import {CommonModule, Location} from '@angular/common';
import {Component, effect, inject, Signal, signal} from '@angular/core';
import {ReactiveFormsModule} from '@angular/forms';
import {MatDialogModule} from '@angular/material/dialog';
import {MatIconModule} from '@angular/material/icon';
import {MatInputModule} from '@angular/material/input';
import {MatProgressSpinnerModule} from '@angular/material/progress-spinner';
import {MatSnackBar} from '@angular/material/snack-bar';
import {MatTabsModule} from '@angular/material/tabs';
import {MatTooltipModule} from '@angular/material/tooltip';
import {ActivatedRoute, Router} from '@angular/router';
import {PublicationEditionComponent} from '../../components/publication-edition/publication-edition.component';
import {Publication} from '../../core/rest-services/publications/model/publication';
import {PublicationRestService} from '../../core/rest-services/publications/publication.rest-service';
import {toSignal} from "@angular/core/rxjs-interop";
import {map} from "rxjs";

@Component({
  selector: 'app-publication-update',
  imports: [
    CommonModule,
    MatDialogModule,
    MatIconModule,
    MatInputModule,
    MatProgressSpinnerModule,
    MatTabsModule,
    MatTooltipModule,
    ReactiveFormsModule,
    PublicationEditionComponent
  ],
  templateUrl: './publication-update.component.html',
  styleUrl: './publication-update.component.scss'
})
export class PublicationUpdateComponent {
  readonly #activatedRoute = inject(ActivatedRoute);
  readonly #location = inject(Location);
  readonly #publicationRestService = inject(PublicationRestService);
  readonly #router = inject(Router);
  readonly #snackBar = inject(MatSnackBar);
  #isLoading = signal(false);
  #isSavingSubject = signal(false);
  publication = signal<Publication | undefined>(undefined);

  #publicationId$ = this.#activatedRoute.params
    .pipe(map(queryParams => queryParams['publicationId']));
  #publicationId = toSignal(this.#publicationId$, {initialValue: undefined});

  get isLoading(): Signal<boolean> {
    return this.#isLoading.asReadonly();
  }

  get isSaving(): Signal<boolean> {
    return this.#isSavingSubject.asReadonly();
  }

  constructor() {
    effect(() => {
      this.#isLoading.set(true);

      const publicationId = this.#publicationId();
      if (publicationId) {
        this.#publicationRestService.getById(publicationId)
          .then(publication => {
            this.publication.set(publication);
          })
          .catch(error => {
            const errorMessage = $localize`A technical error occurred while loading publication data.`;
            this.#snackBar.open(errorMessage, $localize`Close`, {duration: 5000});
            console.error(errorMessage, error)
          })
          .finally(() => this.#isLoading.set(false));
      } else {
        this.#snackBar.open($localize`A technical error occurred while loading publication data.`, $localize`Close`, {duration: 5000});
        this.#location.back();
      }
    });
  }

  onPublicationSave(publication: Publication): void {
    this.#isSavingSubject.set(true);
    this.#publicationRestService.update(publication)
      .then(() => {
        this.#snackBar.open($localize`Publication updated succesfully!`, $localize`Close`, {duration: 5000});
        this.#router.navigate(['/home']);
      })
      .catch(error => {
        const errorMessage = $localize`An error occured while saving publication modifications.`;
        console.error(errorMessage, error);
        this.#snackBar.open(errorMessage, $localize`Close`, {duration: 5000});
      })
      .finally(() => this.#isSavingSubject.set(false));
  }
}