/**
 * Data access layer for Śrī Brahma-saṁhitā (BS).
 *
 * Delegates to the generic book data layer (BFF API) for prose content,
 * and to lib/api.ts for verse lookups.
 *
 * BS has 62 texts (verses) plus intro segments.
 * Verses are stored with: book "bs", division null, chapter 5, verse = text number.
 */

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

const CODE = "bs";

// ---------------------------------------------------------------------------
// Re-export types with book-specific names for backwards compatibility
// ---------------------------------------------------------------------------

export type BsMeta = BookMeta;
export type BsIntroSegment = IntroSegment;
export type BsChapter = Chapter;
export type BsSidebarItem = SidebarItem;
export type BsVerse = VerseRecord;

// ---------------------------------------------------------------------------
// Data accessors
// ---------------------------------------------------------------------------

export async function getBsMeta() {
  return getBookMeta(CODE);
}
export async function getBsIntroSegments() {
  return getIntroSegments(CODE);
}
export async function getBsIntroSegment(slug: string) {
  return getIntroSegment(CODE, slug);
}

export async function getBsVerse(slug: string): Promise<BsVerse | null> {
  const num = parseInt(slug, 10);
  if (isNaN(num)) return null;
  return getSingleVerse(CODE, null, 5, num);
}

export async function getBsContent(
  slug: string,
): Promise<BsVerse | BsIntroSegment | BsChapter | null> {
  // Try as verse first (numeric slug)
  if (/^\d+$/.test(slug)) {
    const verse = await getBsVerse(slug);
    if (verse) return verse;
  }
  // Fall back to prose content (intro segments, etc.)
  return getContent(CODE, slug);
}
export async function getBsSidebarItems() {
  return getSidebarItems(CODE);
}