install.sh

#!/bin/sh

# -e: exit on error
# -u: exit on unset variables
set -eu

# POSIX way to get script's dir: https://stackoverflow.com/a/29834779/12156188
script_dir="$(cd -P -- "$(dirname -- "$(command -v -- "$0")")" && pwd -P)"

if ! chezmoi="$(command -v chezmoi)"; then
  bin_dir="${script_dir}/root/bin"
  chezmoi="${bin_dir}/chezmoi"
  echo "Installing chezmoi to '${chezmoi}'" >&2
  if command -v curl >/dev/null; then
    chezmoi_install_script="$(curl -fsSL https://chezmoi.io/get)"
  elif command -v wget >/dev/null; then
    chezmoi_install_script="$(wget -qO- https://chezmoi.io/get)"
  else
    echo "To install chezmoi, you must have curl or wget installed." >&2
    exit 1
  fi
  sh -c "${chezmoi_install_script}" -- -b "${bin_dir}"
  unset chezmoi_install_script bin_dir
fi

if [ -z "${ACT:+false}${CODESPACES:+false}${DEBIAN_FRONTEND:+false}" ]; then
  echo "Running interactive"
  "${chezmoi}" init "--source=${script_dir}"
  "${chezmoi}" diff --verbose
  read -p 'Apply modifications? (y/n) ' r
  case "${r}" in
    y|Y|s|S)
      set -- apply --verbose "--source=${script_dir}"
      ;;
    *)
      set -- diff
      ;;
  esac
else
  set -- init --apply --verbose --source="${script_dir}"
fi

echo "Running 'chezmoi $*'" >&2
# exec: replace current process with chezmoi
exec "$chezmoi" "$@"