import { HttpClient, HttpParams } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs';
import { map } from 'rxjs/operators';
import { PaperlessDocument } from 'src/app/data/paperless-document';
import { SearchResult } from 'src/app/data/search-result';
import { environment } from 'src/environments/environment';
import { DocumentService } from './document.service';


@Injectable({
  providedIn: 'root'
})
export class SearchService {
  
  constructor(private http: HttpClient, private documentService: DocumentService) { }

  search(query: string, page?: number, more_like?: number): Observable<SearchResult> {
    let httpParams = new HttpParams()
    if (query) {
      httpParams = httpParams.set('query', query)
    }
    if (page) {
      httpParams = httpParams.set('page', page.toString())
    }
    if (more_like) {
      httpParams = httpParams.set('more_like', more_like.toString())
    }
    return this.http.get<SearchResult>(`${environment.apiBaseUrl}search/`, {params: httpParams}).pipe(
      map(result => {
        result.results.forEach(hit => this.documentService.addObservablesToDocument(hit.document))
        return result
      })
    )
  }

  autocomplete(term: string): Observable<string[]> {
    return this.http.get<string[]>(`${environment.apiBaseUrl}search/autocomplete/`, {params: new HttpParams().set('term', term)})
  }
}