start work on gps macro

lib/additionals/wiki_macros/gmap_macro.rb

@@ -5,7 +5,7 @@ module WikiMacros
     module GmapMacro
       Redmine::WikiFormatting::Macros.register do
         desc <<-DESCRIPTION
-    Display a google map.  Examples:
+    Display a google map.
 
     Syntax:
 

lib/additionals/wiki_macros/gps_macro.rb

@@ -0,0 +1,66 @@
+# frozen_string_literal: true
+
+module Additionals
+  module WikiMacros
+    module GpsMacro
+      Redmine::WikiFormatting::Macros.register do
+        desc <<-DESCRIPTION
+    Display a GPS coordinates and link it to Google or Openstreetmap.
+
+    Syntax:
+
+    {{gps([q=QUERY, mode=MODE, width=216, height=368])}}
+
+    Parameters:
+
+      :param string lat: latitude of location
+      :param string log: longitude of location
+      :param string service: google (default) or osm
+      :param int zoom: zoom level (only use for osm)
+      :param string name: if specified, name is used as link name
+
+    Examples:
+
+      {{gps(49.56083,11.56018)}}
+      {{gps(lat=49.56083,lon=11.56018)}}
+        DESCRIPTION
+
+        macro :gps do |_obj, args|
+          args, options = extract_macro_options(args,
+                                                :lat,
+                                                :lon,
+                                                :service,
+                                                :name,
+                                                :zoom)
+
+          lat = options[:lat].presence || args&.first
+          lon = options[:lon].presence || args&.second
+          service = options[:service].presence || 'both'
+          zoom = options[:zoom].presence || 17
+
+          raise 'The correct usage is {{gmap([q=QUERY, mode=MODE, widths=x, height=y])}}' if lat.empty? || lon.empty?
+
+          google_link = "https://www.google.com/maps/dir/?api=1&destination=#{lat},#{lon}"
+          osm_link = "https://www.openstreetmap.org/?mlat=#{lat}&mlon=#{lon}#map=#{zoom}/#{lat}/#{lon}"
+
+          case service
+          when 'google'
+            return link_to_external options[:name], src if options[:name].present?
+
+            return tag.span safe_join(['GPS:', link_to_external("#{lat},#{lon}", google_link)], ' '), class: 'gps'
+          when 'osm'
+            return link_to_external options[:name], src if options[:name].present?
+
+            return tag.span safe_join(['GPS:', link_to_external("#{lat},#{lon}", osm_link)], ' '), class: 'gps'
+          else
+            prefix = options[:name].presence || 'GPS'
+
+            return tag.span safe_join(["#{prefix}:",
+                                       link_to_external('OSM', osm_link),
+                                       link_to_external('Gmap', google_link)], ' '), class: 'gps'
+          end
+        end
+      end
+    end
+  end
+end