import { promises as fs } from 'fs';
import path from 'path';
import { authOptions } from '../../../auth/[...nextauth]';
import { getServerSession } from 'next-auth/next';

export default async function handler(req, res) {
    if (req.method == 'PUT') {
        //Verify that the user is logged in.
        const session = await getServerSession(req, res, authOptions);
        if (!session) {
            res.status(401).json({ message: 'You must be logged in.' });
            return;
        }

        //The data we expect to receive
        const { displayDetails } = req.body;
        //We check that we receive displayDetails and it must be a bool.
        if (typeof displayDetails != 'boolean') {
            //If a variable is empty.
            res.status(422).json({
                message: 'Unexpected data',
            });
            //A return to make sure we don't go any further if data are incorrect.
            return;
        }
        try {
            //console.log('API call (PUT)');
            //Find the absolute path of the json directory
            const jsonDirectory = path.join(process.cwd(), '/config');
            let repoList = await fs.readFile(
                jsonDirectory + '/repo.json',
                'utf8'
            );
            //Parse the repoList
            repoList = JSON.parse(repoList);

            //Find the ID in the data and change the values transmitted by the form
            let newRepoList = repoList.map((repo) =>
                repo.id == req.query.slug
                    ? {
                          ...repo,
                          displayDetails: displayDetails,
                      }
                    : repo
            );
            //Stringify the newRepoList to write it into the json file.
            newRepoList = JSON.stringify(newRepoList);
            //Write the new json
            fs.writeFile(jsonDirectory + '/repo.json', newRepoList, (err) => {
                if (err) console.log(err);
            });
            res.status(200).json({ message: 'Envoi API réussi' });
        } catch (error) {
            //Log for backend
            console.log(error);
            //Log for frontend
            if (error.code == 'ENOENT') {
                res.status(500).json({
                    status: 500,
                    message: 'No such file or directory',
                });
            } else {
                res.status(500).json({
                    status: 500,
                    message: 'API error, contact the administrator',
                });
            }
            return;
        }
    } else {
        res.status(405).json({
            status: 405,
            message: 'Method Not Allowed ',
        });
    }
}
