import { Router, Request, Response } from 'express';
import { query } from '../db/client';
import { logger } from '../services/logger';

/**
 * Dev-only Routes — werden in Production blockiert
 * Erlaubt Daten-Manipulation für Testzwecke
 */
const router = Router();

// Sicherheitscheck: nur in Development verfügbar
router.use((_req: Request, res: Response, next: Function) => {
  if (process.env.NODE_ENV === 'production') {
    res.status(404).json({ error: 'Not found' });
    return;
  }
  next();
});

/**
 * POST /api/dev/match/:id/set-time
 * Setzt das Datum eines Spiels auf einen bestimmten Zeitpunkt
 * Body: { minutesFromNow: number }  (negativ = Vergangenheit)
 */
router.post('/match/:id/set-time', async (req: Request, res: Response): Promise<void> => {
  const matchId = parseInt(req.params.id);
  const { minutesFromNow } = req.body as { minutesFromNow: number };

  if (isNaN(matchId) || typeof minutesFromNow !== 'number') {
    res.status(400).json({ error: 'matchId und minutesFromNow erforderlich' });
    return;
  }

  const newDate = new Date(Date.now() + minutesFromNow * 60 * 1000);

  try {
    // Original-Datum beim ersten set-time sichern (nur wenn noch nicht gesetzt)
    await query(
      `UPDATE matches
       SET original_utc_date = COALESCE(original_utc_date, utc_date),
           utc_date = $1
       WHERE id = $2`,
      [newDate.toISOString(), matchId]
    );
    logger.info(`[DEV] Match ${matchId} utc_date gesetzt auf ${newDate.toISOString()}`);
    res.json({ success: true, matchId, newDate: newDate.toISOString(), minutesFromNow });
  } catch (error) {
    res.status(500).json({ error: (error as Error).message });
  }
});

/**
 * POST /api/dev/match/:id/set-status
 * Setzt den Status eines Spiels (z.B. FINISHED, IN_PLAY, TIMED)
 * Body: { status: string, scoreHome?: number, scoreAway?: number }
 */
router.post('/match/:id/set-status', async (req: Request, res: Response): Promise<void> => {
  const matchId = parseInt(req.params.id);
  const { status, scoreHome, scoreAway } = req.body as {
    status: string;
    scoreHome?: number;
    scoreAway?: number;
  };

  const VALID_STATUSES = ['TIMED', 'SCHEDULED', 'IN_PLAY', 'PAUSED', 'FINISHED'];
  if (!VALID_STATUSES.includes(status)) {
    res.status(400).json({ error: `Status muss einer von: ${VALID_STATUSES.join(', ')} sein` });
    return;
  }

  try {
    await query(
      `UPDATE matches SET status = $1, score_home = $2, score_away = $3 WHERE id = $4`,
      [status, scoreHome ?? null, scoreAway ?? null, matchId]
    );
    logger.info(`[DEV] Match ${matchId} Status → ${status}`);
    res.json({ success: true, matchId, status, scoreHome, scoreAway });
  } catch (error) {
    res.status(500).json({ error: (error as Error).message });
  }
});

/**
 * POST /api/dev/reset-match
 * Setzt ein einzelnes Spiel zurück: Status → TIMED, Score → null, null
 * Body: { matchId?: number }  — ohne matchId werden ALLE Spiele zurückgesetzt
 */
router.post('/reset-match', async (req: Request, res: Response): Promise<void> => {
  const { matchId } = req.body as { matchId?: number };
  try {
    if (matchId) {
      await query(
        `UPDATE matches
         SET status       = 'TIMED',
             score_home   = NULL,
             score_away   = NULL,
             utc_date     = COALESCE(original_utc_date, utc_date),
             original_utc_date = NULL
         WHERE id = $1`,
        [matchId]
      );
      logger.info(`[DEV] Match ${matchId} zurückgesetzt auf TIMED + Original-Datum`);
      res.json({ success: true, reset: 'single', matchId });
    } else {
      const result = await query<{ id: number }>(
        `UPDATE matches
         SET status            = 'TIMED',
             score_home        = NULL,
             score_away        = NULL,
             utc_date          = COALESCE(original_utc_date, utc_date),
             original_utc_date = NULL
         WHERE status IN ('IN_PLAY','PAUSED','FINISHED')
            OR original_utc_date IS NOT NULL
         RETURNING id`
      );
      logger.info(`[DEV] ${result.length} Spiele zurückgesetzt`);
      res.json({ success: true, reset: 'all', count: result.length });
    }
  } catch (error) {
    res.status(500).json({ error: (error as Error).message });
  }
});

/**
 * POST /api/dev/reset
 * Setzt alle manipulierten Spiele zurück (löscht Dev-Tipps, setzt Status zurück)
 * Nur Spiele die durch Dev-User angelegt wurden
 */
router.post('/reset-tips', async (req: Request, res: Response): Promise<void> => {
  const { userId } = req.body as { userId?: string };
  try {
    const result = await query<{ count: string }>(
      `DELETE FROM tips WHERE user_id = $1 RETURNING id`,
      [userId ?? 'dev-user-001']
    );
    await query('REFRESH MATERIALIZED VIEW CONCURRENTLY leaderboard');
    res.json({ success: true, deletedTips: result.length });
  } catch (error) {
    res.status(500).json({ error: (error as Error).message });
  }
});

export default router;