from flask import abort, jsonify
from flask.views import View

from pycs.database.Label import Label
from pycs.database.Project import Project


class ListLabelTree(View):
    """
    return a list of labels for a given project
    """
    # pylint: disable=arguments-differ
    methods = ['GET']


    def dispatch_request(self, identifier):

        project = Project.query.get(identifier)
        if project is None:
            return abort(404)

        return jsonify(project.label_tree())