#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
ENV_FILE="${ENV_FILE:-$ROOT_DIR/.env}"

read_env_value() {
  local key="$1"
  [[ -f "$ENV_FILE" ]] || return 0
  local value
  value="$(sed -n "s/^${key}=//p" "$ENV_FILE" | tail -n 1)"
  case "$value" in
    \"*\") value="${value#\"}"; value="${value%\"}" ;;
    \'*\') value="${value#\'}"; value="${value%\'}" ;;
  esac
  printf '%s\n' "$value"
}

configured_value() {
  local key="$1"
  local default_value="$2"
  local value
  value="${!key:-}"
  if [[ -z "$value" ]]; then
    value="$(read_env_value "$key")"
  fi
  printf '%s\n' "${value:-$default_value}"
}

resolve_app_path() {
  local raw="$1"
  if [[ "$raw" = /* ]]; then
    printf '%s\n' "$raw"
  else
    printf '%s\n' "$ROOT_DIR/${raw#./}"
  fi
}

ensure_dir() {
  local path
  path="$(resolve_app_path "$(configured_value "$1" "$2")")"
  mkdir -p "$path"
}

ensure_file_parent() {
  local path
  local parent
  path="$(resolve_app_path "$(configured_value "$1" "$2")")"
  parent="$(dirname "$path")"
  mkdir -p "$parent"
}

ensure_dir "APP_DATA_DIR" "./data"