/**
 * Data access layer for Rāja-vidyā: The King of Knowledge (RV).
 *
 * Delegates to the generic book data layer which calls the BFF API.
 */

import {
  getBookMeta,
  getIntroSegments,
  getIntroSegment,
  getChapter,
  getContent,
  getSidebarItems,
  type BookMeta,
  type IntroSegment,
  type Chapter,
  type SidebarItem,
} from "@/lib/books";

const CODE = "rv";

// Re-export types with book-specific names for backwards compatibility
export type RvMeta = BookMeta;
export type RvChapterEntry = { number: number; title: string };
export type RvIntroSegment = IntroSegment;
export type RvChapter = Chapter;
export type RvSidebarItem = SidebarItem;

export async function getRvMeta(): Promise<RvMeta | null> {
  return getBookMeta(CODE);
}

export async function getRvIntroSegments(): Promise<RvIntroSegment[]> {
  return getIntroSegments(CODE);
}

export async function getRvIntroSegment(
  slug: string,
): Promise<RvIntroSegment | null> {
  return getIntroSegment(CODE, slug);
}

export async function getRvChapter(
  chapterNum: number,
): Promise<RvChapter | null> {
  return getChapter(CODE, String(chapterNum));
}

export async function getRvContent(
  slug: string,
): Promise<RvChapter | RvIntroSegment | null> {
  return getContent(CODE, slug);
}

export async function getRvSidebarItems(): Promise<RvSidebarItem[]> {
  return getSidebarItems(CODE);
}