⚡️ feat: implement toast contexts

packages/frontend/src/components/shared/Toast/ToastProvider.tsx

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+import React from 'react';
+import {
+  Provider,
+  Viewport,
+  type ToastProviderProps,
+} from '@radix-ui/react-toast';
+
+export const ToastProvider = ({ children, ...props }: ToastProviderProps) => {
+  return (
+    <Provider swipeDirection="down" {...props}>
+      {children}
+      <Viewport className="fixed inset-x-0 bottom-0 px-4 py-10" />
+    </Provider>
+  );
+};

packages/frontend/src/components/shared/Toast/Toaster.tsx

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+import React, { ComponentPropsWithoutRef, useMemo } from 'react';
+import { Provider, Viewport } from '@radix-ui/react-toast';
+import { SimpleToast, SimpleToastProps } from './SimpleToast';
+import { useToast } from './useToast';
+
+interface ToasterProps extends ComponentPropsWithoutRef<'div'> {}
+
+export const Toaster = ({}: ToasterProps) => {
+  const { toasts } = useToast();
+
+  const renderToasts = useMemo(
+    () =>
+      toasts.map(({ id, ...props }) => (
+        <SimpleToast key={id} {...(props as SimpleToastProps)} />
+      )),
+    [toasts],
+  );
+
+  return (
+    <Provider>
+      {renderToasts}
+      <Viewport className="z-toast fixed inset-x-0 bottom-0 mx-auto w-fit px-4 pb-10" />
+    </Provider>
+  );
+};

packages/frontend/src/components/shared/Toast/useToast.tsx

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+// Inspired by react-hot-toast library
+import React from 'react';
+import { type ToastProps } from '@radix-ui/react-toast';
+
+const TOAST_LIMIT = 3;
+const TOAST_REMOVE_DELAY_DEFAULT = 7000;
+
+type ToasterToast = ToastProps & {
+  id: string;
+};
+
+const actionTypes = {
+  ADD_TOAST: 'ADD_TOAST',
+  UPDATE_TOAST: 'UPDATE_TOAST',
+  DISMISS_TOAST: 'DISMISS_TOAST',
+  REMOVE_TOAST: 'REMOVE_TOAST',
+} as const;
+
+let count = 0;
+
+const genId = () => {
+  count = (count + 1) % Number.MAX_VALUE;
+  return count.toString();
+};
+
+type ActionType = typeof actionTypes;
+
+type Action =
+  | {
+      type: ActionType['ADD_TOAST'];
+      toast: ToasterToast;
+    }
+  | {
+      type: ActionType['UPDATE_TOAST'];
+      toast: Partial<ToasterToast>;
+    }
+  | {
+      type: ActionType['DISMISS_TOAST'];
+      toastId?: ToasterToast['id'];
+      duration?: ToasterToast['duration'];
+    }
+  | {
+      type: ActionType['REMOVE_TOAST'];
+      toastId?: ToasterToast['id'];
+    };
+
+interface State {
+  toasts: ToasterToast[];
+}
+
+const toastTimeouts = new Map<string, ReturnType<typeof setTimeout>>();
+
+const addToRemoveQueue = (toastId: string, duration: number) => {
+  if (toastTimeouts.has(toastId)) {
+    return;
+  }
+
+  const timeout = setTimeout(() => {
+    toastTimeouts.delete(toastId);
+    dispatch({
+      type: 'REMOVE_TOAST',
+      toastId: toastId,
+    });
+  }, duration ?? TOAST_REMOVE_DELAY_DEFAULT);
+
+  toastTimeouts.set(toastId, timeout);
+};
+
+export const reducer = (state: State, action: Action): State => {
+  switch (action.type) {
+    case 'ADD_TOAST':
+      return {
+        ...state,
+        toasts: [action.toast, ...state.toasts].slice(0, TOAST_LIMIT),
+      };
+
+    case 'UPDATE_TOAST':
+      return {
+        ...state,
+        toasts: state.toasts.map((t) =>
+          t.id === action.toast.id
+            ? ({ ...t, ...action.toast } as ToasterToast)
+            : t,
+        ),
+      };
+
+    case 'DISMISS_TOAST': {
+      const { toastId, duration = TOAST_REMOVE_DELAY_DEFAULT } = action;
+
+      // ! Side effects ! - This could be extracted into a dismissToast() action,
+      // but I'll keep it here for simplicity
+      if (toastId) {
+        addToRemoveQueue(toastId, duration);
+      } else {
+        state.toasts.forEach((_toast) => {
+          addToRemoveQueue(_toast.id, duration);
+        });
+      }
+
+      return {
+        ...state,
+        toasts: state.toasts.map((t) =>
+          t.id === toastId || toastId === undefined
+            ? {
+                ...t,
+                open: false,
+              }
+            : t,
+        ),
+      };
+    }
+    case 'REMOVE_TOAST':
+      if (action.toastId === undefined) {
+        return {
+          ...state,
+          toasts: [],
+        };
+      }
+      return {
+        ...state,
+        toasts: state.toasts.filter((t) => t.id !== action.toastId),
+      };
+  }
+};
+
+const listeners: Array<(_state: State) => void> = [];
+
+let memoryState: State = { toasts: [] };
+
+const dispatch = (action: Action) => {
+  memoryState = reducer(memoryState, action);
+  listeners.forEach((listener) => {
+    listener(memoryState);
+  });
+};
+
+const toast = (props: ToasterToast) => {
+  if (!props.duration) {
+    props.duration = 20000;
+  }
+  const id = genId();
+
+  const update = (_props: ToasterToast) =>
+    dispatch({
+      type: 'UPDATE_TOAST',
+      toast: { ..._props, id },
+    });
+  const dismiss = () =>
+    dispatch({ type: 'DISMISS_TOAST', toastId: id, duration: props.duration });
+
+  dispatch({
+    type: 'ADD_TOAST',
+    toast: {
+      ...props,
+      id,
+      open: true,
+      onOpenChange: (open: boolean) => {
+        if (!open) dismiss();
+      },
+    },
+  });
+
+  return {
+    id: id,
+    dismiss,
+    update,
+  };
+};
+
+const useToast = () => {
+  const [state, setState] = React.useState<State>(memoryState);
+
+  React.useEffect(() => {
+    listeners.push(setState);
+    return () => {
+      const index = listeners.indexOf(setState);
+      if (index > -1) {
+        listeners.splice(index, 1);
+      }
+    };
+  }, [state]);
+
+  return {
+    ...state,
+    toast,
+    dismiss: (toastId?: string) => dispatch({ type: 'DISMISS_TOAST', toastId }),
+  };
+};
+
+export { toast, useToast };