Books Module Integration Guide

Quick Start

The Books module has been fully implemented and integrated into the Oter codebase. Here’s what you need to know:

What Was Created

Module Structure

books/
├── books_data/          # Data layer (Room, DAOs, DataSource)
├── books_domain/        # Domain layer (Models, Repository, Use Cases)
├── books_presentation/   # Presentation layer (UI, ViewModels, Navigation)
└── README.md            # Full documentation

Key Files

Data Layer:

• BookDao.kt / ReadingLogDao.kt - Room DAOs
• BookLocalDataSource.kt - Offline-first data source
• BooksRepositoryImpl.kt - Repository implementation
• Room entities: Book, ReadingLog

Domain Layer:

• Models: Book, ReadingLog, BookStatus, BookDetail, BooksStats
• BooksRepository interface
• Use cases: GetBooks, AddBook, UpdateBookStatus, LogReadingMinutes, etc.

Presentation Layer:

• ViewModels: BooksViewModel, BookDetailViewModel, BooksStatsViewModel
• Screens: BooksLibraryScreen, BookDetailScreen, BooksStatsScreen
• Bottom Sheets: AddBookBottomSheet, LogMinutesBottomSheet
• Navigation: BooksNavGraph.kt, BooksDestination.kt

Integration Steps

1. Database Migration

The AppDatabase has been updated to version 6 with the new entities:

• Book entity
• ReadingLog entity
• BookDao and ReadingLogDao added

2. Dependency Injection

• BooksDataModule - Provides data layer dependencies
• BooksDomainModule - Provides use cases
• AppModule - Provides DAOs

3. Navigation

The books graph has been added to NavHostWrapper.kt:

booksGraph(navController)

4. Routes

• books - Main library screen
• books/{bookId} - Book detail screen
• books/stats - Statistics screen

How to Access

From Navigation

Navigate to the books screen:

navController.navigate("books")

Add to Bottom Navigation (Optional)

If you want to add Books to the bottom navigation, update Routes.kt:

val BOOKS = BottomNavRoute("books", "books", "Books")

Then add it to your navigation graph.

Testing the Module

1. Add a Book:

   • Navigate to books
   • Tap ”+” FAB
   • Enter title (required), author (optional)
   • Tap “Add”

2. Log Reading Time:

   • Open a book detail
   • Tap “Log Minutes”
   • Enter minutes and date
   • Tap “Log”
   • If book was WANT, it auto-transitions to READING

3. Change Status:

   • From book detail, use action buttons:
     • “Start Reading” → READING
     • “Finish Book” → FINISHED
     • “Drop Book” → DROPPED

4. View Stats:

   • Tap stats icon in library
   • View reading statistics

Features

✅ Minimal Friction:

• Add book: Title only (author optional)
• Log minutes: Default 15 min, today’s date
• Big tap targets, no multi-step flows

✅ Automatic Transitions:

• Logging minutes on WANT → automatically sets to READING
• Records startedAt when first moved to READING
• Records finishedAt when FINISHED

✅ Offline-First:

• All data stored locally in Room
• No network required
• Fast, instant operations

✅ Stats Tracking:

• Minutes today/week/month
• Reading streak (consecutive days)
• Books finished this month
• Currently reading count

Database Schema

books table:

• id, title, author (nullable), status, createdAt, updatedAt, startedAt (nullable), finishedAt (nullable)

reading_logs table:

• id, bookId, date (YYYY-MM-DD), minutes, createdAt

Notes

• No notes/highlights: As per requirements, this is tracking-only
• Time-based only: No page/chapter tracking in MVP
• Local storage only: No sync/cloud features
• Simple UI: Fast, minimal, focused on quick logging

Troubleshooting

If you encounter issues:

1. Database migration: Ensure app database version is 6
2. DI errors: Check that BooksDataModule and BooksDomainModule are properly installed
3. Navigation: Verify booksGraph is added to NavHostWrapper
4. Imports: All imports should be from com.esteban.ruano.books_*

Next Steps

The module is ready to use! To add it to your app’s main navigation:

1. Add a navigation item/link to “books” route
2. Optionally add to bottom navigation bar
3. Test the full flow: add → log → finish

For detailed API documentation, see books/README.md.