"""
描述:
- ConnectLike 协议的单元测试。
- 测试协议的结构、实现和运行时类型检查。
"""

from __future__ import annotations

from typing import Any

import pytest

from xfintech.connect.common.connect import ConnectLike
from xfintech.connect.common.connectref import ConnectRef

# =============================================================================
# Protocol Structure Tests
# =============================================================================


def test_connectlike_is_protocol():
    """测试 ConnectLike 是一个协议类"""
    from typing import Protocol

    assert issubclass(ConnectLike.__class__, type(Protocol))


def test_connectlike_is_runtime_checkable():
    """测试 ConnectLike 是运行时可检查的"""
    # Check for protocol marker attributes that exist in Python 3.8+
    assert hasattr(ConnectLike, "_is_protocol") or hasattr(ConnectLike, "__protocol_attrs__")


def test_connectlike_has_get_object_method():
    """测试 ConnectLike 定义了 get_object 方法"""
    assert hasattr(ConnectLike, "get_object")


def test_connectlike_has_put_object_method():
    """测试 ConnectLike 定义了 put_object 方法"""
    assert hasattr(ConnectLike, "put_object")


def test_connectlike_method_signatures():
    """测试方法签名"""
    import inspect

    # Check get_object signature
    get_sig = inspect.signature(ConnectLike.get_object)
    get_params = list(get_sig.parameters.keys())
    assert "self" in get_params
    assert "location" in get_params
    assert "kwargs" in get_params

    # Check put_object signature
    put_sig = inspect.signature(ConnectLike.put_object)
    put_params = list(put_sig.parameters.keys())
    assert "self" in put_params
    assert "data" in put_params
    assert "location" in put_params
    assert "kwargs" in put_params


# =============================================================================
# Implementation Tests - Valid Implementations
# =============================================================================


def test_valid_implementation_basic():
    """测试基本的有效实现"""

    class ValidConnect(ConnectLike):
        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return b"data"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location)

    instance = ValidConnect()
    assert isinstance(instance, ConnectLike)


def test_valid_implementation_can_call_get_object():
    """测试有效实现可以调用 get_object"""

    class ValidConnect(ConnectLike):
        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return b"test_data"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location)

    connect = ValidConnect()
    result = connect.get_object("test_location")
    assert result == b"test_data"


def test_valid_implementation_can_call_put_object():
    """测试有效实现可以调用 put_object"""

    class ValidConnect:
        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return b"data"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location, kind="test")

    connect = ValidConnect()
    result = connect.put_object(b"test_data", "test_location")
    assert isinstance(result, ConnectRef)
    assert result.location == "test_location"
    assert result.kind == "test"


def test_valid_implementation_with_kwargs():
    """测试有效实现支持 kwargs"""

    class ValidConnect:
        def get_object(self, location: str, **kwargs: Any) -> bytes:
            encoding = kwargs.get("encoding", "utf-8")
            return f"data:{encoding}".encode()

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            kind = kwargs.get("kind", "default")
            return ConnectRef(location=location, kind=kind)

    connect = ValidConnect()

    # Test get_object with kwargs
    result = connect.get_object("location", encoding="ascii")
    assert result == b"data:ascii"

    # Test put_object with kwargs
    ref = connect.put_object(b"data", "location", kind="custom")
    assert ref.kind == "custom"


def test_valid_implementation_with_state():
    """测试包含状态的有效实现"""

    class StatefulConnect:
        def __init__(self):
            self.kind = "stateful"
            self.call_count = 0

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            self.call_count += 1
            return b"data"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            self.call_count += 1
            return ConnectRef(location=location)

    connect = StatefulConnect()
    assert isinstance(connect, ConnectLike)
    assert connect.call_count == 0

    connect.get_object("loc")
    assert connect.call_count == 1

    connect.put_object(b"data", "loc")
    assert connect.call_count == 2


def test_valid_implementation_with_extra_methods():
    """测试包含额外方法的有效实现"""

    class RichConnect:
        def __init__(self):
            self.kind = "rich"

