iOS-firebase

Detail.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>

Detail/AppDelegate.swift

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+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+    var window: UIWindow?
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        return true
+    }
+}

Detail/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"
+  }
+}

Detail/Assets.xcassets/Contents.json

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

Detail/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>

Detail/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://my-awesome-project-id-5bed7.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()
+    }
+}

Detail/Firebase/FirebaseItem.swift

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

Detail/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>