from json import load, dump
from os.path import join, exists
from uuid import uuid1

from pycs.projects.VideoFile import VideoFile


class UnmanagedVideoFile(VideoFile):
    def __init__(self, obj, project):
        obj['prev'] = None
        obj['next'] = None

        super().__init__(obj, project, 'data')
        del self['predictionResults']

    def prev(self, value):
        self['prev'] = value['id']

    def next(self, value):
        self['next'] = value['id']

    def length(self, value):
        self['length'] = value

    @property
    def data_path(self):
        return join('projects', self.project['id'], 'data', self['id'] + '.json')

    def __load(self):
        if not exists(self.data_path):
            return {}

        with open(self.data_path, 'r') as f:
            return load(f)

    def __write(self, data):
        with open(self.data_path, 'w') as f:
            dump(data, f, indent=4)

    def get_data(self):
        copy = self.copy()
        copy['predictionResults'] = self.__load()
        return copy

    def add_global_result(self, result, origin='user'):
        self.remove_global_result()
        self.add_result(result, origin)

    def remove_global_result(self):
        data = self.__load()

        delete = []
        for result_id in data:
            if 'x' not in data[result_id]:
                delete.append(result_id)

        for result_id in delete:
            del data[result_id]

        self.__write(data)

    def add_result(self, result, origin='user'):
        data = self.__load()

        result['id'] = str(uuid1())
        result['origin'] = origin

        data[result['id']] = result

        self.__write(data)

    def remove_result(self, identifier):
        data = self.__load()

        del data[identifier]

        self.__write(data)

    def remove_pipeline_results(self):
        data = self.__load()

        remove = list(filter(lambda k: data[k]['origin'] == 'pipeline', data.keys()))

        for key in remove:
            del data[key]

        self.__write(data)

    def remove_results(self):
        self.__write({})

    def update_result(self, identifier, result, origin='user'):
        data = self.__load()

        result['id'] = identifier
        result['origin'] = origin

        data[identifier] = result

        self.__write(data)