create_script2

#!/bin/bash

# Create script
# This script creates new bash scripts, sets their permission and more
# Author: Tega

# The shift command removes the first argument
# All positional parameters shift
# $2 -> $1, $3 -> $2, $4 -> $3 etc.
# $# i.e total number of arguments is reduced by one after every "shift" call
# You can give a number to shift multiple e.g "shift 3" removes the first three arguments

# Test if there is an argument
if [[ ! $1 ]]; then
  echo "Missing argument"
  exit 1
fi

# if the total number of argument provided is exactly one, then we can open the editor
# after its creation else for multiple arguments, we don't open the editor
declare open_editor=""
if [[ $# -eq 1 ]]; then
  open_editor="true"
fi

declare -r scriptsdir="${HOME}/Documents/bash_scripting_prac"

# Check that the directory to save to exists
if [[ ! -d $scriptsdir ]]; then
  # Try to create the directory if it does not exist
  if mkdir "$scriptsdir"; then
    echo "Created ${scriptsdir}" >&2
  else
    echo "Could not create ${scriptsdir}" >&2
    exit 1
  fi
fi

# The logic below handles the creation of multiple scripts if more than one argument is provided
while [[ $1 ]]; do
  scriptname="$1"
  filename="${scriptsdir}/${scriptname}"

  # Check if the new file already exists in the directory
  if [[ -e $filename ]]; then
    echo "File ${filename} already exists" >&2
    shift
    continue
  fi

  # Check if the name of the script you provide clashes with the name of an existing command
  # redirecting to /dev/null as shown below basically discards the output message so it does not clutter the terminal
  # In the case of errors, using 2>&1 redirects from stderr to stdout
  if type "$scriptname" > /dev/null 2>&1; then
    echo "There is already a command with name ${scriptname}" >&2
    shift
    continue
  fi

  # Create a script with a single line
  echo "#!/bin/bash" > "$filename"
  # Add executable permission
  chmod u+x "$filename"
  shift
done


if [[ $open_editor ]]; then
  echo opening
  if [[ $EDITOR ]]; then
    $EDITOR "$filename"
  fi
fi