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return b"data"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location)

        def delete_object(self, location: str) -> None:
            pass

        def list_objects(self) -> list:
            return []

    connect = RichConnect()
    assert isinstance(connect, ConnectLike)


# =============================================================================
# Implementation Tests - Invalid Implementations
# =============================================================================


def test_invalid_implementation_missing_get_object():
    """测试缺少 get_object 方法的实现"""

    class InvalidConnect:
        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location)

    instance = InvalidConnect()
    assert not isinstance(instance, ConnectLike)


def test_invalid_implementation_missing_put_object():
    """测试缺少 put_object 方法的实现"""

    class InvalidConnect:
        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return b"data"

    instance = InvalidConnect()
    assert not isinstance(instance, ConnectLike)


def test_invalid_implementation_missing_both():
    """测试缺少所有方法的实现"""

    class InvalidConnect:
        pass

    instance = InvalidConnect()
    assert not isinstance(instance, ConnectLike)


def test_invalid_implementation_wrong_method_names():
    """测试方法名错误的实现"""

    class InvalidConnect:
        def get(self, location: str, **kwargs: Any) -> bytes:
            return b"data"

        def put(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location)

    instance = InvalidConnect()
    assert not isinstance(instance, ConnectLike)


# =============================================================================
# Type Checking Tests
# =============================================================================


def test_isinstance_with_valid_class():
    """测试 isinstance 检查有效类"""

    class MyConnect:
        def __init__(self):
            self.kind = "test"

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return b""

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location)

    assert isinstance(MyConnect(), ConnectLike)


def test_isinstance_with_invalid_class():
    """测试 isinstance 检查无效类"""

    class NotConnect:
        def __init__(self):
            self.kind = "test"

        def other_method(self):
            pass

    assert not isinstance(NotConnect(), ConnectLike)


def test_isinstance_with_builtin_types():
    """测试 isinstance 检查内置类型"""
    assert not isinstance(str(), ConnectLike)
    assert not isinstance(int(), ConnectLike)
    assert not isinstance(list(), ConnectLike)
    assert not isinstance(dict(), ConnectLike)


def test_isinstance_with_none():
    """测试 isinstance 检查 None"""
    assert not isinstance(None, ConnectLike)


# =============================================================================
# Inheritance Tests
# =============================================================================


def test_can_inherit_from_protocol():
    """测试可以继承协议"""

    class BaseConnect(ConnectLike):
        def __init__(self):
            self.kind = "test"

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return b"base"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location)

    instance = BaseConnect()
    assert isinstance(instance, ConnectLike)


def test_inherited_class_can_override():
    """测试继承类可以重写方法"""

    class BaseConnect(ConnectLike):
        def __init__(self):
            self.kind = "test"

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return b"base"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location, kind="base")

    class DerivedConnect(BaseConnect):
        def __init__(self):
            self.kind = "test"

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return b"derived"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location, kind="derived")

    derived = DerivedConnect()
    assert isinstance(derived, ConnectLike)
    assert derived.get_object("loc") == b"derived"
    assert derived.put_object(b"data", "loc").kind == "derived"


# =============================================================================
# Real-World Usage Tests
# =============================================================================


def test_s3_like_implementation():
    """测试类似 S3 的实现"""

    class S3MockConnect:
        def __init__(self):
            self.kind = "test"
            self.storage = {}

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            if location not in self.storage:
                raise KeyError(f"Object not found: {location}")
            return self.storage[location]

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            self.storage[location] = data
            return ConnectRef(location=location, kind="s3")

    connect = S3MockConnect()
    assert isinstance(connect, ConnectLike)

    # Put and get
    ref = connect.put_object(b"test_data", "s3://bucket/key")
    assert ref.location == "s3://bucket/key"

    data = connect.get_object("s3://bucket/key")
    assert data == b"test_data"


def test_filesystem_like_implementation():
    """测试类似文件系统的实现"""

    class FileSystemConnect:
        def __init__(self):
            self.kind = "test"
            self.files = {}

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return self.files.get(location, b"")

