frontend/src/App.tsx

@@ -24,6 +24,10 @@ import { AuthContextProvider } from "./AuthContext";
 // React router
 import Router from "./Router";
 
+// Toasts
+import Toasts from "./components/Toasts";
+import { ToastContextProvider } from "./ToastContext";
+
 const queryClient = new QueryClient();
 
 const App = () => {
@@ -35,9 +39,12 @@ const App = () => {
             <title>Todo</title>
           </Helmet>
           <ThemeProvider>
+            <ToastContextProvider>
               <Container maxWidth="md">
+                <Toasts />
                 <Router />
               </Container>
+            </ToastContextProvider>
           </ThemeProvider>
         </HelmetProvider>
       </AuthContextProvider>

frontend/src/ToastContext.tsx

@@ -0,0 +1,49 @@
+import { AlertColor } from "@mui/material/Alert";
+
+import React, { createContext, useState } from "react";
+
+export interface IToast {
+  category?: AlertColor;
+  key: number;
+  message: string;
+}
+
+interface IToastContext {
+  addToast: (message: string, category: AlertColor | undefined) => void;
+  setToasts: React.Dispatch<React.SetStateAction<IToast[]>>;
+  toasts: IToast[];
+}
+
+export const ToastContext = createContext<IToastContext>({
+  addToast: () => {},
+  setToasts: () => {},
+  toasts: [],
+});
+
+interface IProps {
+  children?: React.ReactNode;
+}
+
+export const ToastContextProvider = ({ children }: IProps) => {
+  const [toasts, setToasts] = useState<IToast[]>([]);
+
+  const addToast = (
+    message: string,
+    category: AlertColor | undefined = undefined,
+  ) => {
+    setToasts((prev) => [
+      ...prev,
+      {
+        category,
+        key: new Date().getTime(),
+        message,
+      },
+    ]);
+  };
+
+  return (
+    <ToastContext.Provider value={{ addToast, setToasts, toasts }}>
+      {children}
+    </ToastContext.Provider>
+  );
+};

frontend/src/components/Title.tsx

@@ -8,7 +8,7 @@ interface IProps {
 const Title = ({ title }: IProps) => (
   <>
     <Helmet>
-      <title>Tozo | {title}</title>
+      <title>Todo | {title}</title>
     </Helmet>
     <Typography component="h1" variant="h5">
       {title}

frontend/src/components/Toasts.tsx

@@ -0,0 +1,47 @@
+import Alert from "@mui/material/Alert";
+import Snackbar from "@mui/material/Snackbar";
+import React, { useContext, useEffect, useState } from "react";
+
+import { ToastContext, IToast } from "src/ToastContext";
+
+const Toasts = () => {
+  const { toasts, setToasts } = useContext(ToastContext);
+  const [open, setOpen] = useState(false);
+  const [currentToast, setCurrentToast] = useState<IToast | undefined>();
+
+  useEffect(() => {
+    if (!open && toasts.length) {
+      setCurrentToast(toasts[0]);
+      setToasts((prev) => prev.slice(1));
+      setOpen(true);
+    }
+  }, [open, setCurrentToast, setOpen, setToasts, toasts]);
+
+  const onClose = (event?: React.SyntheticEvent | Event, reason?: string) => {
+    if (reason !== "clickaway") {
+      setOpen(false);
+    }
+  };
+
+  return (
+    <Snackbar
+      anchorOrigin={{
+        horizontal: "center",
+        vertical: "top",
+      }}
+      autoHideDuration={6000}
+      key={currentToast?.key}
+      onClose={onClose}
+      open={open}
+      TransitionProps={{
+        onExited: () => setCurrentToast(undefined),
+      }}
+    >
+      <Alert onClose={onClose} severity={currentToast?.category}>
+        {currentToast?.message}
+      </Alert>
+    </Snackbar>
+  );
+};
+
+export default Toasts;