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class ProblemsController < ApplicationController
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before_action :authenticate, :authorization
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before_action :testcase_authorization, only: [:show_testcase]
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in_place_edit_for :problem, :name
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in_place_edit_for :problem, :full_name
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in_place_edit_for :problem, :full_score
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def index
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@problems = Problem.order(date_added: :desc)
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end
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# GETs should be safe (see http://www.w3.org/2001/tag/doc/whenToUseGet.html)
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verify :method => :post, :only => [ :create, :quick_create,
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:do_manage,
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:do_import,
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],
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:redirect_to => { :action => :index }
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def show
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@problem = Problem.find(params[:id])
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end
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def new
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@problem = Problem.new
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@description = nil
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end
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def create
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@problem = Problem.new(problem_params)
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@description = Description.new(params[:description])
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if @description.body!=''
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if !@description.save
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render :action => new and return
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end
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else
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@description = nil
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end
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@problem.description = @description
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if @problem.save
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flash[:notice] = 'Problem was successfully created.'
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redirect_to action: :index
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else
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render :action => 'new'
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end
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end
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def quick_create
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@problem = Problem.new(problem_params)
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@problem.full_name = @problem.name if @problem.full_name == ''
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@problem.full_score = 100
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@problem.available = false
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@problem.test_allowed = true
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@problem.output_only = false
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@problem.date_added = Time.new
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if @problem.save
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flash[:notice] = 'Problem was successfully created.'
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redirect_to action: :index
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else
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flash[:notice] = 'Error saving problem'
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redirect_to action: :index
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end
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end
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def edit
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@problem = Problem.find(params[:id])
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@description = @problem.description
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end
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def update
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@problem = Problem.find(params[:id])
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@description = @problem.description
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if @description.nil? and params[:description][:body]!=''
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@description = Description.new(params[:description])
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if !@description.save
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flash[:notice] = 'Error saving description'
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render :action => 'edit' and return
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end
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@problem.description = @description
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elsif @description
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if !@description.update_attributes(params[:description])
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flash[:notice] = 'Error saving description'
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render :action => 'edit' and return
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end
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end
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if params[:file] and params[:file].content_type != 'application/pdf'
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flash[:notice] = 'Error: Uploaded file is not PDF'
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render :action => 'edit' and return
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end
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if @problem.update_attributes(problem_params)
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flash[:notice] = 'Problem was successfully updated.'
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unless params[:file] == nil or params[:file] == ''
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flash[:notice] = 'Problem was successfully updated and a new PDF file is uploaded.'
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out_dirname = "#{Problem.download_file_basedir}/#{@problem.id}"
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if not FileTest.exists? out_dirname
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Dir.mkdir out_dirname
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end
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out_filename = "#{out_dirname}/#{@problem.name}.pdf"
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if FileTest.exists? out_filename
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File.delete out_filename
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end
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File.open(out_filename,"wb") do |file|
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file.write(params[:file].read)
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end
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@problem.description_filename = "#{@problem.name}.pdf"
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@problem.save
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end
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redirect_to :action => 'show', :id => @problem
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else
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render :action => 'edit'
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end
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end
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def destroy
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p = Problem.find(params[:id]).destroy
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redirect_to action: :index
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end
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def toggle
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@problem = Problem.find(params[:id])
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@problem.update_attributes(available: !(@problem.available) )
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respond_to do |format|
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format.js { }
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end
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end
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def toggle_test
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@problem = Problem.find(params[:id])
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@problem.update_attributes(test_allowed: !(@problem.test_allowed?) )
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respond_to do |format|
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format.js { }
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end
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end
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def toggle_view_testcase
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@problem = Problem.find(params[:id])
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@problem.update_attributes(view_testcase: !(@problem.view_testcase?) )
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respond_to do |format|
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format.js { }
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end
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end
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def turn_all_off
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Problem.available.all.each do |problem|
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problem.available = false
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problem.save
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end
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redirect_to action: :index
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end
