Auto detect selected simulator in xcode

lib/run_loop/detect_aut/xcode.rb

@@ -1,8 +1,10 @@
+
 module RunLoop
   # @!visibility private
   module DetectAUT
     # @!visibility private
     module Xcode
+      require "etc"
 
       # @!visibility private
       def xcode_project?
@@ -38,6 +40,19 @@ def find_xcodeproj
         xcode_projects
       end
 
+      # @!visibility private
+      def self.find_user_state_file
+        username = RunLoop::Environment.username
+        xcworkspace = RunLoop::Environment.xcodeproj
+        unless xcworkspace.nil?
+          xcworkspace = xcworkspace.gsub("xcodeproj", "xcworkspace")
+          file = Dir.glob("#{xcworkspace}/xcuserdata/#{username}.xcuserdatad/UserInterfaceState.xcuserstate")
+          if !file.nil? && file.is_a?(Array)
+            return file[0]
+          end
+        end
+      end
+
       # @!visibility private
       def ignore_xcodeproj?(path)
         path[/CordovaLib/, 0] ||
@@ -151,6 +166,40 @@ def xcode_preferences_plist
       def pbuddy
         @pbuddy ||= RunLoop::PlistBuddy.new
       end
+
+      # @!visibility private
+      # @param [String] file the plist to read
+      # @return [String] the UDID of device
+      def self.plist_find_device(file)
+        #TODO unfortunately i can use ony this solution
+        file_content = `/usr/libexec/PlistBuddy -c Print "#{file}"`
+            .encode('UTF-8', 'binary', invalid: :replace, undef: :replace, replace: '')
+        if !file_content.nil? && !file_content.empty?
+          lines = file_content.split("\n")
+          lines.detect do |line|
+            line[/dvtdevice.*:/, 0]
+          end
+        end
+      end
+
+      # @!visibility private
+      def self.detect_selected_device
+        file_name = find_user_state_file
+        selected_device = plist_find_device(file_name)
+        if selected_device != '' && !selected_device.nil?
+          udid = selected_device.split(':')[1]
+          selected_device = RunLoop::Device.device_with_identifier(udid)
+          #TODO now only returning detected device if simulator detected
+          if selected_device.simulator?
+            RunLoop.log_info2("Detected simulator selected in Xcode is: #{selected_device}")
+            RunLoop.log_info2("If this is not desired simulator, set the DEVICE_TARGET variable")
+            selected_device
+
+          else
+            nil
+          end
+        end
+      end
     end
   end
 end

lib/run_loop/device.rb

@@ -144,7 +144,13 @@ def self.device_with_identifier(udid_or_name, options={})
     # @raise [ArgumentError] If DEVICE_TARGET or options specify an identifier
     #  that does not match an iOS Simulator or physical device.
     def self.detect_device(options, xcode, simctl, instruments)
-      device = self.device_from_opts_or_env(options)
+      detected_device = RunLoop::DetectAUT::Xcode.detect_selected_device
+      if detected_device.is_a?(RunLoop::Device)
+        device = detected_device
+      else
+        device = self.device_from_opts_or_env(options)
+      end
+
 
       # Passed an instance of RunLoop::Device
       return device if device && device.is_a?(RunLoop::Device)

lib/run_loop/environment.rb

@@ -290,6 +290,11 @@ def self.ci?
       ].any?
     end
 
+    # Returns current username
+    def self.username
+      Etc.getpwuid.name
+    end
+
     # !@visibility private
     def self.with_debugging(debug, &block)
       if debug