1use std::fs;
  2use zed::settings::LspSettings;
  3use zed_extension_api::{self as zed, LanguageServerId, Result, serde_json};
  4
  5struct GlslExtension {
  6    cached_binary_path: Option<String>,
  7}
  8
  9impl GlslExtension {
 10    fn language_server_binary_path(
 11        &mut self,
 12        language_server_id: &LanguageServerId,
 13        worktree: &zed::Worktree,
 14    ) -> Result<String> {
 15        if let Some(path) = worktree.which("glsl_analyzer") {
 16            return Ok(path);
 17        }
 18
 19        if let Some(path) = &self.cached_binary_path
 20            && fs::metadata(path).is_ok_and(|stat| stat.is_file())
 21        {
 22            return Ok(path.clone());
 23        }
 24
 25        zed::set_language_server_installation_status(
 26            language_server_id,
 27            &zed::LanguageServerInstallationStatus::CheckingForUpdate,
 28        );
 29        let release = zed::latest_github_release(
 30            "nolanderc/glsl_analyzer",
 31            zed::GithubReleaseOptions {
 32                require_assets: true,
 33                pre_release: false,
 34            },
 35        )?;
 36
 37        let (platform, arch) = zed::current_platform();
 38        let asset_name = format!(
 39            "{arch}-{os}.zip",
 40            arch = match arch {
 41                zed::Architecture::Aarch64 => "aarch64",
 42                zed::Architecture::X86 => "x86",
 43                zed::Architecture::X8664 => "x86_64",
 44            },
 45            os = match platform {
 46                zed::Os::Mac => "macos",
 47                zed::Os::Linux => "linux-musl",
 48                zed::Os::Windows => "windows",
 49            }
 50        );
 51
 52        let asset = release
 53            .assets
 54            .iter()
 55            .find(|asset| asset.name == asset_name)
 56            .ok_or_else(|| format!("no asset found matching {:?}", asset_name))?;
 57
 58        let version_dir = format!("glsl_analyzer-{}", release.version);
 59        fs::create_dir_all(&version_dir)
 60            .map_err(|err| format!("failed to create directory '{version_dir}': {err}"))?;
 61        let binary_path = format!("{version_dir}/bin/glsl_analyzer");
 62
 63        if !fs::metadata(&binary_path).is_ok_and(|stat| stat.is_file()) {
 64            zed::set_language_server_installation_status(
 65                language_server_id,
 66                &zed::LanguageServerInstallationStatus::Downloading,
 67            );
 68
 69            zed::download_file(
 70                &asset.download_url,
 71                &version_dir,
 72                match platform {
 73                    zed::Os::Mac | zed::Os::Linux => zed::DownloadedFileType::Zip,
 74                    zed::Os::Windows => zed::DownloadedFileType::Zip,
 75                },
 76            )
 77            .map_err(|e| format!("failed to download file: {e}"))?;
 78
 79            zed::make_file_executable(&binary_path)?;
 80
 81            let entries =
 82                fs::read_dir(".").map_err(|e| format!("failed to list working directory {e}"))?;
 83            for entry in entries {
 84                let entry = entry.map_err(|e| format!("failed to load directory entry {e}"))?;
 85                if entry.file_name().to_str() != Some(&version_dir) {
 86                    fs::remove_dir_all(entry.path()).ok();
 87                }
 88            }
 89        }
 90
 91        self.cached_binary_path = Some(binary_path.clone());
 92        Ok(binary_path)
 93    }
 94}
 95
 96impl zed::Extension for GlslExtension {
 97    fn new() -> Self {
 98        Self {
 99            cached_binary_path: None,
100        }
101    }
102
103    fn language_server_command(
104        &mut self,
105        language_server_id: &zed::LanguageServerId,
106        worktree: &zed::Worktree,
107    ) -> Result<zed::Command> {
108        Ok(zed::Command {
109            command: self.language_server_binary_path(language_server_id, worktree)?,
110            args: vec![],
111            env: Default::default(),
112        })
113    }
114
115    fn language_server_workspace_configuration(
116        &mut self,
117        _language_server_id: &zed::LanguageServerId,
118        worktree: &zed::Worktree,
119    ) -> Result<Option<serde_json::Value>> {
120        let settings = LspSettings::for_worktree("glsl_analyzer", worktree)
121            .ok()
122            .and_then(|lsp_settings| lsp_settings.settings)
123            .unwrap_or_default();
124
125        Ok(Some(serde_json::json!({
126            "glsl_analyzer": settings
127        })))
128    }
129}
130
131zed::register_extension!(GlslExtension);