X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/d6e047d7d45ea76d56dccb53cc1fe1f5b54734d5..6690a9a09bca0afc3aac41e0d51789e965d9b9e7:/app/controllers/amf_controller.rb

diff --git a/app/controllers/amf_controller.rb b/app/controllers/amf_controller.rb
index ce3dc91d5..6e1b364d4 100644
--- a/app/controllers/amf_controller.rb
+++ b/app/controllers/amf_controller.rb
@@ -10,10 +10,16 @@
 #
 # == General structure
 #
-# Apart from the talk method (which distributes the requests from the
-# AMF message), each method generally takes arguments in the order they were 
-# sent by the Potlatch SWF. Do not assume typing has been preserved. Methods 
-# all return an array to the SWF.
+# Apart from the amf_read and amf_write methods (which distribute the requests
+# from the AMF message), each method generally takes arguments in the order 
+# they were sent by the Potlatch SWF. Do not assume typing has been preserved. 
+# Methods all return an array to the SWF.
+#
+# == API 0.6
+#
+# Note that this requires a patched version of composite_primary_keys 1.1.0
+# (see http://groups.google.com/group/compositekeys/t/a00e7562b677e193) 
+# if you are to run with POTLATCH_USE_SQL=false .
 # 
 # == Debugging
 # 
@@ -22,30 +28,27 @@
 #	return(-2,"message")		<-- also asks the user to e-mail me
 # 
 # To write to the Rails log, use RAILS_DEFAULT_LOGGER.info("message").
-#
-# == To do
-# 
-# - Check authentication
-# - Check the right things are being written to the database!
 
 class AmfController < ApplicationController
   require 'stringio'
 
   include Potlatch
 
+  # Help methods for checking boundary sanity and area size
+  include MapBoundary
+
   session :off
   before_filter :check_write_availability
 
-  # Main AMF handler: processes the raw AMF string (using AMF library) and
+  # Main AMF handlers: process the raw AMF string (using AMF library) and
   # calls each action (private method) accordingly.
+  # ** FIXME: refactor to reduce duplication of code across read/write
   
-  def talk
-	req=StringIO.new(request.raw_post+0.chr)	# Get POST data as request
-												# (cf http://www.ruby-forum.com/topic/122163)
-	req.read(2)									# Skip version indicator and client ID
-	results={}									# Results of each body
-	renumberednodes={}							# Shared across repeated putways
-	renumberedways={}							# Shared across repeated putways
+  def amf_read
+	req=StringIO.new(request.raw_post+0.chr)# Get POST data as request
+											# (cf http://www.ruby-forum.com/topic/122163)
+	req.read(2)								# Skip version indicator and client ID
+	results={}								# Results of each body
 
 	# Parse request
 
@@ -64,6 +67,7 @@ class AmfController < ApplicationController
 	  index=AMF.getstring(req)				#  | get index in response sequence
 	  bytes=AMF.getlong(req)				#  | get total size in bytes
 	  args=AMF.getvalue(req)				#  | get response (probably an array)
+      logger.info "Executing AMF #{message}:#{index}"
 
