Ruby Todos 1.0: Core Features

todo.csv

Move with Lil to the black mountain hills of Dakota
Lose Lil to Danny
Get hit in the eye by Danny
Walk into town seeking revenge
Book room at local saloon
Check into room and read Gideon's bible
Drink too much gin
Overhear Lil and Danny in neighboring room
Burst into neighboring room and declare a showdown
Get shot by Danny and collapse in corner
Visit doctor
Return to room and read Gideon's bible
Sing along! "D'do d'do d'do do do d'do d'do d'do"

todo.rb

require 'csv'
 
class List
  attr_accessor :file, :tasks
 
  def initialize(file)
    @file = file 
    @tasks = []
  end
 
  def list(x)
    CSV.foreach(@file) do |row|
      @tasks << Task.new(row)
    end
    x = 0
    @tasks.map! do |row|
    r = row.instance_variable_get(:@entry).join
    x +=1
      if r[0] == 'x'
        r = r.gsub(/^x/, '')
        "#{x}. [x] #{r}"
      else  
        "#{x}. [ ] #{r}"
      end
    end 
    @tasks
  end
 
  def add(entry) 
    File.open("todo.csv", 'ab') do |csv|
       entry = entry + "\n"
       csv << entry
    end
    list('')
  end
 
  def delete(entry)
    task_array = []
    entry = entry.to_i - 1
    CSV.foreach(@file) do |row|
      task_array << row
    end
    task_array = task_array.flatten
    task_array.delete_at(entry)
    save_to_csv(task_array)
    list('')
  end
 
  def save_to_csv(task_array)
    File.open("todo.csv", 'wb') do |csv|     
      task_array.each do |y|
        csv << y + "\n"
      end
    end  
  end  
 
  def complete(entry)
    task_array = []
    entry = entry.to_i - 1
    CSV.foreach(@file) do |row|
      task_array << row
    end
    task_array = task_array.flatten
    t = task_array[entry]
      if t[0] == 'x'
        puts "already has x"
      else
        task_array[entry] = "x" + task_array[entry] 
      end
    save_to_csv(task_array)
    list('')
  end
end
 
class Task
  attr_accessor :entry
 
  def initialize(row)
    @entry = row
  end
 
end
 
####### DRIVER CODE ##########
 
list = List.new('todo.csv')
 
command = ARGV[0]
argument = ARGV[1]
 
unless command
  puts "Please enter a command"
else 
  puts eval("list.#{command}('#{argument}')") 
end
 
 
 
 
# run file with "list"
# return contents of list numbered
 
# run file with add
# return "task added"
# return contents of list numbered
 
# run file with delete + task number
# return "task deleted"
 
# run file with complete + task number
# return "task completed"
 
# run file with "completed"
# return contents of list with only completed
 
# run file with "list"
# return contents of remaining tasks