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

from pycs.database.Project import Project


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

    def dispatch_request(self, project_id: int, start: int, length: int, collection_id: int = None):
        # find project
        project = Project.query.get(project_id)
        if project is None:
            return abort(404)

        # get count and files
        if collection_id is None:
            count = project.count_files()
            files = list(project.get_files(start, length))

        elif collection_id == 0:
            count = project.count_files_without_collection()
            files = list(project.files_without_collection(start, length))

        else:
            collection = project.collection(collection_id)
            if collection is None:
                return abort(404)

            count = collection.count_files()
            files = list(collection.files(start, length))

        # return files
        return jsonify({
            'count': count,
            'files': files
        })