356 lines
10 KiB
Dart
356 lines
10 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:pavouk/util/appbar.dart';
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import 'package:pavouk/util/subnet_masky.dart';
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import 'package:pavouk/util/vzhled.dart';
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import 'package:responsive_sizer/responsive_sizer.dart';
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/*
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Copyright (C) 2022 Matyáš Caras
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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class Reseni extends StatefulWidget {
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const Reseni({super.key, required this.origoIp, required this.subnety});
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final String origoIp;
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final List<int> subnety;
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@override
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State<Reseni> createState() => _ReseniState();
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}
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class _ReseniState extends State<Reseni> {
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var origoNetIP = "";
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var content = <TableRow>[
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TableRow(children: [
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TableCell(
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child: Text(
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"Název",
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style: Vzhled.text,
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textAlign: TextAlign.center,
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),
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),
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TableCell(
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child: Text("Požadovaný počet zařízení",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Reálný počet zařízení",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Adresa sítě",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Prefix masky",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Adresa prvního zařízení",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Adresa posledního zařízení",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Adresa broadcastu",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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])
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];
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@override
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void initState() {
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super.initState();
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var p = widget.origoIp.split("/");
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var nm = p[1];
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origoNetIP = "${Util.ipToNetworkAdd(p[0], Util.prefixToMask(nm))}/$nm";
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for (var i = 0; i < widget.subnety.length; i++) {
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content.add(TableRow(children: [
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TableCell(
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child: Text(Util.alphabet[i],
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child:
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Text(widget.subnety[i].toString(), textAlign: TextAlign.center),
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),
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const TableCell(
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child: SizedBox(height: 50),
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),
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const TableCell(
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child: SizedBox(height: 50),
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),
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const TableCell(
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child: SizedBox(height: 50),
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),
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const TableCell(
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child: SizedBox(height: 50),
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),
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const TableCell(
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child: SizedBox(height: 50),
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),
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const TableCell(
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child: SizedBox(height: 50),
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),
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]));
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}
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setState(() {});
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: bar(context, i: 1),
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body: SingleChildScrollView(
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child: Center(
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child: SizedBox(
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width: (Device.orientation == Orientation.landscape) ? 90.w : 100.w,
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height: 100.h,
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child:
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Column(mainAxisAlignment: MainAxisAlignment.center, children: [
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const SizedBox(
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height: 30,
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),
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TextButton(
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onPressed: () => ukaz(),
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style: Vzhled.tlacitkoStyl,
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child: const Text(
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"Ukázat řešení",
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style: Vzhled.tlacitkoText,
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),
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),
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const SizedBox(
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height: 30,
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),
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Row(
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children: [
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Text(
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"Zadaná IP (sítě):",
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style: Vzhled.tableContent(context),
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),
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const SizedBox(
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width: 20,
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),
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Text(origoNetIP, style: Vzhled.tableContent(context))
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],
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),
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DefaultTextStyle(
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style: Vzhled.tableContent(context),
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child: Expanded(
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child: Table(
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border: TableBorder.all(
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color: Theme.of(context).colorScheme.inverseSurface),
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defaultVerticalAlignment: TableCellVerticalAlignment.middle,
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defaultColumnWidth: FixedColumnWidth(
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Device.orientation == Orientation.landscape
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? 90.w / 8
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: 100.w / 8),
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children: content,
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),
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),
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)
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]),
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),
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),
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),
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);
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}
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void ukaz() {
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// Resetovat obsah
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content = <TableRow>[
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TableRow(children: [
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TableCell(
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child: Text(
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"Název",
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style: Vzhled.text,
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textAlign: TextAlign.center,
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),
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),
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TableCell(
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child: Text("Požadovaný počet zařízení",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Reálný počet zařízení",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Adresa sítě",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Prefix masky",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Adresa prvního zařízení",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Adresa posledního zařízení",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: Text("Adresa broadcastu",
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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])
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];
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// seřazení
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var kopie = [];
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kopie.addAll(widget.subnety);
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widget.subnety.sort((a, b) => b.compareTo(a));
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var iplist = [];
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for (var i = 0; i < widget.subnety.length; i++) {
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var sub = Util.subnety(); // načíst možné subnet masky
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var ip = "";
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if (i == 0) {
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ip = origoNetIP.split("/")[0]; // na začátku nastavíme OG adresu
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} else {
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ip = zvysitIp(iplist[i -
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1]); // jinak nastavujeme předchozí adresu broadcastu o jedno větší
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}
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var prefix = sub.where((element) {
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var id = sub.indexOf(element);
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bool levo, pravo = false;
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// kontrolujeme, že zleva i zprava nejsou lepší hodnoty
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if (id > 0) {
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levo = (sub[id - 1]["hosti"]! - 2 <= widget.subnety[i]);
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} else {
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levo = true;
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}
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if (id < widget.subnety.length - 1) {
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pravo = (sub[id + 1]["hosti"]! - 2 >= widget.subnety[i]);
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} else {
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pravo = true;
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}
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if (levo && pravo) {
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return sub[id]["hosti"]! - 2 >=
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widget.subnety[
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i]; // a zkontrolujeme že naše samotná hodnota je dostatečná
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} else {
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return false;
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}
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}).toList()[0];
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var prvni = zvysitIp(ip);
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var posledni = zvysitIp(ip);
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for (var j = 0; j < prefix["hosti"]! - 3; j++) {
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posledni = zvysitIp(posledni);
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}
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var broadcast = zvysitIp(posledni);
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iplist.add(broadcast);
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content.add(TableRow(children: [
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TableCell(
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child: Text(Util.alphabet[kopie.indexOf(widget.subnety[i])],
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style: Vzhled.text, textAlign: TextAlign.center),
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),
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TableCell(
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child: SizedBox(
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height: 50,
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child: Center(
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child: Text(
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widget.subnety[i].toString(),
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textAlign: TextAlign.center,
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),
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),
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)),
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TableCell(
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child: SizedBox(
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height: 50,
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child: Center(
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child: Text((prefix["hosti"]! - 2).toString(),
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textAlign: TextAlign.center),
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),
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)),
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TableCell(
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child: SizedBox(
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height: 50,
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child: Center(child: Text(ip, textAlign: TextAlign.center))),
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),
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TableCell(
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child: SizedBox(
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height: 50,
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child: Center(
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child: Text(prefix["prefix"]!.toString(),
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textAlign: TextAlign.center),
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),
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),
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),
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TableCell(
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child: SizedBox(
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height: 50,
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child: Center(
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child: Text(prvni, textAlign: TextAlign.center),
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),
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),
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),
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TableCell(
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child: SizedBox(
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height: 50,
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child: Center(
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child: Text(posledni, textAlign: TextAlign.center),
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),
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),
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),
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TableCell(
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child: SizedBox(
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height: 50,
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child: Center(
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child: Text(broadcast, textAlign: TextAlign.center),
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),
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),
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),
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]));
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}
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setState(() {});
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}
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String zvysitIp(String ip) {
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var p = ip.split(".");
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var p1 = int.parse(p[0]);
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var p2 = int.parse(p[1]);
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var p3 = int.parse(p[2]);
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var p4 = int.parse(p[3]);
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if (p4 == 255) {
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if (p3 == 255) {
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if (p2 == 255) {
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p1++;
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p2 = 0;
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p3 = 0;
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p4 = 0;
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} else {
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p2++;
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p3 = 0;
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p4 = 0;
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}
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} else {
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p3++;
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p4 = 0;
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}
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} else {
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p4++;
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}
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return "$p1.$p2.$p3.$p4";
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}
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}
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