From 938adb539fdef4cbd6b63b431665fe391c540616 Mon Sep 17 00:00:00 2001
From: Michael Ruhl <michael.ruhl@novatec-gmbh.de>
Date: Mon, 5 Jul 2021 20:38:30 +0200
Subject: [PATCH] Reuse existent avd for faster boot up if the image is the
 same

Can be disabled with the new options: cold_boot
---
 README.md                                     |  5 +-
 .../actions/android_emulator_action.rb        | 46 ++++++++++++-------
 2 files changed, 32 insertions(+), 19 deletions(-)

diff --git a/README.md b/README.md
index 785455a..5a019dc 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ With additional features:
 
 ## Example
 
-**Available Options:** sdk_dir, package, name, device, port, location, demo_mode
+**Available Options:** sdk_dir, package, name, device, port, location, demo_mode, cold_boot
 
 ```ruby
 android_emulator(
@@ -29,7 +29,8 @@ android_emulator(
 	package: "system-images;android-24;google_apis;x86_64",
 	demo_mode: true,
 	sdk_dir: "PATH_TO_SDK",
-	device: "Nexus 5"
+	device: "Nexus 5",
+	cold_boot: false
 )
 ```
 
diff --git a/lib/fastlane/plugin/android_emulator/actions/android_emulator_action.rb b/lib/fastlane/plugin/android_emulator/actions/android_emulator_action.rb
index 2b0848c..37e92d1 100644
--- a/lib/fastlane/plugin/android_emulator/actions/android_emulator_action.rb
+++ b/lib/fastlane/plugin/android_emulator/actions/android_emulator_action.rb
@@ -4,6 +4,11 @@
 module Fastlane
   module Actions
     class AndroidEmulatorAction < Action
+      def self.avd_active(params)
+        image = params[:package].gsub(";", "/")
+        return File.readlines("#{Dir.home}/.android/avd/#{params[:name]}.avd/config.ini").grep(/#{image}/).size > 0
+      end
+
       def self.run(params)
         sdk_dir = params[:sdk_dir]
         port = params[:port]
@@ -11,22 +16,24 @@ def self.run(params)
 
         UI.message("Stopping emulator")
         system("#{adb} emu kill > /dev/null 2>&1 &")
-        sleep(2)
-
-        UI.message("Creating new emulator")
-        FastlaneCore::CommandExecutor.execute(
-          command: "#{sdk_dir}/tools/bin/avdmanager create avd -n '#{params[:name]}' -f -k '#{params[:package]}' -d '#{params[:device]}'",
-          print_all: true,
-          print_command: false
-        )
-
-        UI.message("Override configuration")
-        open("#{Dir.home}/.android/avd/#{params[:name]}.avd/config.ini", 'a') { |f|
-          f << "hw.gpu.mode=auto\n"
-          f << "hw.gpu.enabled=yes\n"
-          f << "skin.dynamic=yes\n"
-          f << "skin.name=1080x1920\n"
-        }
+        sleep(3)
+
+        if !avd_active(params) || params[:cold_boot]
+          UI.message("Creating new emulator")
+          FastlaneCore::CommandExecutor.execute(
+            command: "#{sdk_dir}/tools/bin/avdmanager create avd -n '#{params[:name]}' -f -k '#{params[:package]}' -d '#{params[:device]}'",
+            print_all: true,
+            print_command: false
+          )
+
+          UI.message("Override configuration")
+          open("#{Dir.home}/.android/avd/#{params[:name]}.avd/config.ini", 'a') { |f|
+            f << "hw.gpu.mode=auto\n"
+            f << "hw.gpu.enabled=yes\n"
+            f << "skin.dynamic=yes\n"
+            f << "skin.name=1080x1920\n"
+          }
+        end
 
         # Verify HAXM installed on mac
         if FastlaneCore::Helper.mac?
@@ -113,7 +120,12 @@ def self.available_options
                                        env_name: "AVD_DEMO_MODE",
                                        description: "Set the emulator in demo mode",
                                        is_string: false,
-                                       default_value: true)
+                                       default_value: true),
+          FastlaneCore::ConfigItem.new(key: :cold_boot,
+                                       env_name: "AVD_COLD_BOOT",
+                                       description: "Create a new AVD every run",
+                                       is_string: false,
+                                       default_value: false)
         ]
       end