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import { PictureLightboxService } from '../../../../services/pictures/picture-lightbox.service';
import { PictureService } from '../../../../services/pictures/picture.service';
import { ErrorComponent } from '../../../../shared/components/error/error.component';
import { SidebarActionComponent } from '../../../../shared/components/sidebar-action/sidebar-action.component';
import { PictureResolveResult } from '../../resolvers/picture.resolver';
import { isPlatformBrowser } from '@angular/common';
import { ChangeDetectionStrategy, Component, computed, DestroyRef, effect, ElementRef, inject, PLATFORM_ID, signal, viewChild } from '@angular/core';
import { takeUntilDestroyed, toObservable, toSignal } from '@angular/core/rxjs-interop';
import { FormControl, ReactiveFormsModule, Validators } from '@angular/forms';
import { ActivatedRoute, RouterLink } from '@angular/router';
import { LoggerService, NotificationService, WINDOW } from '@drevo-web/core';
import { PictureArticle } from '@drevo-web/shared';
import { FormatDatePipe, SpinnerComponent } from '@drevo-web/ui';
import { of, startWith, switchMap } from 'rxjs';
import { catchError, map } from 'rxjs/operators';
const TITLE_MIN_LENGTH = 5;
const TITLE_MAX_LENGTH = 500;
@Component({
selector: 'app-picture-detail',
imports: [ErrorComponent, ReactiveFormsModule, SidebarActionComponent, FormatDatePipe, RouterLink, SpinnerComponent],
templateUrl: './picture-detail.component.html',
styleUrl: './picture-detail.component.scss',
changeDetection: ChangeDetectionStrategy.OnPush,
})
export class PictureDetailComponent {
private readonly route = inject(ActivatedRoute);
private readonly authService = inject(AuthService);
private readonly lightboxService = inject(PictureLightboxService);
private readonly pictureService = inject(PictureService);
private readonly notificationService = inject(NotificationService);
private readonly logger = inject(LoggerService).withContext('PictureDetail');
private readonly window = inject(WINDOW);
private readonly platformId = inject(PLATFORM_ID);
private readonly destroyRef = inject(DestroyRef);
private readonly titleInputRef = viewChild<ElementRef<HTMLTextAreaElement>>('titleInput');
private readonly resolveResult = toSignal(
this.route.data.pipe(map(data => data['picture'] as PictureResolveResult)),
);
private readonly user = toSignal(this.authService.user$);
readonly picture = computed(() => {
const result = this.resolveResult();
return typeof result === 'object' ? result : undefined;
});
readonly isLoadError = computed(() => this.resolveResult() === 'load-error');
readonly canEdit = computed(() => this.user()?.permissions.canEdit ?? false);
// Title inline editing
readonly titleControl = new FormControl('', {
nonNullable: true,
validators: [Validators.required, Validators.minLength(TITLE_MIN_LENGTH), Validators.maxLength(TITLE_MAX_LENGTH)],
});
private readonly _isEditingTitle = signal(false);
private readonly _isSavingTitle = signal(false);
private readonly _titleOverride = signal<string | undefined>(undefined);
private blurHandledByKeyboard = false;
readonly isEditingTitle = this._isEditingTitle.asReadonly();
readonly isSavingTitle = this._isSavingTitle.asReadonly();
readonly displayTitle = computed(() => this._titleOverride() ?? this.picture()?.title ?? '');
// Articles
private readonly pictureId = computed(() => this.picture()?.id);
private readonly articlesResult = toSignal(
toObservable(this.pictureId).pipe(
switchMap(id =>
id
? this.pictureService.getPictureArticles(id).pipe(
map(articles => ({ articles, loading: false as const })),
startWith({
articles: undefined as readonly PictureArticle[] | undefined,
loading: true as const,
}),
catchError((error: unknown) => {
this.logger.error('Failed to load articles', error);
return of({
articles: undefined as readonly PictureArticle[] | undefined,
loading: false as const,
});
}),
)
: of({ articles: undefined as readonly PictureArticle[] | undefined, loading: false as const }),
),
),
);
readonly articles = computed(() => this.articlesResult()?.articles);
readonly articlesLoading = computed(() => this.articlesResult()?.loading ?? false);
constructor() {
effect(
() => {
this.picture(); // track picture changes
this._titleOverride.set(undefined);
this._isEditingTitle.set(false);
},
{ allowSignalWrites: true },
);
effect(() => {
const el = this.titleInputRef()?.nativeElement;
if (el) {
// Auto-size: shrink to 0, then expand to scrollHeight (min 4 rows via CSS)
el.style.height = '0';
el.style.height = `${el.scrollHeight}px`;
el.focus();
el.select();
}
});
}
startTitleEdit(): void {
if (!this.canEdit() || this._isEditingTitle()) return;
this.blurHandledByKeyboard = false;
this.titleControl.setValue(this.displayTitle());
this.titleControl.markAsPristine();
this._isEditingTitle.set(true);
}
cancelTitleEdit(): void {
Iif (this._isSavingTitle()) return;
this.blurHandledByKeyboard = true;
this._isEditingTitle.set(false);
}
onTitleBlur(): void {
Iif (this.blurHandledByKeyboard) {
this.blurHandledByKeyboard = false;
return;
}
if (this.titleControl.invalid) {
this._isEditingTitle.set(false);
return;
}
this.saveTitleEdit();
}
saveTitleEdit(): void {
if (this.titleControl.invalid || this._isSavingTitle()) return;
const value = this.titleControl.value.trim();
const pic = this.picture();
Iif (!pic) return;
if (value === this.displayTitle()) {
this.cancelTitleEdit();
return;
}
this._isSavingTitle.set(true);
this.pictureService
.updateTitle(pic.id, value)
.pipe(takeUntilDestroyed(this.destroyRef))
.subscribe({
next: result => {
this._isSavingTitle.set(false);
this._isEditingTitle.set(false);
if (result.picture) {
this._titleOverride.set(result.picture.title);
this.notificationService.success('Описание обновлено');
} else Eif (result.pending) {
this.notificationService.info('Изменение отправлено на модерацию');
}
this.logger.info('Title update submitted', { id: pic.id, title: value });
},
error: (err: unknown) => {
this._isSavingTitle.set(false);
this.logger.error('Failed to update title', err);
this.notificationService.error('Не удалось обновить описание');
},
});
}
onTitleEnter(event: Event): void {
event.preventDefault();
this.blurHandledByKeyboard = true;
this.saveTitleEdit();
}
autoResizeTextarea(): void {
const el = this.titleInputRef()?.nativeElement;
if (el) {
el.style.height = '0';
el.style.height = `${el.scrollHeight}px`;
}
}
onImageClick(): void {
const pic = this.picture();
Eif (pic) {
this.logger.info('Opening lightbox from detail', { id: pic.id });
this.lightboxService.open(pic.id);
}
}
editPicture(): void {
this.notificationService.info('Функция еще не реализована');
}
copyInsertCode(): void {
const pic = this.picture();
Iif (!pic || !isPlatformBrowser(this.platformId)) {
return;
}
const code = `@${pic.id}@`;
this.window?.navigator?.clipboard
.writeText(code)
.then(() => {
this.notificationService.success('Код скопирован');
this.logger.info('Insert code copied', { id: pic.id, code });
})
.catch((error: unknown) => {
this.logger.error('Failed to copy insert code', error);
this.notificationService.error(`Не удалось скопировать код ${code}`);
});
}
}
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