openaire-library/utils/pipes/contentProvidersDatatable.pipe.ts

import { Pipe, PipeTransform} from '@angular/core';
import { Filter, Value} from '../../searchPages/searchUtils/searchHelperClasses.class';
import { SearchUtilsClass } from '../../searchPages/searchUtils/searchUtils.class';
import { ErrorCodes} from '../properties/openaireProperties';

@Pipe({
  name: 'contentProvidersDatatable'
})
export class ContentProvidersDatatablePipe implements PipeTransform  {

  transform(array: any[], args: any[]): any {
    if(array.length > 0) {
      let searchUtils: SearchUtilsClass = args[0];
      let filters:Filter[] = args[1];


      var errorCodes:ErrorCodes = new ErrorCodes();
      searchUtils.status = errorCodes.LOADING;

      var result = array.filter(row=>this.filterAll(row, searchUtils.keyword.toLowerCase(), filters));

      let oldTotal = searchUtils.totalResults;

      searchUtils.totalResults = result.length;

      var errorCodes:ErrorCodes = new ErrorCodes();
      searchUtils.status = errorCodes.DONE;
      if(searchUtils.totalResults == 0 ){
        searchUtils.status = errorCodes.NONE;
      }

      if(oldTotal != searchUtils.totalResults) {
        args[3].detectChanges();
      }
      return result;
    }
    return [];
  }

  filterAll(row: any, query: string, filters:Filter[]) {
    let returnValue: boolean = false;

    if(query) {
      if(row.title.name.toLowerCase().indexOf(query) > -1) {
        returnValue = true;
      }

      if(row.type.toLowerCase().indexOf(query) > -1) {
        returnValue = true;
      }

      if(row.countries && row.countries.length > 0) {
        for(let country of row.countries) {
          if(country.toLowerCase().indexOf(query) > -1) {
            returnValue = true;
            break;
          }
        }
      }

      if(row.compatibility && row.compatibility.toLowerCase().indexOf(query) > -1) {
        returnValue = true;
      }

      if(row.organizations && row.organizations.length > 0) {
        for(let organization of row.organizations) {
          if(organization.name.toLowerCase().indexOf(query) > -1) {
            returnValue = true;
            break;
          }
        }
      }

      if(!returnValue) {
        return false;
      }
    }

    for (let filter of filters){
      if(filter.countSelectedValues > 0){
        for (let value of filter.values){
          if(value.selected == true){

            // make it generic in future commit
            let field:string = "";
            if(filter.title == "Type") {
              field = "type";
            } else if(filter.title == "Compatibility Level") {
              field = "compatibility";
            }

            if(row[field] == value.name) {
              returnValue = true;
              if(filter.filterOperator == "or") {
                break;
              }
            } else {
                if(filter.filterOperator == "and") {
                  return false;
                }
                returnValue = false;
            }
          }
        }
        if(!returnValue) {
          return false;
        }
      }
    }

    return true;
  }
}