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Initial commit
This commit is contained in:
kikootwo
@@ -0,0 +1,733 @@
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/**
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* BookDate: Helper Functions for Recommendations
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* Documentation: documentation/features/bookdate-prd.md
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*/
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import { prisma } from '@/lib/db';
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import { getEncryptionService } from '@/lib/services/encryption.service';
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import { getConfigService } from '@/lib/services/config.service';
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import { AudibleService } from '@/lib/integrations/audible.service';
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import { getPlexService } from '@/lib/integrations/plex.service';
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import { findPlexMatch } from '@/lib/utils/audiobook-matcher';
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export interface LibraryBook {
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title: string;
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author: string;
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narrator?: string | null;
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rating?: number | null;
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}
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interface CachedLibraryBook {
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title: string;
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author: string;
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narrator: string | null;
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plexGuid: string;
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plexRatingKey: string | null;
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userRating?: any; // Admin's cached rating
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}
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export interface SwipeHistory {
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title: string;
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author: string;
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action: string;
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markedAsKnown: boolean;
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}
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export interface AIRecommendation {
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title: string;
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author: string;
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reason: string;
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}
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/**
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* Enrich cached library books with user's personal ratings from Plex
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* @param userId - User ID (to fetch their Plex token)
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* @param cachedBooks - Books from PlexLibrary table cache
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* @returns Books enriched with user's personal ratings
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*/
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async function enrichWithUserRatings(
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userId: string,
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cachedBooks: CachedLibraryBook[]
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): Promise<LibraryBook[]> {
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try {
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// Get user's Plex token, plexId, and role
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const user = await prisma.user.findUnique({
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where: { id: userId },
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select: { authToken: true, plexId: true, role: true },
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});
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if (!user) {
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console.warn('[BookDate] User not found');
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return cachedBooks.map(book => ({
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title: book.title,
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author: book.author,
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narrator: book.narrator || undefined,
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rating: undefined,
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}));
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}
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// Local admin users: Use cached ratings (from system Plex token)
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// Local admins authenticate with username/password, not Plex OAuth
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if (user.plexId.startsWith('local-')) {
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console.log('[BookDate] User is local admin, using cached ratings (from system Plex token)');
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return cachedBooks.map(book => ({
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title: book.title,
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author: book.author,
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narrator: book.narrator || undefined,
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rating: book.userRating ? parseFloat(book.userRating.toString()) : undefined,
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}));
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}
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// Plex-authenticated users (including admins): Fetch library with their token to get personal ratings
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// Note: /library/sections/{id}/all returns items with the authenticated user's ratings
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console.log('[BookDate] User is Plex-authenticated, fetching library with user token to get personal ratings');
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if (!user.authToken) {
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console.warn('[BookDate] User has no Plex auth token');
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return cachedBooks.map(book => ({
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title: book.title,
