Class: ProjectEulerCli::ArchiveViewer

Inherits:
Object
  • Object
show all
Includes:
Scraper
Defined in:
lib/project_euler_cli/archive_viewer.rb

Overview

Handles the work of displaying information about the problems.

Instance Method Summary collapse

Methods included from Scraper

#load_page, #load_problem_details, #load_recent, #lookup_totals

Constructor Details

#initialize(problems) ⇒ ArchiveViewer

Returns a new instance of ArchiveViewer.



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# File 'lib/project_euler_cli/archive_viewer.rb', line 7

def initialize(problems)
  @problems = problems
end

Instance Method Details

#display_custom_page(list) ⇒ Object

Displays a custom page of problems given by an array of IDs.

  • list - Array of problem IDs



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# File 'lib/project_euler_cli/archive_viewer.rb', line 55

def display_custom_page(list)
  puts
  list.each { |id| puts "#{id} - #{@problems[id].title}" }
end

#display_page(page) ⇒ Object

Displays the problem numbers and titles for an individual page of the archive.



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# File 'lib/project_euler_cli/archive_viewer.rb', line 24

def display_page(page)
  load_page(page, @problems)

  puts

  i = (page - 1) * Page::LENGTH
  Page::LENGTH.times do
    puts "#{i += 1} - #{@problems[i].title}" unless i >= Problem.total - 9
  end
end

#display_problem(id) ⇒ Object

Displays the details of an individual problem.

  • id - ID of the problem to be displayed



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# File 'lib/project_euler_cli/archive_viewer.rb', line 38

def display_problem(id)
  load_problem_details(id, @problems)

  puts
  puts "#{@problems[id].title}".upcase
  puts "Problem #{id}"
  puts
  puts @problems[id].published
  puts @problems[id].solved_by
  puts @problems[id].difficulty if id < Problem.total - 9
  puts
  puts "https://projecteuler.net/problem=#{id}"
end

#display_recent ⇒ Object

Displays the 10 most recently added problems.



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# File 'lib/project_euler_cli/archive_viewer.rb', line 12

def display_recent
  load_recent(@problems)

  puts

  (Problem.total).downto(Problem.total - 9) do |i| 
    puts "#{i} - #{@problems[i].title}" 
  end
end