 	  case message
 		when 'getpresets';			results[index]=AMF.putdata(index,getpresets())
@@ -73,6 +77,39 @@ class AmfController < ApplicationController
 		when 'getrelation';			results[index]=AMF.putdata(index,getrelation(args[0].to_i))
 		when 'getway_old';			results[index]=AMF.putdata(index,getway_old(args[0].to_i,args[1].to_i))
 		when 'getway_history';		results[index]=AMF.putdata(index,getway_history(args[0].to_i))
+		when 'getnode_history';		results[index]=AMF.putdata(index,getnode_history(args[0].to_i))
+		when 'findgpx';				results[index]=AMF.putdata(index,findgpx(*args))
+		when 'findrelations';		results[index]=AMF.putdata(index,findrelations(*args))
+		when 'getpoi';				results[index]=AMF.putdata(index,getpoi(*args))
+	  end
+	end
+    logger.info("encoding AMF results")
+    sendresponse(results)
+  end
+
+  def amf_write
+	req=StringIO.new(request.raw_post+0.chr)
+	req.read(2)
+	results={}
+	renumberednodes={}						# Shared across repeated putways
+	renumberedways={}						# Shared across repeated putways
+
+	headers=AMF.getint(req)					# Read number of headers
+	headers.times do						# Read each header
+	  name=AMF.getstring(req)				#  |
+	  req.getc				   				#  | skip boolean
+	  value=AMF.getvalue(req)				#  |
+	  header["name"]=value					#  |
+	end
+
+	bodies=AMF.getint(req)					# Read number of bodies
+	bodies.times do							# Read each body
+	  message=AMF.getstring(req)			#  | get message name
+	  index=AMF.getstring(req)				#  | get index in response sequence
+	  bytes=AMF.getlong(req)				#  | get total size in bytes
+	  args=AMF.getvalue(req)				#  | get response (probably an array)
+
+	  case message
 		when 'putway';				r=putway(renumberednodes,*args)
 									renumberednodes=r[3]
 									if r[1] != r[2]
@@ -80,25 +117,43 @@ class AmfController < ApplicationController
 									end
 									results[index]=AMF.putdata(index,r)
 		when 'putrelation';			results[index]=AMF.putdata(index,putrelation(renumberednodes, renumberedways, *args))
-		when 'deleteway';			results[index]=AMF.putdata(index,deleteway(args[0],args[1].to_i))
+		when 'deleteway';			results[index]=AMF.putdata(index,deleteway(*args))
 		when 'putpoi';				results[index]=AMF.putdata(index,putpoi(*args))
-		when 'getpoi';				results[index]=AMF.putdata(index,getpoi(args[0].to_i))
+		when 'startchangeset';		results[index]=AMF.putdata(index,startchangeset(*args))
 	  end
 	end
+    sendresponse(results)
+  end
 
-	# Write out response
+  private
 
-	a,b=results.length.divmod(256)
-	render :content_type => "application/x-amf", :text => proc { |response, output| 
-	  output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr
-	  results.each do |k,v|
-		output.write(v)
+  # Start new changeset
+  
+  def startchangeset(usertoken, cstags, closeid, closecomment)
+	uid = getuserid(usertoken)
+	if !uid then return -1,"You are not logged in, so Potlatch can't write any changes to the database." end
+
+	# close previous changeset and add comment
+	if closeid
+	  cs = Changeset.find(closeid)
+	  cs.open = false
+	  if closecomment.empty?
+		cs.save!
+	  else
+	    cs.tags['comment']=closecomment
+	    cs.save_with_tags!
 	  end
-	}
+	end
+	
+	# open a new changeset
+	cs = Changeset.new
+	cs.tags = cstags
+	cs.user_id = uid
+	cs.created_at = Time.now
+	cs.save_with_tags!
+	return [0,cs.id]
   end
 
-  private
-
   # Return presets (default tags, localisation etc.):
   # uses POTLATCH_PRESETS global, set up in OSM::Potlatch.
 
@@ -113,27 +168,38 @@ class AmfController < ApplicationController
   def whichways(xmin, ymin, xmax, ymax) #:doc:
 	xmin -= 0.01; ymin -= 0.01
 	xmax += 0.01; ymax += 0.01
+    
+    # check boundary is sane and area within defined
+    # see /config/application.yml
+    begin
+      check_boundaries(xmin, ymin, xmax, ymax)
+    rescue Exception => err
+      return [-2,"Sorry - I can't get the map for that area."]
+    end
 
