#!/usr/bin/env -S -- bash

# CONSTANTS

TMP_ERROR=$(mktemp -t "$(basename $0).XXXXXXXX" --tmpdir=/run/user/$(id -u))

# FUNCTIONS

function exit {
  code=${1:-0}
  echo
  echo "ERROR #${code} due to:"

  stack_lines=("${BASH_LINENO[@]}")
  stack_functions=("${FUNCNAME[@]}")
  stack_sources=("${BASH_SOURCE[@]}")

  tmp_error=${2:-/dev/null}
  [[ -s $tmp_error ]] && cat $tmp_error && rm $tmp_error

  echo "${stack_lines[@]}"
  echo "${stack_functions[@]}"
  echo "${stack_sources[@]}"

  trap - ERR TERM INT EXIT
  builtin exit $code
}

# MAIN

opt_debug=""
[[ $1 == '-x' || $1 == '--debug' ]] && opt_debug="-x" && shift

command=$1
shift
original_args=("$@")
quoted_args=()
for i in "${original_args[@]}"; do quoted_args+=("${i@Q}"); done

set -TEue -o pipefail
export -f exit
# echo PROCESS START

bash $opt_debug -c "
  set -TEue -o pipefail;
  trap 'exit \$? $TMP_ERROR' ERR TERM INT EXIT; 
  source $command ${quoted_args[*]}
  " 3>&1 1>&2 2>&3 | tee $TMP_ERROR
# TODO: delay the stacktrace message to output to stderr, idea: $TMP_ERROR + $TMP_STACK

# echo PROCESS END succesfully