const express = require('express');
const router = express.Router();
const stats = require('../services/channelStats');
const { query } = require('../config/db');

// POST /api/channel-stats/collect — собрать статистику (cron, раз в час)
router.post('/collect', async (req, res) => {
  try {
    const results = await stats.collectAll();
    res.json({ ok: true, results });
  } catch (err) { res.status(500).json({ error: err.message }); }
});

// GET /api/channel-stats/:channelId/summary — сводка по каналу
router.get('/:channelId/summary', async (req, res) => {
  try {
    const summary = await stats.getChannelSummary(parseInt(req.params.channelId));
    res.json(summary);
  } catch (err) { res.status(500).json({ error: err.message }); }
});

// GET /api/channel-stats/:channelId/history?days=30 — история подписчиков
router.get('/:channelId/history', async (req, res) => {
  try {
    const days = Math.min(parseInt(req.query.days) || 30, 365);
    const history = await stats.getMembersHistory(parseInt(req.params.channelId), days);
    res.json(history);
  } catch (err) { res.status(500).json({ error: err.message }); }
});

module.exports = router;