added application.yml, refactored map method

app/controllers/api_controller.rb

@@ -4,16 +4,19 @@ class ApiController < ApplicationController
   before_filter :check_read_availability, :except => [:capabilities]
   after_filter :compress_output
 
+  # Help methods for checking boundary sanity and area size
+  include MapBoundary
+
   #COUNT is the number of map requests to allow before exiting and starting a new process
   @@count = COUNT
 
   # The maximum area you're allowed to request, in square degrees
   MAX_REQUEST_AREA = 0.25
 
-
   # Number of GPS trace/trackpoints returned per-page
   TRACEPOINTS_PER_PAGE = 5000
 
+  
   def trackpoints
     @@count+=1
     #retrieve the page number
@@ -103,46 +106,31 @@ class ApiController < ApplicationController
 
     # Figure out the bbox
     bbox = params['bbox']
+
     unless bbox and bbox.count(',') == 3
+      # alternatively: report_error(TEXT['boundary_parameter_required']
       report_error("The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat")
       return
     end
 
     bbox = bbox.split(',')
 
-    min_lon = bbox[0].to_f
-    min_lat = bbox[1].to_f
-    max_lon = bbox[2].to_f
-    max_lat = bbox[3].to_f
+    min_lon, min_lat, max_lon, max_lat = *bbox.map{|b| b.to_f }
 
-    # check the bbox is sane
-    unless min_lon <= max_lon
-      report_error("The minimum longitude must be less than the maximum longitude, but it wasn't")
-      return
-    end
-    unless min_lat <= max_lat
-      report_error("The minimum latitude must be less than the maximum latitude, but it wasn't")
-      return
-    end
-    unless min_lon >= -180 && min_lat >= -90 && max_lon <= 180 && max_lat <= 90
-      report_error("The latitudes must be between -90 and 90, and longitudes between -180 and 180")
-      return
-    end
-
-    # check the bbox isn't too large
-    requested_area = (max_lat-min_lat)*(max_lon-min_lon)
-    if requested_area > MAX_REQUEST_AREA
-      report_error("The maximum bbox size is " + MAX_REQUEST_AREA.to_s + 
-        ", and your request was too large. Either request a smaller area, or use planet.osm")
+    # check boundary is sane and area within defined
+    # see /config/application.yml
+    begin
+      check_boundaries(min_lon, min_lat, max_lon, max_lat)
+    rescue Exception => err
+      report_error(err.message)
       return
     end
 
     # get all the nodes
-    nodes = Node.find_by_area(min_lat, min_lon, max_lat, max_lon, :conditions => "visible = 1")
+    nodes = Node.find_by_area(min_lat, min_lon, max_lat, max_lon, :conditions => "visible = 1", :limit => APP_CONFIG['max_number_of_nodes']+1)
 
     node_ids = nodes.collect {|node| node.id }
-
-    if node_ids.length > 50_000
+    if node_ids.length > APP_CONFIG['max_number_of_nodes']
       report_error("You requested too many nodes (limit is 50,000). Either request a smaller area, or use planet.osm")
       return
     end

config/application.yml

@@ -0,0 +1,16 @@
+standard_settings: &standard_settings
+  # The maximum area you're allowed to request, in square degrees
+  max_request_area: 0.25
+  # Number of GPS trace/trackpoints returned per-page
+  tracepoints_per_page: 5000
+  # Maximum number of nodes
+  max_number_of_nodes: 50000
+ 
+development:
+  <<: *standard_settings
+
+production:
+  <<: *standard_settings
+
+test:
+  <<: *standard_settings

config/initializers/load_configs.rb

@@ -0,0 +1,10 @@
+# This file loads various yml configuration files
+
+# Load application config
+APP_CONFIG = YAML.load(File.read(RAILS_ROOT + "/config/application.yml"))[RAILS_ENV]
+# This will let you more easily use helpers based on url_for in your mailers.
+ActionMailer::Base.default_url_options[:host] = APP_CONFIG['host']
+
+# Load texts in a particular language
+TEXT = YAML.load(File.read(RAILS_ROOT + "/config/text_outputs/en.yml"))
+

config/text_outputs/en.yml

@@ -0,0 +1,3 @@
+boundary_parameter_required: "The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat"
+
+

script/yaml_to_spec

@@ -0,0 +1,21 @@
+#!/usr/bin/env ruby
+require "yaml"
+
+buffer = []
+STDIN.each_line { |l| buffer << l }
+
+contexts = YAML::load(buffer.join("\n"))
+
+contexts.each do |context,specifications|
+  puts ""
+  puts "context \"#{context}\" do"
+  puts ""
+  specifications.each do |specification|
+    puts "  specify \"#{specification}\" do"
+    puts "    violated \"no assertions performed\""
+    puts "  end"
+    puts ""
+  end
+  puts "end"
+end
+

spec/controllers/api_controller_spec.rb

@@ -10,7 +10,7 @@ module ApiMapHelpers
       when :valid
         '-0.3565352711206896,51.464740877658045,-0.2686446461206896,51.508686190158045'
       when :min_lat_more_than_max_lat
-        '-0.3565352711206896,-0.2686446461206896,51.508686190158045,51.464740877658045'
+        '-0.3565352711206896,51.508686190158045,-0.2686446461206896,51.464740877658045'
       when :min_lon_more_than_max_lon
         '51.464740877658045,-0.2686446461206896,51.508686190158045,-0.3565352711206896'
     end