 	if POTLATCH_USE_SQL then
-	  way_ids = sql_find_way_ids_in_area(xmin, ymin, xmax, ymax)
+	  ways = sql_find_ways_in_area(xmin, ymin, xmax, ymax)
 	  points = sql_find_pois_in_area(xmin, ymin, xmax, ymax)
-	  relation_ids = sql_find_relations_in_area_and_ways(xmin, ymin, xmax, ymax, way_ids)
+	  relations = sql_find_relations_in_area_and_ways(xmin, ymin, xmax, ymax, ways.collect {|x| x[0]})
 	else
 	  # find the way ids in an area
-	  nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => "current_nodes.visible = 1", :include => :ways)
-	  way_ids = nodes_in_area.collect { |node| node.way_ids }.flatten.uniq
+	  nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => ["current_nodes.visible = ?", true], :include => :ways)
+	  ways = nodes_in_area.collect { |node| 
+		node.ways.collect { |w| [w.id,w.version] }.flatten
+	  }.uniq
+	  ways.delete([])
 
 	  # find the node ids in an area that aren't part of ways
 	  nodes_not_used_in_area = nodes_in_area.select { |node| node.ways.empty? }
-	  points = nodes_not_used_in_area.collect { |n| [n.id, n.lon, n.lat, n.tags_as_hash] }
+	  points = nodes_not_used_in_area.collect { |n| [n.id, n.lon, n.lat, n.tags] }
 
 	  # find the relations used by those nodes and ways
-	  relations = Relation.find_for_nodes(nodes_in_area.collect { |n| n.id }, :conditions => "visible = 1") +
-                  Relation.find_for_ways(way_ids, :conditions => "visible = 1")
-	  relation_ids = relations.collect { |relation| relation.id }.uniq
+	  relations = Relation.find_for_nodes(nodes_in_area.collect { |n| n.id }, :conditions => {:visible => true}) +
+                  Relation.find_for_ways(ways.collect { |w| w[0] }, :conditions => {:visible => true})
+	  relations = relations.collect { |relation| [relation.id,relation.version] }.uniq
 	end
 
-	[way_ids, points, relation_ids]
+	[0,ways, points, relations]
   end
 
   # Find deleted ways in current bounding box (similar to whichways, but ways
@@ -143,75 +209,179 @@ class AmfController < ApplicationController
 	xmin -= 0.01; ymin -= 0.01
 	xmax += 0.01; ymax += 0.01
 
-	nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => "current_nodes.visible = 0 AND current_ways.visible = 0", :include => :ways_via_history)
+    # check boundary is sane and area within defined
+    # see /config/application.yml
+    begin
+      check_boundaries(xmin, ymin, xmax, ymax)
+    rescue Exception => err
+      return [-2,"Sorry - I can't get the map for that area."]
+    end
+
+	nodes_in_area = Node.find_by_area(ymin, xmin, ymax, xmax, :conditions => ["current_ways.visible = ?", false], :include => :ways_via_history)
 	way_ids = nodes_in_area.collect { |node| node.ways_via_history_ids }.flatten.uniq
 
-	[way_ids]
+	[0,way_ids]
   end
 
   # Get a way including nodes and tags.
-  # Returns 0 (success), a Potlatch-style array of points, and a hash of tags.
+  # Returns the way id, a Potlatch-style array of points, a hash of tags, and the version number.
 
   def getway(wayid) #:doc:
 	if POTLATCH_USE_SQL then
 	  points = sql_get_nodes_in_way(wayid)
 	  tags = sql_get_tags_in_way(wayid)
+	  version = sql_get_way_version(wayid)
 	else
 	  # Ideally we would do ":include => :nodes" here but if we do that
 	  # then rails only seems to return the first copy of a node when a
 	  # way includes a node more than once
-	  way = Way.find(wayid)
+      begin
+	    way = Way.find(wayid)
+      rescue ActiveRecord::RecordNotFound
+        return [wayid,[],{}]
+      end
+
+      # check case where way has been deleted or doesn't exist
+      return [wayid,[],{}] if way.nil? or !way.visible
+
 	  points = way.nodes.collect do |node|
-		[node.lon, node.lat, node.id, nil, node.tags_as_hash]
+		nodetags=node.tags
+		nodetags.delete('created_by')
+		[node.lon, node.lat, node.id, nodetags]
 	  end
 	  tags = way.tags
+	  version = way.version
 	end
 
