collection_voucher_pdf.dart

Go to the documentation of this file.

import 'dart:developer';
import 'dart:io';
import 'dart:convert';
import 'package:flutter/services.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:open_file/open_file.dart';
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart' as pw;
import 'package:path_provider/path_provider.dart';
 
import '../../constants/assets.dart';
import '../../services/user_info_service.dart';
import '../../common/models/collection_voucher_document_model.dart';
 
Future<void> generateCollectionVoucher(CollectionVoucherDocumentModel model) async {
    final pdf = pw.Document();
 
    final font = await rootBundle.load('assets/fonts/cairo_regular_font.ttf');
    final ttf = pw.Font.ttf(font);
 
    final theme = pw.ThemeData.withFont(
      base: ttf,
    );
 
    pw.MemoryImage? signatureImage;
    if (UserInfoService.instance.userInfo?.signature != null) {
      try {
        final signatureBytes = base64Decode(UserInfoService.instance.userInfo!.signature ?? '');
        signatureImage = pw.MemoryImage(signatureBytes);
      } catch (e) {
        log('Error decoding signature: $e');
      }
    }
 
    final qrCode = pw.BarcodeWidget(
      barcode: pw.Barcode.qrCode(),
      data: model.collection.name ?? '',
      width: 50,
      height: 50,
    );
 
    final directorSignature = pw.Column(
      children: [
        pw.Text(
          'Driver / Collector : ${UserInfoService.instance.userInfo?.name ?? '--'}',
          style: pw.TextStyle(fontSize: 10, fontWeight: pw.FontWeight.bold),
        ),
        if (signatureImage != null)
          pw.Container(
            width: 90,
            height: 90,
            child: pw.Center(
              child: pw.Image(
                signatureImage,
                fit: pw.BoxFit.contain,
              ),
            ),
          ),
      ],
    );
    
    final collectorSignature = pw.Column(
      children: [
        pw.Text(
          'Collection Point : ${model.collection.partnerId?.name ?? 'Shah waqar'}',
          style: pw.TextStyle(fontSize: 10, fontWeight: pw.FontWeight.bold),
        ),
        pw.Container(
          width: 90,
          height: 90,
          child: pw.Center(
            child: pw.Image(
              pw.MemoryImage(
                (await rootBundle.load(Assets.directorSign)).buffer.asUint8List(),
              ),
              fit: pw.BoxFit.contain,
            ),
          ),
        ),
      ],
    );
 
    pdf.addPage(
      pw.Page(
        textDirection: pw.TextDirection.ltr,
        theme: theme,
        build: (context) {
          return pw.Column(
            crossAxisAlignment: pw.CrossAxisAlignment.center,
            children: [
              pw.Text(
                'Collection Voucher',
                style: pw.TextStyle(fontSize: 20, fontWeight: pw.FontWeight.bold),
              ),
              pw.SizedBox(height: 8),
              pw.Text(
                'Document Number : ${model.collection.name ?? ''}',
                style: pw.TextStyle(
                  fontSize: 16,
                  fontWeight: pw.FontWeight.normal,
                  color: PdfColor.fromHex('#1402a3'),
                ),
              ),
              pw.SizedBox(height: 25),
              pw.Align(
                alignment: pw.Alignment.centerLeft,
                child: pw.Column(
                  crossAxisAlignment: pw.CrossAxisAlignment.start,
                  
                children: [
                  pw.Text(
                    'Name:',
                    style: pw.TextStyle(fontSize: 15, fontWeight: pw.FontWeight.bold),
                  ),
                  pw.Text(
                    model.collection.partnerId?.name ?? '',
                    style: pw.TextStyle(
                        fontSize: 14, fontWeight: pw.FontWeight.normal),
                  ),
                  pw.SizedBox(height: 8),
                  pw.Text(
                    'Address:',
                    style: pw.TextStyle(fontSize: 15, fontWeight: pw.FontWeight.bold),
                  ),
                  pw.Text(
                    model.collection.partnerId?.street ?? '',
                    textDirection: pw.TextDirection.rtl,
                    style: pw.TextStyle(
                      fontSize: 14, fontWeight: pw.FontWeight.normal,
                    ),
                  ),
                ],
              ),
              ),
              
              pw.SizedBox(height: 30),
              pw.Table(
                border: pw.TableBorder.all(),
                children: [
                  pw.TableRow(
                    children: [
                      pw.Container(
                        padding: const pw.EdgeInsets.all(8),
                        child: pw.Text(
                          'Collection Date',
                          style: pw.TextStyle(fontWeight: pw.FontWeight.bold),
                        ),
                      ),
                      pw.Container(
                        padding: const pw.EdgeInsets.all(8),
                        child: pw.Text(model.collection.confirmationDate?.split('T')[0] ?? '--'),
                      ),
                      pw.Container(
                        padding: const pw.EdgeInsets.all(8),
                        child: pw.Text(
                          'Payment Bill Ref',
                          style: pw.TextStyle(fontWeight: pw.FontWeight.bold),
                        ),
                      ),
                      pw.Container(
                        padding: const pw.EdgeInsets.all(8),
                        child: pw.Text(model.collection.paymentBillRef ?? '--'),
                      ),
                    ],
                  ),
                  pw.TableRow(
                    children: [
                      pw.Container(
                        padding: const pw.EdgeInsets.all(8),
                        child: pw.Text(
                          'Collection Order Ref',
                          style: pw.TextStyle(fontWeight: pw.FontWeight.bold),
                        ),
                      ),
                      pw.Container(
                        padding: const pw.EdgeInsets.all(8),
                        child: pw.Text(model.collection.collectionOrderRef ?? ''),
                      ),
                      pw.Container(
                        padding: const pw.EdgeInsets.all(8),
                        child: pw.Text(
                          'Payment Method',
                          style: pw.TextStyle(fontWeight: pw.FontWeight.bold),
                        ),
                      ),
                      pw.Container(
                        padding: const pw.EdgeInsets.all(8),
                        child: pw.Text('Deferred Payment'),
                      ),
                    ],
                  ),
                  // Removed the last row (Collection Confirmation Ref and Bill Status)
                ],
              ),
              pw.SizedBox(height: 25),
              // ignore: deprecated_member_use
 
              pw.TableHelper.fromTextArray(
                context: context,
                headers: [
                  'Product',
                  'Quantity Received',
                  'Quantity Billed',
                  // Removed 'Unit Price' from headers
                ],
                data: List.generate(1, (index) {
                  return [
                    model.product ?? '--',
                    '${model.quantityReceived ?? ''} Kg',
                    '${model.quantityBilled ?? ''} Kg',
                    // Removed '2.2' (Unit Price) from data
                  ];
                }),
                headerStyle: pw.TextStyle(fontWeight: pw.FontWeight.bold),
                cellAlignment: pw.Alignment.centerLeft,
              ),
 
              // Removed the Payment Amount container
              
              pw.SizedBox(height: 30),
              pw.Row(
                mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
                children: [directorSignature, collectorSignature],
              ),
              pw.SizedBox(height: 30),
              pw.Row(
                children: [
                  pw.Spacer(),
                  pw.Column(
                    children: [
                      pw.Row(
                        mainAxisAlignment: pw.MainAxisAlignment.spaceBetween,
                        children: [
                          qrCode,
                          pw.SizedBox(width: 10),
                        ],
                      ),
                      pw.SizedBox(height: 10.sp),
                      pw.Text(
                        'STRICTLY CONFIDENTIAL',
                        style: pw.TextStyle(
                            fontSize: 8, fontWeight: pw.FontWeight.normal,
                            color: const PdfColor(0.5, 0.5, 0.5),  
                        ),
                      ),
                    ]
                  )
                ],
              ),
            ],
          );
        },
      ),
    );
 
    final output = await getTemporaryDirectory();
    final file = File('${output.path}/collection_voucher_document.pdf');
    await file.writeAsBytes(await pdf.save());
 
    OpenFile.open(file.path);
  }