setup fastlane for android

android/fastlane/Appfile

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+json_key_file("") # Path to the json secret file - Follow https://docs.fastlane.tools/actions/supply/#setup to get one
+package_name("com.initproject") # e.g. com.krausefx.app

android/fastlane/Fastfile

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+# This file contains the fastlane.tools configuration
+# You can find the documentation at https://docs.fastlane.tools
+#
+# For a list of all available actions, check out
+#
+#     https://docs.fastlane.tools/actions
+#
+# For a list of all available plugins, check out
+#
+#     https://docs.fastlane.tools/plugins/available-plugins
+#
+
+# Uncomment the line if you want fastlane to automatically update itself
+# update_fastlane
+
+default_platform(:android)
+
+platform :android do
+
+  before_all do
+    FIREBASE_APP_DISTRIBUTION_APP_STAGING = "1:64659984801:android:7a0514333a32b8c5f43be0"
+    FIREBASE_APP_DISTRIBUTION_GROUPS_QA = "android-qa"
+    FIREBASE_SERVICE_ACCOUNT_FILE = ENV['CI_EVALUATION_FIREBASE_SERVICE_ACCOUNT_FILE']
+    PLAYSTORE_SERVICE_ACCOUNT_FILE = ENV['CI_EVALUATION_PLAYSTORE_SERVICE_ACCOUNT_FILE']
+  end
+
+  desc "Submit a new Internal Build to Firebase"
+  desc ">Optionally release notes can be added like so:"
+  desc "```sh"
+  desc "[bundle exec] fastlane deployInternalFirebase release_notes:testing"
+  desc "```"
+  lane :deployInternalFirebase do |options|
+    release_notes = options[:release_notes]
+
+    gradle(task: 'clean', flags: "--no-daemon")
+    gradle(
+        task: 'assemble',
+        build_type: 'release',
+        flags: "--no-daemon",
+        properties: {
+            "applicationId" => "com.initproject.staging"
+        }
+    )
+    internal_apk = lane_context[SharedValues::GRADLE_ALL_APK_OUTPUT_PATHS].find{ |i| i[/app-*release*.apk/] }
+
+    firebase_app_distribution(
+        service_credentials_file: FIREBASE_SERVICE_ACCOUNT_FILE,
+        app: FIREBASE_APP_DISTRIBUTION_APP_STAGING,
+        groups: FIREBASE_APP_DISTRIBUTION_GROUPS_QA,
+        android_artifact_type: 'APK',
+        android_artifact_path: internal_apk,
+        release_notes: "#{release_notes}",
+    )
+  end
+
+  desc "Submit a new Production Build to Play Store"
+  lane :deployProdPlayStore do |options|
+    version_code = options[:version_code] # optional, if not set, it gets the last from PlayStore then adds + 1
+    package_name = "com.initproject.prod"
+
+    if version_code.nil?
+        last_version_codes = google_play_track_version_codes(
+            track: 'internal',
+            json_key: PLAYSTORE_SERVICE_ACCOUNT_FILE,
+            package_name: package_name
+        )
+        last_version_code = last_version_codes[0]
+        version_code = last_version_code + 1
+    end
+
+    gradle(task: 'clean', flags: "--no-daemon")
+    gradle(
+        task: 'bundle',
+        build_type: 'release',
+        flags: "--no-daemon",
+        properties: {
+            "versionCode" => version_code
+        }
+    )
+    production_aab = lane_context[SharedValues::GRADLE_ALL_AAB_OUTPUT_PATHS].find{ |i| i[/app-*release*.aab/] }
+
+    upload_to_play_store(
+        track: 'internal',
+        release_status: 'draft', # can remove once app is released to the public
+        aab: production_aab,
+        json_key: PLAYSTORE_SERVICE_ACCOUNT_FILE,
+        skip_upload_apk: true,
+        package_name: package_name,
+    )
+   end
+end

android/fastlane/Pluginfile

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+# Autogenerated by fastlane
+#
+# Ensure this file is checked in to source control!
+
+gem 'fastlane-plugin-firebase_app_distribution'

android/fastlane/README.md

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+fastlane documentation
+----
+
+# Installation
+
+Make sure you have the latest version of the Xcode command line tools installed:
+
+```sh
+xcode-select --install
+```
+
+For _fastlane_ installation instructions, see [Installing _fastlane_](https://docs.fastlane.tools/#installing-fastlane)
+
+# Available Actions
+
+## Android
+
+### android deployInternalFirebase
+
+```sh
+[bundle exec] fastlane android deployInternalFirebase
+```
+
+Submit a new Internal Build to Firebase
+
+>Optionally release notes can be added like so:
+
+```sh
+
+[bundle exec] fastlane deployInternalFirebase release_notes:testing
+
+```
+
+### android deployProdPlayStore
+
+```sh
+[bundle exec] fastlane android deployProdPlayStore
+```
+
+Submit a new Production Build to Play Store
+
+----
+
+This README.md is auto-generated and will be re-generated every time [_fastlane_](https://fastlane.tools) is run.
+
+More information about _fastlane_ can be found on [fastlane.tools](https://fastlane.tools).
+
+The documentation of _fastlane_ can be found on [docs.fastlane.tools](https://docs.fastlane.tools).