use anyhow::{anyhow, Result};use async_compression::futures::bufread::GzipDecoder;use async_tar::Archive;use async_trait::async_trait;use collections::HashMap;use gpui::AppContext;use language::{LanguageServerName, LspAdapter, LspAdapterDelegate};use lsp::{CodeActionKind, LanguageServerBinary};use node_runtime::NodeRuntime;use project::project_settings::ProjectSettings;use serde_json::{json, Value};use settings::Settings;use smol::{fs, io::BufReader, stream::StreamExt};use std::{    any::Any,    ffi::OsString,    path::{Path, PathBuf},    sync::Arc,};use util::{    async_maybe,    fs::remove_matching,    github::{latest_github_release, GitHubLspBinaryVersion},    ResultExt,}; fn typescript_server_binary_arguments(server_path: &Path) -> Vec<OsString> {    vec![server_path.into(), "--stdio".into()]} fn eslint_server_binary_arguments(server_path: &Path) -> Vec<OsString> {    vec![server_path.into(), "--stdio".into()]} pub struct TypeScriptLspAdapter {    node: Arc<dyn NodeRuntime>,} impl TypeScriptLspAdapter {    const OLD_SERVER_PATH: &'static str = "node_modules/typescript-language-server/lib/cli.js";    const NEW_SERVER_PATH: &'static str = "node_modules/typescript-language-server/lib/cli.mjs";     pub fn new(node: Arc<dyn NodeRuntime>) -> Self {        TypeScriptLspAdapter { node }    }} struct TypeScriptVersions {    typescript_version: String,    server_version: String,} #[async_trait]impl LspAdapter for TypeScriptLspAdapter {    fn name(&self) -> LanguageServerName {        LanguageServerName("typescript-language-server".into())    }     async fn fetch_latest_server_version(        &self,        _: &dyn LspAdapterDelegate,    ) -> Result<Box<dyn 'static + Send + Any>> {        Ok(Box::new(TypeScriptVersions {            typescript_version: self.node.npm_package_latest_version("typescript").await?,            server_version: self                .node                .npm_package_latest_version("typescript-language-server")                .await?,        }) as Box<_>)    }     async fn fetch_server_binary(        &self,        version: Box<dyn 'static + Send + Any>,        container_dir: PathBuf,        _: &dyn LspAdapterDelegate,    ) -> Result<LanguageServerBinary> {        let version = version.downcast::<TypeScriptVersions>().unwrap();        let server_path = container_dir.join(Self::NEW_SERVER_PATH);         if fs::metadata(&server_path).await.is_err() {            self.node                .npm_install_packages(                    &container_dir,                    &[                        ("typescript", version.typescript_version.as_str()),                        (                            "typescript-language-server",                            version.server_version.as_str(),                        ),                    ],                )                .await?;        }         Ok(LanguageServerBinary {            path: self.node.binary_path().await?,            env: None,            arguments: typescript_server_binary_arguments(&server_path),        })    }     async fn cached_server_binary(        &self,        container_dir: PathBuf,        _: &dyn LspAdapterDelegate,    ) -> Option<LanguageServerBinary> {        get_cached_ts_server_binary(container_dir, &*self.node).await    }     async fn installation_test_binary(        &self,        container_dir: PathBuf,    ) -> Option<LanguageServerBinary> {        get_cached_ts_server_binary(container_dir, &*self.node).await    }     fn code_action_kinds(&self) -> Option<Vec<CodeActionKind>> {        Some(vec![            CodeActionKind::QUICKFIX,            CodeActionKind::REFACTOR,            CodeActionKind::REFACTOR_EXTRACT,            CodeActionKind::SOURCE,        ])    }     async fn label_for_completion(        &self,        item: &lsp::CompletionItem,        language: &Arc<language::Language>,    ) -> Option<language::CodeLabel> {        use lsp::CompletionItemKind as Kind;        let len = item.label.len();        let grammar = language.grammar()?;        let highlight_id = match item.kind? {            Kind::CLASS | Kind::INTERFACE => grammar.highlight_id_for_name("type"),            Kind::CONSTRUCTOR => grammar.highlight_id_for_name("type"),            Kind::CONSTANT => grammar.highlight_id_for_name("constant"),            Kind::FUNCTION | Kind::METHOD => grammar.highlight_id_for_name("function"),            Kind::PROPERTY | Kind::FIELD => grammar.highlight_id_for_name("property"),            _ => None,        }?;         let text = match &item.detail {            Some(detail) => format!("{} {}", item.label, detail),            None => item.label.clone(),        };         Some(language::CodeLabel {            text,            runs: vec![(0..len, highlight_id)],            filter_range: 0..len,        })    }     fn initialization_options(&self) -> Option<serde_json::Value> {        Some(json!