feat: add settings table and backup notification functionality

src/app/api/admin/settings/route.js

@@ -0,0 +1,52 @@
+import { NextResponse } from "next/server";
+import { withAdminAuth } from "@/lib/middleware/auth";
+import db from "@/lib/db";
+
+// GET: Get all settings
+async function getSettingsHandler() {
+	try {
+		const settings = db.prepare("SELECT * FROM settings ORDER BY key").all();
+		return NextResponse.json(settings);
+	} catch (error) {
+		console.error("Error fetching settings:", error);
+		return NextResponse.json(
+			{ error: "Failed to fetch settings" },
+			{ status: 500 }
+		);
+	}
+}
+
+// PUT: Update a setting
+async function updateSettingHandler(request) {
+	try {
+		const { key, value } = await request.json();
+
+		if (!key || value === undefined) {
+			return NextResponse.json(
+				{ error: "Key and value are required" },
+				{ status: 400 }
+			);
+		}
+
+		const updatedBy = request.user.id;
+
+		const stmt = db.prepare(`
+			INSERT OR REPLACE INTO settings (key, value, updated_at, updated_by)
+			VALUES (?, ?, CURRENT_TIMESTAMP, ?)
+		`);
+
+		stmt.run(key, value, updatedBy);
+
+		return NextResponse.json({ success: true });
+	} catch (error) {
+		console.error("Error updating setting:", error);
+		return NextResponse.json(
+			{ error: "Failed to update setting" },
+			{ status: 500 }
+		);
+	}
+}
+
+// Protected routes - require admin authentication
+export const GET = withAdminAuth(getSettingsHandler);
+export const PUT = withAdminAuth(updateSettingHandler);