Dart-SRP

srp.dart

# Dart-SRP

void main() {
  ApiController apiRedisService = ApiController(cacheService: RedisService());
  ApiController apiNodeCacheService = ApiController(cacheService: NodeCacheService());

  apiRedisService.saveToCache('Hello');
  apiNodeCacheService.saveToCache('Main');
}

class ApiController {
  final CacheService cacheService;

  ApiController({required this.cacheService});

  void saveToCache(dynamic data) {
    cacheService.saveToCache(data);
  }

  void readFromCache(String key) {
    cacheService.readFromCache(key);
  }
}

abstract class CacheService {
  void saveToCache(dynamic data);

  dynamic readFromCache(String key);

  bool updateCache(String key, dynamic value);

  bool deleteCache(String key);
}

class RedisService extends CacheService {
  @override
  void saveToCache(dynamic data) {
    print('RedisService: saveToCache');
  }

  @override
  dynamic readFromCache(String key) {
    print('RedisService: readFromCache');
    return {'key': 'hello'};
  }

  @override
  bool updateCache(String key, dynamic value) {
    print('RedisService: updateCache');
    return true;
  }

  @override
  bool deleteCache(String key) {
    print('RedisService: deleteCache');
    return false;
  }
}

class NodeCacheService extends CacheService {
  @override
  void saveToCache(dynamic data) {
    print('NodeCacheService: saveToCache');
  }

  @override
  dynamic readFromCache(String key) {
    print('NodeCacheService: readFromCache');
    return {'key': 'hello'};
  }

  @override
  bool updateCache(String key, dynamic value) {
    print('NodeCacheService: updateCache');
    return true;
  }

  @override
  bool deleteCache(String key) {
    print('NodeCacheService: deleteCache');
    return false;
  }
}