feat: implement image carousel in product dialog; enhance image upload handling and preview functionality

client/src/app/components/ps-product-dialog/ps-product-dialog.component.css

@@ -23,14 +23,98 @@
   align-items: center;
 }
 
-.thumbs {
-  display: flex;
+/* ===== Nouveau : carrousel ===== */
+
+.carousel {
+  grid-column: span 12;
+  display: grid;
   gap: 8px;
-  flex-wrap: wrap;
 }
 
-.thumbs img {
+.carousel-main {
+  position: relative;
+  min-height: 220px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: #f5f5f5;
+  border-radius: 8px;
+  overflow: hidden;
+}
+
+.carousel-main img {
+  max-width: 100%;
+  max-height: 280px;
+  object-fit: contain;
+}
+
+.carousel-nav-btn {
+  position: absolute;
+  top: 50%;
+  transform: translateY(-50%);
+}
+
+.carousel-nav-btn.left {
+  left: 4px;
+}
+
+.carousel-nav-btn.right {
+  right: 4px;
+}
+
+.carousel-placeholder {
+  text-align: center;
+  color: #757575;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 8px;
+  cursor: pointer;
+}
+
+.carousel-placeholder mat-icon {
+  font-size: 40px;
+}
+
+/* Bandeau de vignettes */
+
+.carousel-thumbs {
+  display: flex;
+  gap: 8px;
+  overflow-x: auto;
+}
+
+.thumb-item {
+  width: 64px;
   height: 64px;
   border-radius: 4px;
-  box-shadow: 0 1px 4px rgba(0, 0, 0, .2);
+  overflow: hidden;
+  border: 2px solid transparent;
+  flex: 0 0 auto;
+  cursor: pointer;
+}
+
+.thumb-item.active {
+  border-color: #1976d2;
+}
+
+.thumb-img {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+}
+
+.thumb-placeholder {
+  width: 100%;
+  height: 100%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: #eeeeee;
+  color: #575656;
+  border: 1px dashed #bdbdbd;
+}
+
+.thumb-placeholder mat-icon {
+  font-size: 28px;
 }

client/src/app/components/ps-product-dialog/ps-product-dialog.component.html

@@ -2,22 +2,57 @@
 
 <div mat-dialog-content class="grid" [formGroup]="form">
 
-  <!-- Input pour l'upload des images -->
-  <div class="col-12">
-    <label for="fileInput">Images du produit</label>
-    <input type="file" multiple (change)="onFiles($event)">
-  </div>
+  <!-- CARROUSEL IMAGES -->
+  <div class="col-12 carousel">
+    <div class="carousel-main">
 
-  <!-- Affichage des vignettes des images existantes en mode édition -->
-  @if (mode==='edit' && existingImageUrls.length) {
-    <div class="col-12">
-      <div class="thumbs">
-        @for (url of existingImageUrls; track url) {
-          <img [src]="url" alt="Produit">
-        }
-      </div>
+      <!-- Bouton précédent -->
+      <button mat-icon-button
+              class="carousel-nav-btn left"
+              (click)="prev()"
+              [disabled]="carouselItems.length <= 1">
+        <mat-icon>chevron_left</mat-icon>
+      </button>
+
+      <!-- Image principale ou placeholder -->
+      @if (carouselItems.length && !carouselItems[currentIndex].isPlaceholder) {
+        <img [src]="carouselItems[currentIndex].src" alt="Produit">
+      } @else {
+        <div class="carousel-placeholder" (click)="fileInput.click()">
+          <mat-icon>add_photo_alternate</mat-icon>
+          <span>Ajouter des images</span>
+        </div>
+      }
+
+      <!-- Bouton suivant -->
+      <button mat-icon-button
+              class="carousel-nav-btn right"
+              (click)="next()"
+              [disabled]="carouselItems.length <= 1">
+        <mat-icon>chevron_right</mat-icon>
+      </button>
     </div>
-  }
+
+    <!-- Bandeau de vignettes -->
+    <div class="carousel-thumbs">
+      @for (item of carouselItems; let i = $index; track item) {
+        <div class="thumb-item"
+             [class.active]="i === currentIndex"
+             (click)="onThumbClick(i)">
+          @if (!item.isPlaceholder) {
+            <img class="thumb-img" [src]="item.src" alt="Vignette produit">
+          } @else {
+            <div class="thumb-placeholder" (click)="fileInput.click()">
+              <mat-icon>add</mat-icon>
+            </div>
+          }
+        </div>
+      }
+    </div>
+
+    <!-- Input réel, caché -->
+    <input #fileInput type="file" multiple hidden (change)="onFiles($event)">
+  </div>
 
   <!-- Input pour le nom du produit -->
   <mat-form-field class="col-12">
@@ -93,6 +128,7 @@
   </mat-form-field>
 </div>
 
