import { Component, inject, OnInit } from "@angular/core";
import { PublicationEditionComponent } from "../../components/publication-edition/publication-edition.component";
import { PublicationRestService } from "../../core/rest-services/publications/publication.rest-service";
import { ActivatedRoute, Router } from "@angular/router";
import { MatSnackBar } from "@angular/material/snack-bar";
import { BehaviorSubject, Observable, Subscription } from "rxjs";
import { Publication } from "../../core/rest-services/publications/model/publication";
import { AuthenticationService } from "../../core/service/authentication.service";
import { Author } from "../../core/rest-services/publications/model/author";


@Component({
    selector: 'app-publication-creation',
    templateUrl: './publication-creation.component.html',
    styleUrl: './publication-creation.component.scss',
    imports: [
    PublicationEditionComponent
]
})
export class PublicationCreationComponent implements OnInit {
    private readonly authenticationService = inject(AuthenticationService);
    private readonly publicationRestService = inject(PublicationRestService);
    private readonly router = inject(Router);
    private readonly snackBar = inject(MatSnackBar);
    private isSavingSubject = new BehaviorSubject<boolean>(false);
    private subscriptions: Subscription[] = [];
    publication!: Publication;

    get isSaving$(): Observable<boolean> {
        return this.isSavingSubject.asObservable();
    }

    ngOnInit(): void {
        const authenticatedUser = this.authenticationService.getAuthenticatedUser();
        if (authenticatedUser) {
            const author: Author = {
                id: authenticatedUser.id,
                name: authenticatedUser.pseudo,
                image: authenticatedUser.photoId ?? ''
            };
            this.publication = {
                id: '',
                key: '',
                title: '',
                text: '',
                parsedText: '',
                description: '',
                creationDate: new Date(),
                illustrationId: '',
                categoryId: '',
                author
            };
        }
    }

    ngOnDestroy(): void {
        this.subscriptions.forEach(subscription => subscription?.unsubscribe());
    }

    onPublicationSave(publication: Publication): void {
        this.isSavingSubject.next(true);
        this.publicationRestService.create(publication)
            .then(() => {
                this.snackBar.open($localize`Publication created succesfully!`, $localize`Close`, { duration: 5000 });
                this.router.navigate(['/my-publications']);
            })
            .catch(error => {
                const errorMessage = $localize`An error occured while saving new publication.`;
                console.error(errorMessage, error);
                this.snackBar.open(errorMessage, $localize`Close`, { duration: 5000 });
            })
            .finally(() => this.isSavingSubject.next(false));
    }
}