Partially Revert "Remove unnecessary code and modify tests"

This reverts commit ba93db04a61cd779d3e8ad2706637a560c273173.

Signed-off-by: Taylor Smock <taylor.smock@kaart.com>

src/main/java/org/openstreetmap/josm/plugins/mapwithai/backend/MapWithAIPreferenceHelper.java

@@ -78,6 +78,27 @@ public final class MapWithAIPreferenceHelper {
                 returnMap.add(layerMap);
             }
         }
+        if (returnMap.isEmpty()) {
+            final List<String> defaultAPIs = Collections.singletonList(DEFAULT_MAPWITHAI_API);
+            final List<String> defaultList = Config.getPref().getList(API_CONFIG).isEmpty() ? defaultAPIs
+                    : Config.getPref().getList(API_CONFIG);
+            returnMap.addAll(defaultList.stream().map(string -> {
+                final TreeMap<String, String> map = new TreeMap<>();
+                map.put(URL_STRING, string);
+                return map;
+            }).collect(Collectors.toList()));
+        }
+        returnMap.parallelStream().forEach(map -> {
+            final String url = map.get(URL_STRING);
+            if (DEFAULT_MAPWITHAI_API.equals(url)) {
+                map.putIfAbsent(SOURCE_STRING, MapWithAIPlugin.NAME);
+                map.putIfAbsent(ENABLED_STRING, "true");
+                map.putIfAbsent(PARAMETERS_STRING, DEFAULT_MAPWITHAI_API_PARAMETERS);
+            } else {
+                map.putIfAbsent(SOURCE_STRING, url);
+                map.putIfAbsent(ENABLED_STRING, Boolean.FALSE.toString());
+            }
+        });
         return returnMap;
     }