localenv

#!/bin/bash
set -e

# Local Containerized Environment (localenv)

# Function to display usage information
usage() {
  cat <<EOF
Usage: $0 <language> <script_path>
Options:
  --help            Display this help message and exit

Arguments:
  <language>        The programming language environment to use (e.g., python)
  <script_path>     The path to the script to be executed within the Docker container
EOF
  exit 0
}

# Function to display an error message and usage information
error_usage() {
  echo "Error: $1"
  usage
}

# Function to check if Docker is installed
check_docker_installed() {
  if ! command -v docker &>/dev/null; then
    echo "Error: Docker is not installed. Please install Docker to use this script."
    exit 1
  fi
}

# Function to check if a file exists
check_file_exists() {
  local file_to_check=$1
  if [ ! -f "$file_to_check" ]; then
    echo "Error: YAML file '$file_to_check' not found."
    exit 1
  fi
}

# Function to validate input arguments
check_input() {
  local language=$1
  local script_path=$2
  if [[ -z "$language" || -z "$script_path" ]]; then
    error_usage "Both language and script_path are required."
  fi
}

# Variables
CONFIG_FILE_PATH="./config.yaml"
language=$1
script_path=$2

# Check for --help argument
if [[ "$language" == "--help" || "$script_path" == "--help" ]]; then
  usage
fi

echo "Pre-flight checking"
# Validate input arguments
check_input "$language" "$script_path"

# Ensure Docker is installed
check_docker_installed

# Ensure the config file exists
check_file_exists "$CONFIG_FILE_PATH"

# Load and parse the YAML file using yq
image=$(yq e ".$language.image" "$CONFIG_FILE_PATH")
container_name=$(yq e ".$language.default_container_name" "$CONFIG_FILE_PATH")
base_cmd=$(yq e ".$language.base_command" "$CONFIG_FILE_PATH")

echo "Pre-flight checking - OK"
# Command to execute
echo "Execute $language script in Docker..."

docker run --rm \
  --name "$container_name" \
  -v "$(pwd)":/tmp/ \
  -w /tmp/ \
  "$image" $base_cmd $script_path

# Check the exit status of the Docker run command
if [ $? -eq 0 ]; then
  echo "Script executed successfully."
else
  echo "Script execution failed."
  exit 1
fi