print_invoice.dart

import 'dart:convert';

import 'package:alsafi_app/helpers/renderer.dart';

class PrintProvider {
  List<int> rightAlign = [27, 97, 2];
  List<int> leftAlign = [27, 97, 0];
  List<int> centerAlign = [27, 97, 1];
  List<int> title = [29, 33, 33];
  List<int> heading = [29, 33, 16];
  List<int> normalText = [29, 33, 0];
  List<int> enableUnderline = [27, 45, 2];
  List<int> disableUnderline = [27, 45, 0];
  List<int> stars = [];
  var lineBreak = 10;
  var bluetoothPrinter;

  List<int> tableRow(List<int> column1, List<int> column2, List<int> column3,
      column4, column1Weight, column2Weight, column3Weight, column4Weight) {
    List<int> singleLine = [];


    if (column1Weight > 0) {
      column1 = List<int>.from(column1);
      while (column1.length < column1Weight) {
        column1.add(32);
      }
      singleLine = singleLine..addAll(column1);
    }

    singleLine.addAll(leftAlign);

    if (column2Weight > 0) {
      column2 = List<int>.from(column2);
      while (column2.length < column2Weight) {
        column2.add(32);
      }
      singleLine = singleLine..addAll(column2);
    }

    if (column3Weight > 0) {
      column3 = List<int>.from(column3);
      while (column3.length < column3Weight) {
        column3.add(32);
      }
      singleLine = singleLine..addAll(column3);
    }

    if (column4Weight > 0) {
      column4 = List<int>.from(column4);
      while (column4.length < column4Weight) {
        column4.add(32);
      }
      singleLine = singleLine..addAll(column4);
    }

    singleLine.addAll(rightAlign);

    return singleLine;
  }

  List<int> printInvoice(dynamic invoice) {
    List<int> titleText =
        printableThermal(invoice['returning'] ? "فاتورة مرجع" : "فاتورة مبيعات");
    List<int> headingText =
        printableThermalEnglish("No. " + (invoice['invoiceNumber'] == null ? invoice['orderNumber'] : invoice['invoiceNumber']));

    List<int> printData = [27, 84, 2, 27, 83, 27, 77, 49, 27, 97, 2, 29, 33, 16];

    List<int> text = printableThermal("الاسمع الالمع");
    List<int> line = [];

    /*line.addAll([27, 36, 0, 1]);
    line.addAll(text);*/
    line.addAll([27, 36, 0, 0]);
    line.addAll(text);
    line.add(this.lineBreak);

    text = printableThermal("الاحمد english الأسعد 123 الجميل");
    line.addAll(text);
    line.add(this.lineBreak);

    /*line = this.centerAlign..addAll(line);
    line = this.title..addAll(line);

    line = line..addAll(titleText);
    line.add(this.lineBreak);*/

    printData = printData..addAll(line);

    /*line = [];
    List<int> tempCenterAlign = this.centerAlign;
    line = this.centerAlign..addAll(line);
    this.centerAlign = tempCenterAlign;

    line = this.heading..addAll(line);

    line = line..addAll(headingText);
    line.add(this.lineBreak);

    printData = printData..addAll(line);

    String numberToUse = invoice['invoiceNumber'] == null ? invoice['orderNumber'] : invoice['invoiceNumber'];

    List<int> barcodeCommand = [29, 107, 73, numberToUse.length];

    for (var j = 0; j < numberToUse.length; j++) {
      barcodeCommand.add(numberToUse[j].codeUnitAt(0));
    }*/

    //printData = printData..addAll([29, 104, 32]);
    //printData = printData..addAll(barcodeCommand);

    //printData = printData..addAll(this.normalText);

    //printData = printData..addAll(this.stars);

    //printData = printData..addAll(this.rightAlign);
    
    /*printData = printData..addAll([27, 36, 50, 50]);

    line = this.tableRow(printableThermal("السيد"),
        printableThermal(invoice['client']['title']), [], [], 18, 24, 0, 0);
    line.add(this.lineBreak);

    printData = printData..addAll(line);

    line = this.tableRow(
        printableThermal("رقم الحساب"),
        printableThermal('****'),
        [],
        [],
        18,
        24,
        0,
        0);
    line.add(this.lineBreak);

    printData = printData..addAll(line);

    line = this.tableRow(
        printableThermal("العنوان"),
        printableThermal(
            invoice['client']['location'] == null ? "-" : invoice['client']['location']),
        [],
        [],
        18,
        24,
        0,
        0);
    line.add(this.lineBreak);

    printData = printData..addAll(line);

    line = this.tableRow(printableThermal("الجوال"),
        printableThermal("${invoice['client']['mobileNo']}"), [], [], 18, 24, 0, 0);
    line.add(this.lineBreak);

    printData = printData..addAll(line);

