Initial commit

MensaGuthaben.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

MensaGuthaben.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

MensaGuthaben/AppDelegate.swift

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+//
+//  AppDelegate.swift
+//  MensaGuthaben
+//
+//  Created by Johannes Kreutz on 22.08.19.
+//  Copyright © 2019 Johannes Kreutz. All rights reserved.
+//
+//  This file is part of MensaGuthaben.
+//
+//  MensaGuthaben 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.
+//
+//  MensaGuthaben 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 MensaGuthaben. If not, see <http://www.gnu.org/licenses/>.
+//
+
+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        // Override point for customization after application launch.
+        return true
+    }
+
+    // MARK: UISceneSession Lifecycle
+
+    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
+        // Called when a new scene session is being created.
+        // Use this method to select a configuration to create the new scene with.
+        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
+    }
+
+    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
+        // Called when the user discards a scene session.
+        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
+        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
+    }
+
+}
+

MensaGuthaben/Assets.xcassets/AppIcon.appiconset/Contents.json

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+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "icon-20@2x.heic",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "icon-20@3x.heic",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "icon-29@2x.heic",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "icon-29@3x.heic",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "icon-40@2x.heic",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "icon-60@2x-1.heic",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "icon-60@2x.heic",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "icon-60@3x.heic",
+      "scale" : "3x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "icon-1024.heic",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

MensaGuthaben/Assets.xcassets/Contents.json

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+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

MensaGuthaben/Base.lproj/LaunchScreen.storyboard

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+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14865.1" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <device id="retina4_7" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14819.2"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="Logo_rund.png" translatesAutoresizingMaskIntoConstraints="NO" id="CgN-8X-BVM">
+                                <rect key="frame" x="16" y="162" width="343" height="343"/>
+                                <constraints>
+                                    <constraint firstAttribute="width" constant="343" id="76f-fV-aoZ"/>
+                                    <constraint firstAttribute="height" constant="343" id="m3Y-PS-CTU"/>
+                                </constraints>
+                            </imageView>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" misplaced="YES" text="MensaGuthaben" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="JGq-ja-n4W">
+                                <rect key="frame" x="50" y="221" width="314" height="47"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="44"/>
+                                <color key="textColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                            <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFit" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="JKM Logo.png" translatesAutoresizingMaskIntoConstraints="NO" id="Vo0-4T-7OT">
+                                <rect key="frame" x="52.5" y="618" width="270" height="44"/>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="44" id="0CN-mA-QEz"/>
+                                    <constraint firstAttribute="width" constant="270" id="U8K-at-IL7"/>
+                                </constraints>
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" cocoaTouchSystemColor="viewFlipsideBackgroundColor"/>
+                        <constraints>
+                            <constraint firstItem="CgN-8X-BVM" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="8Vz-fC-7Iy"/>
+                            <constraint firstItem="6Tk-OE-BBY" firstAttribute="bottom" secondItem="Vo0-4T-7OT" secondAttribute="bottom" constant="5" id="8iF-A9-uTt"/>
+                            <constraint firstItem="Vo0-4T-7OT" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="HtE-to-OYo"/>
+                            <constraint firstItem="JGq-ja-n4W" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="WMm-oD-TdZ"/>
+                            <constraint firstItem="CgN-8X-BVM" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="cUv-XP-uAa"/>
+                            <constraint firstItem="CgN-8X-BVM" firstAttribute="top" secondItem="JGq-ja-n4W" secondAttribute="bottom" constant="15" id="pLx-qL-h6Y"/>
+                        </constraints>
+                        <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="52" y="374.66266866566718"/>
+        </scene>
+    </scenes>
+    <resources>
+        <image name="JKM Logo.png" width="398" height="80"/>
+        <image name="Logo_rund.png" width="241" height="241"/>
+    </resources>
+</document>

