import sys
from jschema_to_python.python_file_generator import PythonFileGenerator
import jschema_to_python.utilities as util


class InitFileGenerator(PythonFileGenerator):
    def __init__(self, module_name, root_schema, root_class_name, output_directory):
        super(InitFileGenerator, self).__init__(output_directory)
        self.module_name = module_name
        self.root_schema = root_schema
        self.root_class_name = root_class_name

    def __del__(self):
        sys.stdout = sys.__stdout__

    def generate(self):
        file_path = self.make_output_file_path("__init__.py")
        with open(file_path, "w") as sys.stdout:
            self.write_generation_comment()
            self.write_import_statements()

    def write_import_statements(self):
        self.write_import_statement(self.root_class_name)

        definition_schemas = self.root_schema.get("definitions")
        if definition_schemas:
            definition_keys = sorted(definition_schemas.keys())
            for definition_key in definition_keys:
                class_name = util.capitalize_first_letter(definition_key)
                self.write_import_statement(class_name)

    def write_import_statement(self, class_name):
        class_module_name = util.class_name_to_private_module_name(class_name)
        print(
            "from "
            + self.module_name
            + "."
            + class_module_name
            + " import "
            + class_name
        )