Initial import

app/models/attachment.rb

@@ -0,0 +1,66 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+require 'fileutils.rb'
+
+class Attachment < ActiveRecord::Base
+
+	belongs_to :course
+	generate_validations
+	acts_as_paranoid
+
+	# Atributo virtual file
+	def file=(new_file)
+		@tmp_file = new_file
+		self.size = new_file.size
+	end
+
+	# Limpa o nome do arquivo
+	protected
+	def sanitize(filename)
+		filename = File.basename(filename)
+		filename.gsub(/[^\w\.\-]/, '_')
+	end
+
+	# Verifica se o arquivo é válido
+	def validate
+		if @tmp_file
+			errors.add("file") if @tmp_file.size == 0
+			errors.add("file", "is too large"[]) if @tmp_file.size > App.max_upload_file_size
+		else
+			# Caso o objeto possua id, significa que ele já está no banco de dados.
+			# Um arquivo em branco, entao, não é inválido: significa que a pessoa só quer
+			# modificar a descrição, ou algo assim..
+			errors.add("file", "is needed"[]) if not self.id
+		end
+	end
+
+	# Salva o arquivo fisicamente no HD
+	def after_save
+		@file_path = "#{RAILS_ROOT}/public/upload/#{course.id}/#{self.id}"
+		FileUtils.mkdir_p(File.dirname(@file_path))
+
+		if @tmp_file
+			logger.debug("Saving #{self.id}")
+			File.open(@file_path, "wb") do |f|
+				f.write(@tmp_file.read)
+			end
+		end
+	end
+
+	# Deleta o arquivo
+	#def after_destroy
+	#	@file_path = "#{RAILS_ROOT}/public/upload/#{course.id}/#{self.id}"
+	#	File.delete(@file_path) if File.exists?(@file_path)
+	#end
+end

app/models/course.rb

@@ -0,0 +1,56 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+class Course < ActiveRecord::Base
+
+	has_many :attachments, :order => "file_name"
+	has_many :wiki_pages, :order => "position"
+	
+	has_many :shoutbox_messages,
+	         :class_name => 'CourseShoutboxMessage',
+	         :foreign_key => "receiver_id",
+			 :order => 'id desc'
+
+	has_many :news,
+			 :class_name => 'News',
+	         :foreign_key => "receiver_id",
+			 :order => 'id desc'
+
+	has_many :events, :order => "date asc, time asc"
+
+	has_many :log_entries, :order => "created_at desc"
+
+	generate_validations
+	validates_uniqueness_of :short_name
+	validates_format_of :short_name, :with => /^[^0-9]/
+	
+	def after_create
+		App.inital_wiki_pages.each do |page_title|
+			wiki_page = WikiPage.new(:title => page_title, :version => 1, :content => App.initial_wiki_page_content)
+			self.wiki_pages << wiki_page
+		end
+	end
+
+	def after_destroy
+		associations = [:attachments, :wiki_pages, :shoutbox_messages, :news, :events]
+		associations.each do |assoc|
+			send("#{assoc}").each do |record|
+				record.destroy
+			end
+		end
+	end
+
+	def to_param
+		self.short_name
+	end
+end

app/models/event.rb

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+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+class Event < ActiveRecord::Base
+
+	acts_as_paranoid
+	generate_validations
+
+	def Event.to_ical(courses)
+		cal = Icalendar::Calendar.new
+		courses.each do |course|
+			course.events.each do |user_event|
+				event = Icalendar::Event.new
+				event.start = user_event.date
+				event.end = user_event.date
+				event.summary = "#{course.short_name}: #{user_event.title}"
+				event.description = user_event.description
+				cal.add(event)
+			end
+		end
+		return cal.to_ical
+	end
+end

app/models/log_entry.rb

@@ -0,0 +1,24 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+class LogEntry < ActiveRecord::Base
+	belongs_to :user
+	belongs_to :course
+
+	def reversible?() false end
+end
+
+require 'log_entry/attachment_log_entry.rb'
+require 'log_entry/event_log_entry.rb'
+require 'log_entry/news_log_entry.rb'
+require 'log_entry/wiki_log_entry.rb'

