cafe-grader-web

Location: cafe-grader-web/app/models/user.rb

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Commit Description:
add problem group
Commit Description:
add problem group
References:
r672:d41325ea3a15 java
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r672:d41325ea3a15 java
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app/models/user.rb | 401 lines | 10.2 KiB | text/x-ruby | RubyLexer |
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require 'digest/sha1'
require 'net/pop'
require 'net/https'
require 'net/http'
require 'json'
class User < ActiveRecord::Base
has_and_belongs_to_many :roles
has_and_belongs_to_many :groups
has_many :test_requests, -> {order(submitted_at: DESC)}
has_many :messages, -> { order(created_at: DESC) },
:class_name => "Message",
:foreign_key => "sender_id"
has_many :replied_messages, -> { order(created_at: DESC) },
:class_name => "Message",
:foreign_key => "receiver_id"
has_one :contest_stat, :class_name => "UserContestStat", :dependent => :destroy
belongs_to :site
belongs_to :country
has_and_belongs_to_many :contests, -> { order(:name); uniq}
scope :activated_users, -> {where activated: true}
validates_presence_of :login
validates_uniqueness_of :login
validates_format_of :login, :with => /\A[\_A-Za-z0-9]+\z/
validates_length_of :login, :within => 3..30
validates_presence_of :full_name
validates_length_of :full_name, :minimum => 1
validates_presence_of :password, :if => :password_required?
validates_length_of :password, :within => 4..20, :if => :password_required?
validates_confirmation_of :password, :if => :password_required?
validates_format_of :email,
:with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i,
:if => :email_validation?
validate :uniqueness_of_email_from_activated_users,
:if => :email_validation?
validate :enough_time_interval_between_same_email_registrations,
:if => :email_validation?
# these are for ytopc
# disable for now
#validates_presence_of :province
attr_accessor :password
before_save :encrypt_new_password
before_save :assign_default_site
before_save :assign_default_contest
# this is for will_paginate
cattr_reader :per_page
@@per_page = 50
def self.authenticate(login, password)
user = find_by_login(login)
if user
return user if user.authenticated?(password)
if user.authenticated_by_cucas?(password) or user.authenticated_by_pop3?(password)
user.password = password
user.save
return user
end
end
end
def authenticated?(password)
if self.activated
hashed_password == User.encrypt(password,self.salt)
else
false
end
end
def authenticated_by_pop3?(password)
Net::POP3.enable_ssl
pop = Net::POP3.new('pops.it.chula.ac.th')
authen = true
begin
pop.start(login, password)
pop.finish
return true
rescue
return false
end
end
def authenticated_by_cucas?(password)
url = URI.parse('https://www.cas.chula.ac.th/cas/api/?q=studentAuthenticate')
appid = '41508763e340d5858c00f8c1a0f5a2bb'
appsecret ='d9cbb5863091dbe186fded85722a1e31'
post_args = {
'appid' => appid,
'appsecret' => appsecret,
'username' => login,
'password' => password
}
#simple call
begin
http = Net::HTTP.new('www.cas.chula.ac.th', 443)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE
result = [ ]
http.start do |http|
req = Net::HTTP::Post.new('/cas/api/?q=studentAuthenticate')
param = "appid=#{appid}&appsecret=#{appsecret}&username=#{login}&password=#{password}"
resp = http.request(req,param)
result = JSON.parse resp.body
end
return true if result["type"] == "beanStudent"
rescue => e
return false
end
return false
end
def admin?
self.roles.detect {|r| r.name == 'admin' }
end
def email_for_editing
if self.email==nil
"(unknown)"
elsif self.email==''
"(blank)"
else
self.email
end
end
def email_for_editing=(e)
self.email=e
end
def alias_for_editing
if self.alias==nil
"(unknown)"
elsif self.alias==''
"(blank)"
else
self.alias
end
end
def alias_for_editing=(e)
self.alias=e
end
def activation_key
if self.hashed_password==nil
encrypt_new_password
end
Digest::SHA1.hexdigest(self.hashed_password)[0..7]
end
def verify_activation_key(key)
key == activation_key
end
def self.random_password(length=5)
chars = 'abcdefghjkmnopqrstuvwxyz'
password = ''
length.times { password << chars[rand(chars.length - 1)] }
password
end
def self.find_non_admin_with_prefix(prefix='')
users = User.all
return users.find_all { |u| !(u.admin?) and u.login.index(prefix)==0 }
end
# Contest information
def self.find_users_with_no_contest()
users = User.all
return users.find_all { |u| u.contests.length == 0 }
end
def contest_time_left
if GraderConfiguration.contest_mode?