MensaGuthaben/CardScanner.swift

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+//
+//  CardScanner.swift
+//  MensaGuthaben
+//
+//  Created by Johannes Kreutz on 25.08.19.
+//  Copyright © 2019 Johannes Kreutz. All rights reserved.
+//
+//  This file is part of MensaGuthaben.
+//
+//  MensaGuthaben 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.
+//
+//  MensaGuthaben 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 MensaGuthaben. If not, see <http://www.gnu.org/licenses/>.
+//
+
+import Foundation
+import PromiseKit
+import JKDesFireReader
+
+class CardScanner: JKDesFireReaderDelegate {
+
+    // MARK: Properties
+
+    let delegate: CardScannerDelegate
+    var reader: JKDesFireReader? = nil
+
+    // MARK: Initialization
+
+    init(delegate: CardScannerDelegate) {
+        self.delegate = delegate
+    }
+
+    // MARK: Control reader session
+
+    func scan() {
+        // Only start a new scanning session if there is no session open
+        guard reader == nil else {
+            return
+        }
+        reader = JKDesFireReader(start: false, delegate: self)
+        reader?.setSessionInfoText(text: "Bitte halte deine Mensakarte an die Oberkante deines iPhone.")
+        reader?.setErrorInfoText(text: "Leider konnte deine Karte nicht gelesen werden.")
+
+        // Start session
+        if !(reader?.createReaderSession())! {
+            print("Error creating reader session in JKDesFireReader.")
+        }
+    }
+
+    func sessionRunning() -> Bool {
+        return reader == nil ? false : true
+    }
+
+    // MARK: Delegate functions
+
+    func didDetectDesFireTag() {
+        firstly {
+            (reader?.listApplications())!
+        }.done { response in
+            var cardKnown: Bool = false
+            var appId: UInt32 = 0
+            var fileId: UInt8 = 0
+
+            // Check if we know an application id
+            for id in response {
+                if self.isCardValid(card: id) {
+                    cardKnown = true
+                    appId = id
+                    fileId = self.getFileId(card: id)!
+                }
+            }
+
+            // Show error message if card is unknown
+            guard cardKnown else {
+                self.reader?.stopRunningSession(errorMessage: "Leider konnte deine Karte nicht gelesen werden: Unbekannte Karte (ERR_APPLICATION_NOT_FOUND).")
+                self.delegate.sessionCancel()
+                return
+            }
+
+            // Select application
+            firstly {
+                (self.reader?.selectApplication(applicationId: appId))!
+            }.done { application in
+                var fileFound: Bool = false
+
+                // Check if the wanted file is available
+                for file in application.getFiles() {
+                    if (file == fileId) {
+                        fileFound = true
+                    }
+                }
+
+                // Show error message if card is unknown
+                guard fileFound else {
+                    self.reader?.stopRunningSession(errorMessage: "Leider konnte deine Karte nicht gelesen werden: Unbekannte Karte (ERR_FILE_NOT_FOUND).")
+                    self.delegate.sessionCancel()
+                    return
+                }
+
+                // Get file settings
+                application.getFileSettings(fileId: fileId)
+                .done { settings in
+                    var lastTransaction: Int = 0
+
+                    if let valueSettings = settings as? JKDesFireValueFileSettings {
+                        lastTransaction = valueSettings.getValue()
+                    } else {
+                        self.reader?.stopRunningSession(errorMessage: "Leider konnte deine Karte nicht gelesen werden: Fehler beim Lesen (ERR_NO_VALUE_FILE).")
+                        self.delegate.sessionCancel()
+                    }
+
+                    // Read value
+                    application.getValue(fileId: fileId)
+                    .done { value in
+                        self.delegate.newDataAvailable(current: value.getValue(), previous: lastTransaction)
+                        self.reader?.stopRunningSession()
+                    }.catch { error in
+                        self.reader?.stopRunningSession(errorMessage: "Leider konnte deine Karte nicht gelesen werden: Fehler beim Lesen (ERR_READ_VALUE).")
+                        self.delegate.sessionCancel()
+                    }
+                }.catch { error in
+                    self.reader?.stopRunningSession(errorMessage: "Leider konnte deine Karte nicht gelesen werden: Fehler beim Lesen (ERR_READ_FILE_SETTINGS).")
+                    self.delegate.sessionCancel()
+                }
+
+            }.catch { error in
+                self.reader?.stopRunningSession(errorMessage: "Leider konnte deine Karte nicht gelesen werden: Fehler beim Lesen (ERR_SELECT_APPLICATION).")
+                self.delegate.sessionCancel()
+            }
+
+        }.catch { error in
+            print("Error getting application list: " + error.localizedDescription)
+            self.reader?.stopRunningSession(errorMessage: "Leider konnte deine Karte nicht gelesen werden. (Fehlercode " + error.localizedDescription + ")")
+            self.delegate.sessionCancel()
+        }
+    }
+
+    func tagDetectionError(error: JKDesFirePublicError) {
+        print("Error detecting tag: " + error.localizedDescription)
+        self.reader?.stopRunningSession(errorMessage: "Leider konnte deine Karte nicht gelesen werden. (Fehlercode " + error.localizedDescription + ")")
+        self.delegate.sessionCancel()
+    }
+
+    // MARK: Private helpers
+
+    private func isCardValid(card: UInt32) -> Bool {
+        return getCard(id: card) != nil ? true : false
+    }
+
+    private func getFileId(card: UInt32) -> UInt8? {
+        let c: Card? = getCard(id: card)
+        if (c != nil) {
+            return c!.fileId
+        }
+        return nil
+    }
+
+    private func getCard(id: UInt32) -> Card? {
+        for (_, card) in Cards.c {
+            if (card.applicationId == id) {
+                return card
+            }
+        }
+        return nil
+    }
+
+}