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author: book.author,
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narrator: book.narrator || undefined,
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rating: undefined,
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}));
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}
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// Get Plex configuration
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const configService = getConfigService();
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const plexConfig = await configService.getPlexConfig();
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if (!plexConfig.serverUrl || !plexConfig.libraryId) {
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console.warn('[BookDate] No Plex server URL or library ID configured');
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return cachedBooks.map(book => ({
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title: book.title,
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author: book.author,
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narrator: book.narrator || undefined,
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rating: undefined,
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}));
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}
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// Decrypt user's plex.tv OAuth token
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let userPlexToken: string;
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const encryptionService = getEncryptionService();
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try {
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userPlexToken = encryptionService.decrypt(user.authToken);
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} catch (decryptError) {
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// Token might be stored as plain text (from before encryption or different implementation)
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// Try using it as-is
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console.warn('[BookDate] Failed to decrypt user Plex token, trying as plain text');
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userPlexToken = user.authToken;
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}
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try {
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// Get server-specific access token
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// Per Plex API: plex.tv OAuth tokens are for plex.tv, but we need
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// server-specific access tokens from /api/v2/resources to talk to PMS
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const plexService = getPlexService();
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// Get server machine ID from stored config (no need to access system token)
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if (!plexConfig.machineIdentifier) {
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console.error('[BookDate] Server machine identifier not configured');
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return cachedBooks.map(book => ({
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title: book.title,
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author: book.author,
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narrator: book.narrator || undefined,
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rating: undefined,
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}));
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}
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const serverMachineId = plexConfig.machineIdentifier;
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const serverAccessToken = await plexService.getServerAccessToken(
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serverMachineId,
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userPlexToken
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);
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if (!serverAccessToken) {
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console.warn('[BookDate] Could not get server access token for user (may not have server access)');
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return cachedBooks.map(book => ({
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title: book.title,
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author: book.author,
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narrator: book.narrator || undefined,
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rating: undefined,
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}));
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}
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console.log('[BookDate] Successfully obtained server access token for user');
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// Fetch library content with user's SERVER access token to get their personal ratings
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const userLibrary = await plexService.getLibraryContent(
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plexConfig.serverUrl,
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serverAccessToken,
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plexConfig.libraryId
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);
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console.log(`[BookDate] Fetched ${userLibrary.length} items from Plex with user's token`);
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// Create a map of guid/ratingKey -> userRating for quick lookup
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const ratingsMap = new Map<string, number>();
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userLibrary.forEach(item => {
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if (item.userRating) {
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// Try to match by guid first (most reliable)
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if (item.guid) {
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ratingsMap.set(item.guid, item.userRating);
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}
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// Also store by ratingKey as fallback
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if (item.ratingKey) {
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ratingsMap.set(item.ratingKey, item.userRating);
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}
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}
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});
