COVIDSafe code from version 1.1

CovidSafe/Feedback/Sources/JMCTargetJSONFromDisk.swift

@@ -0,0 +1,45 @@
+//  Copyright © 2020 Australian Government All rights reserved.
+
+import Foundation
+
+extension JMCTarget {
+  static let JSONFileName = "JMCTarget"
+
+  public static func createTargetFromJSONOnDisk() throws -> JMCTarget {
+    guard let JMCTargetJSONPath = Foundation.Bundle.main.path(forResource: JSONFileName, ofType: "json") else {
+      throw JMCTargetJSONOnDiskError.jsonFileMissingFromBundleError
+    }
+    return try JMCTarget(JSONFilePath: JMCTargetJSONPath)
+  }
+
+  init(JSONFilePath: String) throws {
+    guard let JMCTargetData = try? Data(contentsOf: URL(fileURLWithPath: JSONFilePath)) else {
+      throw JMCTargetJSONOnDiskError.readJSONFileError
+    }
+    try self.init(JSONData: JMCTargetData)
+  }
+
+  init(JSONData: Data) throws {
+    let JSONObject = try JSONSerialization.jsonObject(with: JSONData, options: [])
+    guard let JMCTargetDictionary = JSONObject  as? [String : NSObject] else {
+      throw JMCTargetJSONOnDiskError.jsonDictionaryToInstanceError
+    }
+    try self.init(JSONDictionary: JMCTargetDictionary )
+  }
+
+  init(JSONDictionary: [String: NSObject]) throws {
+    guard let host = JSONDictionary["host"] as? String,
+      let apiKey = JSONDictionary["apiKey"] as? String,
+      let projectKey = JSONDictionary["projectKey"] as? String else {
+        throw JMCTargetJSONOnDiskError.jsonDictionaryToInstanceError
+    }
+    self.init(host: host, apiKey: apiKey, projectKey: projectKey)
+  }
+
+}
+
+public enum JMCTargetJSONOnDiskError: Error {
+  case jsonFileMissingFromBundleError
+  case readJSONFileError
+  case jsonDictionaryToInstanceError
+}