`components/ToastProvider.tsx`

95 lines
'use client';
import { createContext, useContext, useState, useCallback, useRef, type ReactNode } from 'react';

type ToastType = 'success' | 'error' | 'info' | 'warning';

interface Toast {
  id: number;
  message: string;
  type: ToastType;
}

interface ToastContextType {
  addToast: (message: string, type?: ToastType) => void;
}

const ToastContext = createContext<ToastContextType>({ addToast: () => {} });

export function useToast() {
  return useContext(ToastContext);
}

const TYPE_STYLES: Record<ToastType, { bg: string; border: string; text: string }> = {
  success: { bg: 'rgba(34,197,94,0.15)', border: 'rgba(34,197,94,0.4)', text: '#4ade80' },
  error:   { bg: 'rgba(239,68,68,0.15)', border: 'rgba(239,68,68,0.4)', text: '#f87171' },
  info:    { bg: 'rgba(59,130,246,0.15)', border: 'rgba(59,130,246,0.4)', text: '#60a5fa' },
  warning: { bg: 'rgba(245,158,11,0.15)', border: 'rgba(245,158,11,0.4)', text: '#fbbf24' },
};

const ICONS: Record<ToastType, string> = {
  success: '\u2713',
  error: '\u2715',
  warning: '\u26A0',
  info: '\u2139',
};

export function ToastProvider({ children }: { children: ReactNode }) {
  const [toasts, setToasts] = useState<Toast[]>([]);
  const nextId = useRef(0);

  const addToast = useCallback((message: string, type: ToastType = 'success') => {
    const id = ++nextId.current;
    setToasts((prev) => [...prev, { id, message, type }]);
    setTimeout(() => {
      setToasts((prev) => prev.filter((t) => t.id !== id));
    }, 3500);
  }, []);

  return (
    <ToastContext.Provider value={{ addToast }}>
      {children}
      <div style={{
        position: 'fixed',
        bottom: 16,
        right: 16,
        zIndex: 9999,
        display: 'flex',
        flexDirection: 'column',
        gap: 8,
        pointerEvents: 'none',
        maxWidth: 380,
      }}>
        {toasts.map((toast) => {
          const style = TYPE_STYLES[toast.type];
          return (
            <div
              key={toast.id}
              style={{
                padding: '10px 16px',
                borderRadius: 10,
                backgroundColor: style.bg,
                border: `1px solid ${style.border}`,
                color: style.text,
                fontSize: '0.8125rem',
                fontWeight: 500,
                backdropFilter: 'blur(12px)',
                boxShadow: '0 4px 12px rgba(0,0,0,0.3)',
                animation: 'toast-in 0.25s ease-out',
                pointerEvents: 'auto',
                display: 'flex',
                alignItems: 'center',
                gap: 8,
              }}
            >
              <span style={{ fontSize: '1rem', lineHeight: 1 }}>
                {ICONS[toast.type]}
              </span>
              {toast.message}
            </div>
          );
        })}
      </div>
    </ToastContext.Provider>
  );
}