import odooApi from '@/core/api/odooApi';
import { createClient } from 'redis';
import _ from 'lodash-contrib';
import axios from 'axios';

const client = createClient();

client.on('error', (err) => console.error('Redis Client Error', err));

const connectRedis = async () => {
  if (!client.isOpen) {
    await client.connect();
  }
};

export default async function handler(req, res) {
  const { query, operation, duration } = req.query;

  res.setHeader('Cache-Control', 'no-store');

  try {
    await connectRedis();

    const cacheKey = `flashsale_product:${operation}:${query}`;

    let cachedData = await client.get(cacheKey);

    if (cachedData) {
      const data = JSON.parse(cachedData);

      if (!data || (Array.isArray(data) && data.length === 0)) {
        await client.del(cacheKey);
        return res.status(200).json({ data: [] });
      }
      return res.status(200).json({ data });
    } else {
      const qstr = String(query || '').replace(/^\?/, '');
      const dataProductSearch = await axios(
        `${process.env.NEXT_PUBLIC_SELF_HOST}/api/shop/search?${qstr}&operation=${operation}`
      );

      const payload = dataProductSearch.data;
      const arr = Array.isArray(payload) ? payload : payload?.data || [];

      if (arr.length === 0) {
        return res.status(200).json({ data: [] });
      } else {
        await client.set(
          cacheKey,
          JSON.stringify(arr),
          'EX',
          Math.max(1, parseInt(String(duration), 10) || 300)
        );
        cachedData = await client.get(cacheKey);
        return res.status(200).json({ data: JSON.parse(cachedData) });
      }
    }
  } catch (error) {
    console.error('Error interacting with Redis or fetching data:', error);
    return res.status(500).json({ error: 'Internal Server Error' });
  }
}