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console.log(`[BookDate] Found ${ratingsMap.size} rated items for non-admin user`);
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// Enrich cached books with user's ratings from the fetched library
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return cachedBooks.map(book => {
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// Try to find rating by guid first (most reliable), then ratingKey
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let rating: number | undefined;
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if (book.plexGuid) {
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rating = ratingsMap.get(book.plexGuid);
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}
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if (!rating && book.plexRatingKey) {
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rating = ratingsMap.get(book.plexRatingKey);
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}
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return {
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title: book.title,
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author: book.author,
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narrator: book.narrator || undefined,
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rating: rating,
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};
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});
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} catch (fetchError: any) {
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if (fetchError?.response?.status === 401 || fetchError?.message?.includes('401')) {
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console.warn('[BookDate] User token unauthorized for library access (shared users may not have direct API access)');
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console.warn('[BookDate] Falling back to recommendations without user ratings');
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} else {
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console.error('[BookDate] Failed to fetch library with user token:', fetchError);
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}
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// Fallback: return books without ratings
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return cachedBooks.map(book => ({
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title: book.title,
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author: book.author,
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narrator: book.narrator || undefined,
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rating: undefined,
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}));
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}
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} catch (error) {
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console.error('[BookDate] Error enriching books with user ratings:', error);
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// Fallback: return books without ratings on error
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return cachedBooks.map(book => ({
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title: book.title,
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author: book.author,
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narrator: book.narrator || undefined,
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rating: undefined,
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}));
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}
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}
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/**
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* Get user's Plex library books based on scope
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* @param userId - User ID
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* @param scope - 'full' | 'listened' | 'rated'
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* @returns Array of library books (max 40)
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*/
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export async function getUserLibraryBooks(
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userId: string,
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scope: 'full' | 'listened' | 'rated'
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): Promise<LibraryBook[]> {
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try {
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// Get user's Plex library configuration
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const configService = getConfigService();
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const plexConfig = await configService.getPlexConfig();
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if (!plexConfig.libraryId) {
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console.warn('[BookDate] No Plex library ID configured');
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return [];
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}
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const plexLibraryId = plexConfig.libraryId;
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// Check user type to determine query strategy for 'rated' scope
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const user = await prisma.user.findUnique({
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where: { id: userId },
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select: { plexId: true },
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});
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const isLocalAdmin = user?.plexId.startsWith('local-') ?? false;
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// Build query filters based on scope and user type
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let whereClause: any = { plexLibraryId };
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let takeLimit = 40;
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if (scope === 'rated') {
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if (isLocalAdmin) {
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// Local admin: Filter by cached ratings (these are their ratings)
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whereClause.userRating = { not: null };
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} else {
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// Plex-authenticated: Fetch more books to ensure we get 40 rated ones
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// Don't filter by cached ratings - user's ratings may differ from system token