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            self.files[location] = data
            return ConnectRef(location=location, kind="filesystem")

    connect = FileSystemConnect()
    assert isinstance(connect, ConnectLike)

    # Test operations
    ref = connect.put_object(b"file_content", "/path/to/file")
    assert ref.kind == "filesystem"

    content = connect.get_object("/path/to/file")
    assert content == b"file_content"


def test_error_handling_implementation():
    """测试包含错误处理的实现"""

    class ErrorHandlingConnect:
        def __init__(self):
            self.kind = "test"

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            if not location:
                raise ValueError("Location cannot be empty")
            return b"data"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            if not data:
                raise ValueError("Data cannot be empty")
            if not location:
                raise ValueError("Location cannot be empty")
            return ConnectRef(location=location)

    connect = ErrorHandlingConnect()
    assert isinstance(connect, ConnectLike)

    # Test error cases
    with pytest.raises(ValueError, match="Location cannot be empty"):
        connect.get_object("")

    with pytest.raises(ValueError, match="Data cannot be empty"):
        connect.put_object(b"", "location")


def test_async_style_implementation():
    """测试异步风格的实现（同步模拟）"""

    class AsyncStyleConnect:
        def __init__(self):
            self.kind = "test"
            self.pending = []

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            # Simulate async operation
            self.pending.append(("get", location))
            return b"async_data"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            # Simulate async operation
            self.pending.append(("put", location))
            return ConnectRef(location=location, kind="async")

    connect = AsyncStyleConnect()
    assert isinstance(connect, ConnectLike)

    connect.get_object("loc1")
    connect.put_object(b"data", "loc2")

    assert len(connect.pending) == 2
    assert connect.pending[0] == ("get", "loc1")
    assert connect.pending[1] == ("put", "loc2")


# =============================================================================
# Protocol Attribute Tests
# =============================================================================


def test_protocol_has_correct_attributes():
    """测试协议具有正确的属性"""
    # Check protocol defines required methods
    assert hasattr(ConnectLike, "get_object")
    assert hasattr(ConnectLike, "put_object")
    # Verify it's marked as a protocol
    assert hasattr(ConnectLike, "_is_protocol") or hasattr(ConnectLike, "__protocol_attrs__")


def test_protocol_module():
    """测试协议所属模块"""
    assert ConnectLike.__module__ == "xfintech.connect.common.connect"


def test_protocol_name():
    """测试协议名称"""
    assert ConnectLike.__name__ == "ConnectLike"


def test_protocol_has_docstring():
    """测试协议有文档字符串"""
    assert ConnectLike.__doc__ is not None
    assert len(ConnectLike.__doc__) > 0


# =============================================================================
# Edge Cases
# =============================================================================


def test_implementation_with_optional_parameters():
    """测试带可选参数的实现"""

    class OptionalConnect:
        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return b"data"

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(
                location=location,
                kind=kwargs.get("kind"),
            )

    connect = OptionalConnect()
    assert isinstance(connect, ConnectLike)

    ref = connect.put_object(b"data", "loc", kind="custom")
    assert ref.kind == "custom"


def test_implementation_with_default_values():
    """测试带默认值的实现"""

    class DefaultConnect:
        def get_object(self, location: str = "default", **kwargs: Any) -> bytes:
            return location.encode()

        def put_object(self, data: bytes = b"", location: str = "default", **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location)

    connect = DefaultConnect()
    assert isinstance(connect, ConnectLike)


def test_multiple_instances():
    """测试多个实例"""

    class SimpleConnect:
        def __init__(self, name: str):
            self.name = name

        def get_object(self, location: str, **kwargs: Any) -> bytes:
            return self.name.encode()

        def put_object(self, data: bytes, location: str, **kwargs: Any) -> ConnectRef:
            return ConnectRef(location=location, kind=self.name)

    connect1 = SimpleConnect("first")
    connect2 = SimpleConnect("second")

    assert isinstance(connect1, ConnectLike)
    assert isinstance(connect2, ConnectLike)

    assert connect1.get_object("loc") == b"first"
    assert connect2.get_object("loc") == b"second"