({            "provideFormatter": true,            "tsserver": {                "path": "node_modules/typescript/lib",            },            "preferences": {                "includeInlayParameterNameHints": "all",                "includeInlayParameterNameHintsWhenArgumentMatchesName": true,                "includeInlayFunctionParameterTypeHints": true,                "includeInlayVariableTypeHints": true,                "includeInlayVariableTypeHintsWhenTypeMatchesName": true,                "includeInlayPropertyDeclarationTypeHints": true,                "includeInlayFunctionLikeReturnTypeHints": true,                "includeInlayEnumMemberValueHints": true,            }        }))    }     fn language_ids(&self) -> HashMap<String, String> {        HashMap::from_iter([            ("TypeScript".into(), "typescript".into()),            ("JavaScript".into(), "javascript".into()),            ("TSX".into(), "typescriptreact".into()),        ])    }} async fn get_cached_ts_server_binary(    container_dir: PathBuf,    node: &dyn NodeRuntime,) -> Option<LanguageServerBinary> {    async_maybe!({        let old_server_path = container_dir.join(TypeScriptLspAdapter::OLD_SERVER_PATH);        let new_server_path = container_dir.join(TypeScriptLspAdapter::NEW_SERVER_PATH);        if new_server_path.exists() {            Ok(LanguageServerBinary {                path: node.binary_path().await?,                env: None,                arguments: typescript_server_binary_arguments(&new_server_path),            })        } else if old_server_path.exists() {            Ok(LanguageServerBinary {                path: node.binary_path().await?,                env: None,                arguments: typescript_server_binary_arguments(&old_server_path),            })        } else {            Err(anyhow!(                "missing executable in directory {:?}",                container_dir            ))        }    })    .await    .log_err()} pub struct EsLintLspAdapter {    node: Arc<dyn NodeRuntime>,} impl EsLintLspAdapter {    const SERVER_PATH: &'static str = "vscode-eslint/server/out/eslintServer.js";    const SERVER_NAME: &'static str = "eslint";     pub fn new(node: Arc<dyn NodeRuntime>) -> Self {        EsLintLspAdapter { node }    }} #[async_trait]impl LspAdapter for EsLintLspAdapter {    fn workspace_configuration(&self, workspace_root: &Path, cx: &mut AppContext) -> Value {        let eslint_user_settings = ProjectSettings::get_global(cx)            .lsp            .get(Self::SERVER_NAME)            .and_then(|s| s.settings.clone())            .unwrap_or_default();         let mut code_action_on_save = json!({            // We enable this, but without also configuring `code_actions_on_format`            // in the Zed configuration, it doesn't have an effect.            "enable": true,        });         if let Some(code_action_settings) = eslint_user_settings            .get("codeActionOnSave")            .and_then(|settings| settings.as_object())        {            if let Some(enable) = code_action_settings.get("enable") {                code_action_on_save["enable"] = enable.clone();            }            if let Some(mode) = code_action_settings.get("mode") {                code_action_on_save["mode"] = mode.clone();            }            if let Some(rules) = code_action_settings.get("rules") {                code_action_on_save["rules"] = rules.clone();            }        }         json!({            "": {                "validate": "on",                "rulesCustomizations": [],                "run": "onType",                "nodePath": null,                "workingDirectory": {"mode": "auto"},                "workspaceFolder": {                    "uri": workspace_root,                    "name": workspace_root.file_name()                        .unwrap_or_else(|| workspace_root.as_os_str()),                },                "problems": {},                "codeActionOnSave": code_action_on_save,                "experimental": {                    "useFlatConfig": workspace_root.join("eslint.config.js").is_file(),                },            }        })    }     fn name(&self) -> LanguageServerName {        LanguageServerName(Self::SERVER_NAME.into())    }     async fn fetch_latest_server_version(        &self,        delegate: &dyn LspAdapterDelegate,    ) -> Result<Box<dyn 'static + Send + Any>> {        // At the time of writing the latest vscode-eslint release was released in 2020 and requires        // special custom LSP protocol extensions be handled to fully initialize. Download the latest        // prerelease instead to sidestep this issue        let release = latest_github_release(            "microsoft/vscode-eslint",            false,            true,            delegate.http_client(),        )        .await?;        Ok(Box::new(GitHubLspBinaryVersion {            name: release.tag_name,            url: release.tarball_url,        }))    }     async fn fetch_server_binary(        &self,        version: Box<dyn 'static + Send + Any>,        container_dir: PathBuf,        delegate: &dyn LspAdapterDelegate,    ) -> Result<LanguageServerBinary> {        let version = version.downcast::<GitHubLspBinaryVersion>().unwrap();        let destination_path = container_dir.join(format!