import { Router } from 'express';
import https from 'https';
import db from '../db/db';

const router = Router();

function getSetting(key: string): string {
  return (db.prepare('SELECT value FROM settings WHERE key = ?').get(key) as any)?.value ?? '';
}

router.get('/', (_req, res) => {
  const apiKey   = getSetting('weather_api_key').trim();
  const location = getSetting('weather_location').trim();
  const units    = getSetting('weather_units').trim() || 'imperial';

  if (!apiKey || !location) {
    return res.json({ configured: false });
  }

  const url =
    `https://api.openweathermap.org/data/2.5/weather` +
    `?q=${encodeURIComponent(location)}` +
    `&appid=${encodeURIComponent(apiKey)}` +
    `&units=${encodeURIComponent(units)}`;

  https.get(url, (apiRes) => {
    let raw = '';
    apiRes.on('data', (chunk: Buffer) => { raw += chunk.toString(); });
    apiRes.on('end', () => {
      try {
        const data = JSON.parse(raw);
        if (apiRes.statusCode !== 200) {
          return res.json({ configured: true, error: data.message ?? 'Weather API error' });
        }
        res.json({
          configured:  true,
          city:        data.name as string,
          temp:        Math.round(data.main.temp as number),
          feels_like:  Math.round(data.main.feels_like as number),
          humidity:    data.main.humidity as number,
          description: (data.weather?.[0]?.description ?? '') as string,
          icon:        (data.weather?.[0]?.icon ?? '') as string,
          units,
        });
      } catch {
        res.json({ configured: true, error: 'Failed to parse weather response' });
      }
    });
  }).on('error', (err: Error) => {
    res.json({ configured: true, error: err.message });
  });
});

export default router;