#!/usr/bin/env bash
# Environment loader and profile support
# Provides: load_env [--profile <name>] [--file <path>] and helpers

set -euo pipefail

DEFAULT_ENV_FILE="${DEFAULT_ENV_FILE:-.env}"

load_env() {
  local profile=""; local file="$DEFAULT_ENV_FILE"; local opt
  while [[ $# -gt 0 ]]; do
    opt="$1"
    case "$opt" in
      --profile)
        profile="$2"; shift 2;;
      --file)
        file="$2"; shift 2;;
      *)
        break;;
    esac
  done
  if [ -f "$file" ]; then
    local had_nounset=0
    if [[ $- == *u* ]]; then
      had_nounset=1
      set +u
    fi
    # shellcheck disable=SC2046
    set -a; . "$file"; set +a
    (( had_nounset )) && set -u
  fi
  if [ -n "$profile" ]; then
    local pf="${file}.${profile}"
    if [ -f "$pf" ]; then
      local had_nounset_profile=0
      if [[ $- == *u* ]]; then
        had_nounset_profile=1
        set +u
      fi
      # shellcheck disable=SC2046
      set -a; . "$pf"; set +a
      (( had_nounset_profile )) && set -u
    fi
  fi
}

require_env() {
  local name="$1"
  if [ -z "${!name:-}" ]; then
    echo "Missing required env: $name" >&2
    return 1
  fi
}

current_profile() {
  echo "${ENV_PROFILE:-}"
}