use std::cmp;use std::mem;use std::ops::Range;use std::rc::Rc;use std::sync::Arc; use anyhow::{Context as _, Result};use assistant_settings::AssistantSettings;use client::telemetry::Telemetry;use collections::{hash_map, HashMap, HashSet, VecDeque};use editor::{    actions::SelectAll,    display_map::{        BlockContext, BlockPlacement, BlockProperties, BlockStyle, CustomBlockId, RenderBlock,        ToDisplayPoint,    },    Anchor, AnchorRangeExt, CodeActionProvider, Editor, EditorEvent, ExcerptId, ExcerptRange,    GutterDimensions, MultiBuffer, MultiBufferSnapshot, ToOffset as _, ToPoint,};use feature_flags::{Assistant2FeatureFlag, FeatureFlagViewExt as _};use fs::Fs;use gpui::{    point, App, Context, Entity, Focusable, Global, HighlightStyle, Subscription, Task,    UpdateGlobal, WeakEntity, Window,};use language::{Buffer, Point, Selection, TransactionId};use language_model::{report_assistant_event, LanguageModelRegistry};use multi_buffer::MultiBufferRow;use parking_lot::Mutex;use project::{CodeAction, ProjectTransaction};use prompt_store::PromptBuilder;use settings::{Settings, SettingsStore};use telemetry_events::{AssistantEvent, AssistantKind, AssistantPhase};use terminal_view::{terminal_panel::TerminalPanel, TerminalView};use text::{OffsetRangeExt, ToPoint as _};use ui::prelude::*;use util::RangeExt;use util::ResultExt;use workspace::{dock::Panel, ShowConfiguration};use workspace::{notifications::NotificationId, ItemHandle, Toast, Workspace}; use crate::buffer_codegen::{BufferCodegen, CodegenAlternative, CodegenEvent};use crate::context_store::ContextStore;use crate::inline_prompt_editor::{CodegenStatus, InlineAssistId, PromptEditor, PromptEditorEvent};use crate::terminal_inline_assistant::TerminalInlineAssistant;use crate::thread_store::ThreadStore;use crate::AssistantPanel; pub fn init(    fs: Arc<dyn Fs>,    prompt_builder: Arc<PromptBuilder>,    telemetry: Arc<Telemetry>,    cx: &mut App,) {    cx.set_global(InlineAssistant::new(fs, prompt_builder, telemetry));    cx.observe_new(|_workspace: &mut Workspace, window, cx| {        let Some(window) = window else {            return;        };        let workspace = cx.entity().clone();        InlineAssistant::update_global(cx, |inline_assistant, cx| {            inline_assistant.register_workspace(&workspace, window, cx)        });         cx.observe_flag::<Assistant2FeatureFlag, _>(window, {            |is_assistant2_enabled, _workspace, _window, cx| {                InlineAssistant::update_global(cx, |inline_assistant, _cx| {                    inline_assistant.is_assistant2_enabled = is_assistant2_enabled;                });            }        })        .detach();    })    .detach();} const PROMPT_HISTORY_MAX_LEN: usize = 20; enum InlineAssistTarget {    Editor(Entity<Editor>),    Terminal(Entity<TerminalView>),} pub struct InlineAssistant {    next_assist_id: InlineAssistId,    next_assist_group_id: InlineAssistGroupId,    assists: HashMap<InlineAssistId, InlineAssist>,    assists_by_editor: HashMap<WeakEntity<Editor>, EditorInlineAssists>,    assist_groups: HashMap<InlineAssistGroupId, InlineAssistGroup>,    confirmed_assists: HashMap<InlineAssistId, Entity<CodegenAlternative>>,    prompt_history: VecDeque<String>,    prompt_builder: Arc<PromptBuilder>,    telemetry: Arc<Telemetry>,    fs: Arc<dyn Fs>,    is_assistant2_enabled: bool,} impl Global for InlineAssistant {} impl InlineAssistant {    pub fn new(        fs: Arc<dyn Fs>,        prompt_builder: Arc<PromptBuilder>,        telemetry: Arc<Telemetry>,    ) -> Self {        Self {            next_assist_id: InlineAssistId::default(),            next_assist_group_id: InlineAssistGroupId::default(),            assists: HashMap::default(),            assists_by_editor: HashMap::default(),            assist_groups: HashMap::default(),            confirmed_assists: HashMap::default(),            prompt_history: VecDeque::default(),            prompt_builder,            telemetry,            fs,            is_assistant2_enabled: false,        }    }     pub fn register_workspace(        &mut self,        workspace: &Entity<Workspace>,        window: &mut Window,        cx: &mut App,    ) {        window            .subscribe(workspace, cx, |workspace, event, window, cx| {                Self::update_global(cx, |this, cx| {                    this.handle_workspace_event(workspace, event, window, cx)                });            })            .detach();         let workspace = workspace.downgrade();        cx.observe_global::<SettingsStore>(move |cx| {            let Some(workspace) = workspace.upgrade() else {                return;            };            let Some(terminal_panel) = workspace.read(cx).panel::<TerminalPanel>(cx) else {                return;            };            let enabled = AssistantSettings::get_global(cx).enabled;            terminal_panel.update(cx, |terminal_panel, cx| {                terminal_panel.set_assistant_enabled(enabled, cx)            });        })        .detach();    }     fn handle_workspace_event(        &mut self,        workspace: Entity<Workspace>,        event: &workspace::Event,        window: &mut Window,        cx: &mut App,    ) {        match event {            workspace::Event::UserSavedItem { item, .. } => {                // When the user manually saves an editor, automatically accepts all finished transformations.                