use std::path::Path;use std::sync::Arc;use std::sync::atomic::AtomicBool; use chrono::{DateTime, Utc};use fuzzy::StringMatchCandidate;use gpui::{App, DismissEvent, Entity, FocusHandle, Focusable, Task, WeakEntity};use picker::{Picker, PickerDelegate};use ui::{ListItem, prelude::*}; use crate::context_picker::ContextPicker;use crate::context_store::{self, ContextStore};use crate::thread::ThreadId;use crate::thread_store::{TextThreadStore, ThreadStore}; pub struct ThreadContextPicker {    picker: Entity<Picker<ThreadContextPickerDelegate>>,} impl ThreadContextPicker {    pub fn new(        thread_store: WeakEntity<ThreadStore>,        text_thread_context_store: WeakEntity<TextThreadStore>,        context_picker: WeakEntity<ContextPicker>,        context_store: WeakEntity<context_store::ContextStore>,        window: &mut Window,        cx: &mut Context<Self>,    ) -> Self {        let delegate = ThreadContextPickerDelegate::new(            thread_store,            text_thread_context_store,            context_picker,            context_store,        );        let picker = cx.new(|cx| Picker::uniform_list(delegate, window, cx));         ThreadContextPicker { picker }    }} impl Focusable for ThreadContextPicker {    fn focus_handle(&self, cx: &App) -> FocusHandle {        self.picker.focus_handle(cx)    }} impl Render for ThreadContextPicker {    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {        self.picker.clone()    }} #[derive(Debug, Clone)]pub enum ThreadContextEntry {    Thread {        id: ThreadId,        title: SharedString,    },    Context {        path: Arc<Path>,        title: SharedString,    },} impl ThreadContextEntry {    pub fn title(&self) -> &SharedString {        match self {            Self::Thread { title, .. } => title,            Self::Context { title, .. } => title,        }    }} pub struct ThreadContextPickerDelegate {    thread_store: WeakEntity<ThreadStore>,    text_thread_store: WeakEntity<TextThreadStore>,    context_picker: WeakEntity<ContextPicker>,    context_store: WeakEntity<context_store::ContextStore>,    matches: Vec<ThreadContextEntry>,    selected_index: usize,} impl ThreadContextPickerDelegate {    pub fn new(        thread_store: WeakEntity<ThreadStore>,        text_thread_store: WeakEntity<TextThreadStore>,        context_picker: WeakEntity<ContextPicker>,        context_store: WeakEntity<context_store::ContextStore>,    ) -> Self {        ThreadContextPickerDelegate {            thread_store,            context_picker,            context_store,            text_thread_store,            matches: Vec::new(),            selected_index: 0,        }    }} impl PickerDelegate for ThreadContextPickerDelegate {    type ListItem = ListItem;     fn match_count(&self) -> usize {        self.matches.len()    }     fn selected_index(&self) -> usize {        self.selected_index    }     fn set_selected_index(        &mut self,        ix: usize,        _window: &mut Window,        _cx: &mut Context<Picker<Self>>,    ) {        self.selected_index = ix;    }     fn placeholder_text(&self, _window: &mut Window, _cx: &mut App) -> Arc<str> {        "Search threads…".into()    }     fn update_matches(        &mut self,        query: String,        window: &mut Window,        cx: &mut Context<Picker<Self>>,    ) -> Task<()> {        let Some((thread_store, text_thread_context_store)) = self            .thread_store            .upgrade()            .zip(self.text_thread_store.upgrade())        else {            return Task::ready(());        };         let search_task = search_threads(            query,            Arc::new(AtomicBool::default()),            thread_store,            text_thread_context_store,            cx,        );        cx.spawn_in(window, async move |this, cx| {            let matches = search_task.await;            this.update(cx, |this, cx| {                this.delegate.matches = matches.into_iter().map(|mat| mat.thread).collect();                this.delegate.selected_index = 0;                cx.notify();            })            .ok();        })    }     fn confirm(&mut self, _secondary: bool, window: &mut Window, cx: &mut Context<Picker<Self>>) {        let Some(entry) = self.matches.get(self.selected_index) else {            return;        };         match entry {            ThreadContextEntry::Thread { id, .. } => {                let Some(thread_store) = self.thread_store.upgrade() else {                    return;                };                let open_thread_task =                    thread_store.update(cx, |this, cx| this.open_thread(&id, window, cx));                 cx.spawn(async move |this, cx| {                    let thread = open_thread_task.await?;                    this.update(cx, |this, cx| {                        this.delegate                            .context_store                            .update(cx, |context_store, cx| {                                context_store.add_thread(thread, true, cx)                            })                            .ok();                    })                })                .detach_and_log_err(cx);            }            ThreadContextEntry::Context { path, .. } => {                let Some(text_thread_store) = self.text_thread_store.upgrade() else {                    return;                };                let task = text_thread_store                    .update(cx, |this, cx| this.open_local_context(path.clone(), cx));                 cx.spawn(async move |this, cx| {                    let thread = task.await?;                    this.update(cx, |this, cx| {                        this.delegate                            .context_store                            .update(cx, |context_store, cx| {                                context_store.add_text_thread(thread, true, cx)                            })                            .ok();                    })                })                .detach_and_log_err(cx);            }        }    }     fn dismissed(&mut self, _window: &mut Window, cx: &mut Context<Picker<Self>>) {        self.context_picker            .update(cx, |_, cx| {                cx.emit(DismissEvent);            })            .ok();    }     fn render_match(        &self,        ix: usize,        selected: bool,        _window: &mut Window,        cx: &mut Context<Picker<Self>>,    ) -> Option<Self::ListItem> {        let thread = &self.matches[ix];         Some(ListItem::new(ix).inset(true).toggle_state(selected).child(            render_thread_context_entry(thread, self.context_store.clone(), cx),        ))    }} pub fn render_thread_context_entry(    entry: &ThreadContextEntry,    context_store: WeakEntity<ContextStore>,    cx: &mut App,) -> Div {    let is_added = match entry {        ThreadContextEntry::Thread { id, .. } => context_store            .upgrade()            .map_or(false, |ctx_store| ctx_store.read(cx).includes_thread(&id)),        ThreadContextEntry::Context { path, .. } => {            context_store.upgrade().map_or(false, |ctx_store| {                ctx_store.read(cx).includes_text_thread(path)            })        }    };     h_flex()        .gap_1p5()        .w_full()        .justify_between()        .child(            h_flex()                .gap_1p5()                .max_w_72()                .child(                    Icon::new(IconName::MessageBubbles)                        .size(IconSize::XSmall)                        .color(Color::Muted),                )                .child(Label::new(entry.title().clone()).truncate()),        )        .when(is_added, |el| {            el.child(                h_flex()                    .gap_1()                    .child(                        Icon::new(IconName::Check)                            .size(IconSize::Small)                            .color(Color::Success),                    )                    .child(Label::new("Added").size(LabelSize::Small)),            )        })} #[derive(Clone)]pub struct ThreadMatch {    pub thread: ThreadContextEntry,    pub is_recent: bool,} pub fn unordered_thread_entries(    thread_store: Entity<ThreadStore>,    text_thread_store: Entity<TextThreadStore>,    cx: &App,) -> impl Iterator<Item = (DateTime<Utc>, ThreadContextEntry)> {    let threads = thread_store.read(cx).unordered_threads().map(|thread| {        (            thread.updated_at,            ThreadContextEntry::Thread {                id: thread.id.clone(),                title: thread.summary.clone(),            },        )    });     let text_threads = text_thread_store        .read(cx)        .unordered_contexts()        .map(|context| {            (                context.mtime.to_utc(),                ThreadContextEntry::Context {                    path: context.path.clone(),                    title: context.title.clone().into(),                },            )        });     threads.chain(text_threads)} pub(crate) fn search_threads(    query: String,    cancellation_flag: Arc<AtomicBool>,    thread_store: Entity<ThreadStore>,    text_thread_store: Entity<TextThreadStore>,    cx: &mut App,) -> Task<Vec<ThreadMatch>> {    let mut threads =        unordered_thread_entries(thread_store, text_thread_store, cx).collect::<Vec<_>>();    threads.sort_unstable_by_key(|(updated_at, _)| std::cmp::Reverse(*updated_at));     let executor = cx.background_executor().clone();    cx.background_spawn(async move {        if query.is_empty() {            threads                .into_iter()                .map(|(_, thread)| ThreadMatch {                    thread,                    is_recent: false,                })                .collect()        } else {            let candidates = threads                .iter()                .enumerate()                .map(|(id, (_, thread))| StringMatchCandidate::new(id, &thread.title()))                .collect::<Vec<_>>();            let matches = fuzzy::match_strings(                &candidates,                &query,                false,                100,                &cancellation_flag,                executor,            )            .await;             matches                .into_iter()                .map(|mat| ThreadMatch {                    thread: threads[mat.candidate_id].1.clone(),                    is_recent: false,                })                .collect()        }    })}