Contact List App

contact.rb

require 'csv'

# Represents a person in an address book.
# The ContactList class will work with Contact objects instead of interacting with the CSV file directly
class Contact

  attr_accessor :name, :email
  
  
  # Creates a new contact object
  # @param name [String] The contact's name
  # @param email [String] The contact's email address
  def initialize(name, email)
    # TODO: Assign parameter values to instance variables.
    @name = name
    @email = email
  end

  # Provides functionality for managing contacts in the csv file.
  class << self

    # Opens 'contacts.csv' and creates a Contact object for each line in the file (aka each contact).
    # @return [Array<Contact>] Array of Contact objects
    def all
      # TODO: Return an Array of Contact instances made from the data in 'contacts.csv'.
      return_array = []

      CSV.foreach('contacts.csv') do |row|
         return_array << Contact.new(row[0], row[1])
      end
      return_array
    end

 

    # Creates a new contact, adding it to the csv file, returning the new contact.
    # @param name [String] the new contact's name
    # @param email [String] the contact's email
    def create(name, email)
      # TODO: Instantiate a Contact, add its data to the 'contacts.csv' file, and return it.
      new_contact = Contact.new(name, email)
      row = [new_contact.name, new_contact.email]
      CSV.open("contacts.csv", "a+") do |person|
        person << row

      end
    end
    
    # Find the Contact in the 'contacts.csv' file with the matching id.
    # @param id [Integer] the contact id
    # @return [Contact, nil] the contact with the specified id. If no contact has the id, returns nil.
    def find(id)
      CSV.read('contacts.csv')[id]
    end
    
    # Search for contacts by either name or email.
    # @param term [String] the name fragment or email fragment to search for
    # @return [Array<Contact>] Array of Contact objects.
    def search(search_term)
      # TODO: Select the Contact instances from the 'contacts.csv' file whose name or email attributes contain the search term.
      Contact.all.select do |contact|
        contact.name.downcase.include?(search_term)
      end
    end

  end

end

contact_list.rb

require_relative 'contact'

# Interfaces between a user and their contact list. Reads from and writes to standard I/O.
class ContactList

  # TODO: Implement user interaction. This should be the only file where you use `puts` and `gets`.

  def run
    show_options  
    input = gets.chomp.downcase
    case input
    when "list"
      list_contacts
    when "new"
      new_contact
    when "show"
      show_contact
    when "search"
      search_contacts
    end
  end

  private

  def show_options
    puts "Here is a list of available commands: Pick one"
    puts "    new     - Create a new contact"
    puts "    list    - List all contacts"
    puts "    show    - Show a contact"
    puts "    search  - Search contacts"
  end

  def list_contacts
    row_num = 0  
    Contact.all.each do |person|
      row_num += 1

      puts "#{row_num}: #{person.name} (#{person.email})"

    end
    puts "---"
    puts "#{row_num} records total"
  end

  def new_contact
    puts "What is the new person's name (first, last)?"
    new_name = gets.chomp

    puts "What is the new person's email address?"
    new_email = gets.chomp

    Contact.create(new_name, new_email)
  end

  def show_contact
    puts "Enter contact ID"
    id = gets.chomp.to_i

    contact = Contact.find(id)

    if contact
      puts contact.name + " " + contact.email
    else
      puts "not found"
    end
  end

  def search_contacts
    search_term = gets.chomp.downcase

    contacts = Contact.search(search_term)
    contacts.each do |contact|
      puts contact.name + " " + contact.email
    end
  end

end

ContactList.new.run

contacts.csv