358 lines
9.2 KiB
TypeScript
358 lines
9.2 KiB
TypeScript
/**
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* Data access layer for Śrī Brahma-saṁhitā (BS).
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*
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* Reads from MongoDB via Prisma.
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* BS has BOTH verses (in the `verses` collection)
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* AND prose intro segments (in the `prose_chapters` collection).
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*
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* Verses were seeded with:
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* - book: "bs", division: null
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* - chapter = text number (1-62)
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* - verse = always 1
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*
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* Intro segments were seeded with:
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* - book: "bs", volume: 0, type: "intro-segment"
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* - slugs like "intro-introduction", "intro-foreword"
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*/
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import { prisma } from "@/lib/db";
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import type { JsonValue } from "@prisma/client/runtime/library";
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// ---------------------------------------------------------------------------
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// Constants
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// ---------------------------------------------------------------------------
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const BOOK = "bs";
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const NO_VOLUME = 0;
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// ---------------------------------------------------------------------------
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// Text title lookup
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// ---------------------------------------------------------------------------
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const TEXT_TITLES: Record<number, string> = {
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1: "Text 1",
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2: "Text 2",
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3: "Text 3",
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4: "Text 4",
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5: "Text 5",
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6: "Text 6",
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7: "Text 7",
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8: "Text 8",
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9: "Text 9",
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10: "Text 10",
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11: "Text 11",
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12: "Text 12",
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13: "Text 13",
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14: "Text 14",
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15: "Text 15",
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16: "Text 16",
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17: "Text 17",
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18: "Text 18",
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19: "Text 19",
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20: "Text 20",
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21: "Text 21",
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22: "Text 22",
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23: "Text 23",
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24: "Text 24",
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25: "Text 25",
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26: "Text 26",
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27: "Text 27",
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28: "Text 28",
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29: "Text 29",
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30: "Text 30",
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31: "Text 31",
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32: "Text 32",
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33: "Text 33",
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34: "Text 34",
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35: "Text 35",
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36: "Text 36",
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37: "Text 37",
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38: "Text 38",
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39: "Text 39",
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40: "Text 40",
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41: "Text 41",
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42: "Text 42",
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43: "Text 43",
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44: "Text 44",
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45: "Text 45",
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46: "Text 46",
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47: "Text 47",
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48: "Text 48",
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49: "Text 49",
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50: "Text 50",
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51: "Text 51",
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52: "Text 52",
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53: "Text 53",
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54: "Text 54",
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55: "Text 55",
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56: "Text 56",
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57: "Text 57",
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58: "Text 58",
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59: "Text 59",
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60: "Text 60",
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61: "Text 61",
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62: "Text 62",
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};
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// ---------------------------------------------------------------------------
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// Types
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// ---------------------------------------------------------------------------
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export type BsMeta = {
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book: string;
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title: string;
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author: string;
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year: number;
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description: string;
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totalTexts: number;
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texts: BsTextEntry[];
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};
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export type BsTextEntry = {
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number: number;
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title: string;
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slug: string;
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};
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export type BsIntroSegment = {
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slug: string;
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title: string;
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type: string;
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book: string;
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order: number;
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paragraphs: string[];
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};
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export type BsVerse = {
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book: string;
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book_title: string;
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text: number; // 1-62
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title: string;
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reference: string;
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devanagari: string;
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transliteration: string;
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synonyms: { word: string; meanings: string[] }[];
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translation: string;
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purport: string[];
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};
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/** Union type used in sidebar / table-of-contents navigation. */
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export type BsSidebarItem = {
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/** URL-safe slug: "intro-introduction", "intro-foreword", "1" … "62" */
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slug: string;
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/** Human-readable label for the sidebar */
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label: string;
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/** "intro-segment" | "verse" */
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type: string;
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/** Text number for verses, or null for intro segments */
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text: number | null;
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};
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// ---------------------------------------------------------------------------
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// HTML sanitisation (mirrors lib/iso.ts)
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// ---------------------------------------------------------------------------
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function sanitizeHtml(html: string): string {
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let clean = html.replace(/<script[\s>][\s\S]*?<\/script>/gi, "");
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clean = clean.replace(/<style[\s>][\s\S]*?<\/style>/gi, "");
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clean = clean.replace(/<iframe[\s>][\s\S]*?<\/iframe>/gi, "");
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clean = clean.replace(
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/<\/?(?:script|style|iframe|object|embed|form|input|textarea|select|button)[^>]*>/gi,
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"",
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);
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clean = clean.replace(/\s+on\w+\s*=\s*(?:"[^"]*"|'[^']*'|[^\s>]+)/gi, "");
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clean = clean.replace(/href\s*=\s*"javascript:[^"]*"/gi, 'href=""');
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clean = clean.replace(/href\s*=\s*'javascript:[^']*'/gi, "href=''");
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return clean;
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}
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/** Normalize paragraphs — handles both native arrays and stringified JSON. */
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function normalizeParagraphs(paragraphs: string[] | JsonValue): string[] {
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let result: string[];
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if (typeof paragraphs === "string") {
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try {
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const parsed = JSON.parse(paragraphs);
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result = Array.isArray(parsed) ? parsed : [paragraphs];
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} catch {
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result = [paragraphs];
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}
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} else if (Array.isArray(paragraphs)) {
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result = paragraphs as string[];
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} else {
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result = [];
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}
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return result.map(sanitizeHtml);
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}
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/** Normalize purport (string[] from Prisma) via normalizeParagraphs. */
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function normalizePurport(purport: string[] | JsonValue): string[] {
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return normalizeParagraphs(purport);
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}
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// ---------------------------------------------------------------------------
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// Book meta
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// ---------------------------------------------------------------------------
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/**
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* Book-level metadata (title, author, texts list, etc.)
