cookbook-day-1-recap

app.rb

require_relative 'cookbook'    # You need to create this file!
require_relative 'controller'  # You need to create this file!
require_relative 'router'

csv_file   = File.join(__dir__, 'recipes.csv')
cookbook   = Cookbook.new(csv_file)
controller = Controller.new(cookbook)

router = Router.new(controller)

# Start the app
router.run

controller.rb

require_relative 'view'
require_relative 'recipe'

class Controller
  def initialize(cookbook)
    @cookbook = cookbook
    @view = View.new
  end

  def list
    display_recipes
  end

  def create
    # 1. Ask the user for the name
    name = @view.ask_user_for('name')
    # 2. Ask the user for the description
    description = @view.ask_user_for('description')
    # 3. Create a recipe
    recipe = Recipe.new(name, description)
    # 4. Store the recipe in the cookbook
    @cookbook.add_recipe(recipe)
  end

  def destroy
    # 1. List recipes
    display_recipes
    # 2. Ask the for user for index
    recipe_index = @view.ask_user_for_index
    # 3. Tell the cookbook to delete the recipe at index
    @cookbook.remove_recipe(recipe_index)
  end

  private

  def display_recipes
    # 1. Ask the cookbook for the recipes
    recipes = @cookbook.all
    # 2. Ask the view to print the recipes
    @view.list_recipes(recipes)
  end
end

cookbook.rb

require 'csv'
require_relative 'recipe'

class Cookbook
  def initialize(csv_path)
    @recipes = []
    @csv_path = csv_path
    load_csv
  end

  def all
    return @recipes
  end

  def add_recipe(recipe)
    @recipes << recipe
    save_csv
  end

  def remove_recipe(recipe_index)
    @recipes.delete_at(recipe_index)
    save_csv
  end

  private

  def save_csv
    CSV.open(@csv_path, 'wb') do |csv|
      @recipes.each do |recipe|
        csv << [recipe.name, recipe.description]
      end
    end
  end

  def load_csv
    CSV.foreach(@csv_path) do |row|
      @recipes << Recipe.new(row[0], row[1])
    end
  end

end

recipe.rb

class Recipe
  attr_reader :name, :description
  def initialize(name, description)
    @name = name
    @description= description
  end
end

router.rb

class Router
  def initialize(controller)
    @controller = controller
    @running    = true
  end

  def run
    puts "Welcome to the Cookbook!"
    puts "           --           "

    while @running
      display_tasks
      action = gets.chomp.to_i
      print `clear`
      route_action(action)
    end
  end

  private

  def route_action(action)
    case action
    when 1 then @controller.list
    when 2 then @controller.create
    when 3 then @controller.destroy
    when 4 then stop
    else
      puts "Please press 1, 2, 3 or 4"
    end
  end

  def stop
    @running = false
  end

  def display_tasks
    puts ""
    puts "What do you want to do next?"
    puts "1 - List all recipes"
    puts "2 - Create a new recipe"
    puts "3 - Destroy a recipe"
    puts "4 - Stop and exit the program"
  end
end

view.rb

class View
  def list_recipes(recipes)
    recipes.each_with_index do |recipe, index|
      puts "#{index + 1}. #{recipe.name}"
    end
  end

  def ask_user_for(attribute)
    puts "Please enter a #{attribute}"
    return gets.chomp
  end

  def ask_user_for_index
    puts "Which number"
    return gets.chomp.to_i - 1
  end
end