17 files changed, 594 insertions, 0 deletions

diff --git a/app/controllers/events_controller.rb b/app/controllers/events_controller.rb
new file mode 100644
index 0000000..c25c73f
--- /dev/null
+++ b/app/controllers/events_controller.rb
@@ -0,0 +1,85 @@
+class EventsController < ApplicationController
+  # GET /events
+  # GET /events.xml
+  def index
+    @events = Event.all
+
+    respond_to do |format|
+      format.html # index.html.erb
+      format.xml  { render :xml => @events }
+    end
+  end
+
+  # GET /events/1
+  # GET /events/1.xml
+  def show
+    @event = Event.find(params[:id])
+
+    respond_to do |format|
+      format.html # show.html.erb
+      format.xml  { render :xml => @event }
+    end
+  end
+
+  # GET /events/new
+  # GET /events/new.xml
+  def new
+    @event = Event.new
+
+    respond_to do |format|
+      format.html # new.html.erb
+      format.xml  { render :xml => @event }
+    end
+  end
+
+  # GET /events/1/edit
+  def edit
+    @event = Event.find(params[:id])
+  end
+
+  # POST /events
+  # POST /events.xml
+  def create
+    @event = Event.new(params[:event])
+
+    respond_to do |format|
+      if @event.save
+        flash[:notice] = 'Event was successfully created.'
+        format.html { redirect_to(@event) }
+        format.xml  { render :xml => @event, :status => :created, :location => @event }
+      else
+        format.html { render :action => "new" }
+        format.xml  { render :xml => @event.errors, :status => :unprocessable_entity }
+      end
+    end
+  end
+
+  # PUT /events/1
+  # PUT /events/1.xml
+  def update
+    @event = Event.find(params[:id])
+
+    respond_to do |format|
+      if @event.update_attributes(params[:event])
+        flash[:notice] = 'Event was successfully updated.'
+        format.html { redirect_to(@event) }
+        format.xml  { head :ok }
+      else
+        format.html { render :action => "edit" }
+        format.xml  { render :xml => @event.errors, :status => :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /events/1
+  # DELETE /events/1.xml
+  def destroy
+    @event = Event.find(params[:id])
+    @event.destroy
+
+    respond_to do |format|
+      format.html { redirect_to(events_url) }
+      format.xml  { head :ok }
+    end
+  end
+end
diff --git a/app/controllers/occurrences_controller.rb b/app/controllers/occurrences_controller.rb
new file mode 100644
index 0000000..e3f1cdd
--- /dev/null
+++ b/app/controllers/occurrences_controller.rb
@@ -0,0 +1,85 @@
+class OccurrencesController < ApplicationController
+  # GET /occurrences
+  # GET /occurrences.xml
+  def index
+    @occurrences = Occurrence.all
+
+    respond_to do |format|
+      format.html # index.html.erb
+      format.xml  { render :xml => @occurrences }
+    end
+  end
+
+  # GET /occurrences/1
+  # GET /occurrences/1.xml
+  def show
+    @occurrence = Occurrence.find(params[:id])
+
+    respond_to do |format|
+      format.html # show.html.erb
+      format.xml  { render :xml => @occurrence }
+    end
+  end
+
+  # GET /occurrences/new
+  # GET /occurrences/new.xml
+  def new
+    @occurrence = Occurrence.new
+
+    respond_to do |format|
+      format.html # new.html.erb
+      format.xml  { render :xml => @occurrence }
+    end
+  end
+
+  # GET /occurrences/1/edit
+  def edit
+    @occurrence = Occurrence.find(params[:id])
+  end
+
+  # POST /occurrences
+  # POST /occurrences.xml
+  def create
+    @occurrence = Occurrence.new(params[:occurrence])
+
+    respond_to do |format|
+      if @occurrence.save
+        flash[:notice] = 'Occurrence was successfully created.'
