import {Geometry} from 'ol/geom';
import {Injectable} from '@angular/core';
import {Vector as VectorSource} from 'ol/source';

@Injectable({providedIn: 'root'})
export class AttractivenessIndexService {
  constructor() {}

  processIndex(
    indexSource: VectorSource<Geometry>,
    codeRecordRelations: Record<string, unknown>
  ): void {
    /*if (obce.getFeatures()?.length < 1) {
      obce.once('changefeature', () => this.processIndex(codeRecordRelations));
      return;
    }*/
    let errs = 0;
    //let logs = 0;
    indexSource.forEachFeature((feature) => {
      // Pair each feature with its attractivity data
      const featureData =
        codeRecordRelations[feature.get('NUTS_ID').toUpperCase()];
      if (!featureData) {
        if (errs < 20) {
          errs++;
          console.warn(
            `No data for feature ${feature.get('NUTS_ID').toUpperCase()}`
          );
          console.log(feature);
        }
        return;
      }
      /*logs++;
      if (logs % 100 == 0) {
        console.log(`processed ${logs} items`);
      }*/
      Object.keys(featureData).forEach((key, index) => {
        if (key !== 'nuts_id') {
          feature.set(key, featureData[key], true); //true stands for "silent" - important for performance!
        }
      });
    });
    // Since we are updating the features silently, we now have to refresh manually
    indexSource.getFeatures()[0].dispatchEvent('change');
  }
}