feat(nahravani): práce na stahování jízdenek

android/app/build.gradle

@@ -26,7 +26,7 @@ apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
-    compileSdkVersion flutter.compileSdkVersion
+    compileSdkVersion 33
     ndkVersion flutter.ndkVersion
 
     compileOptions {
@@ -43,12 +43,11 @@ android {
     }
 
     defaultConfig {
-        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "cz.hernikplays.cvak"
         // You can update the following values to match your application needs.
         // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
-        minSdkVersion flutter.minSdkVersion
+        minSdkVersion 19
-        targetSdkVersion flutter.targetSdkVersion
+        targetSdkVersion 33
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }

android/app/proguard-rules.pro

@@ -0,0 +1 @@
+-keep class androidx.lifecycle.DefaultLifecycleObserver

android/app/src/main/AndroidManifest.xml

@@ -1,7 +1,10 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"
     package="cz.hernikplays.cvak">
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="32"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
+    <uses-permission android:name="android.permission.INTERNET"/>
    <application
-        android:label="cvak"
+        android:label="Cvak"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">
         <activity

android/app/src/main/res/values-cs-rCZ/strings.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="flutter_downloader_notification_started">Stahování začalo</string>
+    <string name="flutter_downloader_notification_in_progress">Stahování probíhá</string>
+    <string name="flutter_downloader_notification_canceled">Stahování zrušeno</string>
+    <string name="flutter_downloader_notification_failed">Stahování selhalo</string>
+    <string name="flutter_downloader_notification_complete">Stahování dokončeno</string>
+    <string name="flutter_downloader_notification_paused">Stahování pozastaveno</string>
+</resources>

lib/api/ceskedrahy.dart

@@ -1,10 +1,28 @@
 import 'dart:convert';
-
+import 'dart:io';
 import 'package:http/http.dart' as http;
 import 'package:json_annotation/json_annotation.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 import 'jizdenka.dart';
 part 'ceskedrahy.g.dart';
 
+/*
+    Copyright (C) 2022 Matyáš Caras
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+    */
+
 class CeskeDrahy {
   final Map<String, String> _cookie = {};
 
@@ -88,8 +106,24 @@ class CeskeDrahy {
         });
     var data = jsonDecode(r.body);
     var jizdenky = <CDJizdenka>[];
+    SharedPreferences p = await SharedPreferences.getInstance();
+    var path = p.getString("dlpath")!;
     for (var j in data["items"]) {
-      jizdenky.add(CDJizdenka.fromJson(j));
+      var cd = CDJizdenka.fromJson(j);
+      // stáhnout obrázek
+      var imgData = await http.get(Uri.parse("https://cd.cz${cd.qrUrl}"),
+          headers: {"Cookie": _cookieString()});
+      // TODO FIX
+      if (imgData.statusCode < 400) {
+        var b64Data =
+            RegExp(r'src="data:image;base64,(.+?)"').firstMatch(imgData.body);
+        if (b64Data != null) {
+          print(b64Data.group(1));
+          File("$path/${j.id}.png")
+              .writeAsBytesSync(base64Decode(b64Data.group(1)!));
+        }
+      }
+      jizdenky.add(cd);
     }
     return jizdenky;
   }
@@ -138,10 +172,18 @@ class CDJizdenka implements Jizdenka {
   @JsonKey(name: "serviceClass")
   final Class trida;
 
+  @JsonKey(name: "aztecImageUrl")
+  final String qrUrl;
+
+  @override
+  @JsonKey(name: "transactionCode")
+  final String id;
+
   factory CDJizdenka.fromJson(Map<String, dynamic> json) =>
       _$CDJizdenkaFromJson(json);
 
   /// Connect the generated [_$PersonToJson] function to the `toJson` method.
+  @override
   Map<String, dynamic> toJson() => _$CDJizdenkaToJson(this);
 
   const CDJizdenka(
@@ -153,7 +195,9 @@ class CDJizdenka implements Jizdenka {
       required this.zeStanice,
       required this.vracena,
       required this.cena,
-      required this.trida});
+      required this.trida,
+      required this.qrUrl,
+      required this.id});
 }
 
