Week 6 - Advanced topics

Synchronous File IO

File processing

Error handling

Array methods

Closures

Style - How to write meaningful comments

Practice

Assignment

• Teachers

Core program

Week 6 Assignment - Reading List Manager

Build a command-line reading list that saves to files using error handling and array methods.

Project Requirements

Setup & Configuration

• Initialize npm with package.json
• Install [email protected]
• Create .gitignore for node_modules/
• Set up Prettier with .prettierrc

Core Functionality

Data Structure

Store books in books.json:

[
  {
    id: 1,
    title: "1984",
    author: "George Orwell",
    genre: "Fiction",
    read: false
  }
  // ... at least 5 books
]

Required Functions

File operations with error handling:

• loadBooks() - Read from file, create empty array if missing
• saveBooks(books) - Write to file with try-catch
• addBook(book) - Add and save

Array method functions:

• getUnreadBooks() - Use filter()
• getBooksByGenre(genre) - Use filter()
• markAsRead(id) - Use map() to update
• getTotalBooks() - Use length
• hasUnreadBooks() - Use some()

Display functions:

• printAllBooks() - Loop through and display with chalk
• printSummary() - Show statistics

Error Handling

Must handle:

• Missing books.json (create empty array)
• Invalid JSON (notify user, use empty array)
• All file operations in try-catch blocks

Display (Chalk)

• Read books in green
• Unread books in yellow
• Titles in cyan
• Summary stats in bold

Required Features

Create working program with:

• Load books on startup
• Display all books
• Filter by read/unread status
• Add new book
• Mark book as read
• Show summary (total books, read count, unread count)

Example Output

📚 MY READING LIST 📚

All Books:
1. 1984 by George Orwell (Fiction) ✓ Read
2. Dune by Frank Herbert (Sci-Fi) ⚠ Unread
3. The Hobbit by J.R.R. Tolkien (Fantasy) ✓ Read

📊 SUMMARY 📊
Total Books: 3
Read: 2
Unread: 1

Submission

The assignment repository can be found in https://github.com/HackYourAssignment/ with the name cXX-core-week-## (Replace XX with your cohort number and ## with the week number)

Follow the Assignment submission guide to learn how to submit the assignment

*https://hackyourfuture.net/*

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