-	[wayid, points, tags]
+	[wayid, points, tags, version]
   end
 
   # Get an old version of a way, and all constituent nodes.
   #
-  # For undelete (version=0), always uses the most recent version of each node, 
-  # even if it's moved.  For revert (version=1+), uses the node in existence 
+  # For undelete (version<0), always uses the most recent version of each node, 
+  # even if it's moved.  For revert (version >= 0), uses the node in existence 
   # at the time, generating a new id if it's still visible and has been moved/
   # retagged.
+  #
+  # Returns:
+  # 0. success code, 
+  # 1. id, 
+  # 2. array of points, 
+  # 3. hash of tags, 
+  # 4. version, 
+  # 5. is this the current, visible version? (boolean)
 
   def getway_old(id, version) #:doc:
 	if version < 0
-	  old_way = OldWay.find(:first, :conditions => ['visible = 1 AND id = ?', id], :order => 'version DESC')
-	  points = old_way.get_nodes_undelete
+	  old_way = OldWay.find(:first, :conditions => ['visible = ? AND id = ?', true, id], :order => 'version DESC')
+	  points = old_way.get_nodes_undelete unless old_way.nil?
 	else
 	  old_way = OldWay.find(:first, :conditions => ['id = ? AND version = ?', id, version])
-	  points = old_way.get_nodes_revert
+	  points = old_way.get_nodes_revert unless old_way.nil?
 	end
 
-	old_way.tags['history'] = "Retrieved from v#{old_way.version}"
-
-	[0, id, points, old_way.tags, old_way.version]
+    if old_way.nil?
+      return [-1, id, [], {}, -1,0]
+    else
+	  curway=Way.find(id)
+	  old_way.tags['history'] = "Retrieved from v#{old_way.version}"
+	  return [0, id, points, old_way.tags, old_way.version, (curway.version==old_way.version and curway.visible)]
+    end
   end
   
-  # Find history of a way. Returns an array of previous versions.
+  # Find history of a way. Returns 'way', id, and 
+  # an array of previous versions.
 
   def getway_history(wayid) #:doc:
-	history = Way.find(wayid).old_ways.collect do |old_way|
-	  user = old_way.user.data_public? ? old_way.user.display_name : 'anonymous'
-	  [old_way.version, old_way.timestamp.strftime("%d %b %Y, %H:%M"), old_way.visible ? 1 : 0, user]
-	end
+    begin
+	  history = Way.find(wayid).old_ways.reverse.collect do |old_way|
+        user_object = old_way.changeset.user
+	    user = user_object.data_public? ? user_object.display_name : 'anonymous'
+	    uid  = user_object.data_public? ? user_object.id : 0
+	    [old_way.version, old_way.timestamp.strftime("%d %b %Y, %H:%M"), old_way.visible ? 1 : 0, user, uid]
+	  end
+
+	  return ['way',wayid,history]
+    rescue ActiveRecord::RecordNotFound
+      return ['way', wayid, []]
+    end
+  end
+
+  # Find history of a node. Returns 'node', id, and 
+  # an array of previous versions.
+
+  def getnode_history(nodeid) #:doc:
+    begin
+	  history = Node.find(nodeid).old_nodes.reverse.collect do |old_node|
+        user_object = old_node.changeset.user
+	    user = user_object.data_public? ? user_object.display_name : 'anonymous'
+	    uid  = user_object.data_public? ? user_object.id : 0
+	    [old_node.version, old_node.timestamp.strftime("%d %b %Y, %H:%M"), old_node.visible ? 1 : 0, user, uid]
+	  end
+
+	  return ['node',nodeid,history]
+    rescue ActiveRecord::RecordNotFound
+      return ['node', nodeid, []]
+    end
+  end
+
+  # Find GPS traces with specified name/id.
+  # Returns array listing GPXs, each one comprising id, name and description.
+  
+  def findgpx(searchterm, usertoken)
+	uid = getuserid(usertoken)
+	if !uid then return -1,"You must be logged in to search for GPX traces." end
 