 @JsonSerializable()

lib/api/ceskedrahy.g.dart

@@ -19,7 +19,9 @@ CDJizdenka _$CDJizdenkaFromJson(Map<String, dynamic> json) => CDJizdenka(
       zeStanice: json['stationFrom'] as String,
       vracena: json['isRefunded'] as bool,
       cena: const _CenaPrevodnik().fromJson(json['price'] as int),
-      trida: json['serviceClass'],
+      trida: $enumDecode(_$ClassEnumMap, json['serviceClass']),
+      qrUrl: json['aztecImageUrl'] as String,
+      id: json['transactionCode'] as String,
     );
 
 Map<String, dynamic> _$CDJizdenkaToJson(CDJizdenka instance) =>
@@ -32,7 +34,15 @@ Map<String, dynamic> _$CDJizdenkaToJson(CDJizdenka instance) =>
       'stationFrom': instance.zeStanice,
       'isRefunded': instance.vracena,
       'price': const _CenaPrevodnik().toJson(instance.cena),
-      'serviceClass': instance.trida,
+      'serviceClass': _$ClassEnumMap[instance.trida]!,
+      'aztecImageUrl': instance.qrUrl,
+      'transactionCode': instance.id,
+    };
+
+const _$ClassEnumMap = {
+  Class.class2: 'Class2',
+  Class.class1: 'Class1',
+  Class.business: 'Business',
 };
 
 CDSpoj _$CDSpojFromJson(Map<String, dynamic> json) => CDSpoj(

lib/api/jizdenka.dart

@@ -1,6 +1,28 @@
 import 'package:json_annotation/json_annotation.dart';
 
-enum Dopravce { ceskeDrahy, regioJet }
+/*
+    Copyright (C) 2022 Matyáš Caras
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+    */
+
+enum Dopravce {
+  @JsonValue("CESKEDRAHY")
+  ceskeDrahy,
+  @JsonValue("REGIOJET")
+  regioJet
+}
 
 abstract class Jizdenka {
   final Dopravce dopravce;
@@ -12,6 +34,7 @@ abstract class Jizdenka {
   final String jmeno;
   final double cena;
   final Class trida;
+  final String id;
   const Jizdenka(
       {required this.jmeno,
       required this.dopravce,
@@ -21,7 +44,13 @@ abstract class Jizdenka {
       required this.zeStanice,
       required this.doStanice,
       required this.cena,
-      required this.trida});
+      required this.trida,
+      required this.id});
+
+  factory Jizdenka.fromJson(Map<String, dynamic> json) =>
+      throw UnimplementedError();
+
+  Map<String, dynamic> toJson() => throw UnimplementedError();
 }
 
