import { Router, Request, Response } from 'express';
import { asyncRoute } from '../asyncRoute';
import {
  getSettings,
  updateSettings,
  HOURS_SETTINGS,
  TEXT_SETTINGS,
  SettingName
} from '../adminSettings';

const router = Router();

router.get('/', asyncRoute(async (_req: Request, res: Response) => {
  res.json(await getSettings());
}));

router.put('/', asyncRoute(async (req: Request, res: Response) => {
  const values: Partial<Record<SettingName, number | string>> = {};

  // Only what was sent is validated and written, so a caller updating one field
  // does not have to echo the others back to avoid clobbering them.
  for (const name of HOURS_SETTINGS) {
    const raw = req.body[name];
    if (raw === undefined) continue;
    const hours = parseFloat(raw);
    if (Number.isNaN(hours) || hours <= 0) {
      return res.status(400).json({ error: `${name} must be a positive number` });
    }
    values[name] = hours;
  }

  for (const name of TEXT_SETTINGS) {
    const raw = req.body[name];
    if (raw === undefined) continue;
    if (typeof raw !== 'string' || raw.trim() === '') {
      return res.status(400).json({ error: `${name} cannot be empty` });
    }
    values[name] = raw;
  }

  await updateSettings(values);
  res.json(await getSettings());
}));

export default router;