add watcher

watch.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+# Function to kill the previous cargo process
+kill_cargo() {
+  if [ -n "$pid" ] && ps -p $pid > /dev/null; then
+    echo "Terminating previous cargo process..."
+    pkill -P $pid
+    kill -TERM $pid 2>/dev/null
+    wait $pid 2>/dev/null
+  fi
+}
+
+# Cleanup on script exit
+trap 'kill_cargo; echo "Monitor stopped."; exit' INT TERM EXIT
+
+echo "Monitoring directory for changes..."
+echo "Press Ctrl+C to exit"
+
+# Initial run
+cargo r &
+pid=$!
+
+# Check if we're on macOS
+if [[ "$(uname)" == "Darwin" ]]; then
+  # Use fswatch for macOS
+  fswatch -o src/ assets/ | while read; do
+    echo -e "\n--- Changes detected, restarting cargo r ---"
+
+    # Kill the previous cargo process
+    kill_cargo
+
+    # Start a new cargo process
+    cargo r &
+    pid=$!
+  done
+else
+  # Use inotifywait for Linux
+  while true; do
+    # Wait for changes in the directory
+    inotifywait -q -e modify,create,delete,move -r src/ assets/ 2>/dev/null
+
+    echo -e "\n--- Changes detected, restarting cargo r ---"
+
+    # Kill the previous cargo process
+    kill_cargo
+
+    # Start a new cargo process
+    cargo r &
+    pid=$!
+  done
+fi
+