flutter-version.sh

#!/bin/bash

# Check if .flutter-version file exists
if [[ ! -f ".flutter-version" ]]; then
  echo ".flutter-version file not found."
  exit 1
fi

# Read the version tag from the file
FLUTTER_TAG=$(<.flutter-version)

# Check if the .flutter-version file is empty
if [[ -z "$FLUTTER_TAG" ]]; then
  echo ".flutter-version file is empty. Please specify a Flutter version tag."
  exit 1
fi

# Find the Flutter installation path
FLUTTER_PATH=$(which flutter)

if [[ -z "$FLUTTER_PATH" ]]; then
  echo "Flutter is not installed or not found in your PATH."
  exit 1
fi

# Get the directory of the Flutter installation
FLUTTER_DIR=$(dirname "$(dirname "$FLUTTER_PATH")")

# Change to the Flutter directory
cd "$FLUTTER_DIR" || exit

# Get the current checked-out Git tag
CURRENT_TAG=$(git describe --tags)

if [[ "$CURRENT_TAG" == "$FLUTTER_TAG" ]]; then
  echo "Already on Flutter version $FLUTTER_TAG. No changes needed."
  exit 0
fi

# Checkout the specified tag
git checkout "$FLUTTER_TAG"

if [[ $? -ne 0 ]]; then
  echo "Failed to checkout the tag $FLUTTER_TAG."
  exit 1
else
  echo "Successfully checked out Flutter version $FLUTTER_TAG."
fi

# Download and install any necessary dependencies
echo "Downloading necessary dependencies..."
flutter precache
flutter doctor

if [[ $? -ne 0 ]]; then
  echo "Failed to download dependencies. Please check your network connection and try again."
  exit 1
else
  echo "Dependencies downloaded successfully."
fi