import pocket_friends
import json


class DataHandler:
    """
    Class that handles the hardware attributes and save files.
    """

    def __init__(self):
        # Attributes that are saved to a file to recover upon startup.
        self.attributes = {
            'version': pocket_friends.__version__,
            'time_elapsed': 0,
            'bloop': '',
            'age': 0,
            'health': 0,
            'hunger': 0,
            'happiness': 0,
            'care_counter': 0,
            'missed_care': 0,
            'adult': 0,
            'evolution_stage': '',
        }

        # Frame counter
        self.frames_passed = 0

    def write_save(self):
        """
        Writes attributes of class to "save.json" file.
        """
        with open(save_dir + '/save.json', 'w') as save_file:
            json.dump(self.attributes, save_file)
            save_file.close()

    def read_save(self):
        """
        Reads from "save.json" and inserts into attributes dictionary. Creates file if it does not exist.
        """
        # Open up the save file and read it into self.attributes.
        try:
            with open(save_dir + '/save.json', 'r') as save_file:
                self.attributes = json.load(save_file)
                save_file.close()

        # If there is no save file, write one with the defaults.
        except FileNotFoundError:
            self.write_save()

    def update(self):
        """
        Run the game logic.
        """
        self.frames_passed += 1
        # Run logic of the game every second.
        if self.frames_passed >= game_fps:

            # Add one to the age of the bloop.
            self.attributes['age'] += 1

            # Save the data when the age of the bloop is a multiple of 10.
            if self.attributes['age'] % 10 == 0:
                self.write_save()

            # Reset frame counter
            self.frames_passed = 0