import 'dart:io';
import 'package:get/get.dart';
import 'package:path_provider/path_provider.dart';
import 'package:path/path.dart' as path;
import '../../../core/utils/logger.dart';
import '../../../core/utils/app_snackbar.dart';
import '../../../core/services/image_processing_service.dart';
import '../../../core/services/invoice_upload_service.dart';

class ScannerController extends GetxController {
  var capturedImages = <File>[].obs;
  var isProcessing = false.obs;
  var uploadProgress = 0.0.obs;

  final InvoiceUploadService _uploadService = InvoiceUploadService();

  Future<void> addImage(String imagePath) async {
    isProcessing.value = true;
    try {
      File originalFile = File(imagePath);
      // Process image (compress, grayscale, contrast)
      File? processedFile = await ImageProcessingService.processInvoiceImage(originalFile);
      
      if (processedFile != null) {
        capturedImages.add(processedFile);
        AppLogger.print('Added processed image to batch. Total: ${capturedImages.length}');
      }
    } finally {
      isProcessing.value = false;
    }
  }

  void removeImage(int index) {
    if (index >= 0 && index < capturedImages.length) {
      capturedImages.removeAt(index);
    }
  }

  Future<void> uploadBatch(String companyId) async {
    if (capturedImages.isEmpty) {
      AppSnackbar.showWarning('تنبيه', 'الرجاء تصوير فاتورة واحدة على الأقل');
      return;
    }

    try {
      isProcessing.value = true;
      uploadProgress.value = 0.0;
      AppLogger.print('Uploading batch of ${capturedImages.length} images...');
      
      final batchId = await _uploadService.uploadBatch(
        companyId: companyId,
        images: capturedImages,
        onProgress: (current, total) {
          uploadProgress.value = current / total;
        },
      );
      
      if (batchId != null) {
        AppSnackbar.showSuccess('نجاح', 'تم رفع ${capturedImages.length} فواتير للمعالجة بنجاح');
        capturedImages.clear();
        uploadProgress.value = 0.0;
        Get.back(); // Go back to dashboard or previous screen
      } else {
        AppSnackbar.showError('خطأ', 'فشل رفع الفواتير، يرجى المحاولة لاحقاً');
      }
    } catch (e) {
      AppLogger.error('Failed to upload batch', e);
      AppSnackbar.showError('خطأ', 'حدث خطأ غير متوقع أثناء الرفع');
    } finally {
      isProcessing.value = false;
    }
  }

  Future<String> getSavePath() async {
    final directory = await getTemporaryDirectory();
    final fileName = 'invoice_${DateTime.now().millisecondsSinceEpoch}.jpg';
    return path.join(directory.path, fileName);
  }
}