#!/bin/env sh

usage() {
  echo "Usage: patch-manjaro-sway-mirror-for-arm.sh [OPTIONS]"
  echo "Options:"
  echo "  -t, --target-file   Path to the target file (default: /usr/bin/manjaro-sway-mirrors)"
  echo "  -s, --search-pattern   Search pattern to replace (default: $(pacman-mirrors -G)"
  echo "  -r, --replace-pattern   Replace pattern (default: \$(pacman-mirrors -G \| sed 's/^arm-//'))"
  echo "  --dry-run   Run the sed command without modifying the file"
  echo "  --help   Display this help message"
  exit 0
}

# Default values
dry_run=false

# Parse command-line options
while [ $# -gt 0 ]; do
  case "$1" in
  -t | --target-file)
    shift
    target_file="$1"
    ;;
  -s | --search-pattern)
    shift
    search_pattern="$1"
    ;;
  -r | --replace-pattern)
    shift
    replace_pattern="$1"
    ;;
  --dry-run)
    dry_run=true
    ;;
  --help)
    usage
    ;;
  *)
    # Check if positional arguments are provided
    if [ -z "$target_file" ]; then
      target_file="$1"
    elif [ -z "$search_pattern" ]; then
      search_pattern="$1"
    elif [ -z "$replace_pattern" ]; then
      replace_pattern="$1"
    else
      echo "Invalid argument: $1"
      usage
    fi
    ;;
  esac
  shift
done

if [ -z "$target_file" ]; then
  target_file="${MSMAP_TARGET_ROOT}/usr/bin/manjaro-sway-mirrors"
fi

if [ -z "$search_pattern" ]; then
  # shellcheck disable=SC2016
  search_pattern='\$(pacman-mirrors -G)'
fi

if [ -z "$replace_pattern" ]; then
  # shellcheck disable=SC2016
  replace_pattern='\$(pacman-mirrors -G \| sed \"s/^arm-//\")'
fi

sed_command="sed -i \"s|${search_pattern}|${replace_pattern}|g\" \"${target_file}\""
# Perform the sed command
if $dry_run; then
  echo "$sed_command"
  sed "s|${search_pattern}|${replace_pattern}|g" "${target_file}"
else
  eval "${sed_command}"
fi