frontend/src/context/ToastContext.jsx

import { createContext, useContext, useState, useCallback } from "react";
import ToastContainer from "../components/Toast.jsx";

const ToastContext = createContext(null);

export function ToastProvider({ children }) {
  const [toasts, setToasts] = useState([]);

  const addToast = useCallback((message, type) => {
    const id = Date.now();
    setToasts((prev) => [...prev, { id, message, type }]);
    setTimeout(() => {
      setToasts((prev) => prev.filter((t) => t.id !== id));
    }, 4000);
  }, []);

  const removeToast = useCallback((id) => {
    setToasts((prev) => prev.filter((t) => t.id !== id));
  }, []);

  const toast = {
    error: (msg) => addToast(msg, "error"),
    success: (msg) => addToast(msg, "success"),
    warn: (msg) => addToast(msg, "warn"),
  };

  return (
    <ToastContext.Provider value={{ toasts, toast }}>
      {children}
      <ToastContainer toasts={toasts} onClose={removeToast} />
    </ToastContext.Provider>
  );
}

export function useToast() {
  const ctx = useContext(ToastContext);
  if (!ctx) throw new Error("useToast must be used within ToastProvider");
  return ctx.toast;
}

export default ToastContext;