use anyhow::{anyhow, Context as _, Result};use collections::BTreeMap;use credentials_provider::CredentialsProvider;use editor::{Editor, EditorElement, EditorStyle};use futures::{future::BoxFuture, FutureExt, StreamExt};use gpui::{    AnyView, App, AsyncApp, Context, Entity, FontStyle, Subscription, Task, TextStyle, WhiteSpace,};use http_client::HttpClient;use language_model::{    AuthenticateError, LanguageModel, LanguageModelCompletionEvent, LanguageModelId,    LanguageModelName, LanguageModelProvider, LanguageModelProviderId, LanguageModelProviderName,    LanguageModelProviderState, LanguageModelRequest, RateLimiter, Role,}; use futures::stream::BoxStream;use schemars::JsonSchema;use serde::{Deserialize, Serialize};use settings::{Settings, SettingsStore};use std::sync::Arc;use strum::IntoEnumIterator;use theme::ThemeSettings;use ui::{prelude::*, Icon, IconName, List, Tooltip};use util::ResultExt; use crate::{ui::InstructionListItem, AllLanguageModelSettings}; const PROVIDER_ID: &str = "mistral";const PROVIDER_NAME: &str = "Mistral"; #[derive(Default, Clone, Debug, PartialEq)]pub struct MistralSettings {    pub api_url: String,    pub available_models: Vec<AvailableModel>,    pub needs_setting_migration: bool,} #[derive(Clone, Debug, PartialEq, Serialize, Deserialize, JsonSchema)]pub struct AvailableModel {    pub name: String,    pub display_name: Option<String>,    pub max_tokens: usize,    pub max_output_tokens: Option<u32>,    pub max_completion_tokens: Option<u32>,} pub struct MistralLanguageModelProvider {    http_client: Arc<dyn HttpClient>,    state: gpui::Entity<State>,} pub struct State {    api_key: Option<String>,    api_key_from_env: bool,    _subscription: Subscription,} const MISTRAL_API_KEY_VAR: &str = "MISTRAL_API_KEY"; impl State {    fn is_authenticated(&self) -> bool {        self.api_key.is_some()    }     fn reset_api_key(&self, cx: &mut Context<Self>) -> Task<Result<()>> {        let credentials_provider = <dyn CredentialsProvider>::global(cx);        let api_url = AllLanguageModelSettings::get_global(cx)            .mistral            .api_url            .clone();        cx.spawn(|this, mut cx| async move {            credentials_provider                .delete_credentials(&api_url, &cx)                .await                .log_err();            this.update(&mut cx, |this, cx| {                this.api_key = None;                this.api_key_from_env = false;                cx.notify();            })        })    }     fn set_api_key(&mut self, api_key: String, cx: &mut Context<Self>) -> Task<Result<()>> {        let credentials_provider = <dyn CredentialsProvider>::global(cx);        let api_url = AllLanguageModelSettings::get_global(cx)            .mistral            .api_url            .clone();        cx.spawn(|this, mut cx| async move {            credentials_provider                .write_credentials(&api_url, "Bearer", api_key.as_bytes(), &cx)                .await?;            this.update(&mut cx, |this, cx| {                this.api_key = Some(api_key);                cx.notify();            })        })    }     fn authenticate(&self, cx: &mut Context<Self>) -> Task<Result<(), AuthenticateError>> {        if self.is_authenticated() {            return Task::ready(Ok(()));        }         let credentials_provider = <dyn CredentialsProvider>::global(cx);        let api_url = AllLanguageModelSettings::get_global(cx)            .mistral            .api_url            .clone();        cx.spawn(|this, mut cx| async move {            let (api_key, from_env) = if let Ok(api_key) = std::env::var(MISTRAL_API_KEY_VAR) {                (api_key, true)            } else {                let (_, api_key) = credentials_provider                    .read_credentials(&api_url, &cx)                    .await?                    .ok_or(AuthenticateError::CredentialsNotFound)?;                (                    String::from_utf8(api_key).context("invalid {PROVIDER_NAME} API key")?,                    false,                )            };            this.update(&mut cx, |this, cx| {                this.api_key = Some(api_key);                this.api_key_from_env = from_env;                cx.notify();            })?;             Ok(())        })    }} impl MistralLanguageModelProvider {    pub fn new(http_client: Arc<dyn HttpClient>, cx: &mut App) -> Self {        let state = cx.new(|cx| State {            api_key: None,            api_key_from_env: false,            _subscription: cx.observe_global::<SettingsStore>(|_this: &mut State, cx| {                cx.notify();            }),        });         Self { http_client, state }    }} impl LanguageModelProviderState for MistralLanguageModelProvider {    type ObservableEntity = State;     fn observable_entity(&self) -> Option<gpui::Entity<Self::ObservableEntity>> {        Some(self.state.clone())    }} impl LanguageModelProvider for MistralLanguageModelProvider {    fn id(&self) -> LanguageModelProviderId {        LanguageModelProviderId(PROVIDER_ID.into())    }     fn name(&self) -> LanguageModelProviderName {        LanguageModelProviderName(PROVIDER_NAME.into())    }     fn icon(&self) -> IconName {        IconName::AiMistral    }     fn default_model(&self, _cx: &App) -> Option<Arc<dyn LanguageModel>> {        let model = mistral::Model::default();        Some(Arc::new(MistralLanguageModel {            id: LanguageModelId::from(model.id().to_string()),            model,            state: self.state.clone(),            http_client: self.http_client.clone(),            request_limiter: RateLimiter::new(4),        }))    }     fn provided_models(&self, cx: &App) -> Vec<Arc<dyn LanguageModel>> {        let mut models = BTreeMap::default();         // Add base models from mistral::Model::iter()        for model in mistral::Model::iter() {            if !matches!