Correct calculation of reciprocal angles.
[rails.git] / app / controllers / geocoder_controller.rb
index 9349eaca4dfc96154a51f05f30d3c2014062e8e9..8abcbdc4445a773acaad8bfe2506e90e16b609ba 100644 (file)
@@ -4,18 +4,48 @@ class GeocoderController < ApplicationController
   require 'rexml/document'
 
   def search
-    @query = params[:query]
-    @results = Array.new
-
-    if @query.match(/^\d{5}(-\d{4})?$/)
-      @results.push search_us_postcode(@query)
-    elsif @query.match(/(GIR 0AA|[A-PR-UWYZ]([0-9]{1,2}|([A-HK-Y][0-9]|[A-HK-Y][0-9]([0-9]|[ABEHMNPRV-Y]))|[0-9][A-HJKS-UW]) [0-9][ABD-HJLNP-UW-Z]{2})/i)
-      @results.push search_uk_postcode(@query)
-    elsif @query.match(/[A-Z]\d[A-Z]\s*\d[A-Z]\d/i)
-      @results.push search_ca_postcode(@query)
+    query = params[:query]
+    results = Array.new
+
+    if query.match(/^\d{5}(-\d{4})?$/)
+      results.push search_us_postcode(query)
+    elsif query.match(/(GIR 0AA|[A-PR-UWYZ]([0-9]{1,2}|([A-HK-Y][0-9]|[A-HK-Y][0-9]([0-9]|[ABEHMNPRV-Y]))|[0-9][A-HJKS-UW])\s*[0-9][ABD-HJLNP-UW-Z]{2})/i)
+      results.push search_uk_postcode(query)
+    elsif query.match(/[A-Z]\d[A-Z]\s*\d[A-Z]\d/i)
+      results.push search_ca_postcode(query)
     else
-      @results.push search_osm_namefinder(@query)
-      @results.push search_geonames(@query)
+      results.push search_osm_namefinder(query)
+      results.push search_geonames(query)
+    end
+
+    results_count = count_results(results)
+
+    render :update do |page|
+      page.replace_html :search_results_content, :partial => 'results', :object => results
+
+      if results_count == 1
+        position = results.collect { |s| s[:results] }.compact.flatten[0]
+        page.call "setPosition", position[:lat], position[:lon], position[:zoom]
+      else
+        page.call "openSearchResults"
+      end
+    end
+  end
+  
+  def description
+    results = Array.new
+
+    lat = params[:lat]
+    lon = params[:lon]
+
+    results.push description_osm_namefinder("cities", lat, lon, 2)
+    results.push description_osm_namefinder("towns", lat, lon, 4)
+    results.push description_osm_namefinder("places", lat, lon, 10)
+    results.push description_geonames(lat, lon)
+
+    render :update do |page|
+      page.replace_html :search_results_content, :partial => 'results', :object => results
+      page.call "openSearchResults"
     end
   end
 
@@ -31,7 +61,8 @@ private
     unless response.match(/couldn't find this zip/)
       data = response.split(/\s*,\s+/) # lat,long,town,state,zip
       results.push({:lat => data[0], :lon => data[1], :zoom => 12,
-                    :description => "#{data[2]}, #{data[3]}, #{data[4]}"})
+                    :prefix => "#{data[2]}, #{data[3]}, ",
+                    :name => data[4]})
     end
 
     return { :source => "Geocoder.us", :url => "http://geocoder.us/", :results => results }
@@ -50,7 +81,7 @@ private
       dataline = response.split(/\n/)[1]
       data = dataline.split(/,/) # easting,northing,postcode,lat,long
       results.push({:lat => data[3], :lon => data[4], :zoom => 12,
-                    :description => data[2].gsub(/'/, "")})
+                    :name => data[2].gsub(/'/, "")})
     end
 
     return { :source => "NPEMap / FreeThePostcode", :url => "http://www.npemap.org.uk/", :results => results }
@@ -69,7 +100,7 @@ private
       results.push({:lat => response.get_text("geodata/latt").to_s,
                     :lon => response.get_text("geodata/longt").to_s,
                     :zoom => 12,
-                    :description => query.upcase})
+                    :name => query.upcase})
     end
 
