# Copyright 1999-2025 Alibaba Group Holding Ltd.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import enum
import importlib
import inspect
import itertools
import os
from abc import ABC, ABCMeta, abstractmethod
from typing import Any, Callable, Optional, Type, Union

from ...utils import no_default
from .field_type import (
    AbstractFieldType,
    DictType,
    FieldTypes,
    ListType,
    ReferenceType,
    TupleType,
)

_is_ci = (os.environ.get("CI") or "0").lower() in ("1", "true")


class Field(ABC):
    __slots__ = (
        "_tag",
        "_default_value",
        "_default_factory",
        "_on_serialize",
        "_on_deserialize",
        "name",  # The __name__ of member_descriptor
        "get",  # The __get__ of member_descriptor
        "set",  # The __set__ of member_descriptor
        "__delete__",  # The __delete__ of member_descriptor
    )

    _tag: str
    _default_value: Any
    _default_factory: Optional[Callable]

    def __init__(
        self,
        tag: str,
        default: Any = no_default,
        default_factory: Optional[Callable] = None,
        on_serialize: Callable[[Any], Any] = None,
        on_deserialize: Callable[[Any], Any] = None,
    ):
        if (
            default is not no_default and default_factory is not None
        ):  # pragma: no cover
            raise ValueError("default and default_factory can not be specified both")

        self._tag = tag
        self._default_value = default
        self._default_factory = default_factory
        self._on_serialize = on_serialize
        self._on_deserialize = on_deserialize

    @property
    def tag(self):
        return self._tag

    @property
    def on_serialize(self):
        return self._on_serialize

    @property
    def on_deserialize(self):
        return self._on_deserialize

    @property
    @abstractmethod
    def field_type(self) -> AbstractFieldType:
        """
        Field type.

        Returns
        -------
        field_type : AbstractFieldType
             Field type.
        """

    def __get__(self, instance, owner=None):
        try:
            return self.get(instance, owner)
        except AttributeError:
            if self._default_value is not no_default:
                val = self._default_value
                self.set(instance, val)
                return val
            elif self._default_factory is not None:
                val = self._default_factory()
                self.set(instance, val)
                return val
            else:
                raise

    def __set__(self, instance, value) -> None:
        if _is_ci:  # pragma: no branch
            from ...core import is_kernel_mode

            if not is_kernel_mode():
                field_type = self.field_type
                try:
                    to_check_value = value
                    if to_check_value is not None and self._on_serialize:
                        to_check_value = self._on_serialize(to_check_value)
                    field_type.validate(to_check_value)
                except (TypeError, ValueError) as e:
                    raise type(e)(
                        f"Failed to set `{self.name}` for {type(instance).__name__} "
                        f"when environ CI=true is set: {str(e)}"
                    )
        self.set(instance, value)


class AnyField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.any


class IdentityField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.string


class BoolField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.bool


class Int8Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.int8


class Int16Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.int16


class Int32Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.int32


class Int64Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.int64


class UInt8Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.uint8


class UInt16Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.uint16


class UInt32Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.uint32


class UInt64Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.uint64


class Float16Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.float16


class Float32Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.float32


class Float64Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.float64


class Complex64Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.complex64


class Complex128Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.complex128


class StringField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.string


class BytesField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.bytes


class KeyField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.key


class NDArrayField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.ndarray


class Datetime64Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.datetime


class Timedelta64Field(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.timedelta


class DataTypeField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.dtype


class IndexField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.index


class SeriesField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.series


class DataFrameField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.dataframe


class SliceField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.slice


class FunctionField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.function


class NamedTupleField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.namedtuple


class TZInfoField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.tzinfo


class IntervalArrayField(Field):
    __slots__ = ()

    @property
    def field_type(self) -> AbstractFieldType:
        return FieldTypes.interval_array


class EnumField(Field):
    __slots__ = ("_enum_type", "_field_type")

    def __init__(
        self,
        tag: str,
        enum_type: Type[enum.Enum],
        field_type: AbstractFieldType = None,
        default: Any = no_default,
        default_factory: Optional[Callable] = None,
        on_serialize: Callable[[Any], Any] = None,
        on_deserialize: Callable[[Any], Any] = None,
    ):
        def _on_serialize(val):
            if on_serialize is not None:
                val = on_serialize(val)
            return val.value if val is not None else None

        def _on_deserialize(val):
            val = enum_type(val) if val is not None else None
            if on_deserialize is not None:
                val = on_deserialize(val)
            return val

        super().__init__(
            tag,
            default=default,
            default_factory=default_factory,
            on_serialize=_on_serialize,
            on_deserialize=_on_deserialize,
        )
        self._enum_type = enum_type
        self._field_type = field_type or FieldTypes.any

    @property
    def field_type(self) -> Type[AbstractFieldType]:
        return self._field_type


class _CollectionField(Field, metaclass=ABCMeta):
    __slots__ = ("_field_type",)

    def __init__(
        self,
        tag: str,
        field_type: AbstractFieldType = None,
        default: Any = no_default,
        default_factory: Optional[Callable] = None,
        on_serialize: Callable[[Any], Any] = None,
        on_deserialize: Callable[[Any], Any] = None,
    ):
        super().__init__(
            tag,
            default=default,
            default_factory=default_factory,
            on_serialize=on_serialize,
            on_deserialize=on_deserialize,
        )
        if field_type is None:
            field_type = FieldTypes.any
        collection_type = self._collection_type()
        if not isinstance(field_type, collection_type):
            field_type = collection_type(field_type, ...)
        self._field_type = field_type

    @classmethod
    @abstractmethod
    def _collection_type(cls) -> AbstractFieldType:
        """
        Collection type.

