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export type ToastVariant = "success" | "error" | "info";
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export type ToastItem = { id: string; variant: ToastVariant; message: string; createdAt: number };
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const listeners = new Set<() => void>();
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let items: ToastItem[] = [];
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function emit() {
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  for (const fn of listeners) fn();
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}
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export function subscribe(fn: () => void) {
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  listeners.add(fn);
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  return () => listeners.delete(fn);
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}
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export function snapshot() {
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  return items;
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}
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function push(variant: ToastVariant, message: string) {
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  const id = `${Date.now().toString(36)}-${Math.random().toString(36).slice(2, 7)}`;
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  items = [...items, { id, variant, message, createdAt: Date.now() }];
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  emit();
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  return id;
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}
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export function dismissToast(id: string) {
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  items = items.filter((t) => t.id !== id);
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  emit();
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}
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export const toast = {
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  success: (message: string) => push("success", message),
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  error: (message: string) => push("error", message),
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  info: (message: string) => push("info", message),
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  dismiss: dismissToast,
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};