use crate::context_editor::ContextEditor;use anyhow::Result;pub use assistant_slash_command::SlashCommand;use assistant_slash_command::{AfterCompletion, SlashCommandLine, SlashCommandWorkingSet};use editor::{CompletionProvider, Editor, ExcerptId};use fuzzy::{StringMatchCandidate, match_strings};use gpui::{App, AppContext as _, Context, Entity, Task, WeakEntity, Window};use language::{Anchor, Buffer, ToPoint};use parking_lot::Mutex;use project::{CompletionIntent, CompletionSource, lsp_store::CompletionDocumentation};use rope::Point;use std::{    cell::RefCell,    ops::Range,    rc::Rc,    sync::{        Arc,        atomic::{AtomicBool, Ordering::SeqCst},    },};use workspace::Workspace; pub struct SlashCommandCompletionProvider {    cancel_flag: Mutex<Arc<AtomicBool>>,    slash_commands: Arc<SlashCommandWorkingSet>,    editor: Option<WeakEntity<ContextEditor>>,    workspace: Option<WeakEntity<Workspace>>,} impl SlashCommandCompletionProvider {    pub fn new(        slash_commands: Arc<SlashCommandWorkingSet>,        editor: Option<WeakEntity<ContextEditor>>,        workspace: Option<WeakEntity<Workspace>>,    ) -> Self {        Self {            cancel_flag: Mutex::new(Arc::new(AtomicBool::new(false))),            slash_commands,            editor,            workspace,        }    }     fn complete_command_name(        &self,        command_name: &str,        command_range: Range<Anchor>,        name_range: Range<Anchor>,        window: &mut Window,        cx: &mut App,    ) -> Task<Result<Option<Vec<project::Completion>>>> {        let slash_commands = self.slash_commands.clone();        let candidates = slash_commands            .command_names(cx)            .into_iter()            .enumerate()            .map(|(ix, def)| StringMatchCandidate::new(ix, &def))            .collect::<Vec<_>>();        let command_name = command_name.to_string();        let editor = self.editor.clone();        let workspace = self.workspace.clone();        window.spawn(cx, async move |cx| {            let matches = match_strings(                &candidates,                &command_name,                true,                usize::MAX,                &Default::default(),                cx.background_executor().clone(),            )            .await;             cx.update(|_, cx| {                Some(                    matches                        .into_iter()                        .filter_map(|mat| {                            let command = slash_commands.command(&mat.string, cx)?;                            let mut new_text = mat.string.clone();                            let requires_argument = command.requires_argument();                            let accepts_arguments = command.accepts_arguments();                            if requires_argument || accepts_arguments {                                new_text.push(' ');                            }                             let confirm =                                editor                                    .clone()                                    .zip(workspace.clone())                                    .map(|(editor, workspace)| {                                        let command_name = mat.string.clone();                                        let command_range = command_range.clone();                                        let editor = editor.clone();                                        let workspace = workspace.clone();                                        Arc::new(                                            move |intent: CompletionIntent,                                            window: &mut Window,                                            cx: &mut App| {                                                if !requires_argument                                                && (!accepts_arguments || intent.is_complete())                                                {                                                    editor                                                        .update(cx, |editor, cx| {                                                            editor.run_command(                                                                command_range.clone(),                                                                &command_name,                                                                &[],                                                                true,                                                                workspace.clone(),                                                                window,                                                                cx,                                                            );                                                        })                                                        .ok();                                                    false                                                } else {                                                    requires_argument || accepts_arguments                                                }                                            },                                        ) as Arc<_>                                    });                            Some(project::Completion {                                replace_range: name_range.clone(),                                documentation: Some(CompletionDocumentation::SingleLine(                                    command.description().into(),                                )),                                new_text,                                label: command.label(cx),                                icon_path: None,                                insert_text_mode: None,                                confirm,                                source: CompletionSource::Custom,                            })                        })                        .collect(),                )            })        })    }     fn complete_command_argument(        &self,        command_name: &str,        arguments: &[String],        command_range: Range<Anchor>,        argument_range: Range<Anchor>,        last_argument_range: Range<Anchor>,        window: &mut Window,        cx: &mut App,    ) -> Task<Result<Option<Vec<project::Completion>>>> {        let new_cancel_flag = Arc::new(AtomicBool::new(false));        let mut flag = self.cancel_flag.lock();        flag.store(true, SeqCst);        *flag = new_cancel_flag.clone();        if let Some(command) = self.slash_commands.command(command_name, cx) {            let completions = command.complete_argument(                arguments,                new_cancel_flag.clone(),                self.workspace.clone(),                window,                cx,            );            let command_name: Arc<str> = command_name.into();            let editor = self.editor.clone();            let workspace = self.workspace.clone();            let arguments = arguments.to_vec();            cx.background_spawn(async move {                Ok(Some(                    completions                        .await?                        .into_iter()                        .map(|new_argument| {                            let confirm =                                editor                                    .clone()                                    .zip(workspace.clone())                                    .map(|(editor, workspace)| {                                        Arc::new({                                            let mut completed_arguments = arguments.clone();                                            if new_argument.replace_previous_arguments {                                                completed_arguments.clear();                                            } else {                                                completed_arguments.pop();                                            }                                            completed_arguments.push(new_argument.new_text.clone());                                             let command_range = command_range.clone();                                            let command_name = command_name.clone();                                            move |intent: CompletionIntent,                                              window: &mut Window,                                              cx: &mut App| {                                            if new_argument.after_completion.run()                                                || intent.is_complete()                                            {                                                editor                                                    .update(cx, |editor, cx| {                                                        editor.run_command(                                                            command_range.clone(),                                                            &command_name,                                                            &completed_arguments,                                                            true,                                                            workspace.clone(),                                                            window,                                                            cx,                                                        );                                                    })                                                    .ok();                                                false                                            } else {                                                !new_argument.after_completion.run()                                            }                                        }                                        }) as Arc<_>                                    });                             let mut new_text = new_argument.new_text.clone();                            if new_argument.after_completion == AfterCompletion::Continue {                                new_text.push(' ');                            }                             project::Completion {                                replace_range: if new_argument.replace_previous_arguments {                                    argument_range.clone()                                } else {                                    last_argument_range.clone()                                },                                label: new_argument.label,                                icon_path: None,                                new_text,                                documentation: None,                                confirm,                                insert_text_mode: None,                                source: CompletionSource::Custom,                            }                        })                        .collect(),                ))            })        } else {            Task::ready(Ok(Some(Vec::new())))        }    }} impl CompletionProvider for SlashCommandCompletionProvider {    fn completions(        &self,        _excerpt_id: ExcerptId,        buffer: &Entity<Buffer>,        buffer_position: Anchor,        _: editor::CompletionContext,        window: &mut Window,        cx: &mut Context<Editor>,    ) -> Task<Result<Option<Vec<project::Completion>>>> {        let Some((name, arguments, command_range, last_argument_range)) =            buffer.update(cx, |buffer, _cx| {                let position = buffer_position.to_point(buffer);                let line_start = Point::new(position.row, 0);                let mut lines = buffer.text_for_range(line_start..position).lines();                let line = lines.next()?;                let call = SlashCommandLine::parse(line)?;                 let command_range_start = Point::new(position.row, call.name.start as u32 - 1);                let command_range_end = Point::new(                    position.row,                    call.arguments.last().map_or(call.name.end, |arg| arg.end) as u32,                );                let command_range = buffer.anchor_after(command_range_start)                    ..buffer.anchor_after(command_range_end);                 let name = line[call.name.clone()].to_string();                let (arguments, last_argument_range) = if let Some(argument) = call.arguments.last()                {                    let last_arg_start =                        buffer.anchor_after(Point::new(position.row, argument.start as u32));                    let first_arg_start = call.arguments.first().expect("we have the last element");                    let first_arg_start =                        buffer.anchor_after(Point::new(position.row, first_arg_start.start as u32));                    let arguments = call                        .arguments                        .iter()                        .filter_map(|argument| Some(line.get(argument.clone())?.to_string()))                        .collect::<Vec<_>>();                    let argument_range = first_arg_start..buffer_position;                    (                        Some((arguments, argument_range)),                        last_arg_start..buffer_position,                    )                } else {                    let start =                        buffer.anchor_after(Point::new(position.row, call.name.start as u32));                    (None, start..buffer_position)                };                 Some((name, arguments, command_range, last_argument_range))            })        else {            return Task::ready(Ok(Some(Vec::new())));        };         if let Some((arguments, argument_range)) = arguments {            self.complete_command_argument(                &name,                &arguments,                command_range,                argument_range,                last_argument_range,                window,                cx,            )        } else {            self.complete_command_name(&name, command_range, last_argument_range, window, cx)        }    }     fn resolve_completions(        &self,        _: Entity<Buffer>,        _: Vec<usize>,        _: Rc<RefCell<Box<[project::Completion]>>>,        _: &mut Context<Editor>,    ) -> Task<Result<bool>> {        Task::ready(Ok(true))    }     fn is_completion_trigger(        &self,        buffer: &Entity<Buffer>,        position: language::Anchor,        _text: &str,        _trigger_in_words: bool,        cx: &mut Context<Editor>,    ) -> bool {        let buffer = buffer.read(cx);        let position = position.to_point(buffer);        let line_start = Point::new(position.row, 0);        let mut lines = buffer.text_for_range(line_start..position).lines();        if let Some(line) = lines.next() {            SlashCommandLine::parse(line).is_some()        } else {            false        }    }     fn sort_completions(&self) -> bool {        false    }}