import * as React from "react";
import { ChevronRight, MoreHorizontal } from "lucide-react";
import { cn } from "../../lib/utils";

const Breadcrumb = React.forwardRef<
  HTMLElement,
  React.ComponentPropsWithoutRef<"nav"> & {
    separator?: React.ReactNode
  }
>(({ ...props }, ref) => <nav ref={ref} aria-label="breadcrumb" {...props} />);
Breadcrumb.displayName = "Breadcrumb";

const BreadcrumbList = React.forwardRef<
  HTMLOListElement,
  React.ComponentPropsWithoutRef<"ol">
>(({ className, ...props }, ref) => (
  <ol
    ref={ref}
    className={cn(
      "flex flex-wrap items-center gap-1.5 break-words text-sm text-muted-foreground sm:gap-2.5",
      className
    )}
    {...props}
  />
));
BreadcrumbList.displayName = "BreadcrumbList";

const BreadcrumbItem = React.forwardRef<
  HTMLLIElement,
  React.ComponentPropsWithoutRef<"li">
>(({ className, ...props }, ref) => (
  <li
    ref={ref}
    className={cn("inline-flex items-center gap-1.5", className)}
    {...props}
  />
));
BreadcrumbItem.displayName = "BreadcrumbItem";

interface BreadcrumbLinkProps extends React.ComponentPropsWithoutRef<"a"> {
  asChild?: boolean;
}

const BreadcrumbLink = React.forwardRef<
  HTMLAnchorElement,
  BreadcrumbLinkProps
>(({ asChild, className, children, ...props }, ref) => {
  if (asChild) {
    if (React.isValidElement(children)) {
      // **KEY CHANGE HERE: Assert the type of children for cloneElement**
      return React.cloneElement(children as React.ReactElement<any>, {
        ref, // The ref from forwardRef
        className: cn(
          "transition-colors hover:text-foreground",
          className,
          (children.props as any).className // Access existing className safely
        ),
        ...props, // Spread any other props to the child
      });
    }
    console.warn("BreadcrumbLink: When `asChild` is true, a single React element child is expected.");
    return null;
  }

  return (
    <a
      ref={ref}
      className={cn("transition-colors hover:text-foreground", className)}
      {...props}
    >
      {children}
    </a>
  );
});
BreadcrumbLink.displayName = "BreadcrumbLink";

const BreadcrumbPage = React.forwardRef<
  HTMLSpanElement,
  React.ComponentPropsWithoutRef<"span">
>(({ className, ...props }, ref) => (
  <span
    ref={ref}
    role="link"
    aria-disabled="true"
    aria-current="page"
    className={cn("font-normal text-foreground", className)}
    {...props}
  />
));
BreadcrumbPage.displayName = "BreadcrumbPage";

const BreadcrumbSeparator = ({
  children,
  className,
  ...props
}: React.ComponentProps<"li">) => (
  <li
    role="presentation"
    aria-hidden="true"
    className={cn("[&>svg]:size-3.5", className)}
    {...props}
  >
    {children ?? <ChevronRight />}
  </li>
);
BreadcrumbSeparator.displayName = "BreadcrumbSeparator";

const BreadcrumbEllipsis = ({
  className,
  ...props
}: React.ComponentProps<"span">) => (
  <span
    role="presentation"
    aria-hidden="true"
    className={cn("flex h-9 w-9 items-center justify-center", className)}
    {...props}
  >
    <MoreHorizontal className="h-4 w-4" />
    <span className="sr-only">More</span>
  </span>
);
BreadcrumbEllipsis.displayName = "BreadcrumbEllipsis";

export {
  Breadcrumb,
  BreadcrumbList,
  BreadcrumbItem,
  BreadcrumbLink,
  BreadcrumbPage,
  BreadcrumbSeparator,
  BreadcrumbEllipsis,
};
