from glob import glob
from json import load, dump
from os import path, mkdir
from time import time
from uuid import uuid1

from pycs import ApplicationStatus


class ProjectManager:
    def __init__(self, app_status: ApplicationStatus):
        # TODO create projects folder if it does not exist

        # find projects
        for folder in glob('projects/*'):
            # load project.json
            with open(path.join(folder, 'project.json'), 'r') as file:
                project = load(file)
                project['status'] = 'close'

                app_status['projects'].append(project)

        # subscribe to changes
        app_status['projects'].subscribe(self.update)

    def update(self, data):
        # detect project to create
        for i in range(len(data)):
            if data[i]['status'] == 'create':
                # create dict representation
                uuid = str(uuid1())

                data[i] = {
                    'id': uuid,
                    'status': 'close',
                    'name': data[i]['name'],
                    'description': data[i]['description'],
                    'created': int(time()),
                    'access': 0,
                    'pipeline': {
                        'model-distribution': data[i]['model']
                    }
                }

                # create project directory
                folder = path.join('projects', uuid)
                mkdir(folder)

                # create project.json
                with open(path.join(folder, 'project.json'), 'w') as file:
                    dump(data[i], file, indent=4)

        # detect project to load
        to_load = list(filter(lambda x: x['status'] == 'load', data))
        for project in to_load:
            # TODO actually load pipeline
            project['status'] = 'open'
            project['access'] = time()