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