"""external_systems 单元测试共享 fixture。

本文件仅放置跨多个测试文件复用的 fixture 与工厂函数。单文件独有的 helper
应保留在对应测试文件内，避免过度集中（见 testing-guidelines.md）。
"""

from __future__ import annotations

from typing import Any
from unittest.mock import AsyncMock

import pytest

from yuxi.external_systems.core.models import (
    Environment,
    ExternalSystem,
    ExternalTool,
)


# ─── 工厂函数 ─────────────────────────────────────────────────────────────


@pytest.fixture
def make_external_tool() -> type[ExternalTool]:
    """返回 ExternalTool 工厂类型，调用时按需覆盖字段。

    用法::

        tool = make_external_tool(slug="my-tool", adapter_type="http")
    """

    def _build(**overrides: Any) -> ExternalTool:
        defaults: dict[str, Any] = {
            "slug": "test-tool",
            "name": "Test Tool",
            "description": "A tool for testing",
            "adapter_type": "http",
            "auth_type": "none",
            "timeout": 30,
            "enabled": True,
        }
        defaults.update(overrides)
        return ExternalTool(**defaults)

    return _build


@pytest.fixture
def make_external_system() -> type[ExternalSystem]:
    """返回 ExternalSystem 工厂类型，调用时按需覆盖字段。"""

    def _build(**overrides: Any) -> ExternalSystem:
        defaults: dict[str, Any] = {
            "slug": "test-system",
            "name": "Test System",
            "description": "A system for testing",
            "adapter_type": "http",
            "auth_type": "none",
            "enabled": True,
        }
        defaults.update(overrides)
        return ExternalSystem(**defaults)

    return _build


@pytest.fixture
def make_environment() -> type[Environment]:
    """返回 Environment 工厂类型。"""

    def _build(**overrides: Any) -> Environment:
        defaults: dict[str, Any] = {
            "system_id": 1,
            "env_key": "default",
            "name": "Default Env",
            "is_default": False,
            "enabled": True,
        }
        defaults.update(overrides)
        return Environment(**defaults)

    return _build


# ─── Stub 端口实现 ─────────────────────────────────────────────────────────


class StubCryptoService:
    """内存版 CryptoService 桩，用于 webhook_verifier / secret_rotation_scheduler 等测试。

    - encrypt_text / decrypt_text 互为逆操作（基于 base64）。
    - mask 系列方法返回固定掩码占位。
    """

    def __init__(self) -> None:
        self._store: dict[str, str] = {}

    def encrypt_text(self, plaintext: str) -> str:
        import base64

        encoded = base64.b64encode(plaintext.encode()).decode()
        self._store[encoded] = plaintext
        return encoded

    def decrypt_text(self, ciphertext: str) -> str:
        import base64

        if ciphertext in self._store:
            return self._store[ciphertext]
        return base64.b64decode(ciphertext.encode()).decode()

    def encrypt_sensitive_fields(self, data: dict[str, Any], sensitive_keys: set[str]) -> dict[str, Any]:
        result = dict(data)
        for key in sensitive_keys:
            if key in result and isinstance(result[key], str):
                result[key] = self.encrypt_text(result[key])
        return result

    def decrypt_sensitive_fields(self, data: dict[str, Any], sensitive_keys: set[str]) -> dict[str, Any]:
        result = dict(data)
        for key in sensitive_keys:
            if key in result and isinstance(result[key], str):
                result[key] = self.decrypt_text(result[key])
        return result

    def mask_sensitive_fields(self, data: dict[str, Any], sensitive_keys: set[str]) -> dict[str, Any]:
        result = dict(data)
        for key in sensitive_keys:
            if key in result:
                result[key] = "***"
        return result

    def mask_all_string_values(self, data: dict[str, Any]) -> dict[str, Any]:
        return {k: "***" if isinstance(v, str) else v for k, v in data.items()}

    @staticmethod
    def is_sensitive_key(key: str) -> bool:
        return key.lower() in {"password", "secret", "token", "api_key"}

    @staticmethod
    def sensitive_keywords() -> list[str]:
        return ["password", "secret", "token", "api_key"]


@pytest.fixture
def stub_crypto() -> StubCryptoService:
    """提供内存版 CryptoService 桩。"""
    return StubCryptoService()


@pytest.fixture
def stub_secret_resolver() -> AsyncMock:
    """提供 SecretResolver 异步桩，resolve 返回原始引用值。"""
    resolver = AsyncMock()
    resolver.resolve = AsyncMock(side_effect=lambda ref: ref)
    return resolver