1use anyhow::{anyhow, Result};
 2use assistant_tool::Tool;
 3use gpui::{App, Entity, Task};
 4use language_model::LanguageModelRequestMessage;
 5use project::Project;
 6use schemars::JsonSchema;
 7use serde::{Deserialize, Serialize};
 8use std::{fmt::Write, path::Path, sync::Arc};
 9
10#[derive(Debug, Serialize, Deserialize, JsonSchema)]
11pub struct ListDirectoryToolInput {
12    /// The relative path of the directory to list.
13    ///
14    /// This path should never be absolute, and the first component
15    /// of the path should always be a top-level directory in a project.
16    ///
17    /// <example>
18    /// If the project has the following top-level directories:
19    ///
20    /// - directory1
21    /// - directory2
22    ///
23    /// You can list the contents of `directory1` by using the path `directory1`.
24    /// </example>
25    ///
26    /// <example>
27    /// If the project has the following top-level directories:
28    ///
29    /// - foo
30    /// - bar
31    ///
32    /// If you wanna list contents in the directory `foo/baz`, you should use the path `foo/baz`.
33    /// </example>
34    pub path: Arc<Path>,
35}
36
37pub struct ListDirectoryTool;
38
39impl Tool for ListDirectoryTool {
40    fn name(&self) -> String {
41        "list-directory".into()
42    }
43
44    fn description(&self) -> String {
45        include_str!("./list_directory_tool/description.md").into()
46    }
47
48    fn input_schema(&self) -> serde_json::Value {
49        let schema = schemars::schema_for!(ListDirectoryToolInput);
50        serde_json::to_value(&schema).unwrap()
51    }
52
53    fn run(
54        self: Arc<Self>,
55        input: serde_json::Value,
56        _messages: &[LanguageModelRequestMessage],
57        project: Entity<Project>,
58        cx: &mut App,
59    ) -> Task<Result<String>> {
60        let input = match serde_json::from_value::<ListDirectoryToolInput>(input) {
61            Ok(input) => input,
62            Err(err) => return Task::ready(Err(anyhow!(err))),
63        };
64
65        let Some(worktree_root_name) = input.path.components().next() else {
66            return Task::ready(Err(anyhow!("Invalid path")));
67        };
68        let Some(worktree) = project
69            .read(cx)
70            .worktree_for_root_name(&worktree_root_name.as_os_str().to_string_lossy(), cx)
71        else {
72            return Task::ready(Err(anyhow!("Directory not found in the project")));
73        };
74        let path = input.path.strip_prefix(worktree_root_name).unwrap();
75        let mut output = String::new();
76        for entry in worktree.read(cx).child_entries(path) {
77            writeln!(
78                output,
79                "{}",
80                Path::new(worktree_root_name.as_os_str())
81                    .join(&entry.path)
82                    .display(),
83            )
84            .unwrap();
85        }
86        Task::ready(Ok(output))
87    }
88}