1use std::sync::Arc;
  2
  3use anyhow::{anyhow, bail, Result};
  4use assistant_tool::{ActionLog, Tool, ToolSource};
  5use gpui::{App, Entity, Task};
  6use language_model::LanguageModelRequestMessage;
  7use project::Project;
  8
  9use crate::manager::ContextServerManager;
 10use crate::types;
 11
 12pub struct ContextServerTool {
 13    server_manager: Entity<ContextServerManager>,
 14    server_id: Arc<str>,
 15    tool: types::Tool,
 16}
 17
 18impl ContextServerTool {
 19    pub fn new(
 20        server_manager: Entity<ContextServerManager>,
 21        server_id: impl Into<Arc<str>>,
 22        tool: types::Tool,
 23    ) -> Self {
 24        Self {
 25            server_manager,
 26            server_id: server_id.into(),
 27            tool,
 28        }
 29    }
 30}
 31
 32impl Tool for ContextServerTool {
 33    fn name(&self) -> String {
 34        self.tool.name.clone()
 35    }
 36
 37    fn description(&self) -> String {
 38        self.tool.description.clone().unwrap_or_default()
 39    }
 40
 41    fn source(&self) -> ToolSource {
 42        ToolSource::ContextServer {
 43            id: self.server_id.clone().into(),
 44        }
 45    }
 46
 47    fn input_schema(&self) -> serde_json::Value {
 48        match &self.tool.input_schema {
 49            serde_json::Value::Null => {
 50                serde_json::json!({ "type": "object", "properties": [] })
 51            }
 52            serde_json::Value::Object(map) if map.is_empty() => {
 53                serde_json::json!({ "type": "object", "properties": [] })
 54            }
 55            _ => self.tool.input_schema.clone(),
 56        }
 57    }
 58
 59    fn ui_text(&self, _input: &serde_json::Value) -> String {
 60        format!("Run MCP tool `{}`", self.tool.name)
 61    }
 62
 63    fn run(
 64        self: Arc<Self>,
 65        input: serde_json::Value,
 66        _messages: &[LanguageModelRequestMessage],
 67        _project: Entity<Project>,
 68        _action_log: Entity<ActionLog>,
 69        cx: &mut App,
 70    ) -> Task<Result<String>> {
 71        if let Some(server) = self.server_manager.read(cx).get_server(&self.server_id) {
 72            let tool_name = self.tool.name.clone();
 73            let server_clone = server.clone();
 74            let input_clone = input.clone();
 75
 76            cx.spawn(async move |_cx| {
 77                let Some(protocol) = server_clone.client() else {
 78                    bail!("Context server not initialized");
 79                };
 80
 81                let arguments = if let serde_json::Value::Object(map) = input_clone {
 82                    Some(map.into_iter().collect())
 83                } else {
 84                    None
 85                };
 86
 87                log::trace!(
 88                    "Running tool: {} with arguments: {:?}",
 89                    tool_name,
 90                    arguments
 91                );
 92                let response = protocol.run_tool(tool_name, arguments).await?;
 93
 94                let mut result = String::new();
 95                for content in response.content {
 96                    match content {
 97                        types::ToolResponseContent::Text { text } => {
 98                            result.push_str(&text);
 99                        }
100                        types::ToolResponseContent::Image { .. } => {
101                            log::warn!("Ignoring image content from tool response");
102                        }
103                        types::ToolResponseContent::Resource { .. } => {
104                            log::warn!("Ignoring resource content from tool response");
105                        }
106                    }
107                }
108                Ok(result)
109            })
110        } else {
111            Task::ready(Err(anyhow!("Context server not found")))
112        }
113    }
114}