#!/usr/bin/env bash

if [[ -n "${ATLAS_COMMON_SH_LOADED:-}" ]]; then
  return 0
fi
ATLAS_COMMON_SH_LOADED=1

ATLAS_FRAMEWORK_VERSION="2.0.0"

ATLAS_EXIT_OK=0
ATLAS_EXIT_GENERAL=1
ATLAS_EXIT_USAGE=2
ATLAS_EXIT_PREREQ=3
ATLAS_EXIT_VALIDATION=4
ATLAS_EXIT_UNSAFE=5
ATLAS_EXIT_INTERNAL=10

ATLAS_DRY_RUN=0
ATLAS_VERBOSE=0
ATLAS_SCRIPT_NAME="$(basename "${0:-atlas-script}")"

atlas_strict_mode() {
  set -Eeuo pipefail
}

atlas_set_script_name() {
  ATLAS_SCRIPT_NAME="$1"
}

atlas_enable_dry_run() {
  ATLAS_DRY_RUN=1
}

atlas_enable_verbose() {
  ATLAS_VERBOSE=1
}

atlas_is_dry_run() {
  [[ "${ATLAS_DRY_RUN}" == "1" ]]
}

atlas_is_verbose() {
  [[ "${ATLAS_VERBOSE}" == "1" ]]
}

atlas_usage_error() {
  local message="$1"
  printf 'ERROR: %s\n' "$message" >&2
  return 0
}

atlas_require_command() {
  local command_name="$1"
  if ! command -v "$command_name" >/dev/null 2>&1; then
    printf 'ERROR: required command not found: %s\n' "$command_name" >&2
    return "${ATLAS_EXIT_PREREQ}"
  fi
}

atlas_have_command() {
  command -v "$1" >/dev/null 2>&1
}

atlas_require_sudo_noninteractive() {
  if [[ "${EUID}" -eq 0 ]]; then
    return 0
  fi
  sudo -n true >/dev/null 2>&1
}

atlas_run() {
  if atlas_is_dry_run; then
    printf '[DRY-RUN] %s\n' "$*"
    return 0
  fi
  "$@"
}

atlas_sudo_run() {
  if [[ "${EUID}" -eq 0 ]]; then
    atlas_run "$@"
  else
    atlas_run sudo -n "$@"
  fi
}

atlas_print_version() {
  printf '%s %s\n' "${ATLAS_SCRIPT_NAME}" "${ATLAS_FRAMEWORK_VERSION}"
}

atlas_install_error_trap() {
  trap 'atlas_on_error $? $LINENO "$BASH_COMMAND"' ERR
}

atlas_install_cleanup_trap() {
  trap 'atlas_on_exit' EXIT
}

atlas_on_error() {
  local exit_code="$1"
  local line_no="$2"
  local command_text="$3"
  if declare -F atlas_log_error >/dev/null 2>&1; then
    atlas_log_error "Command failed at line ${line_no} with exit ${exit_code}: ${command_text}"
  else
    printf 'ERROR: command failed at line %s with exit %s\n' "$line_no" "$exit_code" >&2
  fi
  return "$exit_code"
}

atlas_on_exit() {
  :
}