cvak/lib/api/ceskedrahy.dart

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import 'dart:convert';
import 'dart:io';
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import 'package:http/http.dart' as http;
import 'package:json_annotation/json_annotation.dart';
import 'package:shared_preferences/shared_preferences.dart';
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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/>.
*/
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class CeskeDrahy {
final Map<String, String> _cookie = {};
void _parseCookies(List<String> c) {
for (var full in c) {
var cookie = full.split(";")[0].split("=");
if (cookie.length < 2) continue;
_cookie[cookie[0]] = "${cookie[1]}${(cookie[0] == 'RSID') ? '=' : ''};";
}
}
String _cookieString() {
var s = "";
for (var key in _cookie.keys) {
s += "$key=${_cookie[key]}; ";
}
return s;
}
Future<void> logIn(String user, String pass) async {
var r = await http.post(
Uri.parse("https://www.cd.cz/profil-uzivatele/auth/login"),
body: {"username": user, "password": pass, "remember": "true"});
var cookies = r.headers["set-cookie"]!.split(",").toList();
var je = false;
for (var element in cookies) {
if (element.contains("RSID")) {
je = true;
}
}
if (!je) return Future.error("Neplatné údaje");
_parseCookies(cookies);
}
Future<List<CDJizdenka>> ziskatJizdenky() async {
if (_cookie.isEmpty) return Future.error("Chybí přihlášení");
var rft = await http.get(Uri.parse("https://www.cd.cz/eshop/historie"),
headers: {"Cookie": _cookieString()});
_parseCookies(rft.headers["set-cookie"]!.split(",").toList());
var token = RegExp(
r'(?<=name="__RequestVerificationToken" type="hidden" value=").+?(?=")')
.firstMatch(rft.body)!
.group(0)
.toString();
var r = await http.post(
Uri.parse("https://www.cd.cz/eshop/GetUserHistoryData/"),
headers: {
"Cookie": _cookieString()
},
body: {
"__RequestVerificationToken": token,
"model[pageSize]": "10",
"model[items]": "",
"model[allItemsCount]": "0",
"model[buyAgainCartItemID]": "0",
"model[initPassengers][mapData]": "",
"model[initPassengers][defaultPassenger]": "",
"model[initPassengers][avatars]": "",
"model[isActive]": "false",
"model[filter][order]": "1",
"model[filter][ticketStatus]": "0",
"model[filter][target]": "1",
"model[filter][cartItemID]": "0",
"model[filter][enableFilter]": "false",
"model[filter][showFilter]": "false",
"model[filter][filterIssueDate]": "",
"model[filter][filterValidFromDate]": "",
"model[filter][filterName]": "",
"model[filter][filterTransactionCode]": "",
"model[filter][filterCorporateNS]": "",
"model[filter][corporateNSEnabled]": "false",
"model[orderTypes][0][name]": "Data+zakoupení",
"model[orderTypes][0][value]": "0",
"model[orderTypes][0][shortName]": "",
"model[orderTypes][1][name]": "Data+a+času+odjezdu",
"model[orderTypes][1][value]": "1",
"model[orderTypes][1][shortName]": "",
"model[pageNumber]": "0",
"model[initOnly]": "false",
"model[allEmpty]": "true"
});
var data = jsonDecode(r.body);
var jizdenky = <CDJizdenka>[];
SharedPreferences p = await SharedPreferences.getInstance();
var path = p.getString("dlpath")!;
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for (var j in data["items"]) {
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/${j.id}.png")
.writeAsBytesSync(base64Decode(b64Data.group(1)!));
}
}
jizdenky.add(cd);
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}
return jizdenky;
}
}
@JsonSerializable()
class CDJizdenka implements Jizdenka {
@override
@JsonKey(name: "stationTo")
final String doStanice;
@override
final Dopravce dopravce = Dopravce.ceskeDrahy;
@override
@JsonKey(name: "name")
final String jmeno;
@override
@JsonKey(name: "validity")
@_DatumPlatnostiPrevodnik()
final DateTime platiDo;
@override
@JsonKey(name: "validFrom", disallowNullValue: false)
@_DatumPlatnostiPrevodnik()
final DateTime platiOd;
@override
@JsonKey(name: "trainsThere")
final List<CDSpoj> spoje;
@override
@JsonKey(name: "stationFrom")
final String zeStanice;
@JsonKey(name: "isRefunded")
final bool vracena;
@override
@JsonKey(name: "price")
@_CenaPrevodnik()
final double cena;
@override
@JsonKey(name: "serviceClass")
final Class trida;
@JsonKey(name: "aztecImageUrl")
final String qrUrl;
@override
@JsonKey(name: "transactionCode")
final String id;
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factory CDJizdenka.fromJson(Map<String, dynamic> json) =>
_$CDJizdenkaFromJson(json);
/// Connect the generated [_$PersonToJson] function to the `toJson` method.
@override
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Map<String, dynamic> toJson() => _$CDJizdenkaToJson(this);
const CDJizdenka(
{required this.doStanice,
required this.jmeno,
required this.platiOd,
required this.platiDo,
required this.spoje,
required this.zeStanice,
required this.vracena,
required this.cena,
required this.trida,
required this.qrUrl,
required this.id});
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}
@JsonSerializable()
class CDSpoj implements Spoj {
@override
@JsonKey(name: "train")
final String nazev;
@override
@JsonKey(name: "stationFrom")
final String zeStanice;
@override
@JsonKey(name: "stationTo")
final String doStanice;
@override
@JsonKey(name: "stationFromDate")
@_DatumPlatnostiPrevodnik()
final DateTime odjezdDen;
@override
@JsonKey(name: "stationToDate")
@_DatumPlatnostiPrevodnik()
final DateTime prijezdDen;
const CDSpoj(
{required this.nazev,
required this.zeStanice,
required this.doStanice,
required this.odjezdDen,
required this.prijezdDen});
factory CDSpoj.fromJson(Map<String, dynamic> json) => _$CDSpojFromJson(json);
/// Connect the generated [_$PersonToJson] function to the `toJson` method.
Map<String, dynamic> toJson() => _$CDSpojToJson(this);
}
class _DatumPlatnostiPrevodnik implements JsonConverter<DateTime, String?> {
const _DatumPlatnostiPrevodnik();
@override
DateTime fromJson(String? json) {
if (json == null) {
return DateTime.fromMillisecondsSinceEpoch(1);
} else {
var d = json.split(".");
return DateTime.parse(
"${d[2]}-${int.parse(d[1]) < 10 ? '0${d[1]}' : d[1]}-${int.parse(d[0]) < 10 ? '0${d[0]}' : d[0]}");
}
}
@override
String toJson(DateTime object) => object.toLocal().toIso8601String();
}
class _CenaPrevodnik implements JsonConverter<double, int> {
const _CenaPrevodnik();
@override
double fromJson(int json) => json / 100;
@override
int toJson(double object) {
try {
return (object * 100) as int;
} catch (e) {
return -1;
}
}
}