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takeLimit = 100;
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}
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}
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// Query Plex library from database (cached structure, includes system token's cached ratings)
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let cachedBooks = await prisma.plexLibrary.findMany({
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where: whereClause,
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orderBy: {
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addedAt: 'desc',
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},
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take: takeLimit,
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select: {
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title: true,
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author: true,
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narrator: true,
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plexGuid: true,
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plexRatingKey: true,
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userRating: true, // System token's cached ratings from scan
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},
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});
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// Enrich with user's personal ratings from Plex
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const enrichedBooks = await enrichWithUserRatings(userId, cachedBooks);
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// If scope is 'rated', filter to only books the user has actually rated
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if (scope === 'rated') {
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const ratedBooks = enrichedBooks.filter(book => book.rating != null);
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// Limit to 40 for Plex users (local admin already limited in query)
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return isLocalAdmin ? ratedBooks : ratedBooks.slice(0, 40);
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}
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return enrichedBooks;
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} catch (error) {
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console.error('[BookDate] Error fetching library books:', error);
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return [];
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}
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}
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/**
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* Get user's recent swipes
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* Prioritizes non-dismiss actions (likes/requests/dislikes) over dismissals
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* @param userId - User ID
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* @param limit - Max number of swipes to return
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* @returns Array of recent swipes (prioritized: non-dismiss first, then dismissals)
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*/
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export async function getUserRecentSwipes(
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userId: string,
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limit: number = 10
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): Promise<SwipeHistory[]> {
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try {
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// First, get the most recent non-dismiss swipes (left=reject, right=like/request)
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// These are most informative for AI recommendations
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const nonDismissSwipes = await prisma.bookDateSwipe.findMany({
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where: {
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userId,
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action: { in: ['left', 'right'] },
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},
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orderBy: { createdAt: 'desc' },
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take: limit,
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select: {
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bookTitle: true,
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bookAuthor: true,
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action: true,
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markedAsKnown: true,
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createdAt: true,
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},
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});
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// Calculate remaining slots for dismissals
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const remainingSlots = limit - nonDismissSwipes.length;
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// If we have remaining slots, fill with dismiss swipes (up=dismiss)
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let dismissSwipes: typeof nonDismissSwipes = [];
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if (remainingSlots > 0) {
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dismissSwipes = await prisma.bookDateSwipe.findMany({
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where: {
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userId,
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action: 'up',
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},
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orderBy: { createdAt: 'desc' },
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take: remainingSlots,
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select: {
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bookTitle: true,
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bookAuthor: true,
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action: true,
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markedAsKnown: true,
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createdAt: true,
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},
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});
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}
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// Combine both lists, maintaining chronological order (most recent first)
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const allSwipes = [...nonDismissSwipes, ...dismissSwipes].sort(
