1use anyhow::{Context as _, Result};
2use async_trait::async_trait;
3use collections::HashMap;
4use futures::StreamExt;
5use gpui::AsyncApp;
6use language::{LanguageName, LspAdapter, LspAdapterDelegate, Toolchain};
7use lsp::{LanguageServerBinary, LanguageServerName};
8use node_runtime::{NodeRuntime, VersionStrategy};
9use project::{Fs, lsp_store::language_server_settings};
10use serde_json::{Value, json};
11use smol::fs;
12use std::{
13 any::Any,
14 ffi::OsString,
15 path::{Path, PathBuf},
16 sync::Arc,
17};
18use util::{ResultExt, maybe};
19
20#[cfg(target_os = "windows")]
21const SERVER_PATH: &str =
22 "node_modules/@tailwindcss/language-server/bin/tailwindcss-language-server";
23#[cfg(not(target_os = "windows"))]
24const SERVER_PATH: &str = "node_modules/.bin/tailwindcss-language-server";
25
26fn server_binary_arguments(server_path: &Path) -> Vec<OsString> {
27 vec![server_path.into(), "--stdio".into()]
28}
29
30pub struct TailwindLspAdapter {
31 node: NodeRuntime,
32}
33
34impl TailwindLspAdapter {
35 const SERVER_NAME: LanguageServerName =
36 LanguageServerName::new_static("tailwindcss-language-server");
37 const PACKAGE_NAME: &str = "@tailwindcss/language-server";
38
39 pub fn new(node: NodeRuntime) -> Self {
40 TailwindLspAdapter { node }
41 }
42}
43
44#[async_trait(?Send)]
45impl LspAdapter for TailwindLspAdapter {
46 fn name(&self) -> LanguageServerName {
47 Self::SERVER_NAME
48 }
49
50 async fn check_if_user_installed(
51 &self,
52 delegate: &dyn LspAdapterDelegate,
53 _: Option<Toolchain>,
54 _: &AsyncApp,
55 ) -> Option<LanguageServerBinary> {
56 let path = delegate.which(Self::SERVER_NAME.as_ref()).await?;
57 let env = delegate.shell_env().await;
58
59 Some(LanguageServerBinary {
60 path,
61 env: Some(env),
62 arguments: vec!["--stdio".into()],
63 })
64 }
65
66 async fn fetch_latest_server_version(
67 &self,
68 _: &dyn LspAdapterDelegate,
69 ) -> Result<Box<dyn 'static + Any + Send>> {
70 Ok(Box::new(
71 self.node
72 .npm_package_latest_version(Self::PACKAGE_NAME)
73 .await?,
74 ) as Box<_>)
75 }
76
77 async fn fetch_server_binary(
78 &self,
79 latest_version: Box<dyn 'static + Send + Any>,
80 container_dir: PathBuf,
81 _: &dyn LspAdapterDelegate,
82 ) -> Result<LanguageServerBinary> {
83 let latest_version = latest_version.downcast::<String>().unwrap();
84 let server_path = container_dir.join(SERVER_PATH);
85
86 self.node
87 .npm_install_packages(
88 &container_dir,
89 &[(Self::PACKAGE_NAME, latest_version.as_str())],
90 )
91 .await?;
92
93 Ok(LanguageServerBinary {
94 path: self.node.binary_path().await?,
95 env: None,
96 arguments: server_binary_arguments(&server_path),
97 })
98 }
99
100 async fn check_if_version_installed(
101 &self,
102 version: &(dyn 'static + Send + Any),
103 container_dir: &PathBuf,
104 _: &dyn LspAdapterDelegate,
105 ) -> Option<LanguageServerBinary> {
106 let version = version.downcast_ref::<String>().unwrap();
107 let server_path = container_dir.join(SERVER_PATH);
108
109 let should_install_language_server = self
110 .node
111 .should_install_npm_package(
112 Self::PACKAGE_NAME,
113 &server_path,
114 container_dir,
