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/**
* ToastContext.tsx
* Sistema minimalista de Toast Notifications.
*/
import { createContext, useContext, useState, useCallback, type ReactNode } from 'react';
import { createPortal } from 'react-dom';
import styles from './Toast.module.css';
type ToastType = 'info' | 'success' | 'error';
interface ToastData {
id: string;
message: string;
type: ToastType;
}
interface ToastContextValue {
addToast: (message: string, type?: ToastType) => void;
}
const ToastContext = createContext<ToastContextValue | null>(null);
export function ToastProvider({ children }: { children: ReactNode }) {
const [toasts, setToasts] = useState<ToastData[]>([]);
const addToast = useCallback((message: string, type: ToastType = 'info') => {
const id = Math.random().toString(36).substring(2, 9);
setToasts((prev) => [...prev, { id, message, type }]);
// Remove automaticamente após 4 segundos
setTimeout(() => {
setToasts((prev) => prev.filter((t) => t.id !== id));
}, 4000);
}, []);
const removeToast = (id: string) => {
setToasts((prev) => prev.filter((t) => t.id !== id));
};
return (
<ToastContext.Provider value={{ addToast }}>
{children}
{/* Portal renderiza os toasts no final do <body> */}
{createPortal(
<div className={styles.toastContainer}>
{toasts.map((toast) => (
<div key={toast.id} className={`${styles.toast} ${styles[toast.type]}`}>
<span>{toast.message}</span>
<button
className={styles.closeBtn}
onClick={() => removeToast(toast.id)}
aria-label="Fechar"
>
×
</button>
</div>
))}
</div>,
document.body
)}
</ToastContext.Provider>
);
}
export function useToast() {
const ctx = useContext(ToastContext);
if (!ctx) throw new Error('useToast deve ser usado dentro do ToastProvider');
return ctx;
}
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