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

const CODE = "te";

export type TeMeta = BookMeta;
export type TeEssayEntry = { slug: string; title: string; order: number };
export type TeIntroSegment = IntroSegment;
export type TeEssay = Chapter;
export type TeChapter = Chapter;
export type TeSidebarItem = SidebarItem;

export async function getTeMeta() {
  return getBookMeta(CODE);
}
export async function getTeIntroSegments() {
  return getIntroSegments(CODE);
}
export async function getTeIntroSegment(slug: string) {
  return getIntroSegment(CODE, slug);
}
export async function getTeChapter(slug: string) {
  return getChapter(CODE, slug);
}
export async function getTeContent(slug: string) {
  return getContent(CODE, slug);
}
export async function getTeSidebarItems() {
  return getSidebarItems(CODE);
}

export async function getTeEssays(): Promise<TeEssay[]> {
  const items = await getIntroSegments(CODE);
  return items as unknown as TeEssay[];
}

export async function getTeEssay(slug: string): Promise<TeEssay | null> {
  const chapter = await getChapter(CODE, slug);
  if (chapter) return chapter;
  const intro = await getIntroSegment(CODE, slug);
  return intro as unknown as TeEssay | null;
}