return nil if site==nil
return site.time_left
elsif GraderConfiguration.indv_contest_mode?
time_limit = GraderConfiguration.contest_time_limit
if time_limit == nil
return nil
end
if contest_stat==nil or contest_stat.started_at==nil
return (Time.now.gmtime + time_limit) - Time.now.gmtime
else
finish_time = contest_stat.started_at + time_limit
current_time = Time.now.gmtime
if current_time > finish_time
return 0
else
return finish_time - current_time
end
end
else
return nil
end
end
def contest_finished?
if GraderConfiguration.contest_mode?
return false if site==nil
return site.finished?
elsif GraderConfiguration.indv_contest_mode?
return false if self.contest_stat(true)==nil
return contest_time_left == 0
else
return false
end
end
def contest_started?
if GraderConfiguration.indv_contest_mode?
stat = self.contest_stat
return ((stat != nil) and (stat.started_at != nil))
elsif GraderConfiguration.contest_mode?
return true if site==nil
return site.started
else
return true
end
end
def update_start_time
stat = self.contest_stat
if stat.nil? or stat.started_at.nil?
stat ||= UserContestStat.new(:user => self)
stat.started_at = Time.now.gmtime
stat.save
end
end
def problem_in_user_contests?(problem)
problem_contests = problem.contests.all
if problem_contests.length == 0 # this is public contest
return true
end
contests.each do |contest|
if problem_contests.find {|c| c.id == contest.id }
return true
end
end
return false
end
def available_problems_group_by_contests
contest_problems = []
pin = {}
contests.enabled.each do |contest|
available_problems = contest.problems.available
contest_problems << {
:contest => contest,
:problems => available_problems
}
available_problems.each {|p| pin[p.id] = true}
end
other_avaiable_problems = Problem.available.find_all {|p| pin[p.id]==nil and p.contests.length==0}
contest_problems << {
:contest => nil,
:problems => other_avaiable_problems
}
return contest_problems
end
def solve_all_available_problems?
available_problems.each do |p|
u = self
sub = Submission.find_last_by_user_and_problem(u.id,p.id)
return false if !p or !sub or sub.points < p.full_score
end
return true
end
def available_problems
if not GraderConfiguration.multicontests?
if GraderConfiguration.use_problem_group?
return available_problems_in_group
else
return Problem.available_problems
end
else
contest_problems = []
pin = {}
contests.enabled.each do |contest|
contest.problems.available.each do |problem|
if not pin.has_key? problem.id
contest_problems << problem
end
pin[problem.id] = true
end
end
other_avaiable_problems = Problem.available.find_all {|p| pin[p.id]==nil and p.contests.length==0}
return contest_problems + other_avaiable_problems
end
end
def available_problems_in_group
problem = []
self.groups.each do |group|
group.problems.where(available: true).each { |p| problem << p }
end
return problem.uniq
end
def can_view_problem?(problem)
if not GraderConfiguration.multicontests?
return problem.available
else
return problem_in_user_contests? problem
end
end
def self.clear_last_login
User.update_all(:last_ip => nil)
end
protected
def encrypt_new_password
return if password.blank?
self.salt = (10+rand(90)).to_s
self.hashed_password = User.encrypt(self.password,self.salt)
end
def assign_default_site
# have to catch error when migrating (because self.site is not available).
begin
if self.site==nil
self.site = Site.find_by_name('default')
if self.site==nil
self.site = Site.find(1) # when 'default has be renamed'
end
end
rescue
end
end
def assign_default_contest
# have to catch error when migrating (because self.site is not available).
begin
if self.contests.length == 0
default_contest = Contest.find_by_name(GraderConfiguration['contest.default_contest_name'])
if default_contest
self.contests = [default_contest]
end
end
rescue
end
end
def password_required?
self.hashed_password.blank? || !self.password.blank?
end
def self.encrypt(string,salt)
Digest::SHA1.hexdigest(salt + string)
end
def uniqueness_of_email_from_activated_users
user = User.activated_users.find_by_email(self.email)
if user and (user.login != self.login)
self.errors.add(:base,"Email has already been taken")
end
end
def enough_time_interval_between_same_email_registrations
return if !self.new_record?
return if self.activated
open_user = User.find_by_email(self.email,
:order => 'created_at DESC')
if open_user and open_user.created_at and
(open_user.created_at > Time.now.gmtime - 5.minutes)
self.errors.add(:base,"There are already unactivated registrations with this e-mail address (please wait for 5 minutes)")
end
end
def email_validation?
begin
return VALIDATE_USER_EMAILS
rescue
return false
end
end
end