        Returns
        -------
        collection_type
        """

    @property
    def field_type(self) -> Type[AbstractFieldType]:
        return self._field_type


class ListField(_CollectionField):
    __slots__ = ()

    @classmethod
    def _collection_type(cls) -> Type[AbstractFieldType]:
        return ListType


class TupleField(_CollectionField):
    __slots__ = ()

    @classmethod
    def _collection_type(cls) -> Type[AbstractFieldType]:
        return TupleType


class DictField(Field):
    __slots__ = ("_field_type",)

    def __init__(
        self,
        tag: str,
        key_type: AbstractFieldType = None,
        value_type: AbstractFieldType = None,
        default: Any = no_default,
        default_factory: Optional[Callable] = None,
        on_serialize: Callable[[Any], Any] = None,
        on_deserialize: Callable[[Any], Any] = None,
    ):
        super().__init__(
            tag,
            default=default,
            default_factory=default_factory,
            on_serialize=on_serialize,
            on_deserialize=on_deserialize,
        )
        self._field_type = DictType(key_type, value_type)

    @property
    def field_type(self) -> AbstractFieldType:
        return self._field_type


class ReferenceField(Field):
    __slots__ = "_reference_type", "_field_type"

    def __init__(
        self,
        tag: str,
        reference_type: Union[str, Type] = None,
        default: Any = no_default,
        default_factory: Optional[Callable] = None,
        on_serialize: Callable[[Any], Any] = None,
        on_deserialize: Callable[[Any], Any] = None,
    ):
        super().__init__(
            tag,
            default=default,
            default_factory=default_factory,
            on_serialize=on_serialize,
            on_deserialize=on_deserialize,
        )
        self._reference_type = reference_type

        if not isinstance(reference_type, str):
            self._field_type = ReferenceType(reference_type)
        else:
            # need to bind dynamically
            self._field_type = None

    @property
    def field_type(self) -> AbstractFieldType:
        return self._field_type

    def get_field_type(self, instance):
        if self._field_type is None:
            # bind dynamically
            if self._reference_type == "self":
                reference_type = type(instance)
            elif isinstance(self._reference_type, str) and "." in self._reference_type:
                module, name = self._reference_type.rsplit(".", 1)
                reference_type = getattr(importlib.import_module(module), name)
            else:
                module = inspect.getmodule(instance)
                reference_type = getattr(module, self._reference_type)
            self._field_type = ReferenceType(reference_type)
        return self._field_type

    def __set__(self, instance, value):
        if _is_ci:
            from ...core import is_kernel_mode

            if not is_kernel_mode():
                field_type = self.get_field_type(instance)
                try:
                    to_check_value = value
                    if to_check_value is not None and self._on_serialize:
                        to_check_value = self._on_serialize(to_check_value)
                    field_type.validate(to_check_value)
                except (TypeError, ValueError) as e:
                    raise type(e)(
                        f"Failed to set `{self.name}` for {type(instance).__name__} "
                        f"when environ CI=true is set: {e}"
                    )
        self.set(instance, value)


class OneOfField(Field):
    __slots__ = "_reference_fields"

    def __init__(
        self,
        tag: str,
        default: Any = no_default,
        on_serialize: Callable[[Any], Any] = None,
        on_deserialize: Callable[[Any], Any] = None,
        **tag_to_reference_types,
    ):
        super().__init__(
            tag,
            default=default,
            on_serialize=on_serialize,
            on_deserialize=on_deserialize,
        )
        self._reference_fields = [
            ReferenceField(t, ref_type)
            for t, ref_type in tag_to_reference_types.items()
        ]

    @property
    def reference_fields(self):
        return self._reference_fields

    @property
    def field_type(self) -> AbstractFieldType:  # pragma: no cover
        # takes no effect here, just return AnyType()
        # we will do check in __set__ instead
        return FieldTypes.any

    def __set__(self, instance, value):
        if not _is_ci:  # pragma: no cover
            return self.set(instance, value)

        for reference_field in self._reference_fields:
            try:
                to_check_value = value
                if to_check_value is not None and self._on_serialize:
                    to_check_value = self._on_serialize(to_check_value)
                reference_field.get_field_type(instance).validate(to_check_value)
                self.set(instance, value)
                return
            except TypeError:
                continue
        valid_types = list(
            itertools.chain(
                *[
                    r.get_field_type(instance).valid_types
                    for r in self._reference_fields
                ]
            )
        )
        raise TypeError(
            f"Failed to set `{self.name}` for {type(instance).__name__} "
            f"when environ CI=true is set: type of instance cannot match any "
            f"of {valid_types}, got {type(value).__name__}"
        )