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(a, b) => b.createdAt.getTime() - a.createdAt.getTime()
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);
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console.log(
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`[BookDate] Fetched ${allSwipes.length} swipes: ${nonDismissSwipes.length} non-dismiss, ${dismissSwipes.length} dismiss`
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);
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return allSwipes.map((s) => ({
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title: s.bookTitle,
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author: s.bookAuthor,
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action: s.action,
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markedAsKnown: s.markedAsKnown,
|
||||
}));
|
||||
|
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} catch (error) {
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console.error('[BookDate] Error fetching swipe history:', error);
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return [];
|
||||
}
|
||||
}
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|
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/**
|
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* Build AI prompt for recommendations
|
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* @param userId - User ID
|
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* @param config - User's BookDate configuration
|
||||
* @returns JSON string prompt for AI
|
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*/
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export async function buildAIPrompt(
|
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userId: string,
|
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config: { libraryScope: string; customPrompt?: string | null }
|
||||
): Promise<string> {
|
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const libraryBooks = await getUserLibraryBooks(
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userId,
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config.libraryScope as 'full' | 'listened' | 'rated'
|
||||
);
|
||||
|
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const swipeHistory = await getUserRecentSwipes(userId, 10);
|
||||
|
||||
console.log('[BookDate] Building AI prompt with context:');
|
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console.log(`[BookDate] - Library books: ${libraryBooks.length}`);
|
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console.log(`[BookDate] - Swipe history: ${swipeHistory.length}`);
|
||||
console.log(`[BookDate] - Custom prompt: ${config.customPrompt ? 'Yes' : 'No'}`);
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console.log(`[BookDate] - Library scope: ${config.libraryScope}`);
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||||
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const prompt = {
|
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task: 'recommend_audiobooks',
|
||||
user_context: {
|
||||
library_books: libraryBooks.slice(0, 40),
|
||||
swipe_history: swipeHistory.map(s => ({
|
||||
title: s.title,
|
||||
author: s.author,
|
||||
user_action: s.action === 'right'
|
||||
? (s.markedAsKnown ? 'marked_as_liked' : 'requested')
|
||||
: s.action === 'left' ? 'rejected' : 'dismissed',
|
||||
})),
|
||||
custom_preferences: config.customPrompt || null,
|
||||
},
|
||||
instructions:
|
||||
'Based on the user\'s library and swipe history, recommend 20 audiobooks they would enjoy. ' +
|
||||
'Important rules:\n' +
|
||||
'1. DO NOT recommend any books already in the user\'s library\n' +
|
||||
'2. DO NOT recommend any books from the swipe history (whether requested, rejected, dismissed, or marked_as_liked)\n' +
|
||||
'3. Focus on variety and quality\n' +
|
||||
'4. Consider user ratings if available (0-10 scale, higher = liked more)\n' +
|
||||
'5. Learn from rejected books to avoid similar recommendations\n' +
|
||||
'6. Learn from requested books to find similar ones\n' +
|
||||
'7. Pay special attention to "marked_as_liked" books - these are books the user has already read/listened to elsewhere and enjoyed. Find similar books to these.\n' +
|
||||
'Return ONLY valid JSON with no additional text or formatting.',
|
||||
response_format: {
|
||||
recommendations: [
|
||||
{
|
||||
title: 'string',
|
||||
author: 'string',
|
||||
reason: '1-2 sentence explanation',
|
||||
},
|
||||
],
|
||||
},
|
||||
};
|
||||
|
||||
const promptString = JSON.stringify(prompt);
|
||||
console.log('[BookDate] Full AI prompt:', promptString);
|
||||
|
||||
return promptString;
|
||||
}
|
||||
|
||||
/**
|
||||
* Call AI API to get recommendations
|
||||
* @param provider - 'openai' | 'claude'
|
||||
* @param model - Model ID
|
||||
* @param encryptedApiKey - Encrypted API key
|
||||
* @param prompt - JSON prompt string
|
||||
* @returns Parsed AI response with recommendations
|
||||
*/
|
||||
export async function callAI(
|
||||
provider: string,
|
||||
model: string,
|
||||
encryptedApiKey: string,
|
||||
prompt: string
|
||||
): Promise<{ recommendations: AIRecommendation[] }> {
|
||||
const encryptionService = getEncryptionService();
|
||||
const apiKey = encryptionService.decrypt(encryptedApiKey);
|
||||
|
||||
console.log(`[BookDate] Calling AI provider: ${provider}, model: ${model}`);
|
||||
|
||||
if (provider === 'openai') {
|
||||
const systemMessage = 'You are an expert audiobook recommender. Analyze user preferences and suggest audiobooks they will love. Return ONLY valid JSON.';
|
||||
const requestBody = {
|
||||
model,
|
||||
response_format: { type: 'json_object' },
|
||||
messages: [
|
||||
{
|
||||
role: 'system',
|
||||
content: systemMessage,
|
||||
},
|
||||
{
|
||||
role: 'user',
|
||||
content: prompt,
|
||||
},
|
||||
],
|
||||
};
|
||||
|
||||
console.log('[BookDate] OpenAI request body:', JSON.stringify(requestBody, null, 2));
|
||||
|
||||
const response = await fetch('https://api.openai.com/v1/chat/completions', {
|
||||
method: 'POST',
|
||||
headers: {
|
||||
'Authorization': `Bearer ${apiKey}`,
|
||||
'Content-Type': 'application/json',
|
||||
},
|
||||
body: JSON.stringify(requestBody),
|
||||
});
|
||||
|
||||
if (!response.ok) {
|
||||
const errorText = await response.text();
|
||||
console.error('[BookDate] OpenAI API error:', response.status, errorText);
|
||||
throw new Error(`OpenAI API error: ${response.status} ${errorText}`);
|
||||
}
|
||||
|
||||
const data = await response.json();
|
||||
const content = data.choices[0].message.content;
|
||||
console.log('[BookDate] OpenAI response:', content);
|
||||
return JSON.parse(content);
|
||||
|
||||
} else if (provider === 'claude') {
|
||||
const userMessage = `${prompt}\n\nReturn ONLY valid JSON with no additional text or formatting.`;
