# (c) 2020, Alexei Znamensky <russoz@gmail.com>
# Copyright (c) 2020, Ansible Project
# Simplified BSD License (see LICENSES/BSD-2-Clause.txt or https://opensource.org/licenses/BSD-2-Clause)
# SPDX-License-Identifier: BSD-2-Clause

from __future__ import annotations

import typing as t

from ansible.module_utils.basic import AnsibleModule
from ansible_collections.community.general.plugins.module_utils.mh.exceptions import ModuleHelperException as _MHE
from ansible_collections.community.general.plugins.module_utils.mh.deco import module_fails_on_exception


class ModuleHelperBase:
    module: dict[str, t.Any] | None = None  # TODO: better spec using t.TypedDict
    ModuleHelperException = _MHE
    _delegated_to_module: tuple[str, ...] = (
        "check_mode",
        "get_bin_path",
        "warn",
        "deprecate",
        "debug",
    )

    def __init__(self, module=None):
        self._changed = False

        if module:
            self.module = module

        if not isinstance(self.module, AnsibleModule):
            self.module = AnsibleModule(**self.module)

    @property
    def diff_mode(self):
        return self.module._diff

    @property
    def verbosity(self):
        return self.module._verbosity

    def do_raise(self, *args, **kwargs):
        raise _MHE(*args, **kwargs)

    def __getattr__(self, attr):
        if attr in self._delegated_to_module:
            return getattr(self.module, attr)
        raise AttributeError(f"ModuleHelperBase has no attribute '{attr}'")

    def __init_module__(self):
        pass

    def __run__(self):
        raise NotImplementedError()

    def __quit_module__(self):
        pass

    def __changed__(self):
        raise NotImplementedError()

    @property
    def changed(self):
        try:
            return self.__changed__()
        except NotImplementedError:
            return self._changed

    @changed.setter
    def changed(self, value):
        self._changed = value

    def has_changed(self):
        raise NotImplementedError()

    @property
    def output(self):
        raise NotImplementedError()

    @module_fails_on_exception
    def run(self):
        self.__init_module__()
        self.__run__()
        self.__quit_module__()
        output = self.output
        if "failed" not in output:
            output["failed"] = False
        self.module.exit_json(changed=self.has_changed(), **output)

    @classmethod
    def execute(cls, module=None):
        cls(module).run()