From a7f0777fedc991eff4d2179ac41510068ad32e19 Mon Sep 17 00:00:00 2001
From: Luca Micieli <luca.micieli@xtreamers.io>
Date: Fri, 22 Dec 2023 13:21:51 +0100
Subject: [PATCH] fix: add base terminal guessing function to launch metro

---
 packages/cli/src/application/metroManager.ts | 65 ++++++++++++++++++--
 1 file changed, 59 insertions(+), 6 deletions(-)

diff --git a/packages/cli/src/application/metroManager.ts b/packages/cli/src/application/metroManager.ts
index 39d1fd3..4b9737a 100644
--- a/packages/cli/src/application/metroManager.ts
+++ b/packages/cli/src/application/metroManager.ts
@@ -4,13 +4,66 @@ import path from 'path';
 import { getProjectRootDir, sleep } from './utils';
 import { getDefaultUserTerminal, startServerInNewWindow } from '@react-native-community/cli-tools';
 
+
+import { execSync } from 'child_process';
+
+function getTerminalPath(): string {
+  try {
+    if (process.platform === 'win32') {
+      // Default to PowerShell on Windows
+      let defaultTerminal = 'C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe';
+
+      try {
+        // Attempt to identify if it's Command Prompt
+        const parentProcessId = process.ppid;
+        const query = `wmic process where (ProcessId=${parentProcessId}) get CommandLine`;
+        const parentProcessCmdLine = execSync(query).toString();
+
+        if (parentProcessCmdLine.includes('cmd.exe')) {
+          defaultTerminal = 'C:\\Windows\\System32\\cmd.exe';
+        }
+      } catch (error) {
+        console.warn('Could not determine specific terminal, defaulting to PowerShell.');
+      }
+
+      return defaultTerminal;
+    } else {
+      // Default to /bin/bash or /bin/sh on Unix-like systems
+      let defaultTerminal = '/bin/bash';
+
+      try {
+        const ppid = process.ppid;
+        const command = `ps -o comm= -p ${ppid}`;
+        const terminalPath = execSync(command).toString().trim();
+
+        if (terminalPath) {
+          defaultTerminal = terminalPath;
+        }
+      } catch (error) {
+        console.warn('Could not determine specific terminal, defaulting to /bin/bash.');
+      }
+
+      return defaultTerminal;
+    }
+  } catch (error) {
+    console.error('Error obtaining terminal path:', error);
+    return 'Error';
+  }
+}
 export async function startMetro(resetCache = false, port = '8081') {
-  startServerInNewWindow(
-    Number(port),
-    getProjectRootDir(),
-    path.join(getProjectRootDir(), 'node_modules/react-native'),
-    getDefaultUserTerminal()!,
-  );
+  try {
+    console.log('getDefaultUserTerminal()', getTerminalPath());
+    startServerInNewWindow(
+      Number(port),
+      getProjectRootDir(),
+      path.join(getProjectRootDir(), 'node_modules/react-native'),
+      getTerminalPath(),
+    );
+  }catch (e){
+    console.error(e);
+    throw e;
+  }
+
 
   while (!(await checkIsMetroRunning(port))) {
     await sleep(100);