 abstract class Spoj {

lib/helper/bar.dart

@@ -0,0 +1,92 @@
+import 'package:cvak/okna/domu.dart';
+import 'package:cvak/okna/nahrat.dart';
+import 'package:cvak/okna/nastaveni.dart';
+import 'package:flutter/material.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+import 'package:url_launcher/url_launcher.dart';
+
+/*
+    Copyright (C) 2022 Matyáš Caras
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+    */
+
+AppBar bar(context, {String nadpis = "Domů"}) => AppBar(
+      title: Text(nadpis),
+      actions: [
+        PopupMenuButton<String>(
+          itemBuilder: (c) => {'Nastavení', 'O Aplikaci'}
+              .map((e) => PopupMenuItem<String>(value: e, child: Text(e)))
+              .toList(),
+          onSelected: ((value) async {
+            PackageInfo packageInfo = await PackageInfo.fromPlatform();
+            switch (value) {
+              case "Nastavení":
+                Navigator.of(context)
+                    .push(MaterialPageRoute(builder: (c) => const Nastaveni()));
+                break;
+              case "O Aplikaci":
+                showAboutDialog(
+                    context: context,
+                    applicationName: "Cvak",
+                    applicationLegalese:
+                        "Copyright ©️ 2022 Matyáš Caras\nVydáno pod licencí GNU GPLv3",
+                    applicationVersion: packageInfo.version,
+                    children: [
+                      TextButton(
+                        child: const Text("Zdrojový kód"),
+                        onPressed: () => launchUrl(
+                            Uri.parse("https://git.mnau.xyz/hernik/cvak"),
+                            mode: LaunchMode.externalApplication),
+                      )
+                    ]);
+                break;
+            }
+          }),
+        )
+      ],
+    );
+
+Drawer drawer(int selected, BuildContext context) => Drawer(
+      child: ListView(
+        padding: EdgeInsets.zero,
+        children: [
+          const DrawerHeader(child: Text("Cvak")),
+          ListTile(
+            title: const Text("Domů"),
+            leading: const Icon(Icons.home),
+            selected: selected == 1,
+            onTap: () => (selected == 1)
+                ? Navigator.of(context).pop()
+                : Navigator.of(context).pushReplacement(MaterialPageRoute(
+                    builder: (c) => const DomovskaObrazovka())),
+          ),
+          ListTile(
+            title: const Text("Nová jízdenka"),
+            leading: const Icon(Icons.new_label),
+            selected: selected == 2,
+            onTap: () => Navigator.of(context).pop(),
+          ),
+          ListTile(
+            title: const Text("Nahrát jízdenky"),
+            leading: const Icon(Icons.download),
+            selected: selected == 3,
+            onTap: () => (selected == 3)
+                ? Navigator.of(context).pop()
+                : Navigator.of(context).push(
+                    MaterialPageRoute(builder: (c) => const NahratJizdenku())),
+          ),
+        ],
+      ),
+    );

lib/helper/manager.dart

@@ -0,0 +1,54 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:cvak/api/ceskedrahy.dart';
+import 'package:cvak/api/jizdenka.dart';
+import 'package:path_provider/path_provider.dart';
+
+/*
+    Copyright (C) 2022 Matyáš Caras
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+class ManazerJizdenek {
+  static void ulozitJizdenku(Jizdenka j) {
+    var typ = "";
+    if (j is CDJizdenka) {
+      typ = "cd";
+    } else {
+      typ = "local";
+    }
+    var data = {
+      "type": typ,
+      "data": {...j.toJson()}
+    };
+    getApplicationDocumentsDirectory().then((d) =>
+        File("${d.path}/j_${j.id}.json").writeAsStringSync(jsonEncode(data)));
+  }
+
+  static List<Jizdenka> nahratJizdenky() {
+    var jizdenky = <Jizdenka>[];
+    getApplicationDocumentsDirectory().then((d) {
+      for (var file in Directory(d.path).listSync()) {
+        if (!file.path.endsWith(".json")) return;
+        var data = jsonDecode((file as File).readAsStringSync());
+        if (data["type"] == "cd") {
+          jizdenky.add(CDJizdenka.fromJson(data["data"]));
+        }
+      }
+    });
+    return jizdenky;
+  }
+}

lib/helper/theme.dart

@@ -0,0 +1,10 @@
+import 'package:flutter/rendering.dart';
+
+class Vzhled {
+  static const TextStyle nadpis =
+      TextStyle(fontSize: 28, fontWeight: FontWeight.bold);
+  static const TextStyle nadpisJizdenka =
+      TextStyle(fontSize: 20, fontWeight: FontWeight.bold);
+  static const Color okColor = Color.fromARGB(255, 106, 207, 110);
+  static const Color errorColor = Color.fromARGB(255, 207, 106, 106);
+}

lib/main.dart

@@ -1,7 +1,30 @@
 import 'package:cvak/okna/domu.dart';
 import 'package:flutter/material.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
-void main() {
+/*
+    Copyright (C) 2022 Matyáš Caras
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+    */
+void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+  var p = await SharedPreferences.getInstance();
+  if (p.getString("dlpath") == null) {
+    p.setString("dlpath", (await getApplicationDocumentsDirectory()).path);
+  }
   runApp(const MyApp());
 }
 

