#!/bin/bash

set -e  # Exit on error

echo "Starting deployment..."

# Variables
ENV=${1:-production}
VERSION=${2:-latest}

# Check prerequisites
if [ ! -f "Dockerfile" ]; then
  echo "Dockerfile not found"
  exit 1
fi

echo "Deploying version $VERSION to $ENV"

# For loop
for file in *.txt; do
  echo "Processing $file"
done

# While loop
while [ $count -lt 10 ]; do
  echo $count
  ((count++))
done

# If conditions
if [ -f "file.txt" ]; then
  echo "File exists"
elif [ -d "directory" ]; then
  echo "Directory exists"
else
  echo "Not found"
fi

# Case statement
case $ENV in
  production)
    echo "Deploying to production"
    ;;
  staging)
    echo "Deploying to staging"
    ;;
  *)
    echo "Unknown environment"
    ;;
esac

deploy() {
  local env=$1
  local version=$2

  echo "Deploying $version to $env"
  # Deployment logic
  return 0
}

# Call function
deploy "production" "1.0.0"

set -e  # Exit on error
set -u  # Error on undefined variables
set -o pipefail  # Pipe fails on any error

trap 'echo "Error on line $LINENO"' ERR

command || { echo "Command failed"; exit 1; }