use std::fs;use zed::LanguageServerId;use zed_extension_api::settings::LspSettings;use zed_extension_api::{self as zed, Result}; struct TaploBinary {    path: String,    args: Option<Vec<String>>,} struct TomlExtension {    cached_binary_path: Option<String>,} impl TomlExtension {    fn language_server_binary(        &mut self,        language_server_id: &LanguageServerId,        worktree: &zed::Worktree,    ) -> Result<TaploBinary> {        let binary_settings = LspSettings::for_worktree("taplo", worktree)            .ok()            .and_then(|lsp_settings| lsp_settings.binary);        let binary_args = binary_settings            .as_ref()            .and_then(|binary_settings| binary_settings.arguments.clone());         if let Some(path) = binary_settings.and_then(|binary_settings| binary_settings.path) {            return Ok(TaploBinary {                path,                args: binary_args,            });        }         if let Some(path) = worktree.which("taplo") {            return Ok(TaploBinary {                path,                args: binary_args,            });        }         if let Some(path) = &self.cached_binary_path {            if fs::metadata(path).map_or(false, |stat| stat.is_file()) {                return Ok(TaploBinary {                    path: path.clone(),                    args: binary_args,                });            }        }         zed::set_language_server_installation_status(            language_server_id,            &zed::LanguageServerInstallationStatus::CheckingForUpdate,        );        let release = zed::latest_github_release(            "tamasfe/taplo",            zed::GithubReleaseOptions {                require_assets: true,                pre_release: false,            },        )?;         let (platform, arch) = zed::current_platform();        let asset_name = format!(            "taplo-{os}-{arch}.gz",            arch = match arch {                zed::Architecture::Aarch64 => "aarch64",                zed::Architecture::X86 => "x86",                zed::Architecture::X8664 => "x86_64",            },            os = match platform {                zed::Os::Mac => "darwin",                zed::Os::Linux => "linux",                zed::Os::Windows => "windows",            },        );         let asset = release            .assets            .iter()            .find(|asset| asset.name == asset_name)            .ok_or_else(|| format!("no asset found matching {:?}", asset_name))?;         let version_dir = format!("taplo-{}", release.version);        fs::create_dir_all(&version_dir)            .map_err(|err| format!("failed to create directory '{version_dir}': {err}"))?;         let binary_path = format!(            "{version_dir}/{bin_name}",            bin_name = match platform {                zed::Os::Windows => "taplo.exe",                zed::Os::Mac | zed::Os::Linux => "taplo",            }        );         if !fs::metadata(&binary_path).map_or(false, |stat| stat.is_file()) {            zed::set_language_server_installation_status(                language_server_id,                &zed::LanguageServerInstallationStatus::Downloading,            );             zed::download_file(                &asset.download_url,                &binary_path,                zed::DownloadedFileType::Gzip,            )            .map_err(|err| format!("failed to download file: {err}"))?;             zed::make_file_executable(&binary_path)?;             let entries = fs::read_dir(".")                .map_err(|err| format!("failed to list working directory {err}"))?;            for entry in entries {                let entry = entry.map_err(|err| format!("failed to load directory entry {err}"))?;                if entry.file_name().to_str() != Some(&version_dir) {                    fs::remove_dir_all(entry.path()).ok();                }            }        }         self.cached_binary_path = Some(binary_path.clone());        Ok(TaploBinary {            path: binary_path,            args: binary_args,        })    }} impl zed::Extension for TomlExtension {    fn new() -> Self {        Self {            cached_binary_path: None,        }    }     fn language_server_command(        &mut self,        language_server_id: &LanguageServerId,        worktree: &zed::Worktree,    ) -> Result<zed::Command> {        let taplo_binary = self.language_server_binary(language_server_id, worktree)?;        Ok(zed::Command {            command: taplo_binary.path,            args: taplo_binary                .args                .unwrap_or_else(|| vec!["lsp".to_string(), "stdio".to_string()]),            env: Default::default(),        })    }} zed::register_extension!(TomlExtension);