1use super::{SlashCommand, SlashCommandOutput};
 2use anyhow::{anyhow, Context as _, Result};
 3use assistant_slash_command::{ArgumentCompletion, SlashCommandOutputSection};
 4use editor::Editor;
 5use gpui::{Task, WeakView};
 6use language::{BufferSnapshot, LspAdapterDelegate};
 7use std::sync::Arc;
 8use std::{path::Path, sync::atomic::AtomicBool};
 9use ui::{IconName, WindowContext};
10use workspace::Workspace;
11
12pub(crate) struct OutlineSlashCommand;
13
14impl SlashCommand for OutlineSlashCommand {
15    fn name(&self) -> String {
16        "symbols".into()
17    }
18
19    fn description(&self) -> String {
20        "Insert symbols for active tab".into()
21    }
22
23    fn menu_text(&self) -> String {
24        self.description()
25    }
26
27    fn complete_argument(
28        self: Arc<Self>,
29        _arguments: &[String],
30        _cancel: Arc<AtomicBool>,
31        _workspace: Option<WeakView<Workspace>>,
32        _cx: &mut WindowContext,
33    ) -> Task<Result<Vec<ArgumentCompletion>>> {
34        Task::ready(Err(anyhow!("this command does not require argument")))
35    }
36
37    fn requires_argument(&self) -> bool {
38        false
39    }
40
41    fn run(
42        self: Arc<Self>,
43        _arguments: &[String],
44        _context_slash_command_output_sections: &[SlashCommandOutputSection<language::Anchor>],
45        _context_buffer: BufferSnapshot,
46        workspace: WeakView<Workspace>,
47        _delegate: Option<Arc<dyn LspAdapterDelegate>>,
48        cx: &mut WindowContext,
49    ) -> Task<Result<SlashCommandOutput>> {
50        let output = workspace.update(cx, |workspace, cx| {
51            let Some(active_item) = workspace.active_item(cx) else {
52                return Task::ready(Err(anyhow!("no active tab")));
53            };
54            let Some(buffer) = active_item
55                .downcast::<Editor>()
56                .and_then(|editor| editor.read(cx).buffer().read(cx).as_singleton())
57            else {
58                return Task::ready(Err(anyhow!("active tab is not an editor")));
59            };
60
61            let snapshot = buffer.read(cx).snapshot();
62            let path = snapshot.resolve_file_path(cx, true);
63
64            cx.background_executor().spawn(async move {
65                let outline = snapshot
66                    .outline(None)
67                    .context("no symbols for active tab")?;
68
69                let path = path.as_deref().unwrap_or(Path::new("untitled"));
70                let mut outline_text = format!("Symbols for {}:\n", path.display());
71                for item in &outline.path_candidates {
72                    outline_text.push_str("- ");
73                    outline_text.push_str(&item.string);
74                    outline_text.push('\n');
75                }
76
77                Ok(SlashCommandOutput {
78                    sections: vec![SlashCommandOutputSection {
79                        range: 0..outline_text.len(),
80                        icon: IconName::ListTree,
81                        label: path.to_string_lossy().to_string().into(),
82                        metadata: None,
83                    }],
84                    text: outline_text,
85                    run_commands_in_text: false,
86                })
87            })
88        });
89
90        output.unwrap_or_else(|error| Task::ready(Err(error)))
91    }
92}