#!/bin/bash

# Function to check and pull the latest version of a package from GitHub
check_and_update_package() {
  local repo_owner="$1"
  local repo_name="$2"
  local local_path="$3"
  
  echo "Checking for updates for $repo_name..."
  
  # Get the latest release info from GitHub API
  latest_release=$(curl -s "https://api.github.com/repos/$repo_owner/$repo_name/releases/latest")
  latest_version=$(echo "$latest_release" | grep -oP '(?<="tag_name": ")([^"]+)')
  
  if [ -z "$latest_version" ]; then
    echo "Failed to fetch latest version for $repo_name."
    return 1
  fi
  
  # Check if the package is already installed at the local path
  if [ -d "$local_path" ]; then
    # Check if the installed version matches the latest
    current_version=$(cd "$local_path" && git describe --tags 2>/dev/null || echo 'unknown')
    if [ "$current_version" == "$latest_version" ]; then
      echo "$repo_name is already up to date (version: $current_version)."
      return 0
    else
      echo "Updating $repo_name from version $current_version to $latest_version..."
      cd "$local_path" && git pull origin "$latest_version"
    fi
  else
    echo "Installing $repo_name version $latest_version..."
    git clone "https://github.com/$repo_owner/$repo_name.git" "$local_path"
    cd "$local_path" && git checkout "$latest_version"
  fi
  
  if [ $? -eq 0 ]; then
    echo "$repo_name has been updated to version $latest_version."
  else
    echo "Failed to update $repo_name."
    return 1
  fi
}

# Example usage:
# check_and_update_package 'owner' 'repository' '/path/to/install'