    line = this.tableRow(
        printableThermal("التاريخ والوقت"),
        printableThermal(invoice ['createdDate']),
        [],
        [],
        18,
        24,
        0,
        0);
    line.add(this.lineBreak);
    line.add(this.lineBreak);

    printData = printData..addAll(line);

    line = this.tableRow(printableThermal("**********************"), printableThermal("*****"),
        printableThermal("*******"), printableThermal("*******"), 23, 5, 7, 7);
    line.add(this.lineBreak);
    printData = printData..addAll(line);

    printData = printData..addAll(this.enableUnderline);

    line = this.tableRow(printableThermal("صنف"), printableThermal("كم"),
        printableThermal("سعر"), printableThermal("مبلغ"), 23, 5, 7, 7);
    line.add(this.lineBreak);
    printData = printData..addAll(line);

    printData = printData..addAll(this.disableUnderline);

    double allAmounts = 0;
    double allPrice = 0;

    for (var i = 0; i < invoice['items'].length; i++) {
      if (i + 1 >= invoice['items'].length) {
        printData = printData..addAll(this.enableUnderline);
      }

      dynamic item = invoice['items'][i];

      double quantity = item['quantity'];
      double price = item['unitPrice'];

      allAmounts += item['quantity'];
      allPrice += price * quantity;

      line = this.tableRow(
        printableThermal(item['item'] + '/' + item['unit']),
        printableThermal(item['quantity'].toStringAsFixed(1)),
        printableThermal(item['unitPrice'].toStringAsFixed(1)),
        printableThermal((price * quantity).toStringAsFixed(1)),
        50,
        5,
        5,
        5,
      );
      line.add(this.lineBreak);
      printData = printData..addAll(line);
    }

    line = this.tableRow(
        printableThermal("الإجمالي"),
        printableThermal(allAmounts.toStringAsFixed(1)),
        [],
        printableThermal(allPrice.toStringAsFixed(1)),
        23,
        5,
        7,
        7);
    line.add(this.lineBreak);

    printData = printData..addAll(line);

    if (invoice['discountAmount'] != null && invoice['discountAmount'] != 0) {
      line = this.tableRow(
          printableThermal("خصم مسموح"),
          [],
          [],
          printableThermal(invoice['discountAmount'].toStringAsFixed(1)),
          23,
          5,
          7,
          7);
      line.add(this.lineBreak);

      printData = printData..addAll(line);
    }

    if (invoice['totalPaidAmount'] != null && invoice['totalPaidAmount'] != 0) {
      line = this.tableRow(
          printableThermal(invoice['returning'] ? "صرف" : "نقدا"),
          [],
          [],
          printableThermal(invoice['totalPaidAmount'].toStringAsFixed(1)),
          23,
          5,
          7,
          7);
      line.add(this.lineBreak);

      printData = printData..addAll(line);
    }

    if (invoice['returning']) {
      if (invoice['remainingAmount'] > 0) {
        line = this.tableRow(
            printableThermal("مرجع نقدا"),
            [],
            [],
            printableThermal(invoice['remainingAmount'].toStringAsFixed(1)),
            23,
            5,
            7,
            7);
        line.add(this.lineBreak);
        printData = printData..addAll(line);
      }
    } else {
      if (invoice.totalPrice - invoice.totalPaidAmount > 0) {
        line = this.tableRow(
            printableThermal("على الحساب"),
            [],
            [],
            printableThermal((invoice.totalPrice -
                    invoice.totalPaidAmount -
                    (invoice.discountAmount != null
                        ? invoice.discountAmount
                        : 0))
                .toStringAsFixed(1)),
            23,
            5,
            7,
            7);
        line.add(this.lineBreak);
        printData = printData..addAll(line);
      }
    }

    printData = printData..addAll(this.disableUnderline);

    line = [];

    line.add(this.lineBreak);
    line.add(this.lineBreak);
    printData = printData..addAll(line);

    line = this
        .tableRow([], [], printableThermal("توقيع الزبون"), [], 15, 15, 12, 0);

    line.add(this.lineBreak);
    line.add(this.lineBreak);

    printData = printData..addAll(line);

    line = this
        .tableRow([], [], printableThermal("____________"), [], 15, 15, 12, 0);

    line.add(this.lineBreak);
    line.add(this.lineBreak);

    printData = printData..addAll(line);

    line = [];

    line.add(this.lineBreak);
    line.add(this.lineBreak);

    printData = printData..addAll(line);

    printData = printData..addAll(this.stars);*/

    return printData;
  }

  List printableThermal(String inputData) {
    List<int> result = Utf8Codec().encode(inputData + '\u200F');

    return result;
  }

  List<int> printableThermalEnglish(String inputData) {
    return Utf8Codec().encode(inputData);
  }
}