1use std::{env, fs};
 2
 3use zed_extension_api::{self as zed, LanguageServerId, Result};
 4
 5const SERVER_PATH: &str = "node_modules/intelephense/lib/intelephense.js";
 6const PACKAGE_NAME: &str = "intelephense";
 7
 8pub struct Intelephense {
 9    did_find_server: bool,
10}
11
12impl Intelephense {
13    pub const LANGUAGE_SERVER_ID: &'static str = "intelephense";
14
15    pub fn new() -> Self {
16        Self {
17            did_find_server: false,
18        }
19    }
20
21    pub fn language_server_command(
22        &mut self,
23        language_server_id: &LanguageServerId,
24        worktree: &zed::Worktree,
25    ) -> Result<zed::Command> {
26        if let Some(path) = worktree.which("intelephense") {
27            return Ok(zed::Command {
28                command: path,
29                args: vec!["--stdio".to_string()],
30                env: Default::default(),
31            });
32        }
33
34        let server_path = self.server_script_path(language_server_id)?;
35        Ok(zed::Command {
36            command: zed::node_binary_path()?,
37            args: vec![
38                env::current_dir()
39                    .unwrap()
40                    .join(&server_path)
41                    .to_string_lossy()
42                    .to_string(),
43                "--stdio".to_string(),
44            ],
45            env: Default::default(),
46        })
47    }
48
49    fn server_exists(&self) -> bool {
50        fs::metadata(SERVER_PATH).map_or(false, |stat| stat.is_file())
51    }
52
53    fn server_script_path(&mut self, language_server_id: &LanguageServerId) -> Result<String> {
54        let server_exists = self.server_exists();
55        if self.did_find_server && server_exists {
56            return Ok(SERVER_PATH.to_string());
57        }
58
59        zed::set_language_server_installation_status(
60            &language_server_id,
61            &zed::LanguageServerInstallationStatus::CheckingForUpdate,
62        );
63        let version = zed::npm_package_latest_version(PACKAGE_NAME)?;
64
65        if !server_exists
66            || zed::npm_package_installed_version(PACKAGE_NAME)?.as_ref() != Some(&version)
67        {
68            zed::set_language_server_installation_status(
69                &language_server_id,
70                &zed::LanguageServerInstallationStatus::Downloading,
71            );
72            let result = zed::npm_install_package(PACKAGE_NAME, &version);
73            match result {
74                Ok(()) => {
75                    if !self.server_exists() {
76                        Err(format!(
77                            "installed package '{PACKAGE_NAME}' did not contain expected path '{SERVER_PATH}'",
78                        ))?;
79                    }
80                }
81                Err(error) => {
82                    if !self.server_exists() {
83                        Err(error)?;
84                    }
85                }
86            }
87        }
88
89        self.did_find_server = true;
90        Ok(SERVER_PATH.to_string())
91    }
92}