import fs from 'fs';
import path from 'path';
import { NextApiRequest, NextApiResponse } from 'next';

export default async function handler(req: NextApiRequest, res: NextApiResponse) {
    const { locale, type } = req.query;
    const baseFilePath = path.join(process.cwd(), `content/i18n/${locale}.json`);
    const modifiedFilePath = path.join(process.cwd(), `content/i18n/${locale}.modified.json`);

    let translations = {};

    try {
        translations = JSON.parse(fs.readFileSync(baseFilePath, 'utf8'));
        if (fs.existsSync(modifiedFilePath)) {
            const modifiedTranslations = JSON.parse(fs.readFileSync(modifiedFilePath, 'utf8'));
            translations = { ...translations, ...modifiedTranslations };
        }
    } catch (error) {
        console.error('Error loading translation files:', error);
    }

    switch (req.method) {
        case 'GET':
            res.status(200).json(translations);
            break;
        case 'POST':
            try {
                fs.writeFileSync(modifiedFilePath, JSON.stringify(req.body, null, 2), 'utf8');
                res.status(200).json({ status: 'Updated' });
            } catch (error) {
                console.error('Error writing modified translation file:', error);
                res.status(500).json({ error: 'Failed to update translation file' });
            }
            break;
        default:
            res.setHeader('Allow', ['GET', 'POST']);
            res.status(405).end(`Method ${req.method} Not Allowed`);
    }
}