add singleton

Author: hlemai

Sources/SwiftReverseGeoCode/ReverseGeoCodeService+Singleton.swift

@@ -0,0 +1,22 @@
+
+
+public extension ReverseGeoCodeService {
+    
+    private static var service: ReverseGeoCodeService?
+    private static var databasePath = "../Data/geocitydb.sqlite"
+
+    static func SetDatabase(path:String) {
+        databasePath = path
+    }
+
+    static var main:ReverseGeoCodeService {
+        get {
+            guard let unwrapservice = service else {
+                service = ReverseGeoCodeService(database:databasePath)
+                return service!
+            }
+            return unwrapservice
+        }
+    }
+
+}