-	[history]
+	gpxs = []
+	if searchterm.to_i>0 then
+	  gpx = Trace.find(searchterm.to_i, :conditions => ["visible=? AND (public=? OR user_id=?)",true,true,uid] )
+	  if gpx then
+	    gpxs.push([gpx.id, gpx.name, gpx.description])
+	  end
+	else
+	  Trace.find(:all, :limit => 21, :conditions => ["visible=? AND (public=? OR user_id=?) AND MATCH(name) AGAINST (?)",true,true,uid,searchterm] ).each do |gpx|
+		gpxs.push([gpx.id, gpx.name, gpx.description])
+	  end
+	end
+	gpxs
   end
 
   # Get a relation with all tags and members.
   # Returns:
   # 0. relation id,
   # 1. hash of tags,
-  # 2. list of members.
+  # 2. list of members,
+  # 3. version.
   
   def getrelation(relid) #:doc:
-	rel = Relation.find(relid)
+    begin
+	  rel = Relation.find(relid)
+    rescue ActiveRecord::RecordNotFound
+      return [relid, {}, []]
+    end
 
-	[relid, rel.tags, rel.members]
+    return [relid, {}, [], nil] if rel.nil? or !rel.visible
+	[relid, rel.tags, rel.members, rel.version]
+  end
+
+  # Find relations with specified name/id.
+  # Returns array of relations, each in same form as getrelation.
+  
+  def findrelations(searchterm)
+	rels = []
+	if searchterm.to_i>0 then
+	  rel = Relation.find(searchterm.to_i)
+	  if rel and rel.visible then
+	    rels.push([rel.id, rel.tags, rel.members])
+	  end
+	else
+	  RelationTag.find(:all, :limit => 11, :conditions => ["match(v) against (?)", searchterm] ).each do |t|
+		if t.relation.visible then
+	      rels.push([t.relation.id, t.relation.tags, t.relation.members])
+	    end
+	  end
+	end
+	rels
   end
 
   # Save a relation.
@@ -220,16 +390,17 @@ class AmfController < ApplicationController
   # 1. original relation id (unchanged),
   # 2. new relation id.
 
-  def putrelation(renumberednodes, renumberedways, usertoken, relid, tags, members, visible) #:doc:
+  def putrelation(renumberednodes, renumberedways, usertoken, changeset, relid, tags, members, visible) #:doc:
 	uid = getuserid(usertoken)
 	if !uid then return -1,"You are not logged in, so the relation could not be saved." end
 
 	relid = relid.to_i
-	visible = visible.to_i
+	visible = (visible.to_i != 0)
 
 	# create a new relation, or find the existing one
 	if relid <= 0
 	  rel = Relation.new
+	  rel.version = 0
 	else
 	  rel = Relation.find(relid)
 	end
@@ -241,18 +412,17 @@ class AmfController < ApplicationController
 	  if mid < 0
 		mid = renumberednodes[mid] if m[0] == 'node'
 		mid = renumberedways[mid] if m[0] == 'way'
-		if mid < 0
-		  return -2, "Negative ID unresolved"
-		end
 	  end
-	  typedmembers << [m[0], mid, m[2]]
+      if mid
+	    typedmembers << [m[0], mid, m[2]]
+	  end
 	end
 
 	# assign new contents
 	rel.members = typedmembers
 	rel.tags = tags
 	rel.visible = visible
-	rel.user_id = uid
+	rel.changeset_id = changeset
 