lib/okna/domu.dart

@@ -1,5 +1,27 @@
-import 'package:cvak/okna/login.dart';
+import 'package:cvak/helper/bar.dart';
+import 'package:cvak/helper/manager.dart';
+import 'package:cvak/helper/theme.dart';
+import 'package:device_info_plus/device_info_plus.dart';
+import 'package:flash/flash.dart';
 import 'package:flutter/material.dart';
+import 'package:permission_handler/permission_handler.dart';
+
+/*
+    Copyright (C) 2022 Matyáš Caras
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+    */
 
 class DomovskaObrazovka extends StatefulWidget {
   const DomovskaObrazovka({super.key});
@@ -9,19 +31,87 @@ class DomovskaObrazovka extends StatefulWidget {
 }
 
 class _DomovskaObrazovkaState extends State<DomovskaObrazovka> {
+  var content = <Widget>[const CircularProgressIndicator()];
+  @override
+  void initState() {
+    super.initState();
+    nacistJizdenky();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
+      appBar: bar(context),
+      drawer: drawer(1, context),
       body: Center(
         child: SizedBox(
-          child: Column(children: [
+          child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [
-            TextButton(
+            const Text(
-                onPressed: (() => Navigator.of(context).push(
+              "Vaše jízdenky",
-                    MaterialPageRoute(builder: (c) => const LoginStranka()))),
+              textAlign: TextAlign.center,
-                child: const Text("Přihlásit"))
+              style: Vzhled.nadpis,
+            ),
+            const SizedBox(
+              height: 15,
+            ),
+            ...content
           ]),
         ),
       ),
     );
   }
+
+  void nacistJizdenky() async {
+    // permissions
+    var androidInfo = await DeviceInfoPlugin().androidInfo;
+    Map<Permission, PermissionStatus> status;
+    if (androidInfo.version.sdkInt <= 32) {
+      status = await [
+        Permission.storage,
+      ].request();
+    } else {
+      status = await [Permission.photos].request();
+    }
+
+    var allAccepted = true;
+    status.forEach((permission, status) {
+      if (status != PermissionStatus.granted) {
+        allAccepted = false;
+      }
+    });
+
+    if (!allAccepted) {
+      showFlash(
+          context: context,
+          duration: const Duration(seconds: 5),
+          builder: (context, controller) => Flash.dialog(
+              controller: controller,
+              backgroundColor: Vzhled.errorColor,
+              child: const Text(
+                  "Aplikace nedokáže bez oprávnění k úložišti pracovat!")));
+      setState(() {
+        content = [const Text("Chybí oprávnění!")];
+      });
+      return;
+    }
+    // permissions end
+
+    var j = ManazerJizdenek.nahratJizdenky();
+    if (j.isEmpty) {
+      setState(() {
+        content = [const Text("Žádné uložené jízdenky :(")];
+      });
+    } else {
+      content = [];
+      for (var jizdenka in j) {
+        content.add(Column(
+          children: [
+            Text("${jizdenka.zeStanice} - ${jizdenka.doStanice}",
+                style: Vzhled.nadpisJizdenka)
+          ],
+        ));
+      }
+      setState(() {});
+    }
+  }
 }

