app.rb

# User stories:
# -list tasks
# -add a task
# -mark a task as done
# -remove a task

# MVC(R)
# model
# view
# controller
# router/repository

# require_relative 'task'
# require_relative 'view'
require_relative 'repository'
require_relative 'controller'

repository = Repository.new
controller = Controller.new(repository)

# Router/interpreter
action = nil
until action == 'quit'
  puts "which action would you like to do? (list | add | mark | remove | quit)"
  action = gets.chomp
  case action
  when "list" then controller.list
  when "add" then controller.add
  when "mark" then controller.mark
  when "remove" then controller.remove
  when "quit" then break
  else
    puts "this is an invalid input"
  end
end

controller.rb

require_relative 'view'
require_relative 'repository'
require_relative 'task'


# Controller/conductor --> Class eventually (not yet)
class Controller
  def initialize(repository)
    @repo = repository
  end

  def list
    tasks = @repo.all
    View.list_tasks(tasks)
  end

  def add
    description = View.return_user_input("what is your next task?")
    task = Task.new(description)
    @repo.add(task)
  end

  def mark
    tasks = @repo.all
    View.list_tasks(tasks)
    # list

    selected_index = View.return_index_input("Which task would you like to mark?")

    selected_task = @repo.find(selected_index)
    selected_task.mark_done!

    View.print("Successfully updated '#{selected_task.description}'")
  end

  def remove
    tasks = @repo.all
    View.list_tasks(tasks)
    # list

    selected_index = View.return_index_input("Which task would you like to delete (number)")

    @repo.remove(selected_index)
    View.print("Successfully removed your task")
  end
end

repository.rb

# Repository
class Repository
  def initialize
    @tasks = []
  end

  def all
    @tasks
  end

  def add(task)
    @tasks << task
  end

  def find(index)
    @tasks[index]
  end

  def remove(index)
    @tasks.delete_at(index)
  end
end

task.rb

# MODEL
class Task
  attr_accessor :description, :done

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

  def done?
    @done
  end

  def mark_done!
    @done = true
  end
end

view.rb

# View
class View
  def self.list_tasks(tasks)
    puts "Your tasks:"
    tasks.each_with_index do |task, index|
      marked = task.done? ? "[X]" : "[ ]"
      puts "#{index + 1} - #{marked} #{task.description}"
    end
  end

  def self.return_user_input(prompt)
    puts prompt
    input = gets.chomp
    return input
  end

  def self.return_index_input(prompt)
    puts prompt
    input = gets.chomp.to_i - 1
    return input
  end

  def self.print(prompt)
    puts prompt
  end
end