Swap recipe dictionary to use duplicate entries method

src/recipe_dictionary.cpp

@@ -441,30 +441,9 @@ recipe &recipe_dictionary::load( const JsonObject &jo, const std::string &src,
     r.was_loaded = true;
 
     // Check for duplicate recipe_ids before assigning it to the map
-    if( out.find( r.ident() ) != out.end() ) {
-        const std::string new_mod_src = enumerate_as_string( r.src, [](
-        const std::pair<recipe_id, mod_id> &source ) {
-            return string_format( "'%s'", source.second->name() );
-        }, enumeration_conjunction::arrow );
-        const std::string old_mod_src = enumerate_as_string( out[ r.ident() ].src, [](
-        const std::pair<recipe_id, mod_id> &source ) {
-            return string_format( "'%s'", source.second->name() );
-        }, enumeration_conjunction::arrow );
-
-        const std::string base_json = string_format( "'%s'", _( "Dark Days Ahead" ) );
-        if( old_mod_src == base_json && new_mod_src != base_json ) {
-            // Assume the mod developer knows what they're doing
-        } else if( old_mod_src == new_mod_src ) {
-            // Conflict within a single source. Throw an error:
-            debugmsg( "Unable to load recipe_id %1$s. A recipe with that id already exists.\nExisting recipe source: %2$s\nNew recipe source: %3$s",
-                      r.ident().str(), old_mod_src, new_mod_src );
-        } else {
-            // Conflict between mods, leave a warning for debugging
-            DebugLog( DebugLevel::D_WARNING,
-                      DC_ALL ) <<
-                               string_format( "Recipe_id conflict: %1$s is included in both %2$s and %3$s.  Only the latter recipe will be loaded",
-                                              r.ident().str(), old_mod_src, new_mod_src );
-        }
+    auto duplicate = out.find( r.ident() );
+    if( duplicate != out.end() ) {
+        mod_tracker::check_duplicate_entries(r, duplicate->second);
     }
 
     return out[ r.ident() ] = std::move( r );