const { Controller } = require('libflitter')

class AuthController extends Controller {
    static get services() {
        return [...super.services, 'models', 'auth'];
    }

    async get_user_info(req, res, next) {
        const User = this.models.get('auth:User')

        if ( !req.query.uid ) {
            return res.status(400).api()
        }

        const user = await User.findOne({
            uid: req.query.uid,
            provider: 'flitter',
        })

        if ( user ) {
            return res.api({
                exists: true,
                uid: user.uid,
                id: user.id,
            })
        }

        return res.api({ exists: false })
    }

    async attempt_registration(req, res, next) {
        const flitter = this.auth.get_provider('flitter')

        const form_data = {
            username: req.body.uid,
            password: req.body.password,
        }

        const errors = await flitter.validate_registration(form_data)

        if ( !req.body.fullName ) {
            errors.push('Full name is required.')
        }

        if ( req.body.password !== req.body.passwordConfirmation ) {
            errors.push('Password does not match confirmation.')
        }

        if ( errors.length ) {
            return res.api({ success: false, message: errors[0] })
        }

        const [username, attrs] = await flitter.get_registration_args(form_data)
        attrs.full_name = req.body.fullName

        const user = await flitter.register(username, attrs, undefined)
        if ( !user ) {
            return res.api({ success: false, message: 'An unknown error has occurred' })
        }

        await flitter.session(req, user)
        return res.api({ success: true })
    }

    async attempt_authentication(req, res, next) {
        const flitter = this.auth.get_provider('flitter')

        if ( !req.body.uid ) {
            return res.status(400)
                .message('Missing required field: uid')
                .api()
        }

        if ( !req.body.password ) {
            return res.status(400)
                .message('Missing required field: password')
                .api()
        }

        const user = await flitter.login(req.body.uid, req.body.password)
        if ( !user ) {
            return res.api({ success: false, message: 'Invalid username or password' })
        }

        await flitter.session(req, user)
        return res.api({ success: true })
    }

    async end_session(req, res, next) {
        const flitter = this.auth.get_provider('flitter')
        await flitter.logout(req);
        return res.api();
    }
}

module.exports = exports = AuthController