use anyhow::{anyhow, Result};use async_trait::async_trait;use collections::HashMap;use futures::StreamExt;use gpui::AsyncAppContext;use language::{LanguageServerName, LspAdapter, LspAdapterDelegate};use lsp::LanguageServerBinary;use node_runtime::NodeRuntime;use project::project_settings::ProjectSettings;use serde_json::{json, Value};use settings::Settings;use smol::fs;use std::{    any::Any,    ffi::OsString,    path::{Path, PathBuf},    sync::Arc,};use util::{maybe, ResultExt}; const SERVER_PATH: &str = "node_modules/.bin/tailwindcss-language-server"; fn server_binary_arguments(server_path: &Path) -> Vec<OsString> {    vec![server_path.into(), "--stdio".into()]} pub struct TailwindLspAdapter {    node: Arc<dyn NodeRuntime>,} impl TailwindLspAdapter {    const SERVER_NAME: &'static str = "tailwindcss-language-server";     pub fn new(node: Arc<dyn NodeRuntime>) -> Self {        TailwindLspAdapter { node }    }} #[async_trait(?Send)]impl LspAdapter for TailwindLspAdapter {    fn name(&self) -> LanguageServerName {        LanguageServerName(Self::SERVER_NAME.into())    }     async fn check_if_user_installed(        &self,        _delegate: &dyn LspAdapterDelegate,        cx: &AsyncAppContext,    ) -> Option<LanguageServerBinary> {        let configured_binary = cx            .update(|cx| {                ProjectSettings::get_global(cx)                    .lsp                    .get(Self::SERVER_NAME)                    .and_then(|s| s.binary.clone())            })            .ok()??;         let path = if let Some(configured_path) = configured_binary.path.map(PathBuf::from) {            configured_path        } else {            self.node.binary_path().await.ok()?        };         let arguments = configured_binary            .arguments            .unwrap_or_default()            .iter()            .map(|arg| arg.into())            .collect();         Some(LanguageServerBinary {            path,            arguments,            env: None,        })    }     async fn fetch_latest_server_version(        &self,        _: &dyn LspAdapterDelegate,    ) -> Result<Box<dyn 'static + Any + Send>> {        Ok(Box::new(            self.node                .npm_package_latest_version("@tailwindcss/language-server")                .await?,        ) as Box<_>)    }     async fn fetch_server_binary(        &self,        latest_version: Box<dyn 'static + Send + Any>,        container_dir: PathBuf,        _: &dyn LspAdapterDelegate,    ) -> Result<LanguageServerBinary> {        let latest_version = latest_version.downcast::<String>().unwrap();        let server_path = container_dir.join(SERVER_PATH);        let package_name = "@tailwindcss/language-server";         let should_install_language_server = self            .node            .should_install_npm_package(package_name, &server_path, &container_dir, &latest_version)            .await;         if should_install_language_server {            self.node                .npm_install_packages(&container_dir, &[(package_name, latest_version.as_str())])                .await?;        }         Ok(LanguageServerBinary {            path: self.node.binary_path().await?,            env: None,            arguments: server_binary_arguments(&server_path),        })    }     async fn cached_server_binary(        &self,        container_dir: PathBuf,        _: &dyn LspAdapterDelegate,    ) -> Option<LanguageServerBinary> {        get_cached_server_binary(container_dir, &*self.node).await    }     async fn installation_test_binary(        &self,        container_dir: PathBuf,    ) -> Option<LanguageServerBinary> {        get_cached_server_binary(container_dir, &*self.node).await    }     async fn initialization_options(        self: Arc<Self>,        _: &Arc<dyn LspAdapterDelegate>,    ) -> Result<Option<serde_json::Value>> {        Ok(Some(json!({            "provideFormatter": true,            "userLanguages": {                "html": "html",                "css": "css",                "javascript": "javascript",                "typescriptreact": "typescriptreact",            },        })))    }     async fn workspace_configuration(        self: Arc<Self>,        _: &Arc<dyn LspAdapterDelegate>,        cx: &mut AsyncAppContext,    ) -> Result<Value> {        let tailwind_user_settings = cx.update(|cx| {            ProjectSettings::get_global(cx)                .lsp                .get(Self::SERVER_NAME)                .and_then(|s| s.settings.clone())                .unwrap_or_default()        })?;         // We need to set this to null if it's not set, because tailwindcss-languageserver        // will check whether it's an object and if it is (even if it's empty) it will        // ignore the `userLanguages` from the initialization options.        let include_languages = tailwind_user_settings            .get("includeLanguages")            .cloned()            .unwrap_or(Value::Null);         let experimental = tailwind_user_settings            .get("experimental")            .cloned()            .unwrap_or_else(|| json!([]));         Ok(json!({            "tailwindCSS": {                "emmetCompletions": true,                "includeLanguages": include_languages,                "experimental": experimental,            }        }))    }     fn language_ids(&self) -> HashMap<String, String> {        HashMap::from_iter([            ("Astro".to_string(), "astro".to_string()),            ("HTML".to_string(), "html".to_string()),            ("CSS".to_string(), "css".to_string()),            ("JavaScript".to_string(), "javascript".to_string()),            ("TSX".to_string(), "typescriptreact".to_string()),            ("Svelte".to_string(), "svelte".to_string()),            ("Elixir".to_string(), "phoenix-heex".to_string()),            ("HEEX".to_string(), "phoenix-heex".to_string()),            ("ERB".to_string(), "erb".to_string()),            ("PHP".to_string(), "php".to_string()),            ("Vue.js".to_string(), "vue".to_string()),        ])    }} async fn get_cached_server_binary(    container_dir: PathBuf,    node: &dyn NodeRuntime,) -> Option<LanguageServerBinary> {    maybe!(async {        let mut last_version_dir = None;        let mut entries = fs::read_dir(&container_dir).await?;        while let Some(entry) = entries.next().await {            let entry = entry?;            if entry.file_type().await?.is_dir() {                last_version_dir = Some(entry.path());            }        }        let last_version_dir = last_version_dir.ok_or_else(|| anyhow!("no cached binary"))?;        let server_path = last_version_dir.join(SERVER_PATH);        if server_path.exists() {            Ok(LanguageServerBinary {                path: node.binary_path().await?,                env: None,                arguments: server_binary_arguments(&server_path),            })        } else {            Err(anyhow!(                "missing executable in directory {:?}",                last_version_dir            ))        }    })    .await    .log_err()}