lib/okna/login.dart

@@ -1,69 +0,0 @@
-import 'package:cvak/api/ceskedrahy.dart';
-import 'package:flutter/material.dart';
-
-class LoginStranka extends StatefulWidget {
-  const LoginStranka({super.key});
-
-  @override
-  State<LoginStranka> createState() => _LoginStrankaState();
-}
-
-class _LoginStrankaState extends State<LoginStranka> {
-  final _mailManager = TextEditingController();
-  final _passManager = TextEditingController();
-  var rememberMe = false;
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      body: Center(
-        child: Form(
-          child: Column(mainAxisAlignment: MainAxisAlignment.center, children: [
-            TextFormField(
-              decoration: const InputDecoration(hintText: "E-mail"),
-              controller: _mailManager,
-            ),
-            const SizedBox(
-              height: 15,
-            ),
-            TextFormField(
-              decoration: const InputDecoration(hintText: "Heslo"),
-              controller: _passManager,
-            ),
-            const SizedBox(
-              height: 10,
-            ),
-            Row(children: [
-              Checkbox(
-                value: rememberMe,
-                onChanged: (v) {
-                  rememberMe = v ?? false;
-                },
-              ),
-              const SizedBox(
-                width: 10,
-              ),
-              const Text("Zapamatovat si mě")
-            ]),
-            const SizedBox(height: 10),
-            TextButton(
-                onPressed: () async {
-                  var d = CeskeDrahy();
-                  // otestovat přihlášení
-                  try {
-                    await d.logIn(_mailManager.text, _passManager.text);
-                  } catch (e) {
-                    ScaffoldMessenger.of(context).clearSnackBars();
-                    ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
-                      content: Text(
-                          "Nepodařilo se přihlásit, zkontrolujte údaje a připojení."),
-                      duration: Duration(seconds: 5),
-                    ));
-                  }
-                },
-                child: const Text("Přihlásit se"))
-          ]),
-        ),
-      ),
-    );
-  }
-}

