.commands.add 'atom-workspace', "sync-settings:fork", =>
+        @inputForkGistId()
 
       mandatorySettingsApplied = @checkMandatorySettings()
       @checkForUpdate() if atom.config.get('sync-settings.checkForUpdatedBackup') and mandatorySettingsApplied
@@ -40,6 +43,7 @@ SyncSettings =
       @tracker.trackActivate()
 
   deactivate: ->
+    @inputView?.destroy()
     @tracker.trackDeactivate()
 
   serialize: ->
@@ -274,4 +278,31 @@ SyncSettings =
       console.error "Error reading file #{filePath}. Probably doesn't exist.", e
       null
 
+  inputForkGistId: ->
+    ForkGistIdInputView ?= require './fork-gistid-input-view'
+    @inputView = new ForkGistIdInputView()
+    @inputView.setCallbackInstance(this)
+
+  forkGistId: (forkId) ->
+    @tracker.track 'Fork'
+    @createClient().gists.fork
+      id: forkId
+    , (err, res) =>
+      if err
+        try
+          message = JSON.parse(err.message).message
+          message = "Gist ID Not Found" if message is "Not Found"
+        catch SyntaxError
+          message = err.message
+        atom.notifications.addError "sync-settings: Error forking settings. ("+message+")"
+        return cb?()
+
+      if res.id
+        atom.config.set "sync-settings.gistId", res.id
+        atom.notifications.addSuccess "sync-settings: Forked successfully to the new Gist ID " + res.id + " which has been saved to your config."
+      else
+        atom.notifications.addError "sync-settings: Error forking settings"
+
+      cb?()
+
 module.exports = SyncSettings

package.json

@@ -19,6 +19,7 @@
   },
   "dependencies": {
     "analytics-node": "^1.2.2",
+    "atom-space-pen-views": "^2.2.0",
     "emissary": "1.x",
     "github4": "^0.4.0",
     "loophole": "^1.0.0",