 	# check it then save it
 	# BUG: the following is commented out because it always fails on my
@@ -274,9 +444,10 @@ class AmfController < ApplicationController
   # 0. '0' (code for success),
   # 1. original way id (unchanged),
   # 2. new way id,
-  # 3. hash of renumbered nodes (old id=>new id)
+  # 3. hash of renumbered nodes (old id=>new id),
+  # 4. version
 
-  def putway(renumberednodes, usertoken, originalway, points, attributes) #:doc:
+  def putway(renumberednodes, usertoken, changeset, originalway, points, attributes) #:doc:
 
 	# -- Initialise and carry out checks
 	
@@ -296,6 +467,7 @@ class AmfController < ApplicationController
 
 	if originalway < 0
 	  way = Way.new
+	  way.version = 0	# otherwise +=1 breaks
 	  uniques = []
 	else
 	  way = Way.find(originalway)
@@ -317,20 +489,23 @@ class AmfController < ApplicationController
 	  elsif id < 0
 		# Create new node
 		node = Node.new
+		node.version = 0	# otherwise +=1 breaks
 		savenode = true
 	  else
 		node = Node.find(id)
+		nodetags=node.tags
+		nodetags.delete('created_by')
 		if !fpcomp(lat, node.lat) or !fpcomp(lon, node.lon) or
-		   Tags.join(n[4]) != node.tags or !node.visible?
+		   n[4] != nodetags or !node.visible?
 		  savenode = true
 		end
 	  end
 
 	  if savenode
-		node.user_id = uid
+		node.changeset_id = changeset
 	    node.lat = lat
         node.lon = lon
-	    node.tags = Tags.join(n[4])
+	    node.tags = n[4]
 	    node.visible = true
 	    node.save_with_history!
 
@@ -350,20 +525,22 @@ class AmfController < ApplicationController
 	  deleteitemrelations(n, 'node')
 
 	  node = Node.find(n)
-	  node.user_id = uid
+	  node.changeset_id = changeset
 	  node.visible = false
 	  node.save_with_history!
 	end
 
 	# -- Save revised way
 
-	way.tags = attributes
-	way.nds = nodes
-	way.user_id = uid
-	way.visible = true
-	way.save_with_history!
+	if way.tags!=attributes or way.nds!=nodes or !way.visible?
+	  way.tags = attributes
+	  way.nds = nodes
+	  way.changeset_id = changeset
+	  way.visible = true
+	  way.save_with_history!
+	end
 
-	[0, originalway, way.id, renumberednodes]
+	[0, originalway, way.id, renumberednodes, way.version]
   end
 
   # Save POI to the database.
@@ -371,9 +548,10 @@ class AmfController < ApplicationController
   # Returns:
   # 0. 0 (success),
   # 1. original node id (unchanged),
-  # 2. new node id.
+  # 2. new node id,
+  # 3. version.
 
-  def putpoi(usertoken, id, lon, lat, tags, visible) #:doc:
+  def putpoi(usertoken, changeset, id, lon, lat, tags, visible) #:doc:
 	uid = getuserid(usertoken)
 	if !uid then return -1,"You are not logged in, so the point could not be saved." end
 
@@ -389,49 +567,55 @@ class AmfController < ApplicationController
 	  end
 	else
 	  node = Node.new
+	  node.version = 0
 	end
 
-	node.user_id = uid
+	node.changeset_id = changeset
 	node.lat = lat
 	node.lon = lon
-	node.tags = Tags.join(tags)
+	node.tags = tags
 	node.visible = visible
 	node.save_with_history!
 
-	[0, id, node.id]
+	[0, id, node.id, node.version]
   end
 
   # Read POI from database
   # (only called on revert: POIs are usually read by whichways).
   #
-  # Returns array of id, long, lat, hash of tags.
+  # Returns array of id, long, lat, hash of tags, version.
 
