support multiple servers

ios/App/Shared/models/ServerConnectionConfig.swift

@@ -17,6 +17,11 @@ class ServerConnectionConfig: Object {
     @Persisted var username: String
     @Persisted var token: String
 }
+class ServerConnectionConfigActiveIndex: Object {
+    // This could overflow, but you really would have to try
+    @Persisted var index: Int?
+
+}
 
 func convertServerConnectionConfigToJSON(config: ServerConnectionConfig) -> Dictionary<String, Any> {
     return Database.realmQueue.sync {

ios/App/Shared/player/AudioPlayer.swift

@@ -164,11 +164,11 @@ class AudioPlayer: NSObject {
     // MARK: - Private
     private func createAsset() -> AVAsset {
         let headers: [String: String] = [
-            "Authorization": "Bearer \(Store.serverConfig.token)"
+            "Authorization": "Bearer \(Store.serverConfig!.token)"
         ]
         
         debugPrint(activeAudioTrack)
-        return AVURLAsset(url: URL(string: "\(Store.serverConfig.address)\(activeAudioTrack.contentUrl)")!, options: ["AVURLAssetHTTPHeaderFieldsKey": headers])
+        return AVURLAsset(url: URL(string: "\(Store.serverConfig!.address)\(activeAudioTrack.contentUrl)")!, options: ["AVURLAssetHTTPHeaderFieldsKey": headers])
     }
     private func initAudioSession() {
         do {

ios/App/Shared/util/ApiClient.swift

@@ -24,10 +24,10 @@ class ApiClient {
     
     public static func postResource<T: Decodable>(endpoint: String, parameters: [String: String], decodable: T.Type = T.self, callback: ((_ param: T) -> Void)?) {
         let headers: HTTPHeaders = [
-            "Authorization": "Bearer \(Store.serverConfig.token)"
+            "Authorization": "Bearer \(Store.serverConfig!.token)"
         ]
         
-        AF.request("\(Store.serverConfig.address)/\(endpoint)", method: .post, parameters: parameters, encoder: JSONParameterEncoder.default, headers: headers).responseDecodable(of: decodable) { response in
+        AF.request("\(Store.serverConfig!.address)/\(endpoint)", method: .post, parameters: parameters, encoder: JSONParameterEncoder.default, headers: headers).responseDecodable(of: decodable) { response in
             switch response.result {
             case .success(let obj):
                 callback?(obj)
@@ -50,8 +50,8 @@ class ApiClient {
         ], decodable: PlaybackSession.self) { obj in
             var session = obj
             
-            session.serverConnectionConfigId = Store.serverConfig.id
-            session.serverAddress = Store.serverConfig.address
+            session.serverConnectionConfigId = Store.serverConfig!.id
+            session.serverAddress = Store.serverConfig!.address
             
             callback(session)
         }

ios/App/Shared/util/Database.swift

@@ -9,23 +9,12 @@ import Foundation
 import RealmSwift
 
 class Database {
-    public static let realmQueue = DispatchQueue(label: "realm-queue")
-    
     // All DB releated actions must be executed on "realm-queue"
+    public static let realmQueue = DispatchQueue(label: "realm-queue")
     private static var instance: Realm = {
-        // TODO: handle thread errors
         try! Realm(queue: realmQueue)
     }()
     
-    public static func getActiveServerConfigIndex() -> Int {
-        return realmQueue.sync {
-            guard let config = instance.objects(ServerConnectionConfig.self).first else {
-                return -1
-            }
-            return config.index
-        }
-    }
-    
     public static func setServerConnectionConfig(config: ServerConnectionConfig) {
         var refrence: ThreadSafeReference<ServerConnectionConfig>?
         if config.realm != nil {
@@ -35,6 +24,16 @@ class Database {
         realmQueue.sync {
             let existing: ServerConnectionConfig? = instance.object(ofType: ServerConnectionConfig.self, forPrimaryKey: config.id)
             
+            if config.index == 0 {
+                let lastConfig: ServerConnectionConfig? = instance.objects(ServerConnectionConfig.self).last
+                
+                if lastConfig != nil {
+                    config.index = lastConfig!.index + 1
+                } else {
+                    config.index = 1
+                }
+            }
+            
             do {
                 try instance.write {
                     if existing != nil {
@@ -54,6 +53,8 @@ class Database {
                 NSLog("failed to save server config")
                 debugPrint(exception)
             }
+            
+            setLastActiveConfigIndex(index: config.index)
         }
     }
     public static func getServerConnectionConfigs() -> [ServerConnectionConfig] {
@@ -78,4 +79,30 @@ class Database {
             return []
         }
     }
+    
+    public static func setLastActiveConfigIndexToNil() {
+        realmQueue.sync {
+            setLastActiveConfigIndex(index: nil)
+        }
+    }
+    public static func setLastActiveConfigIndex(index: Int?) {
+        let existing = instance.objects(ServerConnectionConfigActiveIndex.self)
+        let obj = ServerConnectionConfigActiveIndex()
+        obj.index = index
+     
+        do {
+            try instance.write {
+                instance.delete(existing)
+                instance.add(obj)
+            }
+        } catch(let exception) {
+            NSLog("failed to save server config active index")
+            debugPrint(exception)
+        }
+    }
+    public static func getLastActiveConfigIndex() -> Int? {
+        return realmQueue.sync {
+            return instance.objects(ServerConnectionConfigActiveIndex.self).first?.index ?? nil
+        }
+    }
 }

ios/App/Shared/util/NowPlayingInfo.swift

@@ -37,7 +37,7 @@ class NowPlayingInfo {
         }
          */
         
-        guard let url = URL(string: "\(Store.serverConfig.address)/api/items/\(metadata.itemId)/cover?token=\(Store.serverConfig.token)") else {
+        guard let url = URL(string: "\(Store.serverConfig!.address)/api/items/\(metadata.itemId)/cover?token=\(Store.serverConfig!.token)") else {
             return
         }
         

ios/App/Shared/util/Store.swift

@@ -10,20 +10,17 @@ import RealmSwift
 
 class Store {
     @ThreadSafe private static var _serverConfig: ServerConnectionConfig?
-    public static var serverConfig: ServerConnectionConfig {
+    public static var serverConfig: ServerConnectionConfig? {
         get {
-            if _serverConfig == nil {
-                let index = Database.getActiveServerConfigIndex()
-                // TODO: change this when multiple configs are possible
-                _serverConfig = Database.getServerConnectionConfigs().first { config in
-                    return config.index == index
-                }
-            }
-            
-            return _serverConfig ?? ServerConnectionConfig()
+            return _serverConfig
         }
         set(updated) {
-            Database.setServerConnectionConfig(config: updated)
+            if updated != nil {
+                Database.setServerConnectionConfig(config: updated!)
+            } else {
+                Database.setLastActiveConfigIndexToNil()
+            }
+            
             _serverConfig = nil
         }
     }