"use client";

/**
 * Shared underline section tabs for prompt editor and workflow side panels.
 * Left-aligned flex chips (not equal-width grid); active state is a primary
 * bottom border (not pill Tabs).
 */

import { cn } from "@/lib/utils";

export type SectionAnchorTab = {
  id: string;
  label: string;
};

export function SectionAnchorTabs({
  ariaLabel,
  sections,
  activeSectionId,
  onSelect,
  className,
  contentClassName,
}: {
  ariaLabel: string;
  sections: readonly SectionAnchorTab[];
  activeSectionId: string;
  onSelect: (sectionId: string) => void;
  className?: string;
  /** Optional width/centering wrapper around the tab row (prompt page uses max-w-7xl). */
  contentClassName?: string;
}) {
  if (sections.length === 0) return null;

  const list = (
    <div className="flex min-w-max border-b border-hairline">
      {sections.map((section) => {
        const active = activeSectionId === section.id;

        return (
          <button
            key={section.id}
            type="button"
            aria-current={active ? "location" : undefined}
            onClick={() => onSelect(section.id)}
            className={cn(
              "-mb-px min-w-24 whitespace-nowrap border-b-2 px-3 py-2.5 text-center text-xs transition-colors sm:text-sm",
              active
                ? "border-primary text-foreground"
                : "border-transparent text-muted-foreground hover:bg-surface-strong/50 hover:text-foreground",
            )}
          >
            {section.label}
          </button>
        );
      })}
    </div>
  );

  return (
    <nav
      aria-label={ariaLabel}
      className={cn("scrollbar-subtle shrink-0 overflow-x-auto overscroll-none", className)}
    >
      {contentClassName ? (
        <div className={contentClassName}>{list}</div>
      ) : (
        list
      )}
    </nav>
  );
}