How to get user request that was sent to dart function and also import secret values from env var

description: A new Flutter project.
environment:
  # sdk: '>=2.18.2 <3.0.0'
  sdk: ">=2.19.6 <3.0.0"

dependencies:
  flutter_svg:
  page_transition:
  flutter_html:
  flutter_widget_from_html:
  flutter_easyloading:
  # webview_flutter:
  # monnify_flutter_sdk_plus:
  # flutter_inappwebview:

  flutter_monnify:
  dio:
  connectivity_plus:
  http:
  get_storage:
  # animated_text_kit:p
  # screenshot:
  # appwrite_auth_kit:
  # dart_appwrite:
  # rflutter_alert:
  # flutter_easyloading:
  cupertino_icons:
  get: #^5.0.0-release-candidate-3
  shared_preferences:
  # awesome_snackbar_content:
  flutter_screenutil:
  url_launcher:
  carousel_slider:
  upgrader:
  # flutter_svg:
  # get_cli:
  # quickalert:
  local_auth:
  pinput:
  # flutter_secure_storage:
  # mailer for otp and notification
  mailer:
  # otp wait
  slide_countdown:
  material_design_icons_flutter:
  ionicons:

  flutter:
    sdk: flutter
  device_preview: ^1.1.0
  device_preview_screenshot: ^1.0.0
  isar: ^3.1.0+1
  isar_flutter_libs: ^3.1.0+1
  appwrite: ^11.0.0

dev_dependencies:
  build_runner: ^2.4.6
  flutter_lints: ^2.0.0
  flutter_test:
    sdk: flutter
  flutter_launcher_icons: ^0.13.1
  flutter_native_splash:
  isar_generator: ^3.1.0+1

flutter clean
flutter pub get