import { FilterFunction, DocumentFilters } from '../interfaces';
import * as numberFilters from '../filters/number-filters';
import * as operationFilters from '../filters/operation-filters';
import * as defaultFilters from '../filters/default-filters';
import * as arrayFilters from '../filters/array-filters';
import * as dateFilters from '../filters/date-filters';
import { Parser } from '../interfaces/parser';

export class FiltersBuilder {
  constructor(
    private readonly parser: Parser,
    private filters: DocumentFilters = {},
  ) {}

  addFilter(name: string, filter: FilterFunction): FiltersBuilder {
    this.filters[name] = filter;

    return this;
  }

  applyFilters(): Parser {
    Object.assign(this.parser.filters, this.filters);

    return this.parser;
  }

  reset(): void {
    for (const key in this.filters) {
      if (Object.prototype.hasOwnProperty.call(this.filters, key)) {
        delete this.parser.filters[key];
      }
    }

    this.filters = {};
  }

  static default(parser: Parser): FiltersBuilder {
    const filters: DocumentFilters = {
      ...arrayFilters,
      ...dateFilters,
      ...defaultFilters,
      ...numberFilters,
      ...operationFilters,
    };

    return new FiltersBuilder(parser, filters);
  }
}