✨ Enhance file upload validation in add-pin and preview functionality in drag-drop component

src/app/components/add-pin-popup/add-pin-popup.component.html

@@ -136,6 +136,12 @@
               (fileRemoved)="removeFile($event)"
               [errorMessage]="uploadError"
             ></app-drag-drop>
+            <div
+              *ngIf="form.get('files')?.invalid && form.get('files')?.touched"
+              class="mt-1 text-sm text-red-600 dark:text-red-500"
+            >
+              <span>Il est obligatoire d'ajouter au moins une image</span>
+            </div>
           </div>
 
           <div id="add-pin-modal-description" class="mb-4">

src/app/components/add-pin-popup/add-pin-popup.component.ts

@@ -61,7 +61,7 @@ export class AddPinPopupComponent implements OnInit {
       location: new FormControl('', [Validators.required]),
       complete_address: new FormControl('', [Validators.required]),
       coordinates: new FormControl<number[]>([]),
-      files: new FormControl([]),
+      files: new FormControl([], [Validators.required]),
       date: new FormControl(''),
     });
   }
@@ -175,8 +175,8 @@ export class AddPinPopupComponent implements OnInit {
     }
   }
 
-  getFileNames(): string[] {
-    return this.files.map((file) => file.name);
+  getFileNames(): { name: string }[] {
+    return this.files.map((f) => ({ name: f.name }));
   }
 
   ngOnDestroy() {

src/app/components/drag-drop/drag-drop.component.html

@@ -50,12 +50,24 @@
   class="mt-2 text-sm text-gray-500 dark:text-gray-400"
 >
   <ul>
-    <li *ngFor="let fileName of fileNames">
-      {{ fileName }}
+    <li *ngFor="let fileObj of fileNames" class="relative">
+      <span
+        (mouseenter)="onFileNameMouseEnter(fileObj.name)"
+        class="cursor-pointer underline decoration-dotted max-w-[160px] truncate inline-block align-middle z-50"
+        [title]="fileObj.name"
+      >
+        {{
+          fileObj.name.length > 24
+            ? (fileObj.name | slice : 0 : 10) +
+              "..." +
+              (fileObj.name | slice : -10)
+            : fileObj.name
+        }}
+      </span>
       <button
         type="button"
         class="end-2.5 text-gray-400 bg-transparent hover:text-gray-900 rounded-lg text-sm w-6 h-6 ms-auto inline-flex justify-center items-center dark:hover:text-white"
-        (click)="removeFile(fileName, $event)"
+        (click)="removeFile(fileObj.name, $event)"
       >
         <svg
           class="w-2 h-2"
@@ -74,6 +86,22 @@
         </svg>
         <span class="sr-only">Delete</span>
       </button>
+      <div
+        *ngIf="hoveredFileName === fileObj.name && previewUrl"
+        class="absolute top-8 left-20 z-20 border-2 border-gray-300 rounded shadow-lg"
+      >
+        <img
+          [src]="previewUrl"
+          alt="Preview"
+          class="object-cover max-w-full max-h-[120px] rounded"
+          style="
+            min-width: 120px;
+            min-height: 80px;
+            max-width: 200px;
+            max-height: 150px;
+          "
+        />
+      </div>
     </li>
   </ul>
 </div>

src/app/components/drag-drop/drag-drop.component.ts

@@ -2,24 +2,35 @@ import { CommonModule } from '@angular/common';
 import {
   Component,
   EventEmitter,
+  HostListener,
   Input,
   OnChanges,
+  OnDestroy,
   Output,
   SimpleChanges,
 } from '@angular/core';
+import { ImageService } from '../../services/image/image.service';
 
 @Component({
   selector: 'app-drag-drop',
   imports: [CommonModule],
   templateUrl: './drag-drop.component.html',
 })
-export class DragDropComponent implements OnChanges {
-  @Input() initialFiles: string[] = [];
+export class DragDropComponent implements OnChanges, OnDestroy {
+  @Input() initialFiles: { name: string; id?: string }[] = [];
   @Input() errorMessage: string = '';
-  fileNames: string[] = [];
+  fileNames: { name: string; id?: string }[] = [];
   @Output() filesSelected = new EventEmitter<FileList>();
   @Output() fileRemoved = new EventEmitter<string>();
 
