Searches and sorts job candidates based on age, years of experience, github points, programming languages, the date applied and the candidate's age

candidates.rb

require 'active_support/all'

@candidates = [
  {
    id: 5,
    years_of_experience: 4,
    github_points: 293,
    languages: ['C', 'Ruby', 'Python', 'Clojure'],
    date_applied: 5.days.ago.to_date,
    age: 26
  },
  {
    id: 7,
    years_of_experience: 1,
    github_points: 145,
    languages: ['JavaScript', 'Ruby', 'Go', 'Erlang'],
    date_applied: 15.days.ago.to_date,
    age: 19
  },
  {
    id: 9,
    years_of_experience: 6,
    github_points: 435,
    languages: ['JavaScript', 'SQL', 'C#'],
    date_applied: 1.day.ago.to_date,
    age: 32
  },
  {
    id: 10,
    years_of_experience: 3,
    github_points: 232,
    languages: ['Java', 'Ruby', 'JavaScript'],
    date_applied: 12.days.ago.to_date,
    age: 31
  },
  {
    id: 11,
    years_of_experience: 12,
    github_points: 32,
    languages: ['VB', 'Cobol', 'Fortran'],
    date_applied: 2.days.ago.to_date,
    age: 42
  },
  {
    id: 13,
    years_of_experience: 2,
    github_points: 328,
    languages: ['Python', 'Ruby', 'JavaScript'],
    date_applied: 4.days.ago.to_date,
    age: 25
  },
  {
    id: 15,
    years_of_experience: 1,
    github_points: 400,
    languages: ['JavaScript', 'Ruby'],
    date_applied: 3.days.ago.to_date,
    age: 16
  },
]

filters.rb

def find(id)
  candidate = nil
  @candidates.each do |candidate|
    if candidate[:id] == id
      return candidate
    else
      return "So sorry, there is no candidate with that ID."
    end
  end
  candidate
end

def experienced?(cand)
    if @candidates[cand][:years_of_experience] >= 2
    return true
  else
    return false
  end
end

def qualified_candidates(range = @candidates)
  qualified = []
  @candidates.each do |candidate|
    if (candidate[:years_of_experience] >= 2) && 
      (candidate[:github_points] >= 100) && 
      !(['Ruby', 'Python'] & (candidate[:languages])).empty? && 
      (candidate[:date_applied] >= 15.days.ago.to_date) && 
      (candidate[:age] > 17)
      
      qualified << candidate
    end
  end
  qualified
end

def ordered_by_qualifications(range = @candidates)
  @candidates.sort_by {|candidate| [candidate[:years_of_experience], candidate[:github_points]]}.reverse
end

main.rb

require 'pry'
require './candidates'
require './filters'

loop do
  puts "---------------------------------------------------------"
  puts "Welcome to your search for the best dev talent out there!"
  puts "What would you like to do?"
  puts "You can:"
  puts "-      /find/ by id number,"
  puts "-      list /all/ candidates, "
  puts "-      list /qualified/ candidates or "
  puts "-      /quit/."
  puts "---------------------------------------------------------"

  puts "So, what's your choice?"
  choice = gets.chomp!

  case choice
  when /find\s(\d+)/
   pp find($1.to_i) 
  when 'all'
    pp ordered_by_qualifications
  when 'qualified'
    pp qualified_candidates
  when 'quit'
    break
  end
end