Use SHA1 algorithm for Remote OTP QR due to Authy's lack of support f…

…or others.

NightscoutServiceKit/OTPManager.swift

@@ -70,7 +70,8 @@ public class OTPManager {
 
     private var secretStore: OTPSecretStore
     private var nowDateSource: () -> Date
-    let algorithm: Generator.Algorithm = .sha512
+    let algorithm: Generator.Algorithm = .sha1
+    let issuerName = "Loop"
     var tokenPeriod: TimeInterval
     var passwordDigitCount = 6
     public static var defaultTokenPeriod: TimeInterval = 30
@@ -143,7 +144,7 @@ public class OTPManager {
         }
 
         let generator = Generator(factor: .timer(period: TimeInterval(self.tokenPeriod)), secret: secretKeyData, algorithm: algorithm, digits: passwordDigitCount)!
-        return Token(name: "\(secretKeyName)", issuer: "Loop", generator: generator)
+        return Token(name: secretKeyName, issuer: issuerName, generator: generator)
     }
 
     public func getLastPasswordsAscending(count: Int) -> [String] {
@@ -179,16 +180,18 @@ public class OTPManager {
         guard let secretKey = secretStore.tokenSecretKey(), let tokenName = secretStore.tokenSecretKeyName() else {
             return nil
         }
-
+        //otpauth://totp/blah:1630787634876?secret=V45JRIB4TC37FUACFN2YZFKC54EIV7C2&issuer=Loop&algorithm=SHA1&digits=6&period=30
         let queryItems = [
             URLQueryItem(name: "algorithm", value: algorithm.otpURLStringComponent()),
             URLQueryItem(name: "digits", value: "\(passwordDigitCount)"),
-            URLQueryItem(name: "issuer", value: "Loop"),
+            URLQueryItem(name: "issuer", value: issuerName),
             URLQueryItem(name: "period", value: "\(Int(tokenPeriod))"),
             URLQueryItem(name: "secret", value: secretKey),
         ]
-
+        //otpauth://totp/Loop:1630787634876?secret=V45JRIB4TC37FUACFN2YZFK\C54EIV7C2&issuer=Loop&algorithm=SHA1&digits=6&period=30
+        //otpauth://totp/Loop:1630787634876?secret=V45JRIB4TC37FUACFN2YZFKC54EIV7C2&issuer=Loop&algorithm=SHA1&digits=6&period=30
         let components = URLComponents(scheme: "otpauth", host: "totp", path: "/" + tokenName, queryItems: queryItems)
+        print(components.url?.absoluteString)
         return components.url?.absoluteString
     }