class Admin::BooksController < ApplicationController
  before_action :authenticate_user!
  before_action :authorized_user!

  def index
    @books = Book.all.order(created_at: :desc).page params[:page]
  end

  def new
    @book = Book.new
  end

  def create
    @book = Book.new(book_params)
    if @book.save
      flash[:notice] = 'Book created successfully.'
      redirect_to admin_books_path
    else
      flash[:alert] = @book.errors.full_messages.join(', ')
      render :new
    end
  end

  def edit
    @book = Book.find(params[:id])
  end

  def update
    @book = Book.find(params[:id])
    if @book.update(book_params)
      flash[:notice] = 'Book updated successfully.'
      redirect_to admin_books_path
    else
      flash[:alert] = @book.errors.full_messages.join(', ')
      render :edit
    end
  end

  def destroy
    @book = Book.find(params[:id])
    if @book.destroy
      flash[:notice] = 'Book removed successfully.'
    else
      flash[:alert] = @book.errors.full_messages.join(', ')
    end
    redirect_to admin_books_path
  end

  def show
    @book = Book.find(params[:id])
  end

  private

  def book_params
    params.require(:book).permit(:title, :author, :genre, :sub_genre, :pages, :copies)
  end
end