("vscode-eslint-{}", version.name));        let server_path = destination_path.join(Self::SERVER_PATH);         if fs::metadata(&server_path).await.is_err() {            remove_matching(&container_dir, |entry| entry != destination_path).await;             let mut response = delegate                .http_client()                .get(&version.url, Default::default(), true)                .await                .map_err(|err| anyhow!("error downloading release: {}", err))?;            let decompressed_bytes = GzipDecoder::new(BufReader::new(response.body_mut()));            let archive = Archive::new(decompressed_bytes);            archive.unpack(&destination_path).await?;             let mut dir = fs::read_dir(&destination_path).await?;            let first = dir.next().await.ok_or(anyhow!("missing first file"))??;            let repo_root = destination_path.join("vscode-eslint");            fs::rename(first.path(), &repo_root).await?;             self.node                .run_npm_subcommand(Some(&repo_root), "install", &[])                .await?;             self.node                .run_npm_subcommand(Some(&repo_root), "run-script", &["compile"])                .await?;        }         Ok(LanguageServerBinary {            path: self.node.binary_path().await?,            env: None,            arguments: eslint_server_binary_arguments(&server_path),        })    }     async fn cached_server_binary(        &self,        container_dir: PathBuf,        _: &dyn LspAdapterDelegate,    ) -> Option<LanguageServerBinary> {        get_cached_eslint_server_binary(container_dir, &*self.node).await    }     async fn installation_test_binary(        &self,        container_dir: PathBuf,    ) -> Option<LanguageServerBinary> {        get_cached_eslint_server_binary(container_dir, &*self.node).await    }     async fn label_for_completion(        &self,        _item: &lsp::CompletionItem,        _language: &Arc<language::Language>,    ) -> Option<language::CodeLabel> {        None    }     fn initialization_options(&self) -> Option<serde_json::Value> {        None    }} async fn get_cached_eslint_server_binary(    container_dir: PathBuf,    node: &dyn NodeRuntime,) -> Option<LanguageServerBinary> {    async_maybe!({        // This is unfortunate but we don't know what the version is to build a path directly        let mut dir = fs::read_dir(&container_dir).await?;        let first = dir.next().await.ok_or(anyhow!("missing first file"))??;        if !first.file_type().await?.is_dir() {            return Err(anyhow!("First entry is not a directory"));        }        let server_path = first.path().join(EsLintLspAdapter::SERVER_PATH);         Ok(LanguageServerBinary {            path: node.binary_path().await?,            env: None,            arguments: eslint_server_binary_arguments(&server_path),        })    })    .await    .log_err()} #[cfg(test)]mod tests {    use gpui::{Context, TestAppContext};    use text::BufferId;    use unindent::Unindent;     #[gpui::test]    async fn test_outline(cx: &mut TestAppContext) {        let language = crate::language("typescript", tree_sitter_typescript::language_typescript());         let text = r#"            function a() {              // local variables are omitted              let a1 = 1;              // all functions are included              async function a2() {}            }            // top-level variables are included            let b: C            function getB() {}            // exported variables are included            export const d = e;        "#        .unindent();         let buffer = cx.new_model(|cx| {            language::Buffer::new(0, BufferId::new(cx.entity_id().as_u64()).unwrap(), text)                .with_language(language, cx)        });        let outline = buffer.update(cx, |buffer, _| buffer.snapshot().outline(None).unwrap());        assert_eq!(            outline                .items                .iter()                .map(|item| (item.text.as_str(), item.depth))                .collect::<Vec<_>>(),            &[                ("function a()", 0),                ("async function a2()", 1),                ("let b", 0),                ("function getB()", 0),                ("const d", 0),            ]        );    }}