sgr-agent-tools 0.4.2

//! TreeTool — show directory tree structure.

use std::sync::Arc;

use schemars::JsonSchema;
use serde::Deserialize;
use serde_json::Value;
use sgr_agent_core::agent_tool::{Tool, ToolError, ToolOutput, parse_args};
use sgr_agent_core::context::AgentContext;
use sgr_agent_core::schema::json_schema_for;

use crate::backend::FileBackend;
use crate::helpers::{backend_err, def_level, def_root};

pub struct TreeTool<B: FileBackend>(pub Arc<B>);

#[derive(Deserialize, JsonSchema)]
struct TreeArgs {
    /// Directory path (default: workspace root)
    #[serde(default = "def_root")]
    root: String,
    /// Max depth (default: 2)
    #[serde(default = "def_level")]
    level: i32,
}

#[async_trait::async_trait]
impl<B: FileBackend> Tool for TreeTool<B> {
    fn name(&self) -> &str {
        "tree"
    }
    fn description(&self) -> &str {
        "Show directory tree structure"
    }
    fn is_read_only(&self) -> bool {
        true
    }
    fn parameters_schema(&self) -> Value {
        json_schema_for::<TreeArgs>()
    }
    async fn execute(&self, args: Value, _ctx: &mut AgentContext) -> Result<ToolOutput, ToolError> {
        let a: TreeArgs = parse_args(&args)?;
        self.0
            .tree(&a.root, a.level)
            .await
            .map(ToolOutput::text)
            .map_err(backend_err)
    }
    async fn execute_readonly(
        &self,
        args: Value,
        _ctx: &AgentContext,
    ) -> Result<ToolOutput, ToolError> {
        let a: TreeArgs = parse_args(&args)?;
        self.0
            .tree(&a.root, a.level)
            .await
            .map(ToolOutput::text)
            .map_err(backend_err)
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::mock_fs::MockFs;
    use sgr_agent_core::agent_tool::Tool;

    #[tokio::test]
    async fn test_tree_output() {
        let fs = Arc::new(MockFs::new());
        fs.add_file("src/main.rs", "fn main() {}");
        fs.add_file("readme.md", "hi");
        let tool = TreeTool(fs.clone());
        let ctx = AgentContext::new();
        let result = tool
            .execute_readonly(serde_json::json!({"root": "/"}), &ctx)
            .await
            .unwrap();
        assert!(result.content.contains("src/main.rs"));
        assert!(result.content.contains("readme.md"));
    }
}