import { DatabaseSync } from "node:sqlite";

const DB_PATH = process.env.RIKX_PLATFORM_DB_PATH || "/rikx-platform-data/app.db";

let _db: DatabaseSync | null = null;

export function getPlatformDb(): DatabaseSync {
  if (!_db) {
    _db = new DatabaseSync(DB_PATH);
    _db.exec("PRAGMA journal_mode = WAL");
    _db.exec("PRAGMA foreign_keys = ON");
  }
  return _db;
}

export type PlatformAccount = {
  id: number;
  name: string;
  slug: string;
  created_at: string;
};

export type PlatformUser = {
  id: number;
  account_id: number;
  email: string;
  name: string;
  role: string;
  created_at: string;
};

export function listAccounts(): (PlatformAccount & { user_count: number })[] {
  return getPlatformDb()
    .prepare(
      `SELECT a.*, COUNT(u.id) as user_count
       FROM accounts a
       LEFT JOIN users u ON u.account_id = a.id
       GROUP BY a.id
       ORDER BY a.created_at DESC`
    )
    .all() as (PlatformAccount & { user_count: number })[];
}

export function getAccount(id: number): PlatformAccount | undefined {
  return getPlatformDb()
    .prepare("SELECT * FROM accounts WHERE id = ?")
    .get(id) as PlatformAccount | undefined;
}

// Namen van alle sociaal ondernemers, voor keuzelijsten en overzichten in Rikx Beheer.
// Geeft een lege lijst als de platformdatabase niet bereikbaar is, zodat projectpagina's blijven werken.
export function listAccountNames(): { id: number; name: string }[] {
  try {
    return (
      getPlatformDb().prepare("SELECT id, name FROM accounts ORDER BY name COLLATE NOCASE").all() as {
        id: number;
        name: string;
      }[]
    ).map((a) => ({ id: a.id, name: a.name }));
  } catch (err) {
    console.error("Platformdatabase niet bereikbaar:", err);
    return [];
  }
}