import UserService from '../services/user.js';
import GroupService from '../services/group.js';
import log from '../utils/log.js';
import statuses from '../utils/status.js';

const TAG = "/middlewares/existance.js"

const usernameExists = async (req, res, next) => {
    try {
        let { username } = req.body;

        let user = await UserService.getByUsername(username);
        if (!user || user == statuses.not_found) return res.status(404).send("User not found");
        next();
    } catch (e) { return res.status(500).send(log.unknownError(`${TAG}/usernameExists: ${e}`)); }
};

const usernameDoesntExist = async (req, res, next) => {
    try {
        let { username } = req.body;

        let user = await UserService.getByUsername(username);
        if (user || user != statuses.not_found) return res.status(400).send("Such username already taken");
        next();
    } catch (e) { return res.status(500).send(log.unknownError(`${TAG}/usernameDoesntExist: ${e}`)); }
}

const groupExists = async (req, res, next) => {
    try {

        const { id } = req.params;

        let group = await GroupService.getById(id);

        if (!group || group == statuses.not_found) return res.status(404).send("Group not found");
        next();
    } catch (e) { return res.status(500).send(log.unknownError(`${TAG}/groupExists: ${e}`)) }
}

const groupDoesntExist = async (req, res, next) => {
    try {

        const { id } = req.params;

        let group = await GroupService.getById(id);

        if (group || group != statuses.not_found) return res.status(400).send("Such group already exists");
        next();
    } catch (e) { return res.status(500).send(log.unknownError(`${TAG}/groupDoesntExist: ${e}`)) }
}
export default { usernameExists, usernameDoesntExist, groupExists, groupDoesntExist }