lib/okna/nahrat.dart

@@ -0,0 +1,241 @@
+import 'package:cvak/helper/bar.dart';
+import 'package:cvak/helper/manager.dart';
+import 'package:cvak/helper/theme.dart';
+import 'package:flash/flash.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+import '../api/ceskedrahy.dart';
+
+/*
+    Copyright (C) 2022 Matyáš Caras
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+class NahratJizdenku extends StatefulWidget {
+  const NahratJizdenku({super.key});
+
+  @override
+  State<NahratJizdenku> createState() => _NahratJizdenkuState();
+}
+
+class _NahratJizdenkuState extends State<NahratJizdenku> {
+  final supported = ["České dráhy"];
+  var selected = "České dráhy";
+  var content = [];
+
+  final _mailManager = TextEditingController();
+  final _passManager = TextEditingController();
+  var rememberMe = false;
+  @override
+  void initState() {
+    super.initState();
+    content = [
+      Form(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            TextFormField(
+              decoration: const InputDecoration(hintText: "E-mail"),
+              controller: _mailManager,
+              inputFormatters: [
+                FilteringTextInputFormatter.allow(
+                    RegExp(r'[a-zA-Z\-_0-9\.]+@{0,1}[a-zA-Z\-_0-9\.]{0,}'))
+              ],
+              keyboardType: TextInputType.emailAddress,
+            ),
+            const SizedBox(
+              height: 15,
+            ),
+            TextFormField(
+              decoration: const InputDecoration(hintText: "Heslo"),
+              obscureText: true,
+              controller: _passManager,
+            ),
+            const SizedBox(
+              height: 10,
+            ),
+            Row(children: [
+              Checkbox(
+                value: rememberMe,
+                onChanged: (v) {
+                  rememberMe = v ?? false;
+                },
+              ),
+              const SizedBox(
+                width: 10,
+              ),
+              const Text("Zapamatovat si mě")
+            ]),
+            const SizedBox(height: 10),
+            TextButton(
+                onPressed: () async {
+                  var d = CeskeDrahy();
+                  // otestovat přihlášení
+                  try {
+                    await d.logIn(_mailManager.text, _passManager.text);
+                    for (var jizdenka in await d.ziskatJizdenky()) {
+                      ManazerJizdenek.ulozitJizdenku(jizdenka);
+                    }
+                    if (!mounted) return;
+                    ScaffoldMessenger.of(context).clearSnackBars();
+                    ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
+                      content: Text("Jízdenky úspěšně uloženy."),
+                      duration: Duration(seconds: 5),
+                    ));
+                  } catch (e) {
+                    ScaffoldMessenger.of(context).clearSnackBars();
+                    ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
+                      content: Text(
+                          "Nepodařilo se přihlásit, zkontrolujte údaje a připojení."),
+                      duration: Duration(seconds: 5),
+                    ));
+                  }
+                },
+                child: const Text("Přihlásit se"))
+          ],
+        ),
+      ),
+    ];
+    setState(() {});
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      drawer: drawer(3, context),
+      appBar: bar(context, nadpis: "Nahrát jízdenku"),
+      body: Center(
+        child: SizedBox(
+          width: MediaQuery.of(context).size.width * 0.9,
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              const Text(
+                "Nahrát jízdenku z externího zdroje",
+                textAlign: TextAlign.center,
+                style: Vzhled.nadpis,
+              ),
+              const SizedBox(
+                height: 10,
+              ),
+              DropdownButton(
+                value: selected,
+                items: List.generate(
+                    supported.length,
+                    (i) => DropdownMenuItem(
+                          value: supported[i],
+                          child: Text(supported[i]),
+                        )),
+                onChanged: (v) {
+                  if (v == null) return;
+                  selected = v;
+                  if (v == "České dráhý") {
+                    content = [
+                      Column(
+                        mainAxisAlignment: MainAxisAlignment.center,
+                        children: [
+                          TextField(
+                            controller: _mailManager,
+                            decoration:
+                                const InputDecoration(hintText: "E-mail"),
+                            inputFormatters: [
+                              FilteringTextInputFormatter.allow(RegExp(
+                                  r'[a-zA-Z\-_0-9\.]+@{0,1}[a-zA-Z\-_0-9\.]{0,}'))
+                            ],
+                            keyboardType: TextInputType.emailAddress,
+                          ),
+                          const SizedBox(
+                            height: 15,
+                          ),
+                          TextField(
+                            controller: _passManager,
+                            decoration: const InputDecoration(
+                              hintText: "Heslo",
+                            ),
+                            obscureText: true,
+                          ),
+                          const SizedBox(
+                            height: 10,
+                          ),
+                          Row(children: [
+                            Checkbox(
+                              value: rememberMe,
+                              onChanged: (v) {
+                                rememberMe = v ?? false;
+                              },
+                            ),
+                            const SizedBox(
+                              width: 10,
+                            ),
+                            const Text("Zapamatovat si mě")
+                          ]),
+                          const SizedBox(height: 10),
+                          TextButton(
+                              onPressed: () async {
+                                var d = CeskeDrahy();
+                                // otestovat přihlášení
+                                try {
+                                  await d.logIn(
+                                      _mailManager.text, _passManager.text);
+                                  for (var jizdenka
+                                      in await d.ziskatJizdenky()) {
+                                    ManazerJizdenek.ulozitJizdenku(jizdenka);
+                                  }
+                                  if (!mounted) return;
+                                  showFlash(
+                                    duration: const Duration(seconds: 3),
+                                    context: context,
+                                    builder: ((context, controller) =>
+                                        Flash.bar(
+                                          controller: controller,
+                                          backgroundColor: Vzhled.okColor,
+                                          child: const Text(
+                                              "Jízdenky úspěšně staženy"),
+                                        )),
+                                  );
+                                } catch (e) {
+                                  showFlash(
+                                    duration: const Duration(seconds: 5),
+                                    context: context,
+                                    builder: ((context, controller) =>
+                                        Flash.bar(
+                                          controller: controller,
+                                          backgroundColor: Vzhled.errorColor,
+                                          child: const Text(
+                                              "Chyba při stahování, zkontrolujte údaje a připojení"),
+                                        )),
+                                  );
+                                }
+                              },
+                              child: const Text("Přihlásit se"))
+                        ],
+                      ),
+                    ];
+                  }
+                  setState(() {});
+                },
+              ),
+              const SizedBox(
+                height: 10,
+              ),
+              ...content
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