(model, mistral::Model::Custom { .. }) {                models.insert(model.id().to_string(), model);            }        }         // Override with available models from settings        for model in &AllLanguageModelSettings::get_global(cx)            .mistral            .available_models        {            models.insert(                model.name.clone(),                mistral::Model::Custom {                    name: model.name.clone(),                    display_name: model.display_name.clone(),                    max_tokens: model.max_tokens,                    max_output_tokens: model.max_output_tokens,                    max_completion_tokens: model.max_completion_tokens,                },            );        }         models            .into_values()            .map(|model| {                Arc::new(MistralLanguageModel {                    id: LanguageModelId::from(model.id().to_string()),                    model,                    state: self.state.clone(),                    http_client: self.http_client.clone(),                    request_limiter: RateLimiter::new(4),                }) as Arc<dyn LanguageModel>            })            .collect()    }     fn is_authenticated(&self, cx: &App) -> bool {        self.state.read(cx).is_authenticated()    }     fn authenticate(&self, cx: &mut App) -> Task<Result<(), AuthenticateError>> {        self.state.update(cx, |state, cx| state.authenticate(cx))    }     fn configuration_view(&self, window: &mut Window, cx: &mut App) -> AnyView {        cx.new(|cx| ConfigurationView::new(self.state.clone(), window, cx))            .into()    }     fn reset_credentials(&self, cx: &mut App) -> Task<Result<()>> {        self.state.update(cx, |state, cx| state.reset_api_key(cx))    }} pub struct MistralLanguageModel {    id: LanguageModelId,    model: mistral::Model,    state: gpui::Entity<State>,    http_client: Arc<dyn HttpClient>,    request_limiter: RateLimiter,} impl MistralLanguageModel {    fn stream_completion(        &self,        request: mistral::Request,        cx: &AsyncApp,    ) -> BoxFuture<        'static,        Result<futures::stream::BoxStream<'static, Result<mistral::StreamResponse>>>,    > {        let http_client = self.http_client.clone();        let Ok((api_key, api_url)) = cx.read_entity(&self.state, |state, cx| {            let settings = &AllLanguageModelSettings::get_global(cx).mistral;            (state.api_key.clone(), settings.api_url.clone())        }) else {            return futures::future::ready(Err(anyhow!("App state dropped"))).boxed();        };         let future = self.request_limiter.stream(async move {            let api_key = api_key.ok_or_else(|| anyhow!("Missing Mistral API Key"))?;            let request =                mistral::stream_completion(http_client.as_ref(), &api_url, &api_key, request);            let response = request.await?;            Ok(response)        });         async move { Ok(future.await?.boxed()) }.boxed()    }} impl LanguageModel for MistralLanguageModel {    fn id(&self) -> LanguageModelId {        self.id.clone()    }     fn name(&self) -> LanguageModelName {        LanguageModelName::from(self.model.display_name().to_string())    }     fn provider_id(&self) -> LanguageModelProviderId {        LanguageModelProviderId(PROVIDER_ID.into())    }     fn provider_name(&self) -> LanguageModelProviderName {        LanguageModelProviderName(PROVIDER_NAME.into())    }     fn telemetry_id(&self) -> String {        format!("mistral/{}", self.model.id())    }     fn max_token_count(&self) -> usize {        self.model.max_token_count()    }     fn max_output_tokens(&self) -> Option<u32> {        self.model.max_output_tokens()    }     fn count_tokens(        &self,        request: LanguageModelRequest,        cx: &App,    ) -> BoxFuture<'static, Result<usize>> {        cx.background_spawn(async move {            let messages = request                .messages                .into_iter()                .map(|message| tiktoken_rs::ChatCompletionRequestMessage {                    role: match message.role {                        Role::User => "user".into(),                        Role::Assistant => "assistant".into(),                        Role::System => "system".into(),                    },                    content: Some(message.string_contents()),                    name: None,                    function_call: None,                })                .collect::<Vec<_>>();             tiktoken_rs::num_tokens_from_messages("gpt-4", &messages)        })        .boxed()    }     fn stream_completion(        &self,        request: LanguageModelRequest,        cx: &AsyncApp,    ) -> BoxFuture<'static, Result<BoxStream<'static, Result<LanguageModelCompletionEvent>>>> {        let request = into_mistral(            request,            self.model.id().to_string(),            self.max_output_tokens(),        );        let stream = self.stream_completion(request, cx);         async move {            let stream = stream.await?;            Ok(stream                .map(|result| {                    result.and_then(|response| {                        response                            .choices                            .first()                            .ok_or_else(|| anyhow!