+        format.html { redirect_to(@occurrence) }
+        format.xml  { render :xml => @occurrence, :status => :created, :location => @occurrence }
+      else
+        format.html { render :action => "new" }
+        format.xml  { render :xml => @occurrence.errors, :status => :unprocessable_entity }
+      end
+    end
+  end
+
+  # PUT /occurrences/1
+  # PUT /occurrences/1.xml
+  def update
+    @occurrence = Occurrence.find(params[:id])
+
+    respond_to do |format|
+      if @occurrence.update_attributes(params[:occurrence])
+        flash[:notice] = 'Occurrence was successfully updated.'
+        format.html { redirect_to(@occurrence) }
+        format.xml  { head :ok }
+      else
+        format.html { render :action => "edit" }
+        format.xml  { render :xml => @occurrence.errors, :status => :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /occurrences/1
+  # DELETE /occurrences/1.xml
+  def destroy
+    @occurrence = Occurrence.find(params[:id])
+    @occurrence.destroy
+
+    respond_to do |format|
+      format.html { redirect_to(occurrences_url) }
+      format.xml  { head :ok }
+    end
+  end
+end
diff --git a/app/helpers/events_helper.rb b/app/helpers/events_helper.rb
new file mode 100644
index 0000000..8a9a878
--- /dev/null
+++ b/app/helpers/events_helper.rb
@@ -0,0 +1,2 @@
+module EventsHelper
+end
diff --git a/app/helpers/occurrences_helper.rb b/app/helpers/occurrences_helper.rb
new file mode 100644
index 0000000..8cba881
--- /dev/null
+++ b/app/helpers/occurrences_helper.rb
@@ -0,0 +1,2 @@
+module OccurrencesHelper
+end
diff --git a/app/models/event.rb b/app/models/event.rb
new file mode 100644
index 0000000..60b8521
--- /dev/null
+++ b/app/models/event.rb
@@ -0,0 +1,27 @@
+class Event < ActiveRecord::Base
+  
+  # Associations
+  
+  has_many    :occurrences
+  belongs_to  :node
+  
+  # Callbacks
+  
+  after_save  :generate_occurences
+  
+  # Instance Methods
+  
+  def occurrences_in_range start_time, end_time
+    self.occurrences.find(
+      :all, :conditions => [
+        "start_time > ? AND end_time < ?", 
+        start_time, end_time
+      ]
+    )
+  end
+  
+  private
+    def generate_occurences
+      Occurrence.generate self
+    end
+end
diff --git a/app/models/node.rb b/app/models/node.rb
index d2db4ba..da26164 100644
--- a/app/models/node.rb
+++ b/app/models/node.rb
@@ -7,6 +7,7 @@ class Node < ActiveRecord::Base
   belongs_to  :head,  :class_name => "Page",  :foreign_key => :head_id
   belongs_to  :draft, :class_name => "Page",  :foreign_key => :draft_id
   has_many    :permissions
+  has_one     :event
   
   # Callbacks
   after_create :initialize_empty_page
diff --git a/app/models/occurrence.rb b/app/models/occurrence.rb
new file mode 100644
index 0000000..6205618
--- /dev/null
+++ b/app/models/occurrence.rb
@@ -0,0 +1,60 @@
+# TODO Make a gem out of the c wrapper
+require 'lib/chaos_calendar/ical_occurrences'
+
+class Occurrence < ActiveRecord::Base
+  
+  # Associations
+  
+  belongs_to :node
+  belongs_to :event
+  
+  # Class Methods
+  
+  def self.find_in_range start_time, end_time
+    find(
+      :all, :conditions => [
+        "start_time > ? AND end_time < ?", start_time, end_time 
+      ]
+    )
+  end
+  
+  # Deletes all Occurrences which belong to the given event. Afterwards a few
+  # variables are set to save repetitive queries. The occurrences of the given
+  # event are then calculated and created.
+  def self.generate event
+    self.delete_all(:event_id => event.id)
+    
+    node        = event.node
+    summary     = node.head.title
+    duration    = (event.end_time - event.start_time)
+    occurrences = self.generate_dates(event)
+    
+    occurrences.each do |occurrence|
+      self.create(
+        :summary    => summary,
+        :start_time => occurrence,
+        :end_time   => (occurrence + duration),
+        :node_id    => node.id,
+        :event_id   => event.id
+      )
+    end
+  end
+  
+  # Calculates the start_time of all occurrences for a given event if a proper
+  # RRule is provided. An ArgumentError is thrown from within the libical
+  # wrapper if the RRule is malformed. If the rrule attribute of an event is
+  # nil, it simply returns the event start_time as only occurrence.
