import 'package:mock/person.dart';
import 'package:mock/business.dart';
import 'package:mock/person_data_access_map.dart';
import 'package:mock/person_data_access_sqlite.dart';

/*
 @startuml
class Business {
- PersonDataAccessMap backend
}
PersonDataAccessMap <-left- Business : uses

class PersonDataAccessMap {
- Map<int, Person> map
 + store(Person p): void
 + retrieve(int id): Person
 + retrieveAll(): List<Person>
}

class PersonDataAccessSqlite implements PersonDataAccessMap {
- Sqlite db
 + store(Person p): void
 + retrieve(int id): Person
 + retrieveAll(): List<Person>
}
@enduml
 */
void main() {
  PersonDataAccessMap backend = PersonDataAccessSqlite("sqlite3.db");
  Business b = Business(backend);

  List<Person> persons = b.getAllPersons();
  int personCount = persons.length;

  print("We know $personCount persons");

  int nextPersonId = ++personCount;
  b.addPerson(Person(nextPersonId, "A New Person"));

  print("Now we know ${b.getAllPersons().length} persons");

  backend.close();
}