import os
import typing
import uuid
from fastapi import UploadFile
from tortoise.fields import TextField
from tortoise import ConfigurationError
import io
from services.io import delete_root_slash, add_fast_api_root, get_filename_from_path, get_or_create_dir, is_binary_file, get_filename, remove_fastapi_root


class FileField(TextField):
    def __init__(self, *, upload_root: str, **kwargs):
        super().__init__(**kwargs)
        self.upload_root = delete_root_slash(upload_root)

        self.upload_root = get_or_create_dir(os.path.join(
            os.environ.get('FASTAPI_ROOT_URL'), self.upload_root))

    def _is_binary(self, file: UploadFile):
        return isinstance(file, io.BytesIO)

    def to_db_value(self, value: typing.IO, instance):
        if not isinstance(value, str):
            super().validate(value)
            value.seek(0)
            is_binary = self._is_binary(value)
            name = get_filename(value)

            parent = get_or_create_dir(os.path.join(
                self.upload_root, instance.id_code))

            mode = 'w+' if not is_binary else 'wb+'

            path = os.path.join(self.upload_root, parent, name)

            with open(path, mode) as f:
                f.write(value.read())

            return remove_fastapi_root(path)
        return value

    def to_python_value(self, value: str):
        return value

"""
abs_path = get_abs_path_from_relative_to_root(value)
            if is_binary_file(abs_path):
                mode = 'rb'
                buffer = io.BytesIO()
            else:
                mode = 'r'
                buffer = io.StringIO()

            buffer.name = get_filename_from_path(value)

            with open(abs_path, mode) as f:
                buffer.write(f.read())

            buffer.seek(0)
            return buffer
"""