gistfile1.txt

#!/bin/bash

# Function to check if AWS CLI tools are available
function check_aws_cli() {
  if ! which aws &> /dev/null; then
    echo "Error: AWS CLI not found. Please install AWS CLI and configure credentials."
    exit 1
  fi
}

# Function to create a CloudFormation stack
function create_stack() {
  local stack_name="$1"
  local template_file="$2"
  local parameters_file="$3"

  check_aws_cli

  aws cloudformation create-stack \
    --stack-name "$stack_name" \
    --template-body "file://$template_file" \
    (test -f "$parameters_file" && echo "--parameters file://$parameters_file")

  echo "Stack '$stack_name' creation initiated."
}

# Function to update a CloudFormation stack
function update_stack() {
  local stack_name="$1"
  local template_file="$2"
  local parameters_file="$3"

  check_aws_cli

  aws cloudformation update-stack \
    --stack-name "$stack_name" \
    (test -f "$template_file" && echo "--template-body file://$template_file") \
    (test -f "$parameters_file" && echo "--parameters file://$parameters_file")

  echo "Stack '$stack_name' update initiated."
}

# Function to delete a CloudFormation stack
function delete_stack() {
  local stack_name="$1"

  check_aws_cli

  aws cloudformation delete-stack --stack-name "$stack_name"

  echo "Stack '$stack_name' deletion initiated."
}

# Usage message
if [ $# -lt 2 ]; then
  echo "Usage: $0 {create|update|delete} <stack_name> [template_file] [parameters_file]"
  echo "  create: Create a new stack."
  echo "  update: Update an existing stack."
  echo "  delete: Delete an existing stack."
  echo "  stack_name: The name of the CloudFormation stack."
  echo "  template_file (optional): Path to the CloudFormation template file (YAML format)."
  echo "  parameters_file (optional): Path to a file containing stack parameters (JSON format)."
  exit 1
fi

# Call the appropriate function based on the first argument
case $1 in
  create)
    shift
    create_stack "$@"
    ;;
  update)
    shift
    update_stack "$@"
    ;;
  delete)
    shift
    delete_stack "$@"
    ;;
  *)
    echo "Invalid command: '$1'"
    exit 1
    ;;
esac