use std::{env, fs}; use zed::{CodeLabel, CodeLabelSpan};use zed_extension_api::settings::LspSettings;use zed_extension_api::{self as zed, serde_json, LanguageServerId, Result}; const SERVER_PATH: &str = "node_modules/intelephense/lib/intelephense.js";const PACKAGE_NAME: &str = "intelephense"; pub struct Intelephense {    did_find_server: bool,} impl Intelephense {    pub const LANGUAGE_SERVER_ID: &'static str = "intelephense";     pub fn new() -> Self {        Self {            did_find_server: false,        }    }     pub fn language_server_command(        &mut self,        language_server_id: &LanguageServerId,        worktree: &zed::Worktree,    ) -> Result<zed::Command> {        if let Some(path) = worktree.which("intelephense") {            return Ok(zed::Command {                command: path,                args: vec!["--stdio".to_string()],                env: Default::default(),            });        }         let server_path = self.server_script_path(language_server_id)?;        Ok(zed::Command {            command: zed::node_binary_path()?,            args: vec![                env::current_dir()                    .unwrap()                    .join(&server_path)                    .to_string_lossy()                    .to_string(),                "--stdio".to_string(),            ],            env: Default::default(),        })    }     fn server_exists(&self) -> bool {        fs::metadata(SERVER_PATH).map_or(false, |stat| stat.is_file())    }     fn server_script_path(&mut self, language_server_id: &LanguageServerId) -> Result<String> {        let server_exists = self.server_exists();        if self.did_find_server && server_exists {            return Ok(SERVER_PATH.to_string());        }         zed::set_language_server_installation_status(            language_server_id,            &zed::LanguageServerInstallationStatus::CheckingForUpdate,        );        let version = zed::npm_package_latest_version(PACKAGE_NAME)?;         if !server_exists            || zed::npm_package_installed_version(PACKAGE_NAME)?.as_ref() != Some(&version)        {            zed::set_language_server_installation_status(                language_server_id,                &zed::LanguageServerInstallationStatus::Downloading,            );            let result = zed::npm_install_package(PACKAGE_NAME, &version);            match result {                Ok(()) => {                    if !self.server_exists() {                        Err(format!(                            "installed package '{PACKAGE_NAME}' did not contain expected path '{SERVER_PATH}'",                        ))?;                    }                }                Err(error) => {                    if !self.server_exists() {                        Err(error)?;                    }                }            }        }         self.did_find_server = true;        Ok(SERVER_PATH.to_string())    }     pub fn language_server_workspace_configuration(        &mut self,        worktree: &zed::Worktree,    ) -> Result<Option<serde_json::Value>> {        let settings = LspSettings::for_worktree("intelephense", worktree)            .ok()            .and_then(|lsp_settings| lsp_settings.settings.clone())            .unwrap_or_default();         Ok(Some(serde_json::json!({            "intelephense": settings        })))    }     pub fn label_for_completion(&self, completion: zed::lsp::Completion) -> Option<CodeLabel> {        let label = &completion.label;         match completion.kind? {            zed::lsp::CompletionKind::Method => {                // __construct method doesn't have a detail                if let Some(ref detail) = completion.detail {                    if detail.is_empty() {                        return Some(CodeLabel {                            spans: vec![                                CodeLabelSpan::literal(label, Some("function.method".to_string())),                                CodeLabelSpan::literal("()", None),                            ],                            filter_range: (0..label.len()).into(),                            code: completion.label,                        });                    }                }                 let mut parts = completion.detail.as_ref()?.split(":");                // E.g., `foo(string $var)`                let name_and_params = parts.next()?;                let return_type = parts.next()?.trim();                 let (_, params) = name_and_params.split_once("(")?;                let params = params.trim_end_matches(")");                 Some(CodeLabel {                    spans: vec![                        CodeLabelSpan::literal(label, Some("function.method".to_string())),                        CodeLabelSpan::literal("(", None),                        CodeLabelSpan::literal(params, Some("comment".to_string())),                        CodeLabelSpan::literal("): ", None),                        CodeLabelSpan::literal(return_type, Some("type".to_string())),                    ],                    filter_range: (0..label.len()).into(),                    code: completion.label,                })            }            zed::lsp::CompletionKind::Constant | zed::lsp::CompletionKind::EnumMember => {                if let Some(ref detail) = completion.detail {                    if !detail.is_empty() {                        return Some(CodeLabel {                            spans: vec![                                CodeLabelSpan::literal(label, Some("constant".to_string())),                                CodeLabelSpan::literal(" ", None),                                CodeLabelSpan::literal(detail, Some("comment".to_string())),                            ],                            filter_range: (0..label.len()).into(),                            code: completion.label,                        });                    }                }                 Some(CodeLabel {                    spans: vec![CodeLabelSpan::literal(label, Some("constant".to_string()))],                    filter_range: (0..label.len()).into(),                    code: completion.label,                })            }            zed::lsp::CompletionKind::Property => {                let return_type = completion.detail?;                Some(CodeLabel {                    spans: vec![                        CodeLabelSpan::literal(label, Some("attribute".to_string())),                        CodeLabelSpan::literal(": ", None),                        CodeLabelSpan::literal(return_type, Some("type".to_string())),                    ],                    filter_range: (0..label.len()).into(),                    code: completion.label,                })            }            zed::lsp::CompletionKind::Variable => {                // See https://www.php.net/manual/en/reserved.variables.php                const SYSTEM_VAR_NAMES: &[&str] =                    &["argc", "argv", "php_errormsg", "http_response_header"];                 let var_name = completion.label.trim_start_matches("$");                let is_uppercase = var_name                    .chars()                    .filter(|c| c.is_alphabetic())                    .all(|c| c.is_uppercase());                let is_system_constant = var_name.starts_with("_");                let is_reserved = SYSTEM_VAR_NAMES.contains(&var_name);                 let highlight = if is_uppercase || is_system_constant || is_reserved {                    Some("comment".to_string())                } else {                    None                };                 Some(CodeLabel {                    spans: vec![CodeLabelSpan::literal(label, highlight)],                    filter_range: (0..label.len()).into(),                    code: completion.label,                })            }            _ => None,        }    }}