if let Some(editor) = item.upgrade().and_then(|item| item.act_as::<Editor>(cx)) {                    if let Some(editor_assists) = self.assists_by_editor.get(&editor.downgrade()) {                        for assist_id in editor_assists.assist_ids.clone() {                            let assist = &self.assists[&assist_id];                            if let CodegenStatus::Done = assist.codegen.read(cx).status(cx) {                                self.finish_assist(assist_id, false, window, cx)                            }                        }                    }                }            }            workspace::Event::ItemAdded { item } => {                self.register_workspace_item(&workspace, item.as_ref(), window, cx);            }            _ => (),        }    }     fn register_workspace_item(        &mut self,        workspace: &Entity<Workspace>,        item: &dyn ItemHandle,        window: &mut Window,        cx: &mut App,    ) {        let is_assistant2_enabled = self.is_assistant2_enabled;         if let Some(editor) = item.act_as::<Editor>(cx) {            editor.update(cx, |editor, cx| {                if is_assistant2_enabled {                    let thread_store = workspace                        .read(cx)                        .panel::<AssistantPanel>(cx)                        .map(|assistant_panel| assistant_panel.read(cx).thread_store().downgrade());                     editor.add_code_action_provider(                        Rc::new(AssistantCodeActionProvider {                            editor: cx.entity().downgrade(),                            workspace: workspace.downgrade(),                            thread_store,                        }),                        window,                        cx,                    );                     // Remove the Assistant1 code action provider, as it still might be registered.                    editor.remove_code_action_provider("assistant".into(), window, cx);                } else {                    editor.remove_code_action_provider(                        ASSISTANT_CODE_ACTION_PROVIDER_ID.into(),                        window,                        cx,                    );                }            });        }    }     pub fn inline_assist(        workspace: &mut Workspace,        _action: &zed_actions::assistant::InlineAssist,        window: &mut Window,        cx: &mut Context<Workspace>,    ) {        let settings = AssistantSettings::get_global(cx);        if !settings.enabled {            return;        }         let Some(inline_assist_target) = Self::resolve_inline_assist_target(            workspace,            workspace.panel::<AssistantPanel>(cx),            window,            cx,        ) else {            return;        };         let is_authenticated = || {            LanguageModelRegistry::read_global(cx)                .active_provider()                .map_or(false, |provider| provider.is_authenticated(cx))        };         let thread_store = workspace            .panel::<AssistantPanel>(cx)            .map(|assistant_panel| assistant_panel.read(cx).thread_store().downgrade());         let handle_assist =            |window: &mut Window, cx: &mut Context<Workspace>| match inline_assist_target {                InlineAssistTarget::Editor(active_editor) => {                    InlineAssistant::update_global(cx, |assistant, cx| {                        assistant.assist(                            &active_editor,                            cx.entity().downgrade(),                            thread_store,                            window,                            cx,                        )                    })                }                InlineAssistTarget::Terminal(active_terminal) => {                    TerminalInlineAssistant::update_global(cx, |assistant, cx| {                        assistant.assist(                            &active_terminal,                            cx.entity().downgrade(),                            thread_store,                            window,                            cx,                        )                    })                }            };         if is_authenticated() {            handle_assist(window, cx);        } else {            cx.spawn_in(window, |_workspace, mut cx| async move {                let Some(task) = cx.update(|_, cx| {                    LanguageModelRegistry::read_global(cx)                        .active_provider()                        .map_or(None, |provider| Some(provider.authenticate(cx)))                })?                else {                    let answer = cx                        .prompt(                            gpui::PromptLevel::Warning,                            "No language model provider configured",                            None,                            &["Configure", "Cancel"],                        )                        .await                        .ok();                    if let Some(answer) = answer {                        if answer == 0 {                            cx.update(|window, cx| {                                window.dispatch_action(Box::new(ShowConfiguration), cx)                            })                            .ok();                        }                    }                    return Ok(());                };                task.await?;                 anyhow::Ok(())            })            .detach_and_log_err(cx);             if is_authenticated() {                handle_assist(window, cx);            }        }    }     pub fn assist(        &mut self,        editor: &Entity<Editor>,        workspace: WeakEntity<Workspace>,        thread_store: Option<WeakEntity<ThreadStore>>,        window: &mut Window,        cx: &mut App,    ) {        let (snapshot, initial_selections) = editor.update(cx, |editor, cx| {            (                editor.buffer().read(cx).snapshot(cx),                editor.selections.all::<Point>(cx),            )        });         let mut selections = Vec::<Selection<Point>>::new();        let mut newest_selection = None;        for mut selection in initial_selections {            if selection.end > selection.start {                selection.start.column = 0;                // If the selection ends at the start of the line, we don't want to include it.                if selection.end.column == 0 {                    selection.end.row -= 1;                }                selection.end.column = snapshot.line_len(MultiBufferRow(selection.end.row));            }             if let Some(prev_selection) = selections.last_mut() {                if selection.start <= prev_selection.end {                    prev_selection.end = selection.end;                    continue;                }            }             let latest_selection = newest_selection.get_or_insert_with(|| selection.clone());            if selection.id > latest_selection.id {                *latest_selection = selection.clone();            }            selections.push(selection);        }        let newest_selection = newest_selection.unwrap();         let mut codegen_ranges = Vec::new();        for (buffer, buffer_range, excerpt_id) in            snapshot.ranges_to_buffer_ranges(selections.iter().map(|selection| {                snapshot.anchor_before(selection.start)..snapshot.anchor_after(selection.end)            }))        {            let anchor_range = Anchor::range_in_buffer(                excerpt_id,                buffer.remote_id(),                buffer.anchor_before(buffer_range.start)..buffer.anchor_after(buffer_range.end),            );             codegen_ranges.push(anchor_range);             if let Some(model) = LanguageModelRegistry::read_global(cx).active_model() {                self.telemetry.report_assistant_event(AssistantEvent {                    conversation_id: None,                    kind: AssistantKind::Inline,                    phase: AssistantPhase::Invoked,                    message_id: None,                    model: model.telemetry_id(),                    model_provider: model.provider_id().to_string(),                    response_latency: None,                    error_message: None,                    language_name: buffer.language().map(|language| language.name().to_proto()),                });            }        }         let assist_group_id = self.next_assist_group_id.post_inc();        let prompt_buffer =            cx.new(|cx| MultiBuffer::singleton(cx.new(|cx| Buffer::local(String::new(), cx)), cx));         let mut assists = Vec::new();        let mut assist_to_focus = None;        for range in codegen_ranges {            let assist_id = self.next_assist_id.post_inc();            let context_store = cx.new(|_cx| ContextStore::new(workspace.clone()));            let codegen = cx.new(|cx| {                BufferCodegen::new(                    editor.read(cx).buffer().clone(),                    range.clone(),                    None,                    context_store.clone(),                    self.telemetry.clone(),                    self.prompt_builder.clone(),                    cx,                )            });             let gutter_dimensions = Arc::new(Mutex::new(GutterDimensions::default()));            let prompt_editor = cx.new(|cx| {                PromptEditor::new_buffer(                    assist_id,                    gutter_dimensions.clone(),                    self.prompt_history.clone(),                    prompt_buffer.clone(),                    codegen.clone(),                    self.fs.clone(),                    context_store,                    workspace.clone(),                    thread_store.clone(),                    window,                    cx,                )            });             if assist_to_focus.is_none() {                let focus_assist = if newest_selection.reversed {                    range.start.to_point(&snapshot) == newest_selection.start                } else {                    range.end.to_point(&snapshot) == newest_selection.end                };                if focus_assist {                    assist_to_focus = Some(assist_id);                }            }             let [prompt_block_id, end_block_id] =                self.insert_assist_blocks(editor, &range, &prompt_editor, cx);             assists.push((                assist_id,                range,                prompt_editor,                prompt_block_id,                end_block_id,            ));        }         let editor_assists = self            .assists_by_editor            .entry(editor.downgrade())            .or_insert_with(|| EditorInlineAssists::new(&editor, window, cx));        let mut assist_group = InlineAssistGroup::new();        for (assist_id, range, prompt_editor, prompt_block_id, end_block_id) in assists {            let codegen = prompt_editor.read(cx).codegen().clone();             self.assists.insert(                assist_id,                InlineAssist::new(                    assist_id,                    assist_group_id,                    editor,                    &prompt_editor,                    prompt_block_id,                    end_block_id,                    range,                    codegen,                    workspace.clone(),                    window,                    cx,                ),            );            assist_group.assist_ids.push(assist_id);            editor_assists.assist_ids.push(assist_id);        }        self.assist_groups.insert(assist_group_id, assist_group);         if let Some(assist_id) = assist_to_focus {            self.focus_assist(assist_id, window, cx);        }    }     #[allow(clippy::too_many_arguments)]    pub fn suggest_assist(        &mut self,        editor: &Entity<Editor>,        mut range: Range<Anchor>,        initial_prompt: String,        initial_transaction_id: Option<TransactionId>,        focus: bool,        workspace: WeakEntity<Workspace>,        thread_store: Option<WeakEntity<ThreadStore>>,        window: &mut Window,        cx: &mut App,    ) -> InlineAssistId {        let assist_group_id = self.next_assist_group_id.post_inc();        let prompt_buffer = cx.new(|cx| Buffer::local(&initial_prompt, cx));        let prompt_buffer = cx.new(|cx| MultiBuffer::singleton(prompt_buffer, cx));         let assist_id = self.next_assist_id.post_inc(); 

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