live.sh

#!/bin/bash

set -e

# Color codes for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

print_usage() {
  SCRIPT_NAME=$(basename "$0")
  echo "Description"
  echo ""
  echo "Usage: $SCRIPT_NAME <path1> [path2 ...] -- <command>"
  echo "Example: $SCRIPT_NAME src/ lib/ -- npm test"
  echo "Parameters:"
  echo "  -h, --help  Show this help message"
  exit "$1"
}

# Check if we have at least 3 arguments (path -- command)
if [ $# -lt 3 ]; then
  print_usage 1
fi

COMMAND=""
PARSING_PATHS=true
PATHS=()
for arg in "$@"; do
  if [ "$arg" = "--" ]; then
    PARSING_PATHS=false
    continue
  fi

  if [ "$PARSING_PATHS" = true ]; then
    PATHS+=("$arg")
  else
    if [ -z "$COMMAND" ]; then
      COMMAND="$arg"
    else
      COMMAND="$COMMAND $arg"
    fi
  fi
done

# Validate that we have paths and a command
if [ ${#PATHS[@]} -eq 0 ]; then
  echo -e "${RED}Error: No paths specified${NC}"
  print_usage 2
fi

if [ -z "$COMMAND" ]; then
  echo -e "${RED}Error: No command specified${NC}"
  print_usage 3
fi

# Verify paths exist
for path in "${PATHS[@]}"; do
  if [ ! -e "$path" ]; then
    echo -e "${RED}Error: Path does not exist: $path${NC}"
    exit 1
  fi
done

trap printout SIGINT
printout() {
  echo ""
  1>&2 echo "Watch path terminated forcefully"
  exit
}

eval "${COMMAND}"

while true
do
  printf "\n\n\n-------------------\n\n\n"
  watch -d -t -g ls -lRT ${PATHS[@]} > /dev/null && RES=$? && eval "${COMMAND}"
done