From bcf91c9e90318b760224cbe0ab0678abf89049c2 Mon Sep 17 00:00:00 2001
From: slavek-kucera <53339291+slavek-kucera@users.noreply.github.com>
Date: Tue, 29 Aug 2023 14:05:11 +0200
Subject: [PATCH] fix: Auto-select WebAssembly image on platforms without
 native support (fixes eclipse-che4z/che-che4z-lsp-for-hlasm#283)

---
 clients/vscode-hlasmplugin/CHANGELOG.md         |  1 +
 clients/vscode-hlasmplugin/src/serverFactory.ts | 14 +++++++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/clients/vscode-hlasmplugin/CHANGELOG.md b/clients/vscode-hlasmplugin/CHANGELOG.md
index 1c4868769..56484aa65 100644
--- a/clients/vscode-hlasmplugin/CHANGELOG.md
+++ b/clients/vscode-hlasmplugin/CHANGELOG.md
@@ -11,6 +11,7 @@
 - Program to processor group mapping precedence
 - The language server may crash while accessing content of virtual files
 - "Diagnostics suppressed" informational message may be incorrectly generated
+- Auto-select WebAssembly image on platforms without native support
 
 ## [1.9.0](https://github.com/eclipse-che4z/che-che4z-lsp-for-hlasm/compare/1.8.0...1.9.0) (2023-08-03)
 
diff --git a/clients/vscode-hlasmplugin/src/serverFactory.ts b/clients/vscode-hlasmplugin/src/serverFactory.ts
index 8eac474d4..0389d5e8b 100644
--- a/clients/vscode-hlasmplugin/src/serverFactory.ts
+++ b/clients/vscode-hlasmplugin/src/serverFactory.ts
@@ -20,6 +20,13 @@ import { getConfig } from './eventsHandler'
 
 export type ServerVariant = "tcp" | "native" | "wasm";
 
+const supportedNativePlatforms: Readonly<{ [key: string]: string }> = Object.freeze({
+    'win32.x64': 'win32',
+    'linux.x64': 'linux',
+    'darwin.x64': 'darwin',
+    'darwin.arm64': 'darwin',
+});
+
 /**
  * factory to create server options
  * also stores port used for DAP
@@ -32,7 +39,12 @@ export class ServerFactory {
     }
 
     async create(method: ServerVariant): Promise<vscodelc.ServerOptions> {
-        const langServerFolder = process.platform;
+        const langServerFolder = supportedNativePlatforms[process.platform + '.' + process.arch];
+        if (!langServerFolder) {
+            if (method !== 'wasm')
+                console.log('Unsupported platform detected, switching to wasm');
+            method = 'wasm';
+        }
         if (method === 'tcp') {
             const lspPort = await this.getPort();