use picobot::protocol::{WsInbound, WsOutbound};
use picobot::providers::{ChatCompletionRequest, Message};

/// Test that message with special characters is properly escaped
#[test]
fn test_message_special_characters() {
    let msg = Message::user("Hello \"world\"\nNew line\tTab");

    let json = serde_json::to_string(&msg).unwrap();
    let deserialized: Message = serde_json::from_str(&json).unwrap();

    assert_eq!(deserialized.role, "user");
    assert_eq!(deserialized.content.len(), 1);
    let encoded = serde_json::to_string(&deserialized.content).unwrap();
    assert!(encoded.contains("Hello \\\"world\\\"\\nNew line\\tTab"));
}

/// Test that multi-line system prompt is preserved
#[test]
fn test_multiline_system_prompt() {
    let messages = vec![
        Message::system(
            "You are a helpful assistant.\n\nFollow these rules:\n1. Be kind\n2. Be accurate",
        ),
        Message::user("Hi"),
    ];

    let json = serde_json::to_string(&messages[0]).unwrap();
    assert!(json.contains("helpful assistant"));
    assert!(json.contains("rules"));
    assert!(json.contains("1. Be kind"));
}

/// Test ChatCompletionRequest serialization (without model field)
#[test]
fn test_chat_request_serialization() {
    let request = ChatCompletionRequest {
        messages: vec![Message::system("You are helpful"), Message::user("Hello")],
        temperature: Some(0.7),
        max_tokens: Some(100),
        tools: None,
    };

    let json = serde_json::to_string(&request).unwrap();

    // Verify structure
    assert!(json.contains(r#""role":"system""#));
    assert!(json.contains(r#""role":"user""#));
    assert!(json.contains("You are helpful"));
    assert!(json.contains("Hello"));
    assert!(json.contains(r#""temperature":0.7"#));
    assert!(json.contains(r#""max_tokens":100"#));
}

#[test]
fn test_command_inbound_serialization() {
    // Command is now sent as payload in WsInbound::Command
    let command_json = r#"{"type":"create_session","title":"demo"}"#;
    let msg = WsInbound::Command {
        payload: command_json.to_string(),
    };

    let json = serde_json::to_string(&msg).unwrap();
    assert!(json.contains(r#""type":"command""#));
    assert!(json.contains(r#""payload":""#));
    assert!(json.contains(r#"create_session"#));
}

#[test]
fn test_message_inbound_serialization() {
    let msg = WsInbound::Message {
        content: "Hello world".to_string(),
        channel: None,
        chat_id: Some("session-1".to_string()),
        sender_id: Some("user-1".to_string()),
    };

    let json = serde_json::to_string(&msg).unwrap();
    assert!(json.contains(r#""type":"message""#));
    assert!(json.contains(r#""content":"Hello world""#));
    assert!(json.contains(r#""chat_id":"session-1""#));

    let decoded: WsInbound = serde_json::from_str(&json).unwrap();
    match decoded {
        WsInbound::Message { content, chat_id, .. } => {
            assert_eq!(content, "Hello world");
            assert_eq!(chat_id.as_deref(), Some("session-1"));
        }
        other => panic!("unexpected decoded variant: {:?}", other),
    }
}

#[test]
fn test_session_created_outbound_serialization() {
    let msg = WsOutbound::SessionCreated {
        session_id: "session-1".to_string(),
        title: "demo".to_string(),
    };

    let json = serde_json::to_string(&msg).unwrap();
    assert!(json.contains(r#""type":"session_created""#));
    assert!(json.contains(r#""session_id":"session-1""#));
    assert!(json.contains(r#""title":"demo""#));

    let decoded: WsOutbound = serde_json::from_str(&json).unwrap();
    match decoded {
        WsOutbound::SessionCreated { session_id, title } => {
            assert_eq!(session_id, "session-1");
            assert_eq!(title, "demo");
        }
        other => panic!("unexpected decoded variant: {:?}", other),
    }
}

#[test]
fn test_tool_call_outbound_serialization() {
    let msg = WsOutbound::ToolCall {
        id: "msg-1".to_string(),
        tool_call_id: "call-1".to_string(),
        tool_name: "calculator".to_string(),
        arguments: serde_json::json!({"expression": "1 + 1"}),
        content: "调用工具: calculator".to_string(),
        role: "assistant".to_string(),
    };

    let json = serde_json::to_string(&msg).unwrap();
    assert!(json.contains(r#""type":"tool_call""#));
    assert!(json.contains(r#""tool_name":"calculator""#));
    assert!(json.contains(r#""expression":"1 + 1""#));

    let decoded: WsOutbound = serde_json::from_str(&json).unwrap();
    match decoded {
        WsOutbound::ToolCall {
            tool_call_id,
            tool_name,
            arguments,
            ..
        } => {
            assert_eq!(tool_call_id, "call-1");
            assert_eq!(tool_name, "calculator");
            assert_eq!(arguments["expression"], "1 + 1");
        }
        other => panic!("unexpected decoded variant: {:?}", other),
    }
}

#[test]
fn test_tool_result_outbound_serialization() {
    let msg = WsOutbound::ToolResult {
        id: "msg-2".to_string(),
        tool_call_id: "call-1".to_string(),
        tool_name: "calculator".to_string(),
        content: "工具结果: calculator\n\n2".to_string(),
        role: "tool".to_string(),
    };

    let json = serde_json::to_string(&msg).unwrap();
    assert!(json.contains(r#""type":"tool_result""#));
    assert!(json.contains(r#""tool_name":"calculator""#));

    let decoded: WsOutbound = serde_json::from_str(&json).unwrap();
    match decoded {
        WsOutbound::ToolResult {
            tool_call_id,
            tool_name,
            content,
            ..
        } => {
            assert_eq!(tool_call_id, "call-1");
            assert_eq!(tool_name, "calculator");
            assert!(content.contains('2'));
        }
        other => panic!("unexpected decoded variant: {:?}", other),
    }
}