"""DeepSeek Vision API 分析器测试"""

import tempfile
from pathlib import Path
from unittest.mock import MagicMock, patch

import pytest

from vitals.vision.providers.deepseek import DeepSeekVisionAnalyzer, get_deepseek_analyzer
from vitals.vision.analyzer import get_analyzer, FoodAnalyzer


class TestDeepSeekVisionAnalyzer:
    """DeepSeek Vision 分析器测试"""

    def test_init_with_api_key(self):
        """测试使用 API Key 初始化"""
        analyzer = DeepSeekVisionAnalyzer(api_key="test-key")
        assert analyzer.api_key == "test-key"
        assert analyzer.base_url == "https://api.deepseek.com/v1"

    def test_init_from_env(self):
        """测试从环境变量读取 API Key"""
        with patch.dict("os.environ", {"DEEPSEEK_API_KEY": "env-key"}):
            analyzer = DeepSeekVisionAnalyzer()
            assert analyzer.api_key == "env-key"

    def test_init_no_key(self):
        """测试没有 API Key 时的情况"""
        with patch.dict("os.environ", {}, clear=True):
            analyzer = DeepSeekVisionAnalyzer()
            assert analyzer.api_key is None

    def test_analyze_image_no_api_key(self):
        """测试没有 API Key 时分析图片应该抛出异常"""
        with patch.dict("os.environ", {}, clear=True):
            analyzer = DeepSeekVisionAnalyzer()
            with pytest.raises(ValueError, match="DEEPSEEK_API_KEY"):
                analyzer.analyze_image(Path("/fake/image.jpg"))

    def test_analyze_text_no_api_key(self):
        """测试没有 API Key 时分析文字应该抛出异常"""
        with patch.dict("os.environ", {}, clear=True):
            analyzer = DeepSeekVisionAnalyzer()
            with pytest.raises(ValueError, match="DEEPSEEK_API_KEY"):
                analyzer.analyze_text("一碗米饭")

    @patch("httpx.Client")
    def test_analyze_text_success(self, mock_client_class):
        """测试文字分析成功"""
        # 模拟 API 响应
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "choices": [
                {
                    "message": {
                        "content": "一碗米饭+两个鸡蛋"
                    }
                }
            ]
        }
        mock_response.raise_for_status = MagicMock()

        mock_client = MagicMock()
        mock_client.post.return_value = mock_response
        mock_client.__enter__ = MagicMock(return_value=mock_client)
        mock_client.__exit__ = MagicMock(return_value=False)
        mock_client_class.return_value = mock_client

        analyzer = DeepSeekVisionAnalyzer(api_key="test-key")
        result = analyzer.analyze_text("今天吃了一碗米饭和两个鸡蛋")

        assert "description" in result
        assert "total_calories" in result
        assert result["provider"] == "deepseek"
        assert result["original_input"] == "今天吃了一碗米饭和两个鸡蛋"

    @patch("httpx.Client")
    def test_analyze_image_success(self, mock_client_class):
        """测试图片分析成功"""
        # 模拟 API 响应
        mock_response = MagicMock()
        mock_response.json.return_value = {
            "choices": [
                {
                    "message": {
                        "content": "米饭+红烧肉+西兰花"
                    }
                }
            ]
        }
        mock_response.raise_for_status = MagicMock()

        mock_client = MagicMock()
        mock_client.post.return_value = mock_response
        mock_client.__enter__ = MagicMock(return_value=mock_client)
        mock_client.__exit__ = MagicMock(return_value=False)
        mock_client_class.return_value = mock_client

        # 创建临时图片文件
        with tempfile.NamedTemporaryFile(suffix=".jpg", delete=False) as f:
            f.write(b"fake image data")
            tmp_path = Path(f.name)

        try:
            analyzer = DeepSeekVisionAnalyzer(api_key="test-key")
            result = analyzer.analyze_image(tmp_path)

            assert "description" in result
            assert "total_calories" in result
            assert result["provider"] == "deepseek"
        finally:
            tmp_path.unlink(missing_ok=True)

    def test_encode_image(self):
        """测试图片编码"""
        with tempfile.NamedTemporaryFile(suffix=".jpg", delete=False) as f:
            f.write(b"test data")
            tmp_path = Path(f.name)

        try:
            analyzer = DeepSeekVisionAnalyzer(api_key="test-key")
            encoded = analyzer._encode_image(tmp_path)
            assert encoded == "dGVzdCBkYXRh"  # base64 of "test data"
        finally:
            tmp_path.unlink(missing_ok=True)

    def test_get_media_type(self):
        """测试 MIME 类型获取"""
        analyzer = DeepSeekVisionAnalyzer(api_key="test-key")

        assert analyzer._get_media_type(Path("test.jpg")) == "image/jpeg"
        assert analyzer._get_media_type(Path("test.jpeg")) == "image/jpeg"
        assert analyzer._get_media_type(Path("test.png")) == "image/png"
        assert analyzer._get_media_type(Path("test.gif")) == "image/gif"
        assert analyzer._get_media_type(Path("test.webp")) == "image/webp"
        assert analyzer._get_media_type(Path("test.unknown")) == "image/jpeg"


class TestGetDeepSeekAnalyzer:
    """测试 get_deepseek_analyzer 工厂函数"""

    def test_get_analyzer(self):
        """测试获取分析器"""
        analyzer = get_deepseek_analyzer(api_key="test-key")
        assert isinstance(analyzer, DeepSeekVisionAnalyzer)
        assert analyzer.api_key == "test-key"


class TestGetAnalyzerFactory:
    """测试 analyzer.py 中的 get_analyzer 工厂函数"""

    def test_get_deepseek_analyzer(self):
        """测试获取 DeepSeek 分析器"""
        with patch.dict("os.environ", {"DEEPSEEK_API_KEY": "test-key"}):
            analyzer = get_analyzer(provider="deepseek")
            assert isinstance(analyzer, DeepSeekVisionAnalyzer)

    def test_get_claude_analyzer(self):
        """测试获取 Claude 分析器"""
        from vitals.vision.analyzer import ClaudeFoodAnalyzer
        analyzer = get_analyzer(provider="claude", api_key="test-key")
        assert isinstance(analyzer, ClaudeFoodAnalyzer)

    def test_get_local_analyzer(self):
        """测试获取本地分析器"""
        from vitals.vision.analyzer import LocalFoodAnalyzer
        analyzer = get_analyzer(provider="local")
        assert isinstance(analyzer, LocalFoodAnalyzer)

    def test_backward_compatibility(self):
        """测试向后兼容 use_claude 参数"""
        from vitals.vision.analyzer import ClaudeFoodAnalyzer
        analyzer = get_analyzer(use_claude=True, api_key="test-key")
        assert isinstance(analyzer, ClaudeFoodAnalyzer)

    def test_default_provider(self):
        """测试默认使用 DeepSeek"""
        with patch.dict("os.environ", {"DEEPSEEK_API_KEY": "test-key"}):
            analyzer = get_analyzer()
            assert isinstance(analyzer, DeepSeekVisionAnalyzer)


class TestLocalFoodAnalyzer:
    """测试本地分析器"""

    def test_analyze_returns_empty(self):
        """测试本地分析器返回空结果"""
        from vitals.vision.analyzer import LocalFoodAnalyzer

        analyzer = LocalFoodAnalyzer()
        result = analyzer.analyze(Path("/fake/image.jpg"))

        assert result["description"] == ""
        assert result["total_calories"] == 0
        assert "note" in result