autoduti: setup your default text editor on macOS using duti

autoduti

#!/usr/bin/env bash

die() { echo "Error: $*" >&2; exit 1; }

main() {
  set -euo pipefail

  command -v duti >/dev/null 2>&1 || die "duti not installed"

  local app_name bundle_id
  app_name="${*:-}"
  [ -n "$app_name" ] || die "Usage: $0 <app name>"

  if ! bundle_id="$(osascript \
    -e 'on run argv' \
    -e 'id of application (item 1 of argv)' \
    -e 'end run' \
    -- "$app_name" | tr -d '\r\n')"; then
    # Fallback: allow passing a bundle id directly (must contain at least one dot).
    if [[ "$app_name" =~ ^[A-Za-z0-9-]+(\.[A-Za-z0-9-]+)+$ ]]; then
      bundle_id="$app_name"
    else
      die "could not resolve bundle id for: $app_name"
    fi
  fi

  [ -n "$bundle_id" ] || die "could not resolve bundle id for: $app_name"
  [[ "$bundle_id" =~ ^[A-Za-z0-9-]+(\.[A-Za-z0-9-]+)+$ ]] || die "unexpected bundle id: $bundle_id"

  echo "Setting $app_name ($bundle_id) as default application for various file types..."

  # JSON and JSONC files
  duti -s "$bundle_id" .jsonc all
  duti -s "$bundle_id" .json all

  # Markdown files
  duti -s "$bundle_id" .md all

  # Source code files
  duti -s "$bundle_id" public.source-code all

  # Text files (extensions + UTI)
  duti -s "$bundle_id" public.plain-text all
  duti -s "$bundle_id" .txt all

  # TypeScript/JavaScript variants
  duti -s "$bundle_id" .tsx all
  duti -s "$bundle_id" .ts all
  duti -s "$bundle_id" .jsx all
  duti -s "$bundle_id" .js all

  echo "All associations set successfully!"
}

if [[ "${BASH_SOURCE[0]}" == "$0" ]]; then
  main "$@"
fi