Merge pull request 'debounce' (#16) from claude/suspicious-wilson into master

Reviewed-on: #16

src/components/ReportForm.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import { useSession, signIn, signOut } from "next-auth/react";
-import { useState, useEffect } from "react";
+import { useState, useEffect, useRef } from "react";
 import { Plus, Trash2, Send, Save, CheckCircle, Clock, Calendar, User as UserIcon, Link as LinkIcon, LogOut, ShieldCheck, ClipboardList } from "lucide-react";
 import AdminDashboard from "./AdminDashboard";
 
@@ -14,6 +14,8 @@ export default function ReportForm() {
   const [completedTasks, setCompletedTasks] = useState<any[]>([]);
   const [saving, setSaving] = useState(false);
   const [view, setView] = useState<"REPORT" | "ADMIN">("REPORT");
+  const debounceTimers = useRef<Record<string, ReturnType<typeof setTimeout>>>({});
+  const pendingUpdates = useRef<Record<string, any>>({});
 
   useEffect(() => {
     if (status === "authenticated") {
@@ -89,21 +91,33 @@ export default function ReportForm() {
     }
   };
 
-  const updateTask = async (id: string, updates: any) => {
+  const updateTask = (id: string, updates: any) => {
+    // Update local state immediately so the UI stays responsive
+    if (updates.type === 'PLANNED') {
+      setPlannedTasks(prev => prev.map(t => t.id === id ? { ...t, ...updates } : t));
+    } else {
+      setCompletedTasks(prev => prev.map(t => t.id === id ? { ...t, ...updates } : t));
+    }
+
+    // Accumulate all field changes for this task so a single request carries everything
+    pendingUpdates.current[id] = { ...pendingUpdates.current[id], ...updates };
+
+    // Reset the debounce timer — the API call fires 600 ms after the last keystroke
+    clearTimeout(debounceTimers.current[id]);
+    debounceTimers.current[id] = setTimeout(async () => {
+      const payload = pendingUpdates.current[id];
+      delete pendingUpdates.current[id];
+      delete debounceTimers.current[id];
       try {
         await fetch("/api/tasks", {
           method: "PATCH",
           headers: { "Content-Type": "application/json" },
-          body: JSON.stringify({ id, ...updates }),
+          body: JSON.stringify({ id, ...payload }),
         });
-        if (updates.type === 'PLANNED') {
-            setPlannedTasks(plannedTasks.map(t => t.id === id ? { ...t, ...updates } : t));
-        } else {
-            setCompletedTasks(completedTasks.map(t => t.id === id ? { ...t, ...updates } : t));
-        }
       } catch (error) {
         console.error("Failed to update task");
       }
+    }, 600);
   };
 
   const deleteTask = async (id: string, type: string) => {