X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/84f3668fc4c49f4d3d6faa89990aed5e03b8592d..f7d2bf9e3903b309c79290db1b75f9a0e9b15b0a:/app/controllers/node_controller.rb

diff --git a/app/controllers/node_controller.rb b/app/controllers/node_controller.rb
index a5f20acea..edc3675e5 100644
--- a/app/controllers/node_controller.rb
+++ b/app/controllers/node_controller.rb
@@ -1,162 +1,111 @@
+# The NodeController is the RESTful interface to Node objects
+
 class NodeController < ApplicationController
   require 'xml/libxml'
 
-  before_filter :authorize
+  session :off
+  before_filter :authorize, :only => [:create, :update, :delete]
+  before_filter :check_write_availability, :only => [:create, :update, :delete]
+  before_filter :check_read_availability, :except => [:create, :update, :delete]
+  after_filter :compress_output
 
+  # Create a node from XML.
   def create
     if request.put?
-      p = XML::Parser.new
-      p.string = request.raw_post
-      doc = p.parse
-
-      doc.find('//osm/node').each do |pt|
-        lat = pt['lat'].to_f
-        lon = pt['lon'].to_f
-        node_id = pt['id'].to_i
-
-        if lat > 90 or lat < -90 or lon > 180 or lon < -180  or node_id != 0
-          render :nothing => true, :status => 400 # BAD REQUEST
-          return
-        end
-
-        tags = []
-
-        pt.find('tag').each do |tag|
-          tags << [tag['k'],tag['v']]
-        end
-        tags = tags.collect { |k,v| "#{k}=#{v}" }.join(';')
-        tags = '' if tags.nil?
-
-        now = Time.now
+      node = Node.from_xml(request.raw_post, true)
 
-        node = Node.new
-        node.latitude = lat
-        node.longitude = lon
-        node.visible = 1
-        node.tags = tags
-        node.timestamp = now
+      if node
         node.user_id = @user.id
+        node.visible = true
+        node.save_with_history!
 
-        #FIXME add a node to the old nodes table too
-
-        if node.save
-          render :text => node.id
-        else
-          render :nothing => true, :status => 500
-        end
-
-        return
+        render :text => node.id.to_s, :content_type => "text/plain"
+      else
+        render :nothing => true, :status => :bad_request
       end
+    else
+      render :nothing => true, :status => :method_not_allowed
     end
-
-    render :nothing => true, :status => 400 # if we got here the doc didnt parse
   end
 
-  def rest
-    unless Node.exists?(params[:id])
-      render :nothing => true, :status => 400
-      return
+  # Dump the details on a node given in params[:id]
+  def read
+    begin
+      node = Node.find(params[:id])
+      if node.visible
+        response.headers['Last-Modified'] = node.timestamp.rfc822
+        render :text => node.to_xml.to_s, :content_type => "text/xml"
+       else
+        render :text => "", :status => :gone
+      end
+    rescue ActiveRecord::RecordNotFound
+      render :nothing => true, :status => :not_found
     end
+  end
 
-    node = Node.find(params[:id])
-
-
-    case request.method
-    when :get
-      doc = XML::Document.new
-
-      doc.encoding = "UTF-8"  
-      root = XML::Node.new 'osm'
-      root['version'] = '0.4'
-      root['generator'] = 'OpenStreetMap server'
-      doc.root = root
-      el1 = XML::Node.new 'node'
-      el1['id'] = node.id.to_s
-      el1['lat'] = node.latitude.to_s
-      el1['lon'] = node.longitude.to_s
-      split_tags(el1, node.tags)
-      el1['visible'] = node.visible.to_s
-      el1['timestamp'] = node.timestamp.xmlschema
-      root << el1
-
-      render :text => doc.to_s
+  # Update a node from given XML
+  def update
+    begin
+      node = Node.find(params[:id])
+      new_node = Node.from_xml(request.raw_post)
 
-    when :delete
-      #
-      # DELETE
-      #
+      if new_node and new_node.id == node.id
+        node.user_id = @user.id
+        node.latitude = new_node.latitude 
+        node.longitude = new_node.longitude
+        node.tags = new_node.tags
+        node.visible = true
+        node.save_with_history!
 
-      if node.visible
-        node.visible = 0
-        node.save
         render :nothing => true
       else
-        render :nothing => true, :status => 410
+        render :nothing => true, :status => :bad_request
       end
+    rescue ActiveRecord::RecordNotFound
+      render :nothing => true, :status => :not_found
+    end
+  end
 
-    when :put
-      #
-      # PUT
-      #
-
-      p = XML::Parser.new
-      p.string = request.raw_post
-      doc = p.parse
-
-      doc.find('//osm/node').each do |pt|
-        lat = pt['lat'].to_f
-        lon = pt['lon'].to_f
-        node_id = pt['id'].to_i
-
-        if lat > 90 or lat < -90 or lon > 180 or lon < -180  or node_id != params[:id]
-          render :nothing => true, :status => 400
-          return
-        end
-
-        tags = []
-
-        pt.find('tag').each do |tag|
-          tags << [tag['k'],tag['v']]
-        end
-        tags = tags.collect { |k,v| "#{k}=#{v}" }.join(';')
-        tags = '' if tags.nil?
-
-        now = Time.now
-
-        node.latitude = lat
-        node.longitude = lon
-        node.visible = 1
-        node.tags = tags
-        node.timestamp = now
-        node.user_id = @user.id
-
-        #FIXME add a node to the old nodes table too
+  # Delete a node. Doesn't actually delete it, but retains its history in a wiki-like way.
+  # FIXME remove all the fricking SQL
+  def delete
+    begin
+      node = Node.find(params[:id])
 
-        if node.save
-          render :text => node.id
+      if node.visible
+        if WayNode.find(:first, :joins => "INNER JOIN current_ways ON current_ways.id = current_way_nodes.id", :conditions => [ "current_ways.visible = 1 AND current_way_nodes.node_id = ?", node.id ])
+          render :text => "", :status => :precondition_failed
+        elsif RelationMember.find(:first, :joins => "INNER JOIN current_relations ON current_relations.id=current_relation_members.id", :conditions => [ "visible = 1 AND member_type='node' and member_id=?", params[:id]])
+          render :text => "", :status => :precondition_failed
         else
-          render :nothing => true, :status => 500
+          node.user_id = @user.id
+          node.visible = 0
+          node.save_with_history!
+
+          render :nothing => true
         end
+      else
+        render :text => "", :status => :gone
       end
+    rescue ActiveRecord::RecordNotFound
+      render :nothing => true, :status => :not_found
     end
   end
 
-  private
-  def split_tags(el, tags)
-    tags.split(';').each do |tag|
-      parts = tag.split('=')
-      key = ''
-      val = ''
-      key = parts[0].strip unless parts[0].nil?
-      val = parts[1].strip unless parts[1].nil?
-      if key != '' && val != ''
-        el2 = Node.new('tag')
-        el2['k'] = key.to_s
-        el2['v'] = val.to_s
-        el << el2
-      end
-    end
-  end
+  # WTF does this do?
+  def nodes
+    ids = params['nodes'].split(',').collect { |n| n.to_i }
+
+    if ids.length > 0
+      doc = OSM::API.new.get_xml_doc
 
+      Node.find(ids).each do |node|
+        doc.root << node.to_xml_node
+      end 
 
+      render :text => doc.to_s, :content_type => "text/xml"
+    else
+      render :nothing => true, :status => :bad_request
+    end
+  end
 end