import { Settings, DevSettings } from './settings';
import { IAdapter } from './adapter';
type SuccessFn<T = unknown> = (data: T[]) => void;
type ErrorFn = (error: unknown) => void;
export interface ObservableLike<T = unknown> {
  subscribe(next: SuccessFn<T>, error: ErrorFn, complete: () => void): {
    unsubscribe: () => void;
  };
}
type DSGetCallback<T> = (index: number, count: number, success: SuccessFn<T>, fail?: ErrorFn) => void;
type DSGetObservable<T> = (index: number, count: number) => ObservableLike<T[]>;
type DSGetPromise<T> = (index: number, count: number) => PromiseLike<T[]>;
export type DatasourceGet<T> = DSGetCallback<T> | DSGetObservable<T> | DSGetPromise<T>;
export interface IDatasourceParams<T = unknown> {
  get: DatasourceGet<T>;
  settings?: Settings<T>;
  devSettings?: DevSettings;
}
export interface IDatasourceOptional<T = unknown> extends Omit<IDatasourceParams<T>, 'get'> {
  get?: DatasourceGet<T>;
}
export interface IDatasource<T = unknown> extends IDatasourceParams<T> {
  adapter?: IAdapter<T>;
}
export interface IDatasourceConstructed<T = unknown> extends IDatasource<T> {
  adapter: IAdapter<T>;
}
export {};