use anyhow::{Context as _, Result};use async_trait::async_trait;use collections::HashMap;use futures::StreamExt;use gpui::AsyncApp;use language::{LanguageName, LspAdapter, LspAdapterDelegate, LspInstaller, Toolchain};use lsp::{LanguageServerBinary, LanguageServerName};use node_runtime::{NodeRuntime, VersionStrategy};use project::lsp_store::language_server_settings;use serde_json::{Value, json};use smol::fs;use std::{    ffi::OsString,    path::{Path, PathBuf},    sync::Arc,};use util::{ResultExt, maybe}; #[cfg(target_os = "windows")]const SERVER_PATH: &str =    "node_modules/@tailwindcss/language-server/bin/tailwindcss-language-server";#[cfg(not(target_os = "windows"))]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: NodeRuntime,} impl TailwindLspAdapter {    const SERVER_NAME: LanguageServerName =        LanguageServerName::new_static("tailwindcss-language-server");    const PACKAGE_NAME: &str = "@tailwindcss/language-server";     pub fn new(node: NodeRuntime) -> Self {        TailwindLspAdapter { node }    }} impl LspInstaller for TailwindLspAdapter {    type BinaryVersion = String;     async fn fetch_latest_server_version(        &self,        _: &dyn LspAdapterDelegate,        _: bool,        _: &mut AsyncApp,    ) -> Result<String> {        self.node            .npm_package_latest_version(Self::PACKAGE_NAME)            .await    }     async fn check_if_user_installed(        &self,        delegate: &dyn LspAdapterDelegate,        _: Option<Toolchain>,        _: &AsyncApp,    ) -> Option<LanguageServerBinary> {        let path = delegate.which(Self::SERVER_NAME.as_ref()).await?;        let env = delegate.shell_env().await;         Some(LanguageServerBinary {            path,            env: Some(env),            arguments: vec!["--stdio".into()],        })    }     async fn fetch_server_binary(        &self,        latest_version: String,        container_dir: PathBuf,        _: &dyn LspAdapterDelegate,    ) -> Result<LanguageServerBinary> {        let server_path = container_dir.join(SERVER_PATH);         self.node            .npm_install_packages(                &container_dir,                &[(Self::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 check_if_version_installed(        &self,        version: &String,        container_dir: &PathBuf,        _: &dyn LspAdapterDelegate,    ) -> Option<LanguageServerBinary> {        let server_path = container_dir.join(SERVER_PATH);         let should_install_language_server = self            .node            .should_install_npm_package(                Self::PACKAGE_NAME,                &server_path,                container_dir,                VersionStrategy::Latest(version),            )            .await;         if should_install_language_server {            None        } else {            Some(LanguageServerBinary {                path: self.node.binary_path().await.ok()?,                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_trait(?Send)]impl LspAdapter for TailwindLspAdapter {    fn name(&self) -> LanguageServerName {        Self::SERVER_NAME    }     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",                "typescript": "typescript",                "typescriptreact": "typescriptreact",            },        })))    }     async fn workspace_configuration(        self: Arc<Self>,        delegate: &Arc<dyn LspAdapterDelegate>,        _: Option<Toolchain>,        cx: &mut AsyncApp,    ) -> Result<Value> {        let mut tailwind_user_settings = cx.update(|cx| {            language_server_settings(delegate.as_ref(), &Self::SERVER_NAME, cx)                .and_then(|s| s.settings.clone())                .unwrap_or_default()        })?;         if tailwind_user_settings.get("emmetCompletions").is_none() {            tailwind_user_settings["emmetCompletions"] = Value::Bool(true);        }         Ok(json!({            "tailwindCSS": tailwind_user_settings,        }))    }     fn language_ids(&self) -> HashMap<LanguageName, String> {        HashMap::from_iter([            (LanguageName::new("Astro"), "astro".to_string()),            (LanguageName::new("HTML"), "html".to_string()),            (LanguageName::new("CSS"), "css".to_string()),            (LanguageName::new("JavaScript"), "javascript".to_string()),            (LanguageName::new("TypeScript"), "typescript".to_string()),            (LanguageName::new("TSX"), "typescriptreact".to_string()),            (LanguageName::new("Svelte"), "svelte".to_string()),            (LanguageName::new("Elixir"), "phoenix-heex".to_string()),            (LanguageName::new("HEEX"), "phoenix-heex".to_string()),            (LanguageName::new("ERB"), "erb".to_string()),            (LanguageName::new("HTML+ERB"), "erb".to_string()),            (LanguageName::new("HTML/ERB"), "erb".to_string()),            (LanguageName::new("PHP"), "php".to_string()),            (LanguageName::new("Vue.js"), "vue".to_string()),        ])    }} async fn get_cached_server_binary(    container_dir: PathBuf,    node: &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.context("no cached binary")?;        let server_path = last_version_dir.join(SERVER_PATH);        anyhow::ensure!(            server_path.exists(),            "missing executable in directory {last_version_dir:?}"        );        Ok(LanguageServerBinary {            path: node.binary_path().await?,            env: None,            arguments: server_binary_arguments(&server_path),        })    })    .await    .log_err()}