+  # Return value is always an array of Time objects.
+  def self.generate_dates event
+    if event.rrule
+      Ical_occurrences::occurrences( 
+        event.start_time.utc.iso8601, 
+        (Time.now + 5.years).utc.iso8601, 
+        event.rrule
+      )
+    else
+      [event.start_time]
+    end
+      
+  end
+end
diff --git a/app/views/events/edit.html.erb b/app/views/events/edit.html.erb
new file mode 100644
index 0000000..e40ac55
--- /dev/null
+++ b/app/views/events/edit.html.erb
@@ -0,0 +1,48 @@
+<h1>Editing event</h1>
+
+<% form_for(@event) do |f| %>
+  <%= f.error_messages %>
+
+  <p>
+    <%= f.label :start_time %><br />
+    <%= f.datetime_select :start_time %>
+  </p>
+  <p>
+    <%= f.label :end_time %><br />
+    <%= f.datetime_select :end_time %>
+  </p>
+  <p>
+    <%= f.label :rrule %><br />
+    <%= f.text_field :rrule %>
+  </p>
+  <p>
+    <%= f.label :custom_rrule %><br />
+    <%= f.check_box :custom_rrule %>
+  </p>
+  <p>
+    <%= f.label :allday %><br />
+    <%= f.check_box :allday %>
+  </p>
+  <p>
+    <%= f.label :url %><br />
+    <%= f.text_field :url %>
+  </p>
+  <p>
+    <%= f.label :latitude %><br />
+    <%= f.text_field :latitude %>
+  </p>
+  <p>
+    <%= f.label :longitude %><br />
+    <%= f.text_field :longitude %>
+  </p>
+  <p>
+    <%= f.label :node_id %><br />
+    <%= f.text_field :node_id %>
+  </p>
+  <p>
+    <%= f.submit 'Update' %>
+  </p>
+<% end %>
+
+<%= link_to 'Show', @event %> |
+<%= link_to 'Back', events_path %>
\ No newline at end of file
diff --git a/app/views/events/index.html.erb b/app/views/events/index.html.erb
new file mode 100644
index 0000000..c1b5b48
--- /dev/null
+++ b/app/views/events/index.html.erb
@@ -0,0 +1,36 @@
+<h1>Listing events</h1>
+
+<table>
+  <tr>
+    <th>Start time</th>
+    <th>End time</th>
+    <th>Rrule</th>
+    <th>Custom rrule</th>
+    <th>Allday</th>
+    <th>Url</th>
+    <th>Latitude</th>
+    <th>Longitude</th>
+    <th>Node</th>
+  </tr>
+
+<% @events.each do |event| %>
+  <tr>
+    <td><%=h event.start_time %></td>
+    <td><%=h event.end_time %></td>
+    <td><%=h event.rrule %></td>
+    <td><%=h event.custom_rrule %></td>
+    <td><%=h event.allday %></td>
+    <td><%=h event.url %></td>
+    <td><%=h event.latitude %></td>
+    <td><%=h event.longitude %></td>
+    <td><%=h event.node_id %></td>
+    <td><%= link_to 'Show', event %></td>
+    <td><%= link_to 'Edit', edit_event_path(event) %></td>
+    <td><%= link_to 'Destroy', event, :confirm => 'Are you sure?', :method => :delete %></td>
+  </tr>
+<% end %>
+</table>
+
+<br />
+
+<%= link_to 'New event', new_event_path %>
\ No newline at end of file
diff --git a/app/views/events/new.html.erb b/app/views/events/new.html.erb
new file mode 100644
index 0000000..0182b07
--- /dev/null
+++ b/app/views/events/new.html.erb
@@ -0,0 +1,47 @@
+<h1>New event</h1>
+
+<% form_for(@event) do |f| %>
+  <%= f.error_messages %>
+
+  <p>
+    <%= f.label :start_time %><br />
+    <%= f.datetime_select :start_time %>
+  </p>
+  <p>
+    <%= f.label :end_time %><br />
