# =============================================================================
# 阶段5 自动化 - 意图识别路由单元测试
# =============================================================================
# 测试范围：intent_router.py - 意图识别 + 场景路由（Dify+RAGFlow）
# =============================================================================

import pytest
from unittest.mock import AsyncMock, patch, MagicMock

from app.services.automation.intent_router import IntentRouter


class TestIntentRouter:
    """意图识别路由器测试用例"""

    @pytest.mark.asyncio
    async def test_detect_with_dify_client_success(self, db_session):
        """测试 detect Dify 客户端可用时正常识别"""
        # Arrange
        router = IntentRouter(db_session)

        mock_client = AsyncMock()
        mock_client.detect_intent = AsyncMock(return_value={
            "scenario_key": "virus_dispose",
            "confidence": 0.95,
            "raw": {"intent": "virus_dispose"}
        })

        # Mock build_dify_client 返回 mock 客户端
        with patch("app.services.automation.intent_router.build_dify_client", return_value=mock_client):
            # Act
            result = await router.detect("电脑中毒了", "emp_001")

        # Assert
        assert result["scenario_key"] == "virus_dispose"
        assert result["confidence"] == 0.95

    @pytest.mark.asyncio
    async def test_detect_fallback_when_dify_not_configured(self, db_session):
        """测试 detect Dify 未配置时走关键词兜底"""
        # Arrange
        router = IntentRouter(db_session)

        # Mock build_dify_client 返回 None（Dify 未配置）
        with patch("app.services.automation.intent_router.build_dify_client", return_value=None):
            # Act
            result = await router.detect("帮我重置密码", "emp_001")

        # Assert - 应该走关键词兜底
        assert result["error"] == "dify_not_configured"
        assert "scenario_key" in result
        assert "confidence" in result

    @pytest.mark.asyncio
    async def test_detect_fallback_when_dify_exception(self, db_session):
        """测试 detect Dify 调用异常时走关键词兜底"""
        # Arrange
        router = IntentRouter(db_session)

        mock_client = AsyncMock()
        mock_client.detect_intent = AsyncMock(side_effect=Exception("Dify API error"))

        with patch("app.services.automation.intent_router.build_dify_client", return_value=mock_client):
            # Act
            result = await router.detect("我的电脑很卡", "emp_001")

        # Assert - 应该捕获异常并走兜底
        assert "error" in result
        assert result["error"] != "dify_not_configured"  # 是实际错误信息
        assert "scenario_key" in result

    @pytest.mark.asyncio
    async def test_fallback_intent_password_reset(self):
        """测试关键词兜底 - 密码重置场景"""
        # Arrange - 直接测试 DifyClient 的静态方法
        from app.integrations.dify import DifyClient

        # Act
        result = DifyClient._fallback_intent("我想重置密码")

        # Assert
        assert result["scenario_key"] == "password_reset"
        assert result["confidence"] == 0.6  # 兜底置信度

    @pytest.mark.asyncio
    async def test_fallback_intent_virus_dispose(self):
        """测试关键词兜底 - 病毒查杀场景"""
        from app.integrations.dify import DifyClient

        # Act
        result = DifyClient._fallback_intent("电脑中病毒了")

        # Assert
        assert result["scenario_key"] == "virus_dispose"
        assert result["confidence"] == 0.5

    @pytest.mark.asyncio
    async def test_fallback_intent_terminal_locate(self):
        """测试关键词兜底 - 终端定位场景"""
        from app.integrations.dify import DifyClient

        # Act
        result = DifyClient._fallback_intent("我的电脑在哪里")

        # Assert
        assert result["scenario_key"] == "terminal_locate"
        assert result["confidence"] == 0.5

    @pytest.mark.asyncio
    async def test_fallback_intent_software_install(self):
        """测试关键词兜底 - 软件安装场景"""
        from app.integrations.dify import DifyClient

        # Act
        result = DifyClient._fallback_intent("帮我安装一个软件")

        # Assert
        assert result["scenario_key"] == "software_install"
        assert result["confidence"] == 0.5

    @pytest.mark.asyncio
    async def test_fallback_intent_unknown(self):
        """测试关键词兜底 - 未知场景"""
        from app.integrations.dify import DifyClient

        # Act
        result = DifyClient._fallback_intent("今天天气真好")

        # Assert
        assert result["scenario_key"] is None
        assert result["confidence"] == 0.0