Project Cloned

Firebase Project/Firebase Project.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>

Firebase Project/Firebase Project/AppDelegate.swift

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+//
+//  AppDelegate.swift
+//  Firebase Project
+//
+//  Created by Ivan Caldwell on 12/7/18.
+//  Copyright © 2018 Ivan Caldwell. All rights reserved.
+//
+
+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+
+    var window: UIWindow?
+
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        // Override point for customization after application launch.
+        return true
+    }
+
+    func applicationWillResignActive(_ application: UIApplication) {
+        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
+        // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
+    }
+
+    func applicationDidEnterBackground(_ application: UIApplication) {
+        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
+        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
+    }
+
+    func applicationWillEnterForeground(_ application: UIApplication) {
+        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
+    }
+
+    func applicationDidBecomeActive(_ application: UIApplication) {
+        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
+    }
+
+    func applicationWillTerminate(_ application: UIApplication) {
+        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
+    }
+
+
+}
+

Firebase Project/Firebase Project/Assets.xcassets/AppIcon.appiconset/Contents.json

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+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "60x60",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "83.5x83.5",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "size" : "1024x1024",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

Firebase Project/Firebase Project/Assets.xcassets/Contents.json

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

Firebase Project/Firebase Project/Base.lproj/LaunchScreen.storyboard

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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
+        <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"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <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="53" y="375"/>
+        </scene>
+    </scenes>
+</document>

Firebase Project/Firebase Project/Firebase/Firebase.swift

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+import Foundation
+/*
+ READ   <- start the application
+ POST   <- create, creating a new record, Firebase will return a new record identifier
+ PUT    <- update a specific record
+ DELETE <- delete a specific record
+ */
+
+
+class Firebase<Item: Codable & FirebaseItem> {
+    static var baseURL: URL!  { return URL(string: "https://student-firebase-ae727.firebaseio.com/") }
+
+    static func requestURL(_ method: String, for recordIdentifier: String = "unknownid") -> URL {
+        switch method {
+        case "POST":
+            // You post to the main DB. It will return a new record identifier
+            return baseURL.appendingPathExtension("json")
+        case "DELETE", "PUT", "GET":
+            // These all work on individual records, and you need to use the
+            // record identifier in your URL with one exception, which is when
+            // all the records at once, in which case, you do not need the record
+            // identifier.
+            return baseURL
+                .appendingPathComponent(recordIdentifier)
+                .appendingPathExtension("json")
+        default:
+            fatalError("Unknown request method: \(method)")
+        }
+    }
+
+
+    // Handle a single request: meant for DELETE, PUT, POST.
+    // If you were doing a GET, you'd want to pass back a record and not a success token
+    static func processRequest(
+        method: String,
+        for item: Item,
+        with completion: @escaping (_ success: Bool) -> Void = { _ in }
+        ) {
+
+        // Fetch appropriate request URL customized to method
+        var request = URLRequest(url: requestURL(method, for: item.recordIdentifier))
+        request.httpMethod = method
+
+        // Encode this record
+        do {
+            request.httpBody = try JSONEncoder().encode(item)
+        } catch {
+            NSLog("Unable to encode \(item): \(error)")
+            completion(false)
+            return
+        }
+
+        // Create data task to perform request
+        let dataTask = URLSession.shared.dataTask(with: request) { data, _ , error in
+
+            // Fail on error
+            if let error = error {
+                NSLog("Server \(method) error: \(error)")
+                completion(false)
+                return
+            }
+
+            // Handle PUT, GET, DELETE and leave
+            guard method == "POST" else {
+                completion(true)
+                return
+            }
+
+            // Process POST requests
+            // Fetch identifier from POST
+            guard let data = data else {
+                NSLog("Invalid server response data")
+                completion(false)
+                return
+            }
+
+            do {
+
+                // POST request returns `["name": recordIdentifier]`. Store the
+                // record identifier
+                let nameDict = try JSONDecoder().decode([String: String].self, from: data)
+                guard let name = nameDict["name"] else {
+                    completion(false)
+                    return
+                }
+
+                // Update record and store that name. POST is now successful
+                // and includes the recordIdentifier as part of the item record.
+                item.recordIdentifier = name
+                processRequest(method: "PUT", for: item)
+                completion(true)
+
+            } catch {
+
+                NSLog("Error decoding JSON response: \(error)")
+                completion(false)
+                return
+            }
+        }
+        dataTask.resume()
+    }
+
+    static func delete(item: Item, completion: @escaping (_ success: Bool) -> Void = { _ in }) {
+        processRequest(method: "DELETE", for: item, with: completion)
+    }
+
+    static func save(item: Item, completion: @escaping (_ success: Bool) -> Void = { _ in }) {
+        switch item.recordIdentifier.isEmpty {
+        case true: // POST, new record
+            processRequest(method: "POST", for: item, with: completion)
+        case false: // PUT, existing record
+            processRequest(method: "PUT", for: item, with: completion)
+        }
+    }
+
+    // Fetch all records and pass them to sender via completion handler
+    static func fetchRecords(completion: @escaping ([Item]?) -> Void) {
+        let requestURL = baseURL.appendingPathExtension("json")
+        let dataTask = URLSession.shared.dataTask(with: requestURL) { data, _, error in
+
+            guard error == nil, let data = data else {
+                // Guaranteed to work
+                if let error = error {
+                    NSLog("Error fetching entries: \(error)")
+                }
+                completion(nil)
+                return
+            }
+
+            do {
+                let recordDict = try JSONDecoder().decode([String: Item].self, from:data)
+                for (key, value) in recordDict { value.recordIdentifier = key } // pure paranoia
+                let records = recordDict.map({ $0.value }) // This converts the [[id: item]] array of dictionary entries into an array of items
+                completion(records)
+            } catch {
+                NSLog("Error decoding received data: \(error)")
+                completion([])
+            }
+        }
+        dataTask.resume()
+    }
+}
+

Firebase Project/Firebase Project/Firebase/FirebaseItem.swift

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+import Foundation
+
+protocol FirebaseItem: class {
+    var recordIdentifier: String {get set}
+}

Firebase Project/Firebase Project/Info.plist

@@ -0,0 +1,45 @@
+<?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>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>