feat: remove appwrite and add nextjs backend

frontend/src/utils/loading.util.ts

@@ -0,0 +1,6 @@
+import { createContext, Dispatch, SetStateAction } from "react";
+
+export const GlobalLoadingContext = createContext<{
+  isLoading: boolean;
+  setIsLoading: Dispatch<SetStateAction<boolean>>;
+}>({ isLoading: false, setIsLoading: () => {} });

frontend/src/utils/math/byteStringToHumanSizeString.util.ts

@@ -0,0 +1,11 @@
+export function byteStringToHumanSizeString(bytes: string) {
+  const bytesNumber = parseInt(bytes);
+  const sizes = ["B", "KB", "MB", "GB", "TB"];
+  if (bytesNumber == 0) return "0 Byte";
+  const i = parseInt(
+    Math.floor(Math.log(bytesNumber) / Math.log(1024)).toString()
+  );
+  return (
+    (bytesNumber / Math.pow(1024, i)).toFixed(1).toString() + " " + sizes[i]
+  );
+}

frontend/src/utils/toast.util.tsx

@@ -0,0 +1,27 @@
+import { showNotification } from "@mantine/notifications";
+import { Check, X } from "tabler-icons-react";
+
+const error = (message: string) =>
+  showNotification({
+    icon: <X />,
+    color: "red",
+    radius: "md",
+    title: "Error",
+    
+    message: message,
+  });
+
+const success = (message: string) =>
+  showNotification({
+    icon: <Check />,
+    color: "green",
+    radius: "md",
+    title: "Success",
+    message: message,
+  });
+
+const toast = {
+  error,
+  success,
+};
+export default toast;