initial copy for 0.5 branch (drop segments & add relationships)

[rails.git] / app / controllers / segment_controller.rb

diff --git a/app/controllers/segment_controller.rb b/app/controllers/segment_controller.rb
index 21de13be84f56ab1bb2ce9d579c5886c167ed60a..42e939a655e1a2f5f8ba7913882815c03e759742 100644 (file)
--- a/app/controllers/segment_controller.rb
+++ b/app/controllers/segment_controller.rb
@@ -1,74 +1,149 @@
 class SegmentController < ApplicationController
-
   require 'xml/libxml'
 
-  before_filter :authorize
+  session :off
+  before_filter :authorize, :only => [:create, :update, :delete]
+  before_filter :check_availability, :only => [:create, :update, :delete]
+  after_filter :compress_output
 
   def create
     if request.put?
       segment = Segment.from_xml(request.raw_post, true)
 
       if segment
-        segment.user_id = @user.id
-        if segment.save_with_history
-
-          render :text => segment.id
+        if segment.node_a == segment.node_b
+          render :nothing => true, :status => :expectation_failed
+        elsif !segment.preconditions_ok?
+          render :nothing => true, :status => :precondition_failed
         else
-          render :nothing => true, :status => 500
+          segment.user_id = @user.id
+          segment.from_node = Node.find(segment.node_a.to_i)
+          segment.to_node = Node.find(segment.node_b.to_i)
+
+          if segment.save_with_history
+            render :text => segment.id.to_s, :content_type => "text/plain"
+          else
+            render :nothing => true, :status => :internal_server_error
+          end
         end
-        return
-
       else
-        render :nothing => true, :status => 400 # if we got here the doc didnt parse
-        return
+        render :nothing => true, :status => :bad_request
       end
+    else
+      render :nothing => true, :status => :method_not_allowed
     end
-
-    render :nothing => true, :status => 500 # something went very wrong
   end
 
-  def rest
-    unless Segment.exists?(params[:id])
-      render :nothing => true, :status => 400
-      return
+  def read
+    begin
+      segment = Segment.find(params[:id])
+
+      if segment.visible
+        render :text => segment.to_xml.to_s, :content_type => "text/xml"
+      else
+        render :nothing => true, :status => :gone
+      end
+    rescue ActiveRecord::RecordNotFound
+      render :nothing => true, :status => :not_found
+    rescue
+      render :nothing => true, :status => :internal_server_error
     end
+  end
 
-    segment = Segment.find(params[:id])
+  def update
+    begin
+      segment = Segment.find(params[:id])
 
-    case request.method
+      if segment.visible
+        new_segment = Segment.from_xml(request.raw_post)
+
+        if new_segment and new_segment.id == segment.id
+          if new_segment.node_a == new_segment.node_b
+            render :nothing => true, :status => :expectation_failed
+          elsif !new_segment.preconditions_ok?
+            render :nothing => true, :status => :precondition_failed
+          else
+            segment.user_id = @user.id
+            segment.node_a = new_segment.node_a
+            segment.node_b = new_segment.node_b
+            segment.tags = new_segment.tags
+            segment.visible = new_segment.visible
+
+            if segment.save_with_history
+              render :nothing => true
+            else
+              render :nothing => true, :status => :internal_server_error
+            end
+          end
+        else
+          render :nothing => true, :status => :bad_request
+        end
+      else
+        render :nothing => true, :status => :gone
+      end
+    rescue ActiveRecord::RecordNotFound
+      render :nothing => true, :status => :not_found
+    rescue
+      render :nothing => true, :status => :internal_server_error
+    end
+  end
 
-    when :get
-      render :text => segment.to_xml.to_s
-      return
+  def delete
+    begin
+      segment = Segment.find(params[:id])
 
-    when :delete
       if segment.visible
-        segment.visible = 0
-        segment.save_with_history
-        render :nothing => true
+        if WaySegment.find(:first, :joins => "INNER JOIN current_ways ON current_ways.id = current_way_segments.id", :conditions => [ "current_ways.visible = 1 AND current_way_segments.segment_id = ?", segment.id ])
+          render :nothing => true, :status => :precondition_failed
+        else
+          segment.user_id = @user.id
+          segment.visible = 0
+
+          if segment.save_with_history
+            render :nothing => true
+          else
+            render :nothing => true, :status => :internal_server_error
+          end
+        end
       else
-        render :nothing => true, :status => 410
+        render :nothing => true, :status => :gone
       end
+    rescue ActiveRecord::RecordNotFound
+      render :nothing => true, :status => :not_found
+    rescue
+      render :nothing => true, :status => :internal_server_error
+    end
+  end
 
-    when :put
-      new_segment = Segment.from_xml(request.raw_post)
+  def segments
+    ids = params['segments'].split(',').collect { |s| s.to_i }
 
-      segment.timestamp = Time.now
-      segment.user_id = @user.id
+    if ids.length > 0
+      doc = OSM::API.new.get_xml_doc
 
-      segment.latitude = new_segment.latitude 
-      segment.longitude = new_segment.longitude
-      segment.tags = new_segment.tags
+      Segment.find(ids).each do |segment|
+        doc.root << segment.to_xml_node
+      end 
 
-      if segment.id == new_segment.id and segment.save_with_history
-        render :nothing => true, :status => 200
-      else
-        render :nothing => true, :status => 500
-      end
-      return
+      render :text => doc.to_s, :content_type => "text/xml"
+    else
+      render :nothing => true, :status => :bad_request
     end
-
   end
 
+  def segments_for_node
+    segmentids = Segment.find(:all, :conditions => ['node_a = ? OR node_b = ?', params[:id], params[:id]]).collect { |s| s.id }.uniq
 
+    if segmentids.length > 0
+      doc = OSM::API.new.get_xml_doc
+
+      Segment.find(segmentids).each do |segment|
+        doc.root << segment.to_xml_node
+      end
+
+      render :text => doc.to_s, :content_type => "text/xml"
+    else
+      render :nothing => true, :status => :bad_request
+    end
+  end
 end