115 VersionStrategy::Latest(version),
116 )
117 .await;
118
119 if should_install_language_server {
120 None
121 } else {
122 Some(LanguageServerBinary {
123 path: self.node.binary_path().await.ok()?,
124 env: None,
125 arguments: server_binary_arguments(&server_path),
126 })
127 }
128 }
129
130 async fn cached_server_binary(
131 &self,
132 container_dir: PathBuf,
133 _: &dyn LspAdapterDelegate,
134 ) -> Option<LanguageServerBinary> {
135 get_cached_server_binary(container_dir, &self.node).await
136 }
137
138 async fn initialization_options(
139 self: Arc<Self>,
140 _: &dyn Fs,
141 _: &Arc<dyn LspAdapterDelegate>,
142 ) -> Result<Option<serde_json::Value>> {
143 Ok(Some(json!({
144 "provideFormatter": true,
145 "userLanguages": {
146 "html": "html",
147 "css": "css",
148 "javascript": "javascript",
149 "typescriptreact": "typescriptreact",
150 },
151 })))
152 }
153
154 async fn workspace_configuration(
155 self: Arc<Self>,
156 _: &dyn Fs,
157 delegate: &Arc<dyn LspAdapterDelegate>,
158 _: Option<Toolchain>,
159 cx: &mut AsyncApp,
160 ) -> Result<Value> {
161 let mut tailwind_user_settings = cx.update(|cx| {
162 language_server_settings(delegate.as_ref(), &Self::SERVER_NAME, cx)
163 .and_then(|s| s.settings.clone())
164 .unwrap_or_default()
165 })?;
166
167 if tailwind_user_settings.get("emmetCompletions").is_none() {
168 tailwind_user_settings["emmetCompletions"] = Value::Bool(true);
169 }
170
171 Ok(json!({
172 "tailwindCSS": tailwind_user_settings,
173 }))
174 }
175
176 fn language_ids(&self) -> HashMap<LanguageName, String> {
177 HashMap::from_iter([
178 (LanguageName::new("Astro"), "astro".to_string()),
179 (LanguageName::new("HTML"), "html".to_string()),
180 (LanguageName::new("CSS"), "css".to_string()),
181 (LanguageName::new("JavaScript"), "javascript".to_string()),
182 (LanguageName::new("TSX"), "typescriptreact".to_string()),
183 (LanguageName::new("Svelte"), "svelte".to_string()),
184 (LanguageName::new("Elixir"), "phoenix-heex".to_string()),
185 (LanguageName::new("HEEX"), "phoenix-heex".to_string()),
186 (LanguageName::new("ERB"), "erb".to_string()),
187 (LanguageName::new("HTML/ERB"), "erb".to_string()),
188 (LanguageName::new("PHP"), "php".to_string()),
189 (LanguageName::new("Vue.js"), "vue".to_string()),
190 ])
191 }
192}
193
194async fn get_cached_server_binary(
195 container_dir: PathBuf,
196 node: &NodeRuntime,
197) -> Option<LanguageServerBinary> {
198 maybe!(async {
199 let mut last_version_dir = None;
200 let mut entries = fs::read_dir(&container_dir).await?;
201 while let Some(entry) = entries.next().await {
202 let entry = entry?;
203 if entry.file_type().await?.is_dir() {
204 last_version_dir = Some(entry.path());
205 }
206 }
207 let last_version_dir = last_version_dir.context("no cached binary")?;
208 let server_path = last_version_dir.join(SERVER_PATH);
209 anyhow::ensure!(
210 server_path.exists(),
211 "missing executable in directory {last_version_dir:?}"
212 );
213 Ok(LanguageServerBinary {
214 path: node.binary_path().await?,
215 env: None,
216 arguments: server_binary_arguments(&server_path),
217 })
218 })
219 .await
220 .log_err()
221}