parsing_data_1.rb

class Person
  attr_reader :id, :first_name, :last_name, :email, :phone, :created_at

  def initialize(id, first_name, last_name, email, phone, created_at)
      @id             = id
      @first_name     = first_name
      @last_name      = last_name
      @email          = email 
      @phone          = phone
      @created_at     = DateTime.parse(created_at)
  end

end
 

class PersonParser
  attr_reader :file, :people
  
  def initialize(file)
    @file = file
    @people = []
  end
  
  def people  
    return @people unless @people.empty?
    file_parse 
    @people
  end

  def file_parse
    counter = 0
    CSV.foreach("file.csv", headers: true) do |row|
      # if counter == 0
      #   @header = row 
      # else
         
        @people << Person.new(row["id"], 
                             row["first_name"],
                             row["last_name"],
                             row["email"],
                             row["phone"],
                             row["created_at"])
      # end
      counter += 1
    end
  end 

  def add_person(person)
    @people << person
  end 

  def save
    CSV.open("file.csv", "w") do |csv|
      @people.each do |person|
        csv << [  person.id, 
                  person.first_name,
                  person.last_name,
                  person.email,
                  person.phone,
                  person.created_at]
      end 
    end
  end

end


#Driver Code 
require 'csv'
require 'pp'
require 'date'

parser = PersonParser.new('file.csv')
puts "There are #{parser.people.size} people in the file '#{parser.file}'."

parser.file_parse

PP.pp parser.people