From 00786dcd790c0b8601457f57d07453746cb44c19 Mon Sep 17 00:00:00 2001
From: jimbojw <wilson.jim.r@gmail.com>
Date: Wed, 1 Apr 2026 13:28:00 -0400
Subject: [PATCH] build: Detect Java 21 and set JAVA_HOME and PATH based on it
 unless JAVA_HOME is already set

---
 run_locally.sh | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/run_locally.sh b/run_locally.sh
index d28547eca..db7b8921f 100755
--- a/run_locally.sh
+++ b/run_locally.sh
@@ -102,6 +102,19 @@ if [ "$NODE_VERSION" -lt 22 ]; then
 fi
 echo "Node.js version: $(node -v)"
 
+# Ensure Java 21 is available (required by Firebase emulators)
+if [ -z "$JAVA_HOME" ]; then
+    if [ -d "/usr/lib/jvm/java-21-openjdk-amd64" ]; then
+        export JAVA_HOME="/usr/lib/jvm/java-21-openjdk-amd64"
+        echo "Auto-detected JAVA_HOME: $JAVA_HOME"
+    fi
+else
+    echo "Using provided JAVA_HOME: $JAVA_HOME"
+fi
+if [ -n "$JAVA_HOME" ]; then
+    export PATH="$JAVA_HOME/bin:$PATH"
+fi
+
 if [ ! -d "node_modules" ]; then
     echo ""
     echo "node_modules not found."