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*/
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export async function getBsMeta(): Promise<BsMeta | null> {
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const meta = await prisma.bookMeta.findUnique({ where: { book: BOOK } });
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if (!meta) return null;
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return meta.data as unknown as BsMeta;
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}
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// ---------------------------------------------------------------------------
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// Intro segments (from prose_chapters collection)
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// ---------------------------------------------------------------------------
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/**
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* All intro segments, ordered by their `order` field.
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*/
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export async function getBsIntroSegments(): Promise<BsIntroSegment[]> {
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const results = await prisma.proseChapter.findMany({
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where: { book: BOOK, volume: NO_VOLUME, type: "intro-segment" },
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orderBy: { order: "asc" },
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});
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return results.map((doc) => ({
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slug: doc.slug,
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title: doc.title,
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type: doc.type,
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book: doc.book,
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order: doc.order,
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paragraphs: normalizeParagraphs(doc.paragraphs),
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}));
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}
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/**
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* A single intro segment by slug.
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* Accepts both "intro-introduction" (URL slug) and "introduction" (raw slug).
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*/
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export async function getBsIntroSegment(
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slug: string,
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): Promise<BsIntroSegment | null> {
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// DB stores with "intro-" prefix; accept either form
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const dbSlug = slug.startsWith("intro-") ? slug : `intro-${slug}`;
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const doc = await prisma.proseChapter.findUnique({
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where: {
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book_volume_slug: { book: BOOK, volume: NO_VOLUME, slug: dbSlug },
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},
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});
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if (!doc) return null;
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return {
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slug: doc.slug,
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title: doc.title,
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type: doc.type,
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book: doc.book,
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order: doc.order,
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paragraphs: normalizeParagraphs(doc.paragraphs),
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};
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}
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// ---------------------------------------------------------------------------
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// Verses (from verses collection)
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// ---------------------------------------------------------------------------
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/**
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* A single verse/text by slug.
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*
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* - "1"-"62" → chapter=1–62, verse=1
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*
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* Verse stored as chapter=text_number, verse=1 in the verses collection.
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*/
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export async function getBsVerse(slug: string): Promise<BsVerse | null> {
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const num = Number(slug);
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if (!Number.isInteger(num) || num < 1 || num > 62) return null;
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const textNum = num;
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const doc = await prisma.verse.findFirst({
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where: { book: BOOK, division: null, chapter: textNum, verse: 1 },
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});
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if (!doc) return null;
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return {
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book: doc.book,
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book_title: doc.bookTitle,
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text: doc.chapter, // chapter field stores the text number
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title: TEXT_TITLES[doc.chapter] ?? `Text ${doc.chapter}`,
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reference: doc.reference,
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devanagari: doc.devanagari,
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transliteration: doc.transliteration,
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synonyms: doc.synonyms as { word: string; meanings: string[] }[],
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translation: sanitizeHtml(doc.translation),
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purport: normalizePurport(doc.purport),
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};
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}
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// ---------------------------------------------------------------------------
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// Unified content accessor
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// ---------------------------------------------------------------------------
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/**
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* Get content by URL slug.
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*
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* "intro-introduction" → intro segment
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* "intro-foreword" → intro segment
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* "1" … "62" → verse (text)
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*/
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export async function getBsContent(
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slug: string,
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): Promise<BsVerse | BsIntroSegment | null> {
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if (slug.startsWith("intro-")) {
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return getBsIntroSegment(slug);
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}
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const num = Number(slug);
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if (!Number.isNaN(num) && Number.isInteger(num) && num >= 1 && num <= 62) {
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return getBsVerse(String(num));
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}
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return null;
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}
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// ---------------------------------------------------------------------------
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// Sidebar navigation
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// ---------------------------------------------------------------------------
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/**
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* Build the full sidebar navigation list.
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*
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* Order: Introduction → Foreword → Texts 1-62
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*/
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export async function getBsSidebarItems(): Promise<BsSidebarItem[]> {
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const items: BsSidebarItem[] = [];
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// 1. Introduction intro segment
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items.push({
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slug: "intro-introduction",
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label: "Introduction",
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type: "intro-segment",
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text: null,
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});
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// 2. Foreword intro segment
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items.push({
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slug: "intro-foreword",
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label: "Foreword",
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type: "intro-segment",
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text: null,
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});
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// 3. Texts 1-62 (verses)
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for (let i = 1; i <= 62; i++) {
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items.push({
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slug: String(i),
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label: `${i}. ${TEXT_TITLES[i]}`,
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type: "verse",
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text: i,
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});
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}
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return items;
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}
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