1use anyhow::{anyhow, Result};
  2use async_trait::async_trait;
  3use futures::StreamExt;
  4use language::{LanguageServerName, LspAdapter, LspAdapterDelegate};
  5use lsp::LanguageServerBinary;
  6use node_runtime::NodeRuntime;
  7use serde_json::json;
  8use smol::fs;
  9use std::{
 10    any::Any,
 11    ffi::OsString,
 12    path::{Path, PathBuf},
 13    sync::Arc,
 14};
 15use util::{async_maybe, ResultExt};
 16
 17const SERVER_PATH: &str = "node_modules/@astrojs/language-server/bin/nodeServer.js";
 18
 19fn server_binary_arguments(server_path: &Path) -> Vec<OsString> {
 20    vec![server_path.into(), "--stdio".into()]
 21}
 22
 23pub struct AstroLspAdapter {
 24    node: Arc<dyn NodeRuntime>,
 25}
 26
 27impl AstroLspAdapter {
 28    pub fn new(node: Arc<dyn NodeRuntime>) -> Self {
 29        AstroLspAdapter { node }
 30    }
 31}
 32
 33#[async_trait]
 34impl LspAdapter for AstroLspAdapter {
 35    fn name(&self) -> LanguageServerName {
 36        LanguageServerName("astro-language-server".into())
 37    }
 38
 39    async fn fetch_latest_server_version(
 40        &self,
 41        _: &dyn LspAdapterDelegate,
 42    ) -> Result<Box<dyn 'static + Any + Send>> {
 43        Ok(Box::new(
 44            self.node
 45                .npm_package_latest_version("@astrojs/language-server")
 46                .await?,
 47        ) as Box<_>)
 48    }
 49
 50    async fn fetch_server_binary(
 51        &self,
 52        version: Box<dyn 'static + Send + Any>,
 53        container_dir: PathBuf,
 54        _: &dyn LspAdapterDelegate,
 55    ) -> Result<LanguageServerBinary> {
 56        let version = version.downcast::<String>().unwrap();
 57        let server_path = container_dir.join(SERVER_PATH);
 58
 59        if fs::metadata(&server_path).await.is_err() {
 60            self.node
 61                .npm_install_packages(
 62                    &container_dir,
 63                    &[("@astrojs/language-server", version.as_str())],
 64                )
 65                .await?;
 66        }
 67
 68        Ok(LanguageServerBinary {
 69            path: self.node.binary_path().await?,
 70            env: None,
 71            arguments: server_binary_arguments(&server_path),
 72        })
 73    }
 74
 75    async fn cached_server_binary(
 76        &self,
 77        container_dir: PathBuf,
 78        _: &dyn LspAdapterDelegate,
 79    ) -> Option<LanguageServerBinary> {
 80        get_cached_server_binary(container_dir, &*self.node).await
 81    }
 82
 83    async fn installation_test_binary(
 84        &self,
 85        container_dir: PathBuf,
 86    ) -> Option<LanguageServerBinary> {
 87        get_cached_server_binary(container_dir, &*self.node).await
 88    }
 89
 90    fn initialization_options(&self) -> Option<serde_json::Value> {
 91        Some(json!({
 92            "provideFormatter": true,
 93            "typescript": {
 94                "tsdk": "node_modules/typescript/lib",
 95            }
 96        }))
 97    }
 98
 99    fn prettier_plugins(&self) -> &[&'static str] {
100        &["prettier-plugin-astro"]
101    }
102}
103
104async fn get_cached_server_binary(
105    container_dir: PathBuf,
106    node: &dyn NodeRuntime,
107) -> Option<LanguageServerBinary> {
108    async_maybe!({
109        let mut last_version_dir = None;
110        let mut entries = fs::read_dir(&container_dir).await?;
111        while let Some(entry) = entries.next().await {
112            let entry = entry?;
113            if entry.file_type().await?.is_dir() {
114                last_version_dir = Some(entry.path());
115            }
116        }
117        let last_version_dir = last_version_dir.ok_or_else(|| anyhow!("no cached binary"))?;
118        let server_path = last_version_dir.join(SERVER_PATH);
119        if server_path.exists() {
120            Ok(LanguageServerBinary {
121                path: node.binary_path().await?,
122                env: None,
123                arguments: server_binary_arguments(&server_path),
124            })
125        } else {
126            Err(anyhow!(
127                "missing executable in directory {:?}",
128                last_version_dir
129            ))
130        }
131    })
132    .await
133    .log_err()
134}