const express = require('express');
const router = express.Router();
const { query } = require('../config/db');
const { runAutogen, runAutogenForCategory, getAutogenStatus, TOPIC_BANK } = require('../services/autogen');

// GET /api/autogen/status — текущий статус и настройки
router.get('/status', async (_, res) => {
  try {
    const status = await getAutogenStatus();
    res.json(status);
  } catch (err) { res.status(500).json({ error: err.message }); }
});

// POST /api/autogen/run — запустить генерацию (cron или ручной запуск)
router.post('/run', async (req, res) => {
  try {
    const { category } = req.body;
    // Запускаем фоново, сразу отвечаем
    res.json({ ok: true, message: 'Generation started' });
    runAutogen({ forceCategory: category || null }).catch(err =>
      console.error('[Autogen] run error:', err.message)
    );
  } catch (err) { res.status(500).json({ error: err.message }); }
});

// PATCH /api/autogen/settings/:category — обновить настройки
router.patch('/settings/:category', async (req, res) => {
  try {
    const { enabled, per_day, run_hour, run_minute } = req.body;
    const fields = []; const vals = []; let i = 1;
    if (enabled !== undefined)     { fields.push(`enabled=$${i++}`);     vals.push(enabled); }
    if (per_day !== undefined)     { fields.push(`per_day=$${i++}`);     vals.push(per_day); }
    if (run_hour !== undefined)    { fields.push(`run_hour=$${i++}`);    vals.push(run_hour); }
    if (run_minute !== undefined)  { fields.push(`run_minute=$${i++}`);  vals.push(run_minute); }
    if (!fields.length) return res.status(400).json({ error: 'Nothing to update' });
    vals.push(req.params.category);
    await query(`UPDATE autogen_settings SET ${fields.join(',')} WHERE category=$${i}`, vals);
    res.json({ ok: true });
  } catch (err) { res.status(500).json({ error: err.message }); }
});

// GET /api/autogen/queue — очередь тем
router.get('/queue', async (_, res) => {
  try {
    const { rows } = await query(
      `SELECT * FROM content_queue ORDER BY priority DESC, created_at ASC LIMIT 100`
    );
    res.json(rows);
  } catch (err) { res.status(500).json({ error: err.message }); }
});

// POST /api/autogen/queue — добавить тему в очередь
router.post('/queue', async (req, res) => {
  try {
    const { category, topic, tags = [], keywords = [], priority = 5 } = req.body;
    if (!category || !topic) return res.status(400).json({ error: 'category and topic required' });
    const { rows } = await query(
      `INSERT INTO content_queue (category, topic, tags, keywords, priority)
       VALUES ($1,$2,$3,$4,$5) RETURNING *`,
      [category, topic, JSON.stringify(tags), JSON.stringify(keywords), priority]
    );
    res.json(rows[0]);
  } catch (err) { res.status(500).json({ error: err.message }); }
});

// DELETE /api/autogen/queue/:id
router.delete('/queue/:id', async (req, res) => {
  try {
    await query(`DELETE FROM content_queue WHERE id=$1`, [req.params.id]);
    res.json({ ok: true });
  } catch (err) { res.status(500).json({ error: err.message }); }
});

// GET /api/autogen/topics — банк тем
router.get('/topics', async (_, res) => {
  res.json(TOPIC_BANK);
});

module.exports = router;