-  def getpoi(id) #:doc:
-	n = Node.find(id)
+  def getpoi(id,version) #:doc:
+	if version>0 then
+	  n = OldNode.find(id, :conditions=>['version=?',version])
+	else
+	  n = Node.find(id)
+	end
 
 	if n
-	  return [n.id, n.lon, n.lat, n.tags_as_hash]
+	  return [n.id, n.lon, n.lat, n.tags, n.version]
 	else
-	  return [nil, nil, nil, '']
+	  return [nil, nil, nil, {}, nil]
 	end
   end
 
   # Delete way and all constituent nodes. Also removes from any relations.
   # Returns 0 (success), unchanged way id.
 
-  def deleteway(usertoken, way_id) #:doc:
-	uid = getuserid(usertoken)
-	if !uid then return -1,"You are not logged in, so the way could not be deleted." end
+  def deleteway(usertoken, changeset_id, way_id) #:doc:
+	if !getuserid(usertoken) then return -1,"You are not logged in, so the way could not be deleted." end
+
+	way_id = way_id.to_i
 
 	# FIXME: would be good not to make two history entries when removing
 	#		 two nodes from the same relation
-	user = User.find(uid)
 	way = Way.find(way_id)
 	way.unshared_node_ids.each do |n|
 	  deleteitemrelations(n, 'node')
 	end
+	deleteitemrelations(way_id, 'way')
 
-	way.delete_with_relations_and_nodes_and_history(user)  
+	way.delete_with_relations_and_nodes_and_history(changeset_id.to_i)
 
 	[0, way_id]
   end
@@ -465,10 +649,10 @@ class AmfController < ApplicationController
   end
 
   # Authenticate token
-  # (could be removed if no-one uses the username+password form)
+  # (can also be of form user:pass)
 
   def getuserid(token) #:doc:
-	if (token =~ /^(.+)\+(.+)$/) then
+	if (token =~ /^(.+)\:(.+)$/) then
 	  user = User.authenticate(:username => $1, :password => $2)
 	else
 	  user = User.authenticate(:token => token)
@@ -483,40 +667,63 @@ class AmfController < ApplicationController
 	return ((a/0.0000001).round==(b/0.0000001).round)
   end
 
+  # Send AMF response
+  
+  def sendresponse(results)
+	a,b=results.length.divmod(256)
+	render :content_type => "application/x-amf", :text => proc { |response, output| 
+	  # ** move amf writing loop into here - 
+	  # basically we read the messages in first (into an array of some sort),
+	  # then iterate through that array within here, and do all the AMF writing
+	  output.write 0.chr+0.chr+0.chr+0.chr+a.chr+b.chr
+	  results.each do |k,v|
+		output.write(v)
+	  end
+	}
+  end
+
 
   # ====================================================================
   # Alternative SQL queries for getway/whichways
 
-  def sql_find_way_ids_in_area(xmin,ymin,xmax,ymax)
+  def sql_find_ways_in_area(xmin,ymin,xmax,ymax)
 	sql=<<-EOF
-  SELECT DISTINCT current_way_nodes.id AS wayid
+  SELECT DISTINCT current_ways.id AS wayid,current_ways.version AS version
 		FROM current_way_nodes
   INNER JOIN current_nodes ON current_nodes.id=current_way_nodes.node_id
   INNER JOIN current_ways  ON current_ways.id =current_way_nodes.id
-	   WHERE current_nodes.visible=1 
-		 AND current_ways.visible=1 
+	   WHERE current_nodes.visible=TRUE 
+		 AND current_ways.visible=TRUE 
 		 AND #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
 	EOF
-	return ActiveRecord::Base.connection.select_all(sql).collect { |a| a['wayid'].to_i }
+	return ActiveRecord::Base.connection.select_all(sql).collect { |a| [a['wayid'].to_i,a['version'].to_i] }
   end
 	