+<!-- Actions -->
 <div mat-dialog-actions>
   <button mat-button (click)="close()">Annuler</button>
   <button mat-raised-button color="primary" (click)="save()" [disabled]="form.invalid">

client/src/app/components/ps-product-dialog/ps-product-dialog.component.ts

@@ -1,11 +1,11 @@
-import { Component, Inject, OnInit, inject } from '@angular/core';
+import {Component, Inject, OnInit, inject, OnDestroy} from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { FormBuilder, ReactiveFormsModule, Validators } from '@angular/forms';
 import { MatFormField, MatLabel } from '@angular/material/form-field';
 import { MatInput } from '@angular/material/input';
 import { MatSelectModule } from '@angular/material/select';
 import { MatCheckbox } from '@angular/material/checkbox';
-import { MatButton } from '@angular/material/button';
+import { MatButton, MatIconButton } from '@angular/material/button';
 import {
   MatDialogRef,
   MAT_DIALOG_DATA,
@@ -13,6 +13,7 @@ import {
   MatDialogContent,
   MatDialogTitle
 } from '@angular/material/dialog';
+import { MatIcon } from '@angular/material/icon';
 
 import { catchError, forkJoin, of, Observable } from 'rxjs';
 
@@ -26,6 +27,8 @@ export type ProductDialogData = {
   productRow?: ProductListItem & { priceHt?: number };
 };
 
+type CarouselItem = { src: string; isPlaceholder: boolean };
+
 @Component({
   selector: 'app-ps-product-dialog',
   standalone: true,
@@ -34,10 +37,11 @@ export type ProductDialogData = {
   imports: [
     CommonModule, ReactiveFormsModule,
     MatFormField, MatLabel, MatInput, MatSelectModule, MatCheckbox,
-    MatButton, MatDialogActions, MatDialogContent, MatDialogTitle
+    MatButton, MatDialogActions, MatDialogContent, MatDialogTitle,
+    MatIcon, MatIconButton
   ]
 })
-export class PsProductDialogComponent implements OnInit {
+export class PsProductDialogComponent implements OnInit, OnDestroy {
   private readonly fb = inject(FormBuilder);
   private readonly ps = inject(PrestashopService);
 
@@ -55,6 +59,13 @@ export class PsProductDialogComponent implements OnInit {
   images: File[] = [];
   existingImageUrls: string[] = [];
 
+  // Previews des fichiers nouvellement sélectionnés
+  previewUrls: string[] = [];
+
+  // items du carrousel (existants + nouveaux + placeholder)
+  carouselItems: CarouselItem[] = [];
+  currentIndex = 0;
+
   // options possibles pour l'état (Neuf, Très bon état, etc.)
   conditionOptions: string[] = [];
 
@@ -178,15 +189,80 @@ export class PsProductDialogComponent implements OnInit {
           });
 
           this.existingImageUrls = imgs;
+          this.buildCarousel();
         });
+    } else {
+      // mode création : uniquement placeholder au début
+      this.buildCarousel();
     }
   }
 
+  // -------- Carrousel / gestion des fichiers --------
+
   onFiles(ev: Event) {
     const fl = (ev.target as HTMLInputElement).files;
-    this.images = fl ? Array.from(fl) : [];
+
+    // Nettoyage des anciens objectURL
+    for(let url of this.previewUrls) {
+      URL.revokeObjectURL(url);
+    }
+    this.previewUrls = [];
+    this.images = [];
+
+    if (fl) {
+      this.images = Array.from(fl);
+      this.previewUrls = this.images.map(f => URL.createObjectURL(f));
+    }
+
+    this.buildCarousel();
+
+    // si on a ajouté des images, se placer sur la première nouvelle
+    if (this.images.length && this.existingImageUrls.length + this.previewUrls.length > 0) {
+      this.currentIndex = this.existingImageUrls.length; // première nouvelle
+    }
   }
 
+  private buildCarousel() {
+    const items: CarouselItem[] = [
+      ...this.existingImageUrls.map(u => ({ src: u, isPlaceholder: false })),
+      ...this.previewUrls.map(u => ({ src: u, isPlaceholder: false }))
+    ];
+
+    // placeholder en dernier
+    items.push({ src: '', isPlaceholder: true });
+
+    this.carouselItems = items;
+    if (!this.carouselItems.length) {
+      this.currentIndex = 0;
+    } else if (this.currentIndex >= this.carouselItems.length) {
+      this.currentIndex = 0;
+    }
+  }
+
+  prev() {
+    if (!this.carouselItems.length) return;
+    this.currentIndex = (this.currentIndex - 1 + this.carouselItems.length) % this.carouselItems.length;
+  }
+
+  next() {
+    if (!this.carouselItems.length) return;
+    this.currentIndex = (this.currentIndex + 1) % this.carouselItems.length;
+  }
+
+  onThumbClick(index: number) {
+    if (index < 0 || index >= this.carouselItems.length) return;
+    this.currentIndex = index;
+  }
+
+  ngOnDestroy() {
+    // Nettoyage des objectURL
+    for (let url of this.previewUrls) {
+      URL.revokeObjectURL(url);
+    }
+  }
+
+  // -------- Save / close inchangés (à part dto.images) --------
+
   save() {
     if (this.form.invalid) return;
 
@@ -199,7 +275,7 @@ export class PsProductDialogComponent implements OnInit {
       categoryId: +v.categoryId!,
       manufacturerId: +v.manufacturerId!,
       supplierId: +v.supplierId!,
-      images: this.images,
+      images: this.images,              // toujours les fichiers sélectionnés
       complete: !!v.complete,
       hasManual: !!v.hasManual,
       conditionLabel: v.conditionLabel || undefined,