("Empty response"))                            .map(|choice| {                                choice                                    .delta                                    .content                                    .clone()                                    .unwrap_or_default()                                    .map(LanguageModelCompletionEvent::Text)                            })                    })                })                .boxed())        }        .boxed()    }     fn use_any_tool(        &self,        request: LanguageModelRequest,        tool_name: String,        tool_description: String,        schema: serde_json::Value,        cx: &AsyncApp,    ) -> BoxFuture<'static, Result<futures::stream::BoxStream<'static, Result<String>>>> {        let mut request = into_mistral(request, self.model.id().into(), self.max_output_tokens());        request.tools = vec![mistral::ToolDefinition::Function {            function: mistral::FunctionDefinition {                name: tool_name.clone(),                description: Some(tool_description),                parameters: Some(schema),            },        }];         let response = self.stream_completion(request, cx);        self.request_limiter            .run(async move {                let stream = response.await?;                 let tool_args_stream = stream                    .filter_map(move |response| async move {                        match response {                            Ok(response) => {                                for choice in response.choices {                                    if let Some(tool_calls) = choice.delta.tool_calls {                                        for tool_call in tool_calls {                                            if let Some(function) = tool_call.function {                                                if let Some(args) = function.arguments {                                                    return Some(Ok(args));                                                }                                            }                                        }                                    }                                }                                None                            }                            Err(e) => Some(Err(e)),                        }                    })                    .boxed();                 Ok(tool_args_stream)            })            .boxed()    }} pub fn into_mistral(    request: LanguageModelRequest,    model: String,    max_output_tokens: Option<u32>,) -> mistral::Request {    let len = request.messages.len();    let merged_messages =        request            .messages            .into_iter()            .fold(Vec::with_capacity(len), |mut acc, msg| {                let role = msg.role;                let content = msg.string_contents();                 acc.push(match role {                    Role::User => mistral::RequestMessage::User { content },                    Role::Assistant => mistral::RequestMessage::Assistant {                        content: Some(content),                        tool_calls: Vec::new(),                    },                    Role::System => mistral::RequestMessage::System { content },                });                acc            });     mistral::Request {        model,        messages: merged_messages,        stream: true,        max_tokens: max_output_tokens,        temperature: request.temperature,        response_format: None,        tools: request            .tools            .into_iter()            .map(|tool| mistral::ToolDefinition::Function {                function: mistral::FunctionDefinition {                    name: tool.name,                    description: Some(tool.description),                    parameters: Some(tool.input_schema),                },            })            .collect(),    }} struct ConfigurationView {    api_key_editor: Entity<Editor>,    state: gpui::Entity<State>,    load_credentials_task: Option<Task<()>>,} impl ConfigurationView {    fn new(state: gpui::Entity<State>, window: &mut Window, cx: &mut Context<Self>) -> Self {        let api_key_editor = cx.new(|cx| {            let mut editor = Editor::single_line(window, cx);            editor.set_placeholder_text("0aBCDEFGhIjKLmNOpqrSTUVwxyzabCDE1f2", cx);            editor        });         cx.observe(&state, |_, _, cx| {            cx.notify();        })        .detach();         let load_credentials_task = Some(cx.spawn_in(window, {            let state = state.clone();            |this, mut cx| async move {                if let Some(task) = state                    .update(&mut cx, |state, cx| state.authenticate(cx))                    .log_err()                {                    // We don't log an error, because "not signed in" is also an error.                    let _ = task.await;                }                 this.update(&mut cx, |this, cx| {                    this.load_credentials_task = None;                    cx.notify();                })                .log_err();            }        }));

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