|
||||
const requestBody = {
|
||||
model,
|
||||
max_tokens: 4096,
|
||||
messages: [
|
||||
{
|
||||
role: 'user',
|
||||
content: userMessage,
|
||||
},
|
||||
],
|
||||
};
|
||||
|
||||
console.log('[BookDate] Claude request body:', JSON.stringify(requestBody, null, 2));
|
||||
|
||||
const response = await fetch('https://api.anthropic.com/v1/messages', {
|
||||
method: 'POST',
|
||||
headers: {
|
||||
'x-api-key': apiKey,
|
||||
'anthropic-version': '2023-06-01',
|
||||
'content-type': 'application/json',
|
||||
},
|
||||
body: JSON.stringify(requestBody),
|
||||
});
|
||||
|
||||
if (!response.ok) {
|
||||
const errorText = await response.text();
|
||||
console.error('[BookDate] Claude API error:', response.status, errorText);
|
||||
throw new Error(`Claude API error: ${response.status} ${errorText}`);
|
||||
}
|
||||
|
||||
const data = await response.json();
|
||||
const content = data.content[0].text;
|
||||
console.log('[BookDate] Claude raw response:', content);
|
||||
|
||||
// Claude sometimes wraps JSON in markdown code blocks, so clean it
|
||||
const cleanedContent = content
|
||||
.replace(/^```json\s*/i, '')
|
||||
.replace(/\s*```$/i, '')
|
||||
.trim();
|
||||
|
||||
console.log('[BookDate] Claude cleaned response:', cleanedContent);
|
||||
return JSON.parse(cleanedContent);
|
||||
|
||||
} else {
|
||||
throw new Error(`Invalid provider: ${provider}`);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Match AI recommendation to Audnexus
|
||||
* @param title - Book title
|
||||
* @param author - Book author
|
||||
* @returns Matched metadata or null
|
||||
*/
|
||||
export async function matchToAudnexus(
|
||||
title: string,
|
||||
author: string
|
||||
): Promise<{
|
||||
asin: string;
|
||||
title: string;
|
||||
author: string;
|
||||
narrator: string | null;
|
||||
rating: number | null;
|
||||
description: string | null;
|
||||
coverUrl: string | null;
|
||||
} | null> {
|
||||
try {
|
||||
// Step 1: Search in Audible cache first (fastest)
|
||||
const cached = await prisma.audibleCache.findFirst({
|
||||
where: {
|
||||
OR: [
|
||||
{
|
||||
title: {
|
||||
contains: title,
|
||||
mode: 'insensitive',
|
||||
},
|
||||
author: {
|
||||
contains: author,
|
||||
mode: 'insensitive',
|
||||
},
|
||||
},
|
||||
],
|
||||
},
|
||||
select: {
|
||||
asin: true,
|
||||
title: true,
|
||||
author: true,
|
||||
narrator: true,
|
||||
rating: true,
|
||||
description: true,
|
||||
coverArtUrl: true,
|
||||
},
|
||||
});
|
||||
|
||||
if (cached) {
|
||||
console.log(`[BookDate] Found in cache: "${cached.title}" by ${cached.author}`);
|
||||
return {
|
||||
asin: cached.asin,
|
||||
title: cached.title,
|
||||
author: cached.author,
|
||||
narrator: cached.narrator,
|
||||
rating: cached.rating ? parseFloat(cached.rating.toString()) : null,
|
||||
description: cached.description,
|
||||
coverUrl: cached.coverArtUrl,
|
||||
};
|
||||
}
|
||||
|
||||
// Step 2: Search Audible.com for the book
|
||||
console.log(`[BookDate] Not in cache, searching Audible for "${title}" by ${author}...`);
|
||||
const audibleService = new AudibleService();
|
||||
const searchQuery = `${title} ${author}`;
|
||||
const searchResults = await audibleService.search(searchQuery, 1);
|
||||
|
||||
if (!searchResults.results || searchResults.results.length === 0) {
|
||||
console.warn(`[BookDate] No Audible search results for "${title}" by ${author}`);
|
||||
return null;
|
||||
}
|
||||
|
||||
// Take the first result (best match)
|
||||
const firstResult = searchResults.results[0];
|
||||
console.log(`[BookDate] Found on Audible: "${firstResult.title}" (ASIN: ${firstResult.asin})`);
|
||||
|
||||
// Step 3: Use ASIN to fetch full details from Audnexus (or Audible as fallback)
|
||||
const details = await audibleService.getAudiobookDetails(firstResult.asin);
|
||||
|
||||
if (!details) {
|
||||
console.warn(`[BookDate] Could not fetch details for ASIN ${firstResult.asin}`);
|
||||
return null;
|
||||
}
|
||||
|
||||
console.log(`[BookDate] Successfully matched "${title}" to ASIN ${details.asin}`);
|
||||
|
||||
return {
|
||||
asin: details.asin,
|
||||
title: details.title,
|
||||
author: details.author,
|
||||
narrator: details.narrator || null,
|
||||
rating: details.rating || null,
|
||||
description: details.description || null,
|
||||
coverUrl: details.coverArtUrl || null,
|
||||
};
|
||||
|
||||
} catch (error) {
|
||||
console.error(`[BookDate] Audnexus matching error for "${title}":`, error);
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if book is already in user's library
|
||||
* Uses the same matching algorithm as homepage (audiobook-matcher.ts)
|
||||
* @param userId - User ID
|
||||
* @param title - Book title
|
||||
* @param author - Book author
|
||||
* @param asin - Optional ASIN for exact matching
|
||||
* @returns true if book is in library
|
||||
*/
|
||||
export async function isInLibrary(
|
||||
userId: string,
|
||||
title: string,
|
||||
author: string,
|
||||
asin?: string
|
||||
): Promise<boolean> {
|
||||
try {
|
||||
// Use the centralized matching algorithm from audiobook-matcher.ts
|
||||
// This ensures consistent matching behavior across the application
|
||||
const match = await findPlexMatch({
|
||||
asin: asin || '', // Empty ASIN will skip exact ASIN matching but still do fuzzy matching
|
||||
title,
|
||||
author,
|
||||
});
|
||||
|
||||
if (match) {
|
||||
console.log(`[BookDate] Book "${title}" by ${author} found in library (matched to: "${match.title}")`);
|
||||
}
|
||||
|
||||
return !!match;
|
||||
} catch (error) {
|
||||
console.error(`[BookDate] Error checking library for "${title}":`, error);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if book has already been requested
|
||||
* @param userId - User ID
|
||||
* @param asin - Audible ASIN
|
||||
* @returns true if book is already requested
|
||||
*/
|
||||
export async function isAlreadyRequested(
|
||||
userId: string,
|
||||
asin: string
|
||||
): Promise<boolean> {
|
||||
const request = await prisma.request.findFirst({
|
||||
where: {
|
||||
userId,
|
||||
audiobook: {
|
||||
audibleAsin: asin,
|
||||
},
|
||||
},
|
||||
});
|
||||
|
||||
return !!request;
|
||||
}
|
||||
|
||||
/**
|
||||
* Check if book has already been swiped
|
||||
* @param userId - User ID
|
||||
* @param title - Book title
|
||||
* @param author - Book author
|
||||
* @returns true if book has been swiped
|
||||
*/
|
||||
export async function isAlreadySwiped(
|
||||
userId: string,
|
||||
title: string,
|
||||
author: string
|
||||
): Promise<boolean> {
|
||||
const swipe = await prisma.bookDateSwipe.findFirst({
|
||||
where: {
|
||||
userId,
|
||||
bookTitle: title,
|
||||
bookAuthor: author,
|
||||
},
|
||||
});
|
||||
|
||||
return !!swipe;
|
||||
}
|
||||
Reference in New Issue
Block a user