feat(modal): add zoomable image viewer

src/app/core/services/modal.service.ts

@@ -2,16 +2,19 @@ import { InjectionToken, Injectable, Type, signal } from '@angular/core';
 import { Observable, Subject, map } from 'rxjs';
 import { ConfirmDeleteModalComponent } from '../../shared/components/confirm-delete-modal/confirm-delete-modal.component';
 import { ConfirmModalComponent } from '../../shared/components/confirm-modal/confirm-modal.component';
+import { ImageModalComponent } from '../../shared/components/image-modal/image-modal.component';
 import { QrModalComponent } from '../../shared/components/qr-modal/qr-modal.component';
 import { SimpleModalComponent } from '../../shared/components/simple-modal/simple-modal.component';
 
 export type ModalSize = 'qr' | 'sm' | 'md' | 'lg' | 'xl' | 'full';
 export type ModalDismissReason = 'backdrop' | 'escape' | 'programmatic' | 'replaced';
+export type ModalPresentation = 'dialog' | 'fullscreen-media';
 
 export interface ModalConfig<TData = unknown> {
   title?: string;
   data?: TData;
   size?: ModalSize;
+  presentation?: ModalPresentation;
   closeOnBackdrop?: boolean;
   closeOnEscape?: boolean;
   showCloseButton?: boolean;
@@ -62,6 +65,25 @@ export interface QrModalConfig extends Omit<ModalConfig<QrModalData>, 'data' | '
   ticket: string;
 }
 
+export interface ImageModalData {
+  src: string;
+  alt: string;
+  initialZoom: number;
+  minZoom: number;
+  maxZoom: number;
+}
+
+export interface ImageModalConfig extends Omit<
+  ModalConfig<ImageModalData>,
+  'data' | 'presentation' | 'size'
+> {
+  src: string;
+  alt: string;
+  initialZoom?: number;
+  minZoom?: number;
+  maxZoom?: number;
+}
+
 export interface ActiveModalState<TResult = unknown, TData = unknown> {
   component: Type<unknown>;
   config: NormalizedModalConfig<TData>;
@@ -195,6 +217,33 @@ export class ModalService {
     });
   }
 
+  openImage(config: ImageModalConfig): Observable<void> {
+    return this.openImageRef(config).afterClosed$.pipe(map(() => undefined));
+  }
+
+  openImageRef(config: ImageModalConfig): ModalRef<void> {
+    const { src, alt, initialZoom = 1, minZoom = 1, maxZoom = 4, ...modalConfig } = config;
+    const normalizedMinZoom = Math.max(0.1, minZoom);
+    const normalizedMaxZoom = Math.max(normalizedMinZoom, maxZoom);
+    const normalizedInitialZoom = Math.min(
+      normalizedMaxZoom,
+      Math.max(normalizedMinZoom, initialZoom),
+    );
+
+    return this.open(ImageModalComponent, {
+      ...modalConfig,
+      size: 'full',
+      presentation: 'fullscreen-media',
+      data: {
+        src,
+        alt,
+        initialZoom: normalizedInitialZoom,
+        minZoom: normalizedMinZoom,
+        maxZoom: normalizedMaxZoom,
+      },
+    });
+  }
+
   private close<TResult>(ref: ModalRef<TResult>, result?: TResult): void {
     if (this.activeModalState()?.ref !== ref) {
       return;