import { getDb } from '../database/database';
import { localTimestamp } from '../utils/time';

export interface SystemConfigEntry {
  key: string;
  value: string;
  description?: string;
  updated_at?: string;
}

export function getAllSystemConfigs(): SystemConfigEntry[] {
  const db = getDb();
  return db.prepare('SELECT key, value, description, updated_at FROM system_configs ORDER BY key').all() as SystemConfigEntry[];
}

export function getSystemConfig(key: string): string | null {
  const db = getDb();
  const row = db.prepare('SELECT value FROM system_configs WHERE key = ?').get(key) as { value: string } | undefined;
  return row?.value ?? null;
}

export function updateSystemConfig(key: string, value: string): void {
  const db = getDb();
  db.prepare(
    "UPDATE system_configs SET value = ?, updated_at = ? WHERE key = ?"
  ).run(value, localTimestamp(), key);
}

export function updateSystemConfigs(entries: { key: string; value: string }[]): void {
  const db = getDb();
  const update = db.prepare(
    "UPDATE system_configs SET value = ?, updated_at = ? WHERE key = ?"
  );
  const tx = db.transaction((items: { key: string; value: string }[]) => {
    for (const item of items) {
      update.run(item.value, localTimestamp(), item.key);
    }
  });
  tx(entries);
}