SmartImageUploader class in the Dart file provides a method to upload a file to Firebase. It first opens a file picker for the user to select a file. After a file is selected, it extracts the file extension and appends it to the provided path. Then, it uploads the file to Firebase Storage. If the upload is successful, it retrieves and returns th…

smart_image_uploader.dart

import 'dart:io';
import 'dart:typed_data';

import 'package:file_picker/file_picker.dart';

import 'firebase_storage_manager.dart';

class SmartImageUploader {

  static Future<String?> uploadFileToFirebase(String path) async {
    /// Step 1: Open the file picker and get the file
    FilePickerResult? result = await FilePicker.platform.pickFiles();

    if(result != null) {
      PlatformFile platformFile = result.files.first;

      // Extract the file extension
      String? extension = platformFile.extension;

      // Append the extension to the path
      String fullPath = '$path.$extension';

      Uint8List? fileBytes = platformFile.bytes;
      bool uploadResult = false;

      /// Step 2: Upload the file to Firebase Storage
      if (fileBytes != null) {
        // Use the bytes property in a web environment
        uploadResult = await FirebaseStorageManager().uploadFile(fileBytes, fullPath);
      } else if (platformFile.path != null) {
        // Convert the PlatformFile to a File in a non-web environment
        File file = File(platformFile.path!);
        uploadResult = await FirebaseStorageManager().uploadFile(file, fullPath);
      }
      if(uploadResult) {
        /// Step 3: Get the download URL of the uploaded file
        print('File uploaded successfully');
        var downloadUrl = await FirebaseStorageManager().downloadURL(fullPath);
        return downloadUrl;
      } else {
        print('Failed to upload file');
      }
    } else {
      // User canceled the picker
      print('No file selected');
    }
  }
}