documents_service.dart

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import 'package:aidra_drive/core/UI/widgets/delivery_voucher_pdf.dart';
import 'package:flutter/material.dart';
 
import '../common/models/collection_voucher_document_model.dart';
import '../common/models/manifest_document.dart';
import '../ui/widgets/collection_voucher_pdf.dart';
import '../ui/widgets/custom_snackbar.dart';
import '../ui/widgets/manifest_pdf.dart';
import '../ui/theme/color_palette.dart';
import '../ui/widgets/loading.dart';
import '../api/api_endpoints.dart';
import '../api/api_client.dart';
import 'service_locator.dart';
 
class DocumentsService {
  final apiClient = sl<ApiClient>();
 
  DocumentsService._();
 
  static final DocumentsService _instance = DocumentsService._();
  static final instance = _instance;
 
  Future<void> getManifestDocument(String reference, BuildContext context) async {
    final loadingOverlay = _showLoadingOverlay(context);
 
    try {
      final response = await apiClient.get(
        url: ApiEndpoints.getManifestDocument(reference: reference),
      );
      loadingOverlay.remove();
      final manifest = ManifestDocument.fromJson(response);
      await generateManifest(manifest);
    } catch (e) {
      loadingOverlay.remove();
 
      if (context.mounted) {
        CustomSnackBar.display(context, ColorPalette.orange,
            "Unable to retrieve manifest document.");
      }
    }
  }
 
  Future<void> getDeliveryVoucherDocument(
    String reference,
    BuildContext context,
  ) async {
    final loadingOverlay = _showLoadingOverlay(context);
    try {
      final response = await apiClient.get(
        url: ApiEndpoints.getManifestDocument(reference: reference),
      );
      loadingOverlay.remove();
      final manifest = ManifestDocument.fromJson(response);
      await generateDeliveryVoucher(manifest);
    } catch (e) {
      loadingOverlay.remove();
      if (context.mounted) {
        CustomSnackBar.display(
          context,
          ColorPalette.orange,
          "Unable to retrieve manifest document.",
        );
      }
    }
  }
 
  Future<void> getCollectionVoucherDocument(
      String reference, BuildContext context) async {
    final loadingOverlay = _showLoadingOverlay(context);
 
    try {
      final response = await apiClient.get(
        url: ApiEndpoints.getCollectionVoucherDocument(reference: reference),
      );
 
      loadingOverlay.remove();
 
      final voucher = CollectionVoucherDocumentModel.fromJson(response);
      await generateCollectionVoucher(voucher);
    } catch (e) {
      loadingOverlay.remove();
 
      if (context.mounted) {
        CustomSnackBar.display(context, ColorPalette.orange,
            "Unable to retrieve collection voucher document.");
      }
    }
  }
 
  OverlayEntry _showLoadingOverlay(BuildContext context) {
    final overlay = OverlayEntry(
      builder: (context) => Container(
        color: Colors.black.withValues(alpha: 0.5),
        child: Loading(),
      ),
    );
 
    if (context.mounted) {
      Overlay.of(context).insert(overlay);
    }
 
    return overlay;
  }
}