use rmcp::model::Tool;
use rmcp::ErrorData;
use serde_json::{json, Map, Value};
use crate::server::tool_trait::{McpTool, ToolContext, ToolOutput};
use crate::tool_defs::tool_def;
pub struct CtxExpandTool;
impl McpTool for CtxExpandTool {
fn name(&self) -> &'static str {
"ctx_expand"
}
fn tool_def(&self) -> Tool {
tool_def(
"ctx_expand",
"Retrieve archived tool output (zero-loss). Large outputs are auto-archived; use this to retrieve full details. Actions: retrieve (default), list.",
json!({
"type": "object",
"properties": {
"id": { "type": "string", "description": "Archive ID from the [Archived: ...] hint" },
"action": { "type": "string", "description": "retrieve (default) or list" },
"start_line": { "type": "integer", "description": "Start line for range retrieval" },
"end_line": { "type": "integer", "description": "End line for range retrieval" },
"search": { "type": "string", "description": "Search pattern to filter archived output" },
"session_id": { "type": "string", "description": "Filter list by session ID" }
}
}),
)
}
fn handle(
&self,
args: &Map<String, Value>,
_ctx: &ToolContext,
) -> Result<ToolOutput, ErrorData> {
let args_val = Value::Object(args.clone());
let result = crate::tools::ctx_expand::handle(&args_val);
Ok(ToolOutput::simple(result))
}
}