Class: BookReadingTrackerGem::BookService

Inherits:
Object
  • Object
show all
Defined in:
lib/book_reading_tracker_gem/services/book_service.rb

Class Method Summary collapse

Class Method Details

.add_book(title, author, total_pages, description = nil, isbn = nil, published_year = nil) ⇒ Object 



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# File 'lib/book_reading_tracker_gem/services/book_service.rb', line 9

def self.add_book(title, author, total_pages, description = nil, isbn = nil, published_year = nil)
  DatabaseConnection.connect
  book = Book.create!(
    title: title,
    description: description,
    isbn: isbn,
    published_year: published_year
  )
  book.authors.create!(author_name: author)
  book.create_reading_progress!(total_pages: total_pages)
  puts "Add book: #{book.title} successfully"
rescue StandardError => e
  puts "Error adding book: #{e.message}"
ensure
  DatabaseConnection.disconnect
end

.list_books ⇒ Object 



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# File 'lib/book_reading_tracker_gem/services/book_service.rb', line 113

def self.list_books
  DatabaseConnection.connect
  books = Book.includes(:authors).all

  if books.empty?
    puts 'No books in the system.'
    return
  end

  header = %w[id title description isbn published_year authors created_at updated_at]

  rows = books.map do |book|
    # Giới hạn lại thông tin để tránh bảng rộng bị -> dọc
    author_names = (book.authors.map(&:author_name).join(', ').then { |a| a.empty? ? 'N/A' : "#{a[0..20]}..." })

    # Giới hạn mô tả để tránh bảng quá rộng
    description = "#{(book.description || 'N/A')[0..30]}..."
    title = "#{(book.title || 'N/A')[0..20]}..."

    [
      book.id,
      title,
      description,
      book.isbn || 'N/A',
      book.published_year || 'N/A',
      author_names,
      book.created_at,
      book.updated_at
    ]
  end

  # Gọi hàm render_table từ CommonUtils với chế độ ép ngang
  CommonUtils.render_table(header, rows)
rescue StandardError => e
  puts "Error listing books: #{e.message}"
ensure
  DatabaseConnection.disconnect
end

.remove_book(id) ⇒ Object 



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# File 'lib/book_reading_tracker_gem/services/book_service.rb', line 26

def self.remove_book(id)
  DatabaseConnection.connect
  book = Book.find_by(id: id)
  if book
    book.reading_progress&.destroy
    book.book_authors.destroy_all
    book.destroy
    puts "Removed book: #{id}."
  else
    puts "Book not found: #{id}."
  end
rescue StandardError => e
  puts "Error removing book: #{e.message}"
ensure
  DatabaseConnection.disconnect
end

.show_progress(id) ⇒ Object 



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# File 'lib/book_reading_tracker_gem/services/book_service.rb', line 169

def self.show_progress(id)
  DatabaseConnection.connect
  book = Book.includes(:reading_progress).find_by(id: id)

  if book.nil?
    puts "Book not found: #{id}"
    return
  end

  if book.reading_progress.nil?
    puts "No reading progress for '#{book.title}'."
  else
    header = %w[id book_id status pages_read total_pages read created_at updated_at]
    progress = book.reading_progress
    pages_read = progress.pages_read
    total_pages = progress.total_pages
    read = "#{pages_read}/#{total_pages}"

    rows = [
      [
        book.id,
        book.title,
        progress.status,
        pages_read,
        total_pages,
        read,
        book.reading_progress.created_at,
        book.reading_progress.updated_at
      ]
    ]

    CommonUtils.render_table(header, rows)
  end
rescue StandardError => e
  puts "Error showing progress: #{e.message}"
ensure
  DatabaseConnection.disconnect
end

.stats ⇒ Object 



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# File 'lib/book_reading_tracker_gem/services/book_service.rb', line 152

def self.stats
  DatabaseConnection.connect
  total_books = Book.count
  read_books = ReadingProgress.where(status: 'read').count
  reading_books = ReadingProgress.where(status: 'reading').count
  unread_books = ReadingProgress.where(status: 'unread').count

  puts "Total books: #{total_books}"
  puts "Books read: #{read_books}"
  puts "Books reading: #{reading_books}"
  puts "Books unread: #{unread_books}"
rescue StandardError => e
  puts "Error generating stats: #{e.message}"
ensure
  DatabaseConnection.disconnect
end

.update_progress(id, pages_read) ⇒ Object 



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# File 'lib/book_reading_tracker_gem/services/book_service.rb', line 70

def self.update_progress(id, pages_read)
  if pages_read.negative?
    puts 'Pages read cannot be negative.'
    return
  end

  DatabaseConnection.connect
  book = Book.find_by(id: id)

  if book.nil?
    puts "Book not found: #{id}"
    return
  end

  reading_progress = book.reading_progress
  if reading_progress.nil?
    puts "No reading progress for '#{book.title}'."
    return
  end

  total_pages = reading_progress.total_pages

  if pages_read > total_pages
    puts "Pages read: #{pages_read} cannot exceed total pages: #{total_pages}."
    return
  end

  reading_progress.update!(pages_read: pages_read)
  puts "Updated reading progress for '#{book.title}' to page #{pages_read}."

  if pages_read.zero?
    update_status(id, 'unread')
  elsif pages_read < total_pages
    update_status(id, 'reading')
  elsif pages_read == total_pages
    update_status(id, 'read')
  end
rescue StandardError => e
  puts "Error updating progress: #{e.message}"
ensure
  DatabaseConnection.disconnect
end

.update_status(id, status) ⇒ Object 



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# File 'lib/book_reading_tracker_gem/services/book_service.rb', line 43

def self.update_status(id, status)
  valid_statuses = %w[unread reading read]
  unless valid_statuses.include?(status)
    puts "Invalid status. Accepted: #{valid_statuses.join(', ')}"
    return
  end

  DatabaseConnection.connect
  book = Book.find_by(id: id)
  if book.nil?
    puts "Book not found: #{id}"
    return
  end

  if book.reading_progress.nil?
    puts "No reading progress for '#{book.title}'."
    return
  end

  book.reading_progress.update!(status: status)
  puts "Updated status of '#{book.title}' to '#{status}'."
rescue StandardError => e
  puts "Error updating status: #{e.message}"
ensure
  DatabaseConnection.disconnect
end