app/models/log_entry/attachment_log_entry.rb

@@ -0,0 +1,35 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+class AttachmentLogEntry < LogEntry
+	def attachment
+		Attachment.find_with_deleted(target_id)
+	end
+end
+
+class AttachmentDeleteLogEntry < AttachmentLogEntry
+	def reversible?()
+		a = Attachment.find_with_deleted(target_id)
+		a.deleted_at != nil
+	end
+	def undo!(current_user)
+		a = Attachment.find_with_deleted(target_id)
+		a.update_attribute(:deleted_at, nil)
+		AttachmentRestoreLogEntry.create!(:target_id => a.id, :user_id => current_user.id,
+				:course => a.course)
+	end
+end
+
+class AttachmentEditLogEntry < AttachmentLogEntry; end
+class AttachmentCreateLogEntry < AttachmentLogEntry; end
+class AttachmentRestoreLogEntry < AttachmentLogEntry; end

app/models/log_entry/event_log_entry.rb

@@ -0,0 +1,35 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+class EventLogEntry < LogEntry
+	def event
+		Event.find_with_deleted(target_id)
+	end
+end
+
+class EventDeleteLogEntry < EventLogEntry
+	def reversible?()
+		e = Event.find_with_deleted(target_id)
+		e.deleted_at != nil
+	end
+	def undo!(current_user)
+		e = Event.find_with_deleted(target_id)
+		e.update_attribute(:deleted_at, nil)
+		EventRestoreLogEntry.create!(:target_id => e.id, :user_id => current_user.id,
+				:course => e.course)
+	end
+end
+
+class EventEditLogEntry < EventLogEntry; end
+class EventCreateLogEntry < EventLogEntry; end
+class EventRestoreLogEntry < EventLogEntry; end

app/models/log_entry/news_log_entry.rb

@@ -0,0 +1,35 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+class NewsLogEntry < LogEntry
+	def news
+		News.find_with_deleted(target_id)
+	end
+end
+
+class NewsDeleteLogEntry < NewsLogEntry
+	def reversible?()
+		n = News.find_with_deleted(target_id)
+		n.deleted_at != nil
+	end
+	def undo!(current_user)
+		n = News.find_with_deleted(target_id)
+		n.update_attribute(:deleted_at, nil)
+		NewsRestoreLogEntry.create!(:target_id => n.id, :user_id => current_user.id,
+				:course => n.course)
+	end
+end
+
+class NewsEditLogEntry < NewsLogEntry; end
+class NewsCreateLogEntry < NewsLogEntry; end
+class NewsRestoreLogEntry < NewsLogEntry; end

app/models/log_entry/wiki_log_entry.rb

@@ -0,0 +1,43 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+class WikiLogEntry < LogEntry
+	def wiki_page
+		w = WikiPage.find_with_deleted(target_id)
+		w.revert_to(version)
+		return w
+	end
+end
+
+class WikiEditLogEntry < WikiLogEntry
+	validates_presence_of :version
+end
+
+class WikiDeleteLogEntry < WikiLogEntry
+	def reversible?()
+		w = WikiPage.find_with_deleted(target_id)
+		w.deleted_at != nil
+	end
+	def undo!(current_user)
+		w = WikiPage.find_with_deleted(target_id)
+		w.update_attribute(:deleted_at, nil)
+        w.position = w.course.wiki_pages.maximum(:position) + 1
+        w.save!
+		WikiRestoreLogEntry.create!(:target_id => w.id, :user_id => current_user.id,
+				:course => w.course)
+	end
+end
+
+class WikiCreateLogEntry < WikiLogEntry; end
+class WikiRestoreLogEntry < WikiLogEntry; end
+

app/models/message.rb

@@ -0,0 +1,39 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+class Message < ActiveRecord::Base
+	acts_as_paranoid
+	belongs_to :user,   :foreign_key => "sender_id"
+end
+
+
+class PrivateMessage < Message
+end
+
+
+class News < Message
+	validates_presence_of :title
+	belongs_to :course, :foreign_key => "receiver_id"
+end
+
+
+class ShoutboxMessage < Message
+end
+
+
+class CourseShoutboxMessage < ShoutboxMessage
+end
+
+
+class UserShoutboxMessage < ShoutboxMessage
+end

app/models/notifications.rb

@@ -0,0 +1,25 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+class Notifications < ActionMailer::Base
+
+	def forgot_password(to, login, pass, sent_at = Time.now)
+		@subject = "Your password is ..."
+		@body['login']=login
+		@body['pass']=pass
+		@recipients = to
+		@from = 'support@yourdomain.com'
+		@sent_on = sent_at
+		@headers = {}
+	end
+end

