var router = require('express').Router(),
    mongoose = require('mongoose'),
    User = mongoose.model('User');
const auth = require('../auth');

// Preload user profile on routes with ':username'
router.param('username', function (req, res, next, username) {
    User.findOne({ username: username }).then(function (user) {
        if (!user) {
            return res.sendStatus(404);
        }
        req.profile = user;

        return next();
    }).catch(next);
});

router.get('/:username', auth.optional, function (req, res) {
    if (req.payload) {
        User.findById(req.payload.id).then(function (user) {
            if (!user) {
                return res.json({ profile: req.profile.toProfileJSONFor(false) });
            }
            return res.json({ profile: req.profile.toProfileJSONFor(user) });
        });
    } else {
        return res.json({ profile: req.profile.toProfileJSONFor(false) });
    }
});

router.post('/:username/follow', auth.required, function (req, res, next) {
    let profileId = req.profile._id;

    User.findById(req.payload.id).then(function (user) {
        if (!user) {
            return res.status(401).json({ errors: { "Unauthorized": "autentification requise" } });
        }
        return user.follow(profileId).then(function () {
            return res.json({ profile: req.profile.toProfileJSONFor(user) });
        });
    }).catch(next);
});

router.delete('/:username/follow', auth.required, function (req, res, next) {
    let profileId = req.profile._id;

    User.findById(req.payload.id).then(function (user) {
        if (!user) {
            return res.status(401).json({ errors: { "Unauthorized": "autentification requise" } });
        }
        return user.unfollow(profileId).then(function () {
            return res.json({ profile: req.profile.toProfileJSONFor(user) });
        });
    }).catch(next);
});

module.exports = router;