from file_handlers import FileHandler
from version import Version

class VersionRepository():

    def __init__(self, file):
        self.file = file
        self.file_handler = None                
    
    def load_file(self):
        self.file_handler = FileHandler.from_file_path(self.file)
        return self.file_handler

    def write_file(self, version_string):
        if self.file_handler is None:
            raise Exception('Version was not created by load_file method.')        
        else:
            self.file_handler.write(version_string)
    
    def parse_file(self):
        version_list, is_snapshot = self.file_handler.parse()
        return version_list, is_snapshot
    
    def get_version(self):        

        self.file_handler = self.load_file()
        version_list, is_snapshot = self.parse_file()
        version = Version(version_list)
        version.is_snapshot = is_snapshot
        
        return version