# P2P Network Communication - Data Models Tests
"""
测试数据模型的基本功能
"""

import pytest
from datetime import datetime
from shared.models import (
    MessageType, UserStatus, TransferStatus, ConnectionMode, NetworkQuality,
    Message, UserInfo, ChatMessage, FileChunk, TransferProgress, FileTransferRecord, PeerInfo
)


class TestMessageType:
    """测试消息类型枚举"""
    
    def test_message_type_values(self):
        """测试消息类型枚举值"""
        assert MessageType.TEXT.value == "text"
        assert MessageType.FILE_REQUEST.value == "file_request"
        assert MessageType.HEARTBEAT.value == "heartbeat"
        assert MessageType.VOICE_DATA.value == "voice_data"


class TestUserStatus:
    """测试用户状态枚举"""
    
    def test_user_status_values(self):
        """测试用户状态枚举值"""
        assert UserStatus.ONLINE.value == "online"
        assert UserStatus.OFFLINE.value == "offline"
        assert UserStatus.BUSY.value == "busy"
        assert UserStatus.AWAY.value == "away"


class TestTransferStatus:
    """测试传输状态枚举"""
    
    def test_transfer_status_values(self):
        """测试传输状态枚举值"""
        assert TransferStatus.PENDING.value == "pending"
        assert TransferStatus.IN_PROGRESS.value == "in_progress"
        assert TransferStatus.COMPLETED.value == "completed"
        assert TransferStatus.FAILED.value == "failed"
        assert TransferStatus.CANCELLED.value == "cancelled"


class TestMessage:
    """测试Message数据类"""
    
    def test_message_creation(self):
        """测试消息创建"""
        msg = Message(
            msg_type=MessageType.TEXT,
            sender_id="user1",
            receiver_id="user2",
            timestamp=1234567890.0,
            payload=b"Hello, World!"
        )
        
        assert msg.msg_type == MessageType.TEXT
        assert msg.sender_id == "user1"
        assert msg.receiver_id == "user2"
        assert msg.timestamp == 1234567890.0
        assert msg.payload == b"Hello, World!"
        assert msg.checksum != ""
        assert msg.message_id != ""
    
    def test_message_checksum_verification(self):
        """测试消息校验和验证"""
        msg = Message(
            msg_type=MessageType.TEXT,
            sender_id="user1",
            receiver_id="user2",
            timestamp=1234567890.0,
            payload=b"Test message"
        )
        
        assert msg.verify_checksum() is True
    
    def test_message_to_dict_and_from_dict(self):
        """测试消息字典转换"""
        original = Message(
            msg_type=MessageType.TEXT,
            sender_id="user1",
            receiver_id="user2",
            timestamp=1234567890.0,
            payload=b"Test"
        )
        
        msg_dict = original.to_dict()
        restored = Message.from_dict(msg_dict)
        
        assert restored.msg_type == original.msg_type
        assert restored.sender_id == original.sender_id
        assert restored.receiver_id == original.receiver_id
        assert restored.timestamp == original.timestamp
        assert restored.payload == original.payload
        assert restored.checksum == original.checksum
        assert restored.message_id == original.message_id
    
    def test_message_serialize_deserialize(self):
        """测试消息序列化和反序列化"""
        original = Message(
            msg_type=MessageType.FILE_REQUEST,
            sender_id="sender",
            receiver_id="receiver",
            timestamp=9876543210.0,
            payload=b"file_data_here"
        )
        
        serialized = original.serialize()
        restored = Message.deserialize(serialized)
        
        assert restored.msg_type == original.msg_type
        assert restored.sender_id == original.sender_id
        assert restored.receiver_id == original.receiver_id
        assert restored.payload == original.payload


class TestUserInfo:
    """测试UserInfo数据类"""
    
    def test_user_info_creation(self):
        """测试用户信息创建"""
        user = UserInfo(
            user_id="uid123",
            username="testuser",
            display_name="Test User"
        )
        
        assert user.user_id == "uid123"
        assert user.username == "testuser"
        assert user.display_name == "Test User"
        assert user.status == UserStatus.OFFLINE
    
    def test_user_info_serialize_deserialize(self):
        """测试用户信息序列化和反序列化"""
        original = UserInfo(
            user_id="uid456",
            username="user456",
            display_name="User 456",
            status=UserStatus.ONLINE,
            ip_address="192.168.1.100",
            port=8888
        )
        
        serialized = original.serialize()
        restored = UserInfo.deserialize(serialized)
        
        assert restored.user_id == original.user_id
        assert restored.username == original.username
        assert restored.status == original.status
        assert restored.ip_address == original.ip_address
        assert restored.port == original.port


class TestChatMessage:
    """测试ChatMessage数据类"""
    
    def test_chat_message_creation(self):
        """测试聊天消息创建"""
        chat_msg = ChatMessage(
            message_id="msg001",
            sender_id="user1",
            receiver_id="user2",
            content_type=MessageType.TEXT,
            content="Hello!"
        )
        
        assert chat_msg.message_id == "msg001"
        assert chat_msg.content == "Hello!"
        assert chat_msg.is_read is False
        assert chat_msg.is_sent is False
    
    def test_chat_message_serialize_deserialize(self):
        """测试聊天消息序列化和反序列化"""
        original = ChatMessage(
            message_id="msg002",
            sender_id="sender",
            receiver_id="receiver",
            content_type=MessageType.IMAGE,
            content="/path/to/image.png",
            is_read=True,
            is_sent=True
        )
        
        serialized = original.serialize()
        restored = ChatMessage.deserialize(serialized)
        
        assert restored.message_id == original.message_id
        assert restored.content_type == original.content_type
        assert restored.content == original.content
        assert restored.is_read == original.is_read
        assert restored.is_sent == original.is_sent


class TestFileChunk:
    """测试FileChunk数据类"""
    
    def test_file_chunk_creation(self):
        """测试文件块创建"""
        chunk = FileChunk(
            file_id="file001",
            chunk_index=0,
            total_chunks=10,
            data=b"chunk_data_here"
        )
        
        assert chunk.file_id == "file001"
        assert chunk.chunk_index == 0
        assert chunk.total_chunks == 10
        assert chunk.checksum != ""
    
    def test_file_chunk_checksum_verification(self):
        """测试文件块校验和验证"""
        chunk = FileChunk(
            file_id="file002",
            chunk_index=1,
            total_chunks=5,
            data=b"test_chunk_data"
        )
        
        assert chunk.verify_checksum() is True


class TestTransferProgress:
    """测试TransferProgress数据类"""
    
    def test_transfer_progress_percent(self):
        """测试传输进度百分比计算"""
        progress = TransferProgress(
            file_id="file001",
            file_name="test.txt",
            total_size=1000,
            transferred_size=500
        )
        
        assert progress.progress_percent == 50.0
    
    def test_transfer_progress_zero_total(self):
        """测试总大小为0时的进度计算"""
        progress = TransferProgress(
            file_id="file002",
            file_name="empty.txt",
            total_size=0,
            transferred_size=0
        )
        
        assert progress.progress_percent == 0.0