   def sql_find_pois_in_area(xmin,ymin,xmax,ymax)
+	pois=[]
 	sql=<<-EOF
-		  SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lon,current_nodes.tags 
+		  SELECT current_nodes.id,current_nodes.latitude*0.0000001 AS lat,current_nodes.longitude*0.0000001 AS lon,current_nodes.version 
 			FROM current_nodes 
  LEFT OUTER JOIN current_way_nodes cwn ON cwn.node_id=current_nodes.id 
-		   WHERE current_nodes.visible=1
+		   WHERE current_nodes.visible=TRUE
 			 AND cwn.id IS NULL
 			 AND #{OSM.sql_for_area(ymin, xmin, ymax, xmax, "current_nodes.")}
 	EOF
-	return ActiveRecord::Base.connection.select_all(sql).collect { |n| [n['id'].to_i,n['lon'].to_f,n['lat'].to_f,tagstring_to_hash(n['tags'])] }
+	ActiveRecord::Base.connection.select_all(sql).each do |row|
+	  poitags={}
+	  ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_node_tags WHERE id=#{row['id']}").each do |n|
+		poitags[n['k']]=n['v']
+	  end
+	  pois << [row['id'].to_i, row['lon'].to_f, row['lat'].to_f, poitags, row['version'].to_i]
+	end
+	pois
   end
 	
   def sql_find_relations_in_area_and_ways(xmin,ymin,xmax,ymax,way_ids)
 	# ** It would be more Potlatchy to get relations for nodes within ways
 	#    during 'getway', not here
 	sql=<<-EOF
-	  SELECT DISTINCT cr.id AS relid 
+	  SELECT DISTINCT cr.id AS relid,cr.version AS version 
 		FROM current_relations cr
   INNER JOIN current_relation_members crm ON crm.id=cr.id 
   INNER JOIN current_nodes cn ON crm.member_id=cn.id AND crm.member_type='node' 
@@ -525,28 +732,33 @@ class AmfController < ApplicationController
 	unless way_ids.empty?
 	  sql+=<<-EOF
 	   UNION
-	  SELECT DISTINCT cr.id AS relid
+	  SELECT DISTINCT cr.id AS relid,cr.version AS version
 		FROM current_relations cr
   INNER JOIN current_relation_members crm ON crm.id=cr.id
 	   WHERE crm.member_type='way' 
 		 AND crm.member_id IN (#{way_ids.join(',')})
 	  EOF
 	end
-	return ActiveRecord::Base.connection.select_all(sql).collect { |a| a['relid'].to_i }.uniq
+	return ActiveRecord::Base.connection.select_all(sql).collect { |a| [a['relid'].to_i,a['version'].to_i] }
   end
 	
   def sql_get_nodes_in_way(wayid)
 	points=[]
 	sql=<<-EOF
-		SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,current_nodes.id,tags 
+		SELECT latitude*0.0000001 AS lat,longitude*0.0000001 AS lon,current_nodes.id 
 		  FROM current_way_nodes,current_nodes 
 		 WHERE current_way_nodes.id=#{wayid.to_i} 
 		   AND current_way_nodes.node_id=current_nodes.id 
-		   AND current_nodes.visible=1
+		   AND current_nodes.visible=TRUE
 	  ORDER BY sequence_id
 	  EOF
 	ActiveRecord::Base.connection.select_all(sql).each do |row|
-	  points << [row['lon'].to_f,row['lat'].to_f,row['id'].to_i,nil,tagstring_to_hash(row['tags'])]
+	  nodetags={}
+	  ActiveRecord::Base.connection.select_all("SELECT k,v FROM current_node_tags WHERE id=#{row['id']}").each do |n|
+		nodetags[n['k']]=n['v']
+	  end
+	  nodetags.delete('created_by')
+	  points << [row['lon'].to_f,row['lat'].to_f,row['id'].to_i,nodetags]
 	end
 	points
   end
@@ -559,6 +771,9 @@ class AmfController < ApplicationController
 	tags
   end
 
+  def sql_get_way_version(wayid)
+    ActiveRecord::Base.connection.select_one("SELECT version FROM current_ways WHERE id=#{wayid.to_i}")
+  end
 end
 
 # Local Variables: