import {Component, OnInit} from '@angular/core';
import {OaipmhValidatorService} from "../../../services/oaipmh-validator.service";
import {UntypedFormBuilder, UntypedFormGroup, Validators} from "@angular/forms";
import {Option} from "../../../openaire-library/sharedComponents/input/input.component";
import {StringUtils} from "../../../openaire-library/utils/string-utils.class";
import {JobResult} from "../../entities/JobResult";
import {Router} from "@angular/router";
import {Subscriber} from "rxjs";

@Component({
  selector: 'app-oaipmh-validator',
  templateUrl: './oaipmh-validator.component.html',
  styleUrls: ['./oaipmh-validator.component.less']
})
export class OaipmhValidatorComponent implements OnInit {
  public options: Option[] = [
    {label: 'OpenAIRE Guidelines for Data Archives Profile v2', value: 'OpenAIRE Guidelines for Data Archives Profile v2'},
    {label: 'OpenAIRE Guidelines for Literature Repositories Profile v3', value: 'OpenAIRE Guidelines for Literature Repositories Profile v3'},
    {label: 'OpenAIRE Guidelines for Literature Repositories Profile v4', value: 'OpenAIRE Guidelines for Literature Repositories Profile v4'},
    {label: 'OpenAIRE FAIR Guidelines for Data Repositories Profile', value: 'OpenAIRE FAIR Guidelines for Data Repositories Profile'}
  ];
  public form: UntypedFormGroup;
  public sets: Option[] = [{label: 'All sets', value: 'all'}];
  public recordsNum: number = 10;
  public loadingSets: boolean = false;

  subscriptions = [];

  constructor(private fb: UntypedFormBuilder, private router: Router, private validator: OaipmhValidatorService) {
    this.form = this.fb.group({
      url: this.fb.control("", StringUtils.urlValidator()),//[Validators.required/*, Validators.email*/]),
      guidelines: this.fb.control("", Validators.required),
      recordsNum: this.fb.control(null, Validators.required),
      set: this.fb.control('all', Validators.required)
    });
  }

  ngOnInit() {}

  ngOnDestroy() {
    this.subscriptions.forEach(subscription => {
      if (subscription instanceof Subscriber) {
        subscription.unsubscribe();
      }
    });
  }

  updateRecordsNum(increase: boolean = true) {
    this.recordsNum = this.recordsNum + (increase ? 10 : -10);
    this.form.get('recordsNum').setValue(this.recordsNum);
  }

  getSets() {
    this.loadingSets = true;
    let options: Option[] = [{label: 'All sets', value: 'all'}];
    if(this.form.get('setName')) {
      this.form.get('setName').setValue('all');
    }
    if(this.form.get('url') && this.form.get('url').value && StringUtils.isValidUrl(this.form.get('url').value)) {
      this.subscriptions.push(this.validator.getSets(this.form.get('url').value).subscribe(sets => {
        for(let set of sets) {
          options.push({label: set['setName'], value: set['setSpec']});
        }
        this.sets = options;
        this.loadingSets = false;
      }, error => {
        this.sets = options;
        this.loadingSets = false;
      }));
    } else {
      this.sets = options;
      this.loadingSets = false;
    }
  }

  validate() {
    this.subscriptions.push(this.validator.validate(this.form.get('guidelines').value, this.form.get('url').value, this.form.get('recordsNum').value, this.form.get('set').value).subscribe(
      (result: JobResult) => {
        this.router.navigate(['/oaipmh-history'], {
          queryParams: { 'jobId': result.id }
        });
      }
    ));
  }
}