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def turn_all_on
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Problem.where.not(available: true).each do |problem|
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problem.available = true
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problem.save
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end
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redirect_to action: :index
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end
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def stat
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@problem = Problem.find(params[:id])
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unless @problem.available or session[:admin]
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redirect_to :controller => 'main', :action => 'list'
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return
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end
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@submissions = Submission.includes(:user).includes(:language).where(problem_id: params[:id]).order(:user_id,:id)
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#stat summary
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range =65
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@histogram = { data: Array.new(range,0), summary: {} }
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user = Hash.new(0)
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@submissions.find_each do |sub|
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d = (DateTime.now.in_time_zone - sub.submitted_at) / 24 / 60 / 60
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@histogram[:data][d.to_i] += 1 if d < range
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user[sub.user_id] = [user[sub.user_id], ((sub.try(:points) || 0) >= @problem.full_score) ? 1 : 0].max
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end
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@histogram[:summary][:max] = [@histogram[:data].max,1].max
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@summary = { attempt: user.count, solve: 0 }
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user.each_value { |v| @summary[:solve] += 1 if v == 1 }
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end
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def manage
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@problems = Problem.order(date_added: :desc)
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end
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def do_manage
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if params.has_key? 'change_date_added' and params[:date_added].strip.empty? == false
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change_date_added
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elsif params.has_key? 'add_to_contest'
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add_to_contest
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elsif params.has_key? 'enable_problem'
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set_available(true)
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elsif params.has_key? 'disable_problem'
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set_available(false)
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elsif params.has_key? 'add_group'
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group = Group.find(params[:group_id])
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ok = []
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failed = []
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get_problems_from_params.each do |p|
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begin
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group.problems << p
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ok << p.full_name
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rescue => e
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failed << p.full_name
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end
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end
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flash[:success] = "The following problems are added to the group #{group.name}: " + ok.join(', ') if ok.count > 0
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flash[:alert] = "The following problems are already in the group #{group.name}: " + failed.join(', ') if failed.count > 0
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elsif params.has_key? 'add_tags'
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get_problems_from_params.each do |p|
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p.tag_ids += params[:tag_ids]
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end
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end
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redirect_to :action => 'manage'
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end
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def import
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@allow_test_pair_import = allow_test_pair_import?
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end
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def do_import
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old_problem = Problem.find_by_name(params[:name])
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if !allow_test_pair_import? and params.has_key? :import_to_db
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params.delete :import_to_db
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end
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@problem, import_log = Problem.create_from_import_form_params(params,
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old_problem)
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if !@problem.errors.empty?
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render :action => 'import' and return
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end
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if old_problem!=nil
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flash[:notice] = "The test data has been replaced for problem #{@problem.name}"
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end
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@log = import_log
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end
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def remove_contest
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problem = Problem.find(params[:id])
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contest = Contest.find(params[:contest_id])
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if problem!=nil and contest!=nil
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problem.contests.delete(contest)
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end
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redirect_to :action => 'manage'
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end
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##################################
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protected
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def allow_test_pair_import?
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if defined? ALLOW_TEST_PAIR_IMPORT
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return ALLOW_TEST_PAIR_IMPORT
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else
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return false
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end
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end
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def change_date_added
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problems = get_problems_from_params
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date = Date.parse(params[:date_added])
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problems.each do |p|
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p.date_added = date
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p.save
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end
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end
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def add_to_contest
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problems = get_problems_from_params
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contest = Contest.find(params[:contest][:id])
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if contest!=nil and contest.enabled
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problems.each do |p|
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p.contests << contest
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end
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end
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end
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def set_available(avail)
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problems = get_problems_from_params
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problems.each do |p|
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p.available = avail
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p.save
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end
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end
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def get_problems_from_params
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problems = []
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params.keys.each do |k|
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if k.index('prob-')==0
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name, id, order = k.split('-')
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problems << Problem.find(id)
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end
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end
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problems
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end
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def get_problems_stat
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end
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private
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def problem_params
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params.require(:problem).permit(:name, :full_name, :full_score, :date_added, :available, :test_allowed,:output_only, :url, :description, tag_ids:[])
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end
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end
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