     return { :source => "Geocoder.CA", :url => "http://geocoder.ca/", :results => results }
@@ -91,11 +122,24 @@ private
       place = named.elements["place/named"] || named.elements["nearestplaces/named"]
       type = named.attributes["info"].to_s.capitalize
       name = named.attributes["name"].to_s
-      distance = format_distance(place.attributes["approxdistance"].to_i)
-      direction = format_direction(place.attributes["direction"].to_i)
-      placename = place.attributes["name"].to_s
+      description = named.elements["description"].to_s
+      if name.empty?
+        prefix = ""
+        name = type
+      else
+        prefix = "#{type} "
+      end
+      if place
+        distance = format_distance(place.attributes["approxdistance"].to_i)
+        direction = format_direction(place.attributes["direction"].to_i)
+        placename = place.attributes["name"].to_s
+        suffix = ", #{distance} #{direction} of #{placename}"
+      else
+        suffix = ""
+      end
       results.push({:lat => lat, :lon => lon, :zoom => zoom,
-                    :description => "#{type} #{name}, #{distance} #{direction} of #{placename}"})
+                    :prefix => prefix, :name => name, :suffix => suffix,
+                    :description => description})
     end
 
     return { :source => "OpenStreetMap Namefinder", :url => "http://www.frankieandshadow.com/osm/", :results => results }
@@ -116,7 +160,8 @@ private
       name = geoname.get_text("name").to_s
       country = geoname.get_text("countryName").to_s
       results.push({:lat => lat, :lon => lon, :zoom => 12,
-                    :description => "#{name}, #{country}"})
+                    :name => name,
+                    :suffix => ", #{country}"})
     end
 
     return { :source => "GeoNames", :url => "http://www.geonames.org/", :results => results }
@@ -124,6 +169,52 @@ private
     return { :source => "GeoNames", :url => "http://www.geonames.org/", :error => "Error contacting ws.geonames.org: #{ex.to_s}" }
   end
 
+  def description_osm_namefinder(types, lat, lon, max)
+    results = Array.new
+
+    # ask OSM namefinder
+    response = fetch_xml("http://www.frankieandshadow.com/osm/search.xml?find=#{types}+near+#{lat},#{lon}&max=#{max}")
+
+    # parse the response
+    response.elements.each("searchresults/named") do |named|
+      lat = named.attributes["lat"].to_s
+      lon = named.attributes["lon"].to_s
+      zoom = named.attributes["zoom"].to_s
+      place = named.elements["place/named"] || named.elements["nearestplaces/named"]
+      type = named.attributes["info"].to_s
+      name = named.attributes["name"].to_s
+      description = named.elements["description"].to_s
+      distance = format_distance(place.attributes["approxdistance"].to_i)
+      direction = format_direction((place.attributes["direction"].to_i - 180) % 360)
+      prefix = "#{distance} #{direction} of #{type} "
+      results.push({:lat => lat, :lon => lon, :zoom => zoom,
+                    :prefix => prefix.capitalize, :name => name,
+                    :description => description})
+    end
+
+    return { :type => types.capitalize, :source => "OpenStreetMap Namefinder", :url => "http://www.frankieandshadow.com/osm/", :results => results }
+  rescue Exception => ex
+    return { :type => types.capitalize, :source => "OpenStreetMap Namefinder", :url => "http://www.frankieandshadow.com/osm/", :error => "Error contacting www.frankieandshadow.com: #{ex.to_s}" }
+  end
+
+  def description_geonames(lat, lon)
+    results = Array.new
+
+    # ask geonames.org
+    response = fetch_xml("http://ws.geonames.org/countrySubdivision?lat=#{lat}&lng=#{lon}")
+
+    # parse the response
+    response.elements.each("geonames/countrySubdivision") do |geoname|
+      name = geoname.get_text("adminName1").to_s
+      country = geoname.get_text("countryName").to_s
+      results.push({:prefix => "#{name}, #{country}"})
+    end
+
+    return { :type => "Location", :source => "GeoNames", :url => "http://www.geonames.org/", :results => results }
+  rescue Exception => ex
+    return { :type => types.capitalize, :source => "OpenStreetMap Namefinder", :url => "http://www.frankieandshadow.com/osm/", :error => "Error contacting www.frankieandshadow.com: #{ex.to_s}" }
+  end
+
   def fetch_text(url)
     return Net::HTTP.get(URI.parse(url))
   end
@@ -147,4 +238,14 @@ private
     return "north-west" if bearing >= 292.5 and bearing < 337.5
     return "west"
   end
+
+  def count_results(results)
+    count = 0
+
+    results.each do |source|
+      count += source[:results].length if source[:results]
+    end
+
+    return count
+  end
 end