lib/okna/nastaveni.dart

@@ -0,0 +1,88 @@
+import 'dart:io';
+
+import 'package:cvak/helper/bar.dart';
+import 'package:file_picker/file_picker.dart';
+import 'package:flutter/material.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class Nastaveni extends StatefulWidget {
+  const Nastaveni({super.key});
+
+  @override
+  State<Nastaveni> createState() => _NastaveniState();
+}
+
+class _NastaveniState extends State<Nastaveni> {
+  @override
+  void initState() {
+    super.initState();
+    nacistNastaveni();
+  }
+
+  var content = <Widget>[const CircularProgressIndicator()];
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: bar(context, nadpis: "Nastavení"),
+      body: Center(
+        child: SizedBox(
+          width: MediaQuery.of(context).size.width * 0.9,
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: content,
+          ),
+        ),
+      ),
+    );
+  }
+
+  void nacistNastaveni() async {
+    content = [];
+    SharedPreferences p = await SharedPreferences.getInstance();
+    var dd = (p.getString("dlpath")!).split("/");
+    content.add(Column(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        const Text(
+          "Složka s uloženými QR kódy jízdenek:",
+          style: TextStyle(fontWeight: FontWeight.bold),
+        ),
+        const SizedBox(
+          width: 10,
+        ),
+        Text(dd[dd.length - 1]),
+        const SizedBox(
+          width: 10,
+        ),
+        TextButton(
+            onPressed: () async {
+              String? e = await FilePicker.platform.getDirectoryPath();
+              if (e != null && e != "/") {
+                p.setString("dlpath", e);
+                nacistNastaveni();
+              }
+            },
+            child: const Text("Změnit")),
+        const SizedBox(
+          width: 5,
+        ),
+        TextButton(
+          onPressed: () async {
+            p.setString(
+                "dlpath", (await getApplicationDocumentsDirectory()).path);
+            nacistNastaveni();
+          },
+          child: const Text("Výchozí"),
+        ),
+        const Divider(
+          color: Colors.black,
+          /*TODO: dark theme */
+          height: 4,
+        )
+      ],
+    ));
+    setState(() {});
+  }
+}