+  hoveredFileName: string | null = null;
+  previewUrl: string | null = null;
+  private objectUrl: string | null = null;
+  private imageUrlCache: { [id: string]: string } = {};
+  private lastHoveredId: string | null = null;
+
+  constructor(private imageService: ImageService) {}
+
   ngOnChanges(changes: SimpleChanges) {
     if (changes['initialFiles']) {
       this.fileNames = [...this.initialFiles];
@@ -58,20 +69,67 @@ export class DragDropComponent implements OnChanges {
   }
 
   updateFileNamesFromFileList(files: FileList): void {
-    this.fileNames = Array.from(files).map((file) => file.name);
+    this.fileNames = Array.from(files).map((file) => ({ name: file.name }));
   }
 
   private updateFileNames(files: FileList): void {
-    const newFileNames = Array.from(files).map(file => file.name);
+    const newFileNames = Array.from(files).map((file) => ({ name: file.name }));
     this.fileNames = [...this.fileNames, ...newFileNames];
   }
 
   removeFile(fileName: string, event: Event): void {
     event.stopPropagation(); // Empêcher la propagation du clic
-    const index = this.fileNames.indexOf(fileName);
+    const index = this.fileNames.findIndex((f) => f.name === fileName);
     if (index > -1) {
       this.fileNames.splice(index, 1);
       this.fileRemoved.emit(fileName);
     }
   }
+
+  async onFileNameMouseEnter(fileName: string): Promise<void> {
+    const fileObj = this.getFileByName(fileName);
+    if (!fileObj) {
+      this.hoveredFileName = null;
+      this.previewUrl = null;
+      this.lastHoveredId = null;
+      return;
+    }
+    // Ne rien faire si on survole le même fichier
+    if (fileObj.id && this.lastHoveredId === fileObj.id) {
+      return;
+    }
+    this.hoveredFileName = fileName;
+    this.lastHoveredId = fileObj.id || null;
+    if (fileObj.id) {
+      if (this.imageUrlCache[fileObj.id]) {
+        this.previewUrl = this.imageUrlCache[fileObj.id];
+      } else {
+        this.imageService.getImage(fileObj.id).subscribe((blob) => {
+          const objectUrl = URL.createObjectURL(blob);
+          this.imageUrlCache[fileObj.id!] = objectUrl;
+          this.previewUrl = objectUrl;
+        });
+      }
+    } else {
+      this.previewUrl = null;
+    }
+  }
+
+  @HostListener('mouseleave') onFileNameMouseLeave(): void {
+    this.hoveredFileName = null;
+    this.previewUrl = null;
+    this.lastHoveredId = null;
+  }
+
+  getFileByName(fileName: string): { name: string; id?: string } | undefined {
+    return this.fileNames.find((f) => f.name === fileName);
+  }
+
+  ngOnDestroy(): void {
+    // Révoquer tous les objectURLs du cache
+    Object.values(this.imageUrlCache).forEach((url) =>
+      URL.revokeObjectURL(url)
+    );
+    this.imageUrlCache = {};
+  }
 }

src/app/components/edit-pin-popup/edit-pin-popup.component.ts

@@ -324,7 +324,13 @@ export class EditPinPopupComponent implements OnInit, OnDestroy {
     }
   }
 
-  getFileNames(): string[] {
-    return this.files.map((file) => (file.name ? file.name.split('|')[0] : ''));
+  getFileNames(): { name: string; id?: string }[] {
+    return this.files.map((file) => {
+      if (file.name && file.name.includes('|')) {
+        const [name, id] = file.name.split('|');
+        return { name, id };
+      }
+      return { name: file.name || '' };
+    });
   }
 }