import CloneFactoryInterface from './CloneFactoryInterface';

export default class CloneFactory implements CloneFactoryInterface {
  clone(item: any): any {
    if (item === null || item === undefined) {
      return item;
    }
    
    let cloned;
    
    if (typeof item === 'string') {
      cloned = item;
    } else {
      
      cloned = Object.assign(Object.create(Object.getPrototypeOf(item)), item);
      
      Object.keys(item).map(each => {
        let method = each.slice(0, 0) + each.slice(1);
        let value = item[method];
        
        if (Array.isArray(value)) {
          let clone_array = value.map(e => this.clone(e));
          cloned[method] = clone_array;
        } else if (typeof value === 'object') {
          cloned[method] = this.clone(value);
        }
      });
    }
    
    return cloned;
  }
}