Todo Manager - 17 octobre 2014 - Promo 4 de http://www.lewagon.org

app.rb

require_relative "task_repository"
require_relative "display"
require_relative "controller"

# Creer fausse base de données
task_repository = TaskRepository.new

# Creer un Display
display = Display.new

# Creer un controlleur
controller = Controller.new(
  task_repository, display)

while true
  controller.list_tasks

  puts "Que voulez-vous faire maintenant?"
  puts "1 - Ajouter une tâche"
  puts "2 - Terminer une tâche"
  action = gets.chomp.to_i

  if action == 1
    controller.add_task
  elsif action == 2
    controller.mark_task_as_done
  end
end

controller.rb

require_relative "task"

class Controller
  def initialize(task_repository, display)
    # Injection de dependance
    @task_repository = task_repository
    @display = display
  end

  def list_tasks
    # recupere toutes les tasks
    tasks = @task_repository.tasks
    # affiche
    @display.print_tasks(tasks)
  end

  def add_task
    description = @display.ask_user_for_new_task_description
    task = Task.new(description)
    @task_repository.add_task(task)
  end

  def mark_task_as_done
    index = @display.ask_user_for_task_id_to_mark_as_done
    if index
      task = @task_repository.tasks[index]
      task.mark_as_done if task
    end
  end

  # TODO: cocher, supprimer
end

display.rb

class Display
  def ask_user_for_new_task_description
    puts "Vous voulez faire quoi ?"
    print "> "
    return gets.chomp
  end

  def print_tasks(tasks)
    puts "Voici la liste des tâches:"
    tasks.each_with_index do |task, index|
      done_string = task.done ? "[x]" : "[ ]"
      puts "#{index + 1} - #{done_string} #{task.description}"
    end
  end

  def ask_user_for_task_id_to_mark_as_done
    puts "Quelle tâche voulez-vous marquer comme faîte ?"
    begin
      id = Integer(gets.chomp)
      id - 1
    rescue ArgumentError
      puts "Ce n'est pas un id correct"
      nil
    end
  end
end

task.rb

class Task
  attr_reader :description, :done

  def initialize(description)
    @description = description
    @done = false
  end

  def mark_as_done
    @done = true
  end
end

task_repository.rb

class TaskRepository
  attr_reader :tasks

  def initialize
    @tasks = []  # Stocke instances de class Task
  end

  def add_task(task)
    @tasks << task
  end
end

yihhhhaaaa!