Add full app source

Adds the Flutter inventory app source, cleaned up for a shared repo:
generic package name, no hardcoded ERP endpoints (moved to gitignored
local config), no dead auth code, no debug logging of session data.

lib/service/product_image_updater.dart

@@ -0,0 +1,155 @@
+import 'dart:convert';
+import 'dart:io';
+import 'package:dio/dio.dart' as d;
+import 'package:flutter/material.dart';
+import 'package:get_storage/get_storage.dart';
+import 'package:image_picker/image_picker.dart';
+import 'package:get/get.dart';
+import 'package:inventory_app/models/product.dart';
+import 'package:mime/mime.dart';
+
+class ProductImageUpdater {
+  final d.Dio dio = d.Dio();
+  final String baseUrl;
+  final box = GetStorage();
+
+  ProductImageUpdater({required this.baseUrl});
+
+  final ImagePicker _picker = ImagePicker();
+
+  /// Step 1: Pick or take a photo
+  Future<File?> pickPhoto({bool fromCamera = true}) async {
+    final XFile? photo = await _picker.pickImage(
+      source: fromCamera ? ImageSource.camera : ImageSource.gallery,
+    );
+    return photo != null ? File(photo.path) : null;
+  }
+
+  Future<int?> uploadMetaFile(File file) async {
+    final sessionId = box.read('sessionId');
+    if (sessionId == null) {
+      Get.snackbar("Erreur", "Session ID introuvable",backgroundColor: Colors.red);
+      return null;
+    }
+
+    final fileName = file.path.split('/').last;
+    final fileSize = await file.length();
+
+    if (fileSize > 5 * 1024 * 1024) {
+      Get.snackbar("Erreur", "Fichier trop volumineux. Max: 5MB",backgroundColor: Colors.red);
+      return null;
+    }
+
+    final mimeType = lookupMimeType(file.path) ?? 'application/octet-stream';
+
+    try {
+      final response = await dio.post(
+        '$baseUrl/ws/files/upload',
+        data: file.openRead(), // ✅ Send binary stream
+        options: d.Options(
+          headers: {
+            'Cookie': 'JSESSIONID=$sessionId',
+            'Content-Type': 'application/octet-stream',
+            'X-File-Name': fileName,
+            'X-File-Size': fileSize.toString(),
+            'X-File-Type': mimeType,
+            'X-File-Offset': '0',
+          },
+          responseType: d.ResponseType.json,
+        ),
+      );
+
+      print('📦 StatusCode: ${response.statusCode}');
+      print('📦 Response: ${response.data}');
+
+      if (response.statusCode == 200 && response != null) {
+        final int id = response.data['id'];
+        print('✅ File uploaded, MetaFile ID: $id');
+        return id;
+      } else {
+        print('❌ Upload failed: ${response.data}');
+      }
+    } on d.DioException catch (e) {
+      print('❌ DioException: ${e.message}');
+      if (e.response != null) {
+        print('📄 Response data: ${e.response?.data}');
+      }
+    } catch (e) {
+      print('❌ Unexpected error: $e');
+    }
+
+    return null;
+  }
+
+  /// Step 3: Update the product with the image ID
+  Future<bool> updateProductImage({
+    required Product product,
+    required int imageId,
+  }) async {
+    final sessionId = box.read('sessionId');
+    if (sessionId == null) {
+      Get.snackbar("Erreur", "Session ID introuvable",backgroundColor: Colors.red);
+      return false;
+    }
+
+    final payload = {
+      "data": {
+        "id": product.id,
+        "version": product.version,
+        "picture": {"id": imageId},
+      },
+    };
+
+    print('✅  payload $payload');
+
+    try {
+      final response = await dio.post(
+        '$baseUrl/ws/rest/com.axelor.apps.base.db.Product/${product.id}',
+        data: jsonEncode(payload),
+        options: d.Options(
+          headers: {
+            'Cookie': 'JSESSIONID=$sessionId',
+            'Content-Type': 'application/json',
+          },
+        ),
+      );
+
+      if (response.statusCode == 200 && response.data['status'] == 0) {
+        print('✅ Product image updated');
+        return true;
+      } else {
+        print('❌ Update failed: ${response.data}');
+      }
+    } catch (e) {
+      print('❌ d.Dio error: $e');
+    }
+    return false;
+  }
+
+  /// Step 4: Combine all actions in one flow
+  Future<void> updateProductPictureFlow(
+    BuildContext context,
+    Product product,
+  ) async {
+    File? file = await pickPhoto();
+    if (file == null) {
+      Get.snackbar("Annulé", "Aucune image sélectionnée",backgroundColor: Colors.red);
+      return;
+    }
+
+    final imageId = await uploadMetaFile(file);
+    print('✅ imageId  $imageId');
+    if (imageId == null) {
+      Get.snackbar("Erreur", "Upload échoué",backgroundColor: Colors.red);
+      return;
+    }
+
+    final success = await updateProductImage(
+      product: product,
+      imageId: imageId,
+    );
+    if (success) {
+      Get.snackbar("Succès", "Image du produit mise à jour",backgroundColor: Colors.green);
+    }
+  }
+}