#!/usr/bin/env bash

nextcloud_apps_paths_from_config() {
  local nextcloud_root="${1:-}"
  local config_php=""

  if [[ -z "${nextcloud_root}" ]]; then
    return 1
  fi

  config_php="${nextcloud_root%/}/config/config.php"
  if [[ ! -f "${config_php}" ]]; then
    return 1
  fi

  php -r '
    $configFile = $argv[1];
    $CONFIG = [];
    include $configFile;
    $appsPaths = $CONFIG["apps_paths"] ?? [];
    if (!is_array($appsPaths)) {
      exit(0);
    }
    foreach ($appsPaths as $entry) {
      if (!is_array($entry)) {
        continue;
      }
      $path = isset($entry["path"]) ? trim((string) $entry["path"]) : "";
      if ($path === "") {
        continue;
      }
      $url = isset($entry["url"]) ? trim((string) $entry["url"]) : "";
      $writable = !empty($entry["writable"]) ? "1" : "0";
      echo $path, "\t", $url, "\t", $writable, "\n";
    }
  ' "${config_php}"
}

nextcloud_apps_path_is_configured() {
  local nextcloud_root="${1:-}"
  local apps_path="${2:-}"
  local configured_path=""
  local configured_url=""
  local configured_writable=""

  if [[ -z "${nextcloud_root}" || -z "${apps_path}" ]]; then
    return 1
  fi

  while IFS=$'\t' read -r configured_path configured_url configured_writable; do
    if [[ -n "${configured_path}" && "${configured_path}" == "${apps_path}" ]]; then
      return 0
    fi
  done < <(nextcloud_apps_paths_from_config "${nextcloud_root}" 2>/dev/null || true)

  return 1
}

nextcloud_select_apps_path() {
  local nextcloud_root="${1:-}"
  local requested_path="${2:-}"
  local selected_path=""
  local default_apps_path=""
  local default_selected_path=""
  local configured_path=""
  local configured_url=""
  local configured_writable=""

  if [[ -n "${nextcloud_root}" && -n "${requested_path}" ]]; then
    if nextcloud_apps_path_is_configured "${nextcloud_root}" "${requested_path}"; then
      printf '%s\n' "${requested_path}"
      return 0
    fi
  fi

  if [[ -n "${nextcloud_root}" ]]; then
    default_apps_path="${nextcloud_root%/}/apps"
    while IFS=$'\t' read -r configured_path configured_url configured_writable; do
      if [[ -z "${configured_path}" ]]; then
        continue
      fi
      if [[ "${configured_path}" == "${default_apps_path}" ]]; then
        default_selected_path="${configured_path}"
      fi
      if [[ -z "${selected_path}" ]]; then
        selected_path="${configured_path}"
      fi
    done < <(nextcloud_apps_paths_from_config "${nextcloud_root}" 2>/dev/null || true)
  fi

  if [[ -n "${default_selected_path}" ]]; then
    printf '%s\n' "${default_selected_path}"
    return 0
  fi
  if [[ -n "${selected_path}" ]]; then
    printf '%s\n' "${selected_path}"
    return 0
  fi

  if [[ -n "${nextcloud_root}" ]]; then
    printf '%s\n' "${nextcloud_root%/}/apps"
    return 0
  fi

  return 1
}