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 file_handler

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

        self.file_handler = self.load_file(self.file)
        version_list, is_snapshot = self.parse_file(file_handler)

        return Version(version_list, release_type)