app/models/user.rb

@@ -0,0 +1,108 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+require 'digest/sha1'
+
+class User < ActiveRecord::Base
+
+	has_and_belongs_to_many :courses, :order => 'full_name'
+
+	validates_length_of       :login, :within => 3..40
+	validates_length_of       :name,  :within => 3..40
+	validates_length_of       :display_name, :within => 3..40
+
+	validates_presence_of     :login, :email, :display_name
+	validates_uniqueness_of   :login, :email, :display_name
+
+	validates_format_of :display_name, :with => /^[^0-9]/
+	validates_format_of :email,
+			:with => /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i
+
+	attr_protected :id, :salt
+	attr_accessor :password, :password_confirmation
+
+	has_many :shoutbox_messages,
+			 :class_name => 'UserShoutboxMessage',
+			 :foreign_key => "receiver_id",
+			 :order => 'id desc'
+
+	def User.find_by_login_and_pass(login, pass)
+		user = find(:first, :conditions => [ "login = ?", login ])
+		return (!user.nil? and User.encrypt(pass, user.salt) == user.hashed_password) ? user : nil
+	end	
+
+	def to_xml(options = {})
+		options[:indent] ||= 2
+		xml = options[:builder] ||= Builder::XmlMarkup.new(:indent => options[:indent])
+		xml.instruct! unless options[:skip_instruct]
+		xml.user do
+			xml.id self.id
+			xml.name self.name
+			xml.created_at self.created_at
+			xml.last_seen self.last_seen
+			xml.description self.description
+		end
+	end
+
+	# Gera uma nova senha, e a envia por email.
+	def send_new_password
+		new_pass = User.random_string(10)
+		@password = @password_confirmation = new_pass
+		save
+		Notifications.deliver_forgot_password(self.email, self.login, new_pass)
+	end
+
+	def reset_login_key
+		self.login_key = Digest::SHA1.hexdigest(Time.now.to_s + password.to_s + rand(123456789).to_s).to_s
+	end
+  
+	def reset_login_key!
+		reset_login_key
+		save!
+		self.login_key
+	end
+
+	def to_param
+		self.login
+	end
+
+	protected
+	def validate
+		if new_record?
+			errors.add_on_blank :password
+			errors.add_on_blank :password_confirmation
+		end
+
+		if !@password.blank?
+			errors.add(:password_confirmation) if @password_confirmation.blank? or @password != @password_confirmation 
+			errors.add(:password, 'é muito curta') if !(5..40).include?(@password.length)
+		end
+	end
+	
+	def before_save
+		self.salt = User.random_string(10) if !self.salt?
+		self.hashed_password = User.encrypt(@password, self.salt) if !@password.blank?
+	end
+
+	def self.encrypt(pass, salt)
+		Digest::SHA1.hexdigest(pass + salt)
+	end
+	
+	def self.random_string(len)
+		chars = ("a".."z").to_a + ("A".."Z").to_a + ("0".."9").to_a
+		newpass = ""
+		1.upto(len) { |i| newpass << chars[rand(chars.size-1)] }
+		return newpass
+	end
+
+end

app/models/wiki_page.rb

@@ -0,0 +1,59 @@
+# Engenharia de Software 2007.1
+# Copyright (C) 2007, Adriano, Alinson, Andre, Rafael e Bustamante
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+require 'acts_as_versioned'
+require 'tempfile'
+
+class WikiPage < ActiveRecord::Base
+
+	belongs_to :course
+	belongs_to :user
+
+	generate_validations
+	validates_uniqueness_of :title, :scope => :course_id
+	validates_format_of :title, :with => /^[^0-9]/
+
+	acts_as_paranoid
+	acts_as_list :scope => 'course_id = #{course_id}'
+	acts_as_versioned :if_changed => [ :content, :description, :title ]
+	self.non_versioned_fields << 'position'
+
+	def to_html(text = self.content)
+		return BlueCloth.new(text).to_html
+	end
+
+	def to_param
+		self.title
+	end
+
+	def WikiPage.diff(from, to)
+		# Cria um arquivo com o conteudo da versao antiga
+		original_content_file = Tempfile.new("old")
+		original_content_file << from.content << "\n"
+		original_content_file.flush
+
+		# Cria um arquivo com o conteudo da versao nova
+		new_content_file = Tempfile.new("new")
+		new_content_file << to.content << "\n"
+		new_content_file.flush
+		
+		# Calcula as diferencas
+		diff = `diff -u #{original_content_file.path()} #{new_content_file.path()}`
+
+		# Fecha os arquivos temporarios
+		new_content_file.close!
+		original_content_file.close!
+
+		return diff
+	end
+end