pubspec.lock

@@ -155,6 +155,27 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.2.4"
+  device_info_plus:
+    dependency: "direct main"
+    description:
+      name: device_info_plus
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "8.0.0"
+  device_info_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: device_info_plus_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "7.0.0"
+  ffi:
+    dependency: transitive
+    description:
+      name: ffi
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.1"
   file:
     dependency: transitive
     description:
@@ -162,6 +183,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "6.1.4"
+  file_picker:
+    dependency: "direct main"
+    description:
+      name: file_picker
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.2.3"
   fixnum:
     dependency: transitive
     description:
@@ -169,6 +197,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.1"
+  flash:
+    dependency: "direct main"
+    description:
+      name: flash
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.5"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -188,6 +223,18 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.1"
+  flutter_plugin_android_lifecycle:
+    dependency: transitive
+    description:
+      name: flutter_plugin_android_lifecycle
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.7"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   frontend_server_client:
     dependency: transitive
     description:
@@ -250,7 +297,7 @@ packages:
       name: js
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.6.5"
+    version: "0.6.4"
   json_annotation:
     dependency: "direct main"
     description:
@@ -314,6 +361,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.1.0"
+  package_info_plus:
+    dependency: "direct main"
+    description:
+      name: package_info_plus
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.2"
+  package_info_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: package_info_plus_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.1"
   path:
     dependency: transitive
     description:
@@ -321,6 +382,90 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.8.2"
+  path_provider:
+    dependency: "direct main"
+    description:
+      name: path_provider
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.11"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.22"
+  path_provider_ios:
+    dependency: transitive
+    description:
+      name: path_provider_ios
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.11"
+  path_provider_linux:
+    dependency: transitive
+    description:
+      name: path_provider_linux
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.7"
+  path_provider_macos:
+    dependency: transitive
+    description:
+      name: path_provider_macos
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.6"
+  path_provider_platform_interface:
+    dependency: transitive
+    description:
+      name: path_provider_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.5"
+  path_provider_windows:
+    dependency: transitive
+    description:
+      name: path_provider_windows
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.3"
+  permission_handler:
+    dependency: "direct main"
+    description:
+      name: permission_handler
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "10.2.0"
+  permission_handler_android:
+    dependency: transitive
+    description:
+      name: permission_handler_android
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "10.2.0"
+  permission_handler_apple:
+    dependency: transitive
+    description:
+      name: permission_handler_apple
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "9.0.7"
+  permission_handler_platform_interface:
+    dependency: transitive
+    description:
+      name: permission_handler_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.9.0"
+  permission_handler_windows:
+    dependency: transitive
+    description:
+      name: permission_handler_windows
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.2"
   petitparser:
     dependency: transitive
     description:
@@ -328,6 +473,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "5.1.0"
+  platform:
+    dependency: transitive
+    description:
+      name: platform
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.0"
+  plugin_platform_interface:
+    dependency: transitive
+    description:
+      name: plugin_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.3"
   pointycastle:
     dependency: transitive
     description:
@@ -342,6 +501,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.5.1"
+  process:
+    dependency: transitive
+    description:
+      name: process
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "4.2.4"
   pub_semver:
     dependency: transitive
     description:
@@ -356,6 +522,62 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.2.1"
+  shared_preferences:
+    dependency: "direct main"
+    description:
+      name: shared_preferences
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.15"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.14"
+  shared_preferences_ios:
+    dependency: transitive
+    description:
+      name: shared_preferences_ios
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  shared_preferences_linux:
+    dependency: transitive
+    description:
+      name: shared_preferences_linux
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  shared_preferences_macos:
+    dependency: transitive
+    description:
+      name: shared_preferences_macos
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.4"
+  shared_preferences_platform_interface:
+    dependency: transitive
+    description:
+      name: shared_preferences_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.0"
+  shared_preferences_web:
+    dependency: transitive
+    description:
+      name: shared_preferences_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.4"
+  shared_preferences_windows:
+    dependency: transitive
+    description:
+      name: shared_preferences_windows
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
   shelf:
     dependency: transitive
     description:
@@ -445,6 +667,62 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.3.1"
+  url_launcher:
+    dependency: "direct main"
+    description:
+      name: url_launcher
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.1.7"
+  url_launcher_android:
+    dependency: transitive
+    description:
+      name: url_launcher_android
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.0.22"
+  url_launcher_ios:
+    dependency: transitive
+    description:
+      name: url_launcher_ios
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.0.17"
+  url_launcher_linux:
+    dependency: transitive
+    description:
+      name: url_launcher_linux
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1"
+  url_launcher_macos:
+    dependency: transitive
+    description:
+      name: url_launcher_macos
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1"
+  url_launcher_platform_interface:
+    dependency: transitive
+    description:
+      name: url_launcher_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.1.1"
+  url_launcher_web:
+    dependency: transitive
+    description:
+      name: url_launcher_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.13"
+  url_launcher_windows:
+    dependency: transitive
+    description:
+      name: url_launcher_windows
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.0.1"
   vector_math:
     dependency: transitive
     description:
@@ -466,6 +744,20 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.2.0"
+  win32:
+    dependency: transitive
+    description:
+      name: win32
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "3.1.2"
+  xdg_directories:
+    dependency: transitive
+    description:
+      name: xdg_directories
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.0+2"
   xml:
     dependency: transitive
     description:
@@ -482,3 +774,4 @@ packages:
     version: "3.1.1"
 sdks:
   dart: ">=2.18.4 <3.0.0"
+  flutter: ">=3.0.0"

pubspec.yaml

@@ -15,6 +15,14 @@ dependencies:
   json_serializable: ^6.5.4
   cupertino_icons: ^1.0.2
   http: ^0.13.5
+  path_provider: ^2.0.11
+  file_picker: ^5.2.3
+  shared_preferences: ^2.0.15
+  flash: ^2.0.5
+  package_info_plus: ^3.0.2
+  url_launcher: ^6.1.7
+  permission_handler: ^10.2.0
+  device_info_plus: ^8.0.0
 
 dev_dependencies:
   build_runner: ^2.3.2