+    <%= f.datetime_select :end_time %>
+  </p>
+  <p>
+    <%= f.label :rrule %><br />
+    <%= f.text_field :rrule %>
+  </p>
+  <p>
+    <%= f.label :custom_rrule %><br />
+    <%= f.check_box :custom_rrule %>
+  </p>
+  <p>
+    <%= f.label :allday %><br />
+    <%= f.check_box :allday %>
+  </p>
+  <p>
+    <%= f.label :url %><br />
+    <%= f.text_field :url %>
+  </p>
+  <p>
+    <%= f.label :latitude %><br />
+    <%= f.text_field :latitude %>
+  </p>
+  <p>
+    <%= f.label :longitude %><br />
+    <%= f.text_field :longitude %>
+  </p>
+  <p>
+    <%= f.label :node_id %><br />
+    <%= f.text_field :node_id %>
+  </p>
+  <p>
+    <%= f.submit 'Create' %>
+  </p>
+<% end %>
+
+<%= link_to 'Back', events_path %>
\ No newline at end of file
diff --git a/app/views/events/show.html.erb b/app/views/events/show.html.erb
new file mode 100644
index 0000000..699765d
--- /dev/null
+++ b/app/views/events/show.html.erb
@@ -0,0 +1,48 @@
+<p>
+  <b>Start time:</b>
+  <%=h @event.start_time %>
+</p>
+
+<p>
+  <b>End time:</b>
+  <%=h @event.end_time %>
+</p>
+
+<p>
+  <b>Rrule:</b>
+  <%=h @event.rrule %>
+</p>
+
+<p>
+  <b>Custom rrule:</b>
+  <%=h @event.custom_rrule %>
+</p>
+
+<p>
+  <b>Allday:</b>
+  <%=h @event.allday %>
+</p>
+
+<p>
+  <b>Url:</b>
+  <%=h @event.url %>
+</p>
+
+<p>
+  <b>Latitude:</b>
+  <%=h @event.latitude %>
+</p>
+
+<p>
+  <b>Longitude:</b>
+  <%=h @event.longitude %>
+</p>
+
+<p>
+  <b>Node:</b>
+  <%=h @event.node_id %>
+</p>
+
+
+<%= link_to 'Edit', edit_event_path(@event) %> |
+<%= link_to 'Back', events_path %>
\ No newline at end of file
diff --git a/app/views/layouts/events.html.erb b/app/views/layouts/events.html.erb
new file mode 100644
index 0000000..93a6c0c
--- /dev/null
+++ b/app/views/layouts/events.html.erb
@@ -0,0 +1,17 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+       "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
+  <title>Events: <%= controller.action_name %></title>
+  <%= stylesheet_link_tag 'scaffold' %>
+</head>
+<body>
+
+<p style="color: green"><%= flash[:notice] %></p>
+
+<%= yield %>
+
+</body>
+</html>
diff --git a/app/views/layouts/occurrences.html.erb b/app/views/layouts/occurrences.html.erb
new file mode 100644
index 0000000..ab4aca6
--- /dev/null
+++ b/app/views/layouts/occurrences.html.erb
@@ -0,0 +1,17 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+       "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <meta http-equiv="content-type" content="text/html;charset=UTF-8" />
+  <title>Occurrences: <%= controller.action_name %></title>
+  <%= stylesheet_link_tag 'scaffold' %>
+</head>
+<body>
+
+<p style="color: green"><%= flash[:notice] %></p>
+
+<%= yield %>
+
+</body>
+</html>
diff --git a/app/views/occurrences/edit.html.erb b/app/views/occurrences/edit.html.erb
new file mode 100644
index 0000000..6a81188
--- /dev/null
+++ b/app/views/occurrences/edit.html.erb
@@ -0,0 +1,32 @@
+<h1>Editing occurrence</h1>
+
+<% form_for(@occurrence) do |f| %>
+  <%= f.error_messages %>
+
+  <p>
+    <%= f.label :summary %><br />
