kreuzberg 4.4.2

//! MCP request parameter types.
//!
//! This module defines the parameter structures for all MCP tool calls.

use rmcp::schemars;

/// Request parameters for file extraction.
#[derive(Debug, serde::Deserialize, serde::Serialize, schemars::JsonSchema)]
pub struct ExtractFileParams {
    /// Path to the file to extract
    pub path: String,
    /// Optional MIME type hint (auto-detected if not provided)
    #[serde(skip_serializing_if = "Option::is_none")]
    pub mime_type: Option<String>,
    /// Extraction configuration (JSON object)
    #[serde(skip_serializing_if = "Option::is_none")]
    pub config: Option<serde_json::Value>,
}

/// Request parameters for bytes extraction.
#[derive(Debug, serde::Deserialize, serde::Serialize, schemars::JsonSchema)]
pub struct ExtractBytesParams {
    /// Base64-encoded file content
    pub data: String,
    /// Optional MIME type hint (auto-detected if not provided)
    #[serde(skip_serializing_if = "Option::is_none")]
    pub mime_type: Option<String>,
    /// Extraction configuration (JSON object)
    #[serde(skip_serializing_if = "Option::is_none")]
    pub config: Option<serde_json::Value>,
}

/// Request parameters for batch file extraction.
#[derive(Debug, serde::Deserialize, serde::Serialize, schemars::JsonSchema)]
pub struct BatchExtractFilesParams {
    /// Paths to files to extract
    pub paths: Vec<String>,
    /// Extraction configuration (JSON object)
    #[serde(skip_serializing_if = "Option::is_none")]
    pub config: Option<serde_json::Value>,
}

/// Request parameters for MIME type detection.
#[derive(Debug, serde::Deserialize, serde::Serialize, schemars::JsonSchema)]
pub struct DetectMimeTypeParams {
    /// Path to the file
    pub path: String,
    /// Use content-based detection (default: true)
    #[serde(default = "default_use_content")]
    pub use_content: bool,
}

fn default_use_content() -> bool {
    true
}

/// Empty parameters for tools that take no arguments.
///
/// This generates `{"type": "object", "properties": {}}` which is required by
/// the MCP specification, unlike `()` which generates `{"const": null}`.
#[derive(Debug, serde::Deserialize, serde::Serialize, schemars::JsonSchema)]
pub struct EmptyParams {}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_extract_file_params_defaults() {
        let json = r#"{"path": "/test.pdf"}"#;
        let params: ExtractFileParams = serde_json::from_str(json).unwrap();

        assert_eq!(params.path, "/test.pdf");
        assert_eq!(params.mime_type, None);
        assert_eq!(params.config, None);
    }

    #[test]
    fn test_extract_bytes_params_defaults() {
        let json = r#"{"data": "SGVsbG8="}"#;
        let params: ExtractBytesParams = serde_json::from_str(json).unwrap();

        assert_eq!(params.data, "SGVsbG8=");
        assert_eq!(params.mime_type, None);
        assert_eq!(params.config, None);
    }

    #[test]
    fn test_batch_extract_files_params_defaults() {
        let json = r#"{"paths": ["/a.pdf", "/b.pdf"]}"#;
        let params: BatchExtractFilesParams = serde_json::from_str(json).unwrap();

        assert_eq!(params.paths.len(), 2);
        assert_eq!(params.config, None);
    }

    #[test]
    fn test_detect_mime_type_params_defaults() {
        let json = r#"{"path": "/test.pdf"}"#;
        let params: DetectMimeTypeParams = serde_json::from_str(json).unwrap();

        assert_eq!(params.path, "/test.pdf");
        assert!(params.use_content);
    }

    #[test]
    fn test_detect_mime_type_params_use_content_false() {
        let json = r#"{"path": "/test.pdf", "use_content": false}"#;
        let params: DetectMimeTypeParams = serde_json::from_str(json).unwrap();

        assert!(!params.use_content);
    }

    #[test]
    fn test_extract_file_params_with_config() {
        let json = r#"{"path": "/test.pdf", "config": {"use_cache": false}}"#;
        let params: ExtractFileParams = serde_json::from_str(json).unwrap();

        assert_eq!(params.path, "/test.pdf");
        assert!(params.config.is_some());
    }

    #[test]
    fn test_extract_file_params_serialization() {
        let params = ExtractFileParams {
            path: "/test.pdf".to_string(),
            mime_type: Some("application/pdf".to_string()),
            config: Some(serde_json::json!({"use_cache": false})),
        };

        let json = serde_json::to_string(&params).unwrap();
        let deserialized: ExtractFileParams = serde_json::from_str(&json).unwrap();

        assert_eq!(params.path, deserialized.path);
        assert_eq!(params.mime_type, deserialized.mime_type);
        assert_eq!(params.config, deserialized.config);
    }

    #[test]
    fn test_extract_bytes_params_serialization() {
        let params = ExtractBytesParams {
            data: "SGVsbG8=".to_string(),
            mime_type: None,
            config: None,
        };

        let json = serde_json::to_string(&params).unwrap();
        let deserialized: ExtractBytesParams = serde_json::from_str(&json).unwrap();

        assert_eq!(params.data, deserialized.data);
    }

    #[test]
    fn test_batch_extract_params_serialization() {
        let params = BatchExtractFilesParams {
            paths: vec!["/a.pdf".to_string(), "/b.pdf".to_string()],
            config: Some(serde_json::json!({"use_cache": true})),
        };

        let json = serde_json::to_string(&params).unwrap();
        let deserialized: BatchExtractFilesParams = serde_json::from_str(&json).unwrap();

        assert_eq!(params.paths, deserialized.paths);
        assert_eq!(params.config, deserialized.config);
    }

    #[test]
    fn test_detect_mime_type_params_serialization() {
        let params = DetectMimeTypeParams {
            path: "/test.pdf".to_string(),
            use_content: false,
        };

        let json = serde_json::to_string(&params).unwrap();
        let deserialized: DetectMimeTypeParams = serde_json::from_str(&json).unwrap();

        assert_eq!(params.path, deserialized.path);
        assert_eq!(params.use_content, deserialized.use_content);
    }

    #[test]
    fn test_empty_params_schema_has_type_object() {
        let schema = schemars::schema_for!(EmptyParams);
        let json = serde_json::to_value(&schema).unwrap();
        assert_eq!(json["type"], "object");
    }

    #[test]
    fn test_empty_params_deserializes_from_empty_object() {
        let params: EmptyParams = serde_json::from_str("{}").unwrap();
        let _ = params;
    }
}