Upgrade the current version according to semver of pubspec.yaml file (build, patch, minor, major)

upgrade.sh

#!/bin/bash

# Function to extract version number from pubspec.yaml file
get_version() {
  local version_line=$(grep -m1 "^version:" pubspec.yaml)
  local version=$(echo $version_line | cut -d' ' -f2)
  echo $version
}

# Function to update the version based on semver
update_version() {
  local current_version=$1
  local version_type=$2

  # Splitting version into major, minor, patch, and build
  local major=$(echo $current_version | cut -d'.' -f1)
  local minor=$(echo $current_version | cut -d'.' -f2)
  local patch=$(echo $current_version | cut -d'.' -f3 | cut -d'+' -f1)
  local build=$(echo $current_version | cut -d'+' -f2)

  # Incrementing version based on the specified type
  case $version_type in
    "build")
      build=$((build + 1))
      ;;
    "patch")
      patch=$((patch + 1))
      ;;
    "minor")
      minor=$((minor + 1))
      patch=0
      ;;
    "major")
      major=$((major + 1))
      minor=0
      patch=0
      ;;
    *)
      echo "Invalid version type. Usage: ./upgrade.sh [build|patch|minor|major]"
      exit 1
  esac

  local new_version="$major.$minor.$patch+$build"
  echo $new_version
}

# Read the version from pubspec.yaml
current_version=$(get_version)
echo "Current version: $current_version"

# Check the argument and update the version accordingly
case $1 in
  "build" | "patch" | "minor" | "major")
    new_version=$(update_version $current_version $1)
    echo "Updating version to: $new_version"

    # Replace the version line in pubspec.yaml
    awk -v new_version="$new_version" '/^version:/ { print "version: " new_version; next }1' pubspec.yaml > pubspec.yaml.tmp
    mv pubspec.yaml.tmp pubspec.yaml

    echo "Version updated successfully!"
    ;;
  *)
    echo "Invalid argument. Usage: ./upgrade.sh [build|patch|minor|major]"
    exit 1
esac