+    <%= f.text_field :summary %>
+  </p>
+  <p>
+    <%= f.label :start_time %><br />
+    <%= f.datetime_select :start_time %>
+  </p>
+  <p>
+    <%= f.label :end_time %><br />
+    <%= f.datetime_select :end_time %>
+  </p>
+  <p>
+    <%= f.label :node_id %><br />
+    <%= f.text_field :node_id %>
+  </p>
+  <p>
+    <%= f.label :event_id %><br />
+    <%= f.text_field :event_id %>
+  </p>
+  <p>
+    <%= f.submit 'Update' %>
+  </p>
+<% end %>
+
+<%= link_to 'Show', @occurrence %> |
+<%= link_to 'Back', occurrences_path %>
\ No newline at end of file
diff --git a/app/views/occurrences/index.html.erb b/app/views/occurrences/index.html.erb
new file mode 100644
index 0000000..06dbf07
--- /dev/null
+++ b/app/views/occurrences/index.html.erb
@@ -0,0 +1,28 @@
+<h1>Listing occurrences</h1>
+
+<table>
+  <tr>
+    <th>Summary</th>
+    <th>Start time</th>
+    <th>End time</th>
+    <th>Node</th>
+    <th>Event</th>
+  </tr>
+
+<% @occurrences.each do |occurrence| %>
+  <tr>
+    <td><%=h occurrence.summary %></td>
+    <td><%=h occurrence.start_time %></td>
+    <td><%=h occurrence.end_time %></td>
+    <td><%=h occurrence.node_id %></td>
+    <td><%=h occurrence.event_id %></td>
+    <td><%= link_to 'Show', occurrence %></td>
+    <td><%= link_to 'Edit', edit_occurrence_path(occurrence) %></td>
+    <td><%= link_to 'Destroy', occurrence, :confirm => 'Are you sure?', :method => :delete %></td>
+  </tr>
+<% end %>
+</table>
+
+<br />
+
+<%= link_to 'New occurrence', new_occurrence_path %>
\ No newline at end of file
diff --git a/app/views/occurrences/new.html.erb b/app/views/occurrences/new.html.erb
new file mode 100644
index 0000000..0a77af1
--- /dev/null
+++ b/app/views/occurrences/new.html.erb
@@ -0,0 +1,31 @@
+<h1>New occurrence</h1>
+
+<% form_for(@occurrence) do |f| %>
+  <%= f.error_messages %>
+
+  <p>
+    <%= f.label :summary %><br />
+    <%= f.text_field :summary %>
+  </p>
+  <p>
+    <%= f.label :start_time %><br />
+    <%= f.datetime_select :start_time %>
+  </p>
+  <p>
+    <%= f.label :end_time %><br />
+    <%= f.datetime_select :end_time %>
+  </p>
+  <p>
+    <%= f.label :node_id %><br />
+    <%= f.text_field :node_id %>
+  </p>
+  <p>
+    <%= f.label :event_id %><br />
+    <%= f.text_field :event_id %>
+  </p>
+  <p>
+    <%= f.submit 'Create' %>
+  </p>
+<% end %>
+
+<%= link_to 'Back', occurrences_path %>
\ No newline at end of file
diff --git a/app/views/occurrences/show.html.erb b/app/views/occurrences/show.html.erb
new file mode 100644
index 0000000..9e831cf
--- /dev/null
+++ b/app/views/occurrences/show.html.erb
@@ -0,0 +1,28 @@
+<p>
+  <b>Summary:</b>
+  <%=h @occurrence.summary %>
+</p>
+
+<p>
+  <b>Start time:</b>
+  <%=h @occurrence.start_time %>
+</p>
+
+<p>
+  <b>End time:</b>
+  <%=h @occurrence.end_time %>
+</p>
+
+<p>
+  <b>Node:</b>
+  <%=h @occurrence.node_id %>
+</p>
+
+<p>
+  <b>Event:</b>
+  <%=h @occurrence.event_id %>
+</p>
+
+
+<%= link_to 'Edit', edit_occurrence_path(@occurrence) %> |
+<%= link_to 'Back', occurrences_path %>
\ No newline at end of file