api06: Preliminary support for diff uploading. This will not return anything

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

diff --git a/app/controllers/changeset_controller.rb b/app/controllers/changeset_controller.rb
index 1041c74692eaf09d17b07dff3edc8f0da68e79f4..19d1591a0405d1ce731969db5a4e0ca4b302862f 100644 (file)
--- a/app/controllers/changeset_controller.rb
+++ b/app/controllers/changeset_controller.rb
@@ -3,9 +3,10 @@
 class ChangesetController < ApplicationController
   require 'xml/libxml'
 
-  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]
+  before_filter :authorize, :only => [:create, :update, :delete, :upload]
+  before_filter :check_write_availability, :only => [:create, :update, :delete, :upload]
+  before_filter :check_read_availability, :except => [:create, :update, :delete, :upload]
+  after_filter :compress_output
 
   # Create a changeset from XML.
   def create
@@ -23,4 +24,91 @@ class ChangesetController < ApplicationController
       render :nothing => true, :status => :method_not_allowed
     end
   end
+
+  def create_prim(ids, prim, nd)
+    prim.version = 0
+    prim.user_id = @user.id
+    prim.visible = true
+    prim.save_with_history!
+
+    ids[nd['id'].to_i] = prim.id
+  end
+
+  def fix_way(w, node_ids)
+    w.nds.each { |nd|
+      new_id = node_ids[nd.node_id]
+      nd.node_id = new_id unless new_id.nil?
+    }
+  end
+
+  def fix_rel(r, ids)
+    r.members.each { |memb|
+      new_id = ids[memb.member_type][memb.member_id]
+      nd.member_id = new_id unless new_id.nil?
+    }
+  end
+
+  def upload
+    if not request.put?
+      render :nothing => true, :status => :method_not_allowed
+      return
+    end
+
+    # FIXME: this should really be done without loading the whole XML file
+    # into memory.
+    p = XML::Parser.new
+    p.string  = request.raw_post
+    doc = p.parse
+
+    node_ids, way_ids, rel_ids = {}, {}, {}
+    ids = {"node"=>node_ids, "way"=>way_ids, "relation"=>rel_ids}
+
+    Changeset.transaction do
+      doc.find('//osm/create/node').each do |nd|
+       create_prim node_ids, Node.from_xml_node(nd, true), nd
+      end
+      doc.find('//osm/create/way').each do |nd|
+       way = Way.from_xml_node(nd, true)
+       raise OSM::APIPreconditionFailedError.new if !way.preconditions_ok?
+       create_prim way_ids, fix_way(way, node_ids), nd
+      end
+      doc.find('//osm/create/relation').each do |nd|
+       relation = Relation.from_xml_node(nd, true)
+       raise OSM::APIPreconditionFailedError.new if !way.preconditions_ok?
+       create_prim relation_ids, fix_rel(relation, ids), nd
+      end
+
+      doc.find('//osm/modify/node').each do |nd|
+       unless NodeController.update_internal nil, Node.from_xml_node(nd)
+         raise OSM::APIPreconditionFailedError.new
+       end
+      end
+      doc.find('//osm/modify/way').each do |nd|
+       unless WayController.update_internal nil, fix_way(Way.from_xml_node(nd), node_ids)
+         raise OSM::APIPreconditionFailedError.new
+       end
+      end
+      doc.find('//osm/modify/relation').each do |nd|
+       unless RelationController.update_internal nil, fix_rel(Relation.from_xml_node(nd), ids)
+         raise OSM::APIPreconditionFailedError.new
+       end
+      end
+
+      doc.find('//osm/delete/node').each do |nd|
+       unless NodeController.delete_internal nil, Node.from_xml_node(n)
+         raise OSM::APIPreconditionFailedError.new
+       end
+      end
+      doc.find('//osm/delete/way').each do |nd|
+       Way.from_xml_node(nd).delete_with_relations_and_history(@user)
+      end
+      doc.find('//osm/delete/relation').each do |nd|
+       unless RelationController.delete_internal nil, fix_rel(Relation.from_xml_node(nd), ids)
+         raise OSM::APIPreconditionFailedError.new
+       end
+      end
+    end
+
+    render :text => "Ok, Fine. Upload worked without errors.\n", :status => 200
+  end
 end