Refactor storage model to work with native Realm

ios/App/Shared/models/local/LocalMediaProgress.swift

@@ -0,0 +1,168 @@
+//
+//  LocalMediaProgress.swift
+//  App
+//
+//  Created by Ron Heft on 8/16/22.
+//
+
+import Foundation
+import RealmSwift
+
+class LocalMediaProgress: Object, Codable {
+    @Persisted(primaryKey: true) var id: String = ""
+    @Persisted(indexed: true) var localLibraryItemId: String = ""
+    @Persisted(indexed: true) var localEpisodeId: String?
+    @Persisted var duration: Double = 0
+    @Persisted var progress: Double = 0
+    @Persisted var currentTime: Double = 0
+    @Persisted var isFinished: Bool = false
+    @Persisted var lastUpdate: Int = 0
+    @Persisted var startedAt: Int = 0
+    @Persisted var finishedAt: Int?
+    // For local lib items from server to support server sync
+    @Persisted var serverConnectionConfigId: String?
+    @Persisted var serverAddress: String?
+    @Persisted var serverUserId: String?
+    @Persisted(indexed: true) var libraryItemId: String?
+    @Persisted(indexed: true) var episodeId: String?
+
+    var progressPercent: Int { Int(self.progress * 100) }
+    
+    private enum CodingKeys : String, CodingKey {
+        case id, localLibraryItemId, localEpisodeId, duration, progress, currentTime, isFinished, lastUpdate, startedAt, finishedAt, serverConnectionConfigId, serverAddress, serverUserId, libraryItemId, episodeId
+    }
+    
+    override init() {
+        super.init()
+    }
+    
+    required init(from decoder: Decoder) throws {
+        super.init()
+
+        let values = try decoder.container(keyedBy: CodingKeys.self)
+        id = try values.decode(String.self, forKey: .id)
+        localLibraryItemId = try values.decode(String.self, forKey: .localLibraryItemId)
+        localEpisodeId = try? values.decode(String.self, forKey: .localEpisodeId)
+        duration = try values.decode(Double.self, forKey: .duration)
+        progress = try values.decode(Double.self, forKey: .progress)
+        currentTime = try values.decode(Double.self, forKey: .currentTime)
+        isFinished = try values.decode(Bool.self, forKey: .isFinished)
+        lastUpdate = try values.decode(Int.self, forKey: .lastUpdate)
+        startedAt = try values.decode(Int.self, forKey: .startedAt)
+        finishedAt = try? values.decode(Int.self, forKey: .finishedAt)
+        serverConnectionConfigId = try? values.decode(String.self, forKey: .serverConnectionConfigId)
+        serverAddress = try? values.decode(String.self, forKey: .serverAddress)
+        serverUserId = try? values.decode(String.self, forKey: .serverUserId)
+        libraryItemId = try? values.decode(String.self, forKey: .libraryItemId)
+        episodeId = try? values.decode(String.self, forKey: .episodeId)
+    }
+
+    func encode(to encoder: Encoder) throws {
+        var container = encoder.container(keyedBy: CodingKeys.self)
+        try container.encode(id, forKey: .id)
+        try container.encode(localLibraryItemId, forKey: .localLibraryItemId)
+        try container.encode(localEpisodeId, forKey: .localEpisodeId)
+        try container.encode(duration, forKey: .duration)
+        try container.encode(progress, forKey: .progress)
+        try container.encode(currentTime, forKey: .currentTime)
+        try container.encode(isFinished, forKey: .isFinished)
+        try container.encode(lastUpdate, forKey: .lastUpdate)
+        try container.encode(startedAt, forKey: .startedAt)
+        try container.encode(finishedAt, forKey: .finishedAt)
+        try container.encode(serverConnectionConfigId, forKey: .serverConnectionConfigId)
+        try container.encode(serverAddress, forKey: .serverAddress)
+        try container.encode(serverUserId, forKey: .serverUserId)
+        try container.encode(libraryItemId, forKey: .libraryItemId)
+        try container.encode(episodeId, forKey: .episodeId)
+    }
+}
+
+extension LocalMediaProgress {
+    convenience init(localLibraryItem: LocalLibraryItem, episode: PodcastEpisode?) {
+        self.init()
+        
+        self.id = localLibraryItem.id
+        self.localLibraryItemId = localLibraryItem.id
+        self.libraryItemId = localLibraryItem.libraryItemId
+        
+        self.serverAddress = localLibraryItem.serverAddress
+        self.serverUserId = localLibraryItem.serverUserId
+        self.serverConnectionConfigId = localLibraryItem.serverConnectionConfigId
+        
+        self.duration = localLibraryItem.getDuration()
+        self.progress = 0.0
+        self.currentTime = 0.0
+        self.isFinished = false
+        self.lastUpdate = Int(Date().timeIntervalSince1970)
+        self.startedAt = 0
+        self.finishedAt = nil
+        
+        if let episode = episode {
+            self.id += "-\(episode.id)"
+            self.episodeId = episode.id
+            self.duration = episode.duration ?? 0.0
+        }
+    }
+    
+    convenience init(localLibraryItem: LocalLibraryItem, episode: PodcastEpisode?, progress: MediaProgress) {
+        self.init(localLibraryItem: localLibraryItem, episode: episode)
+        self.duration = progress.duration
+        self.progress = progress.progress
+        self.currentTime = progress.currentTime
+        self.isFinished = progress.isFinished
+        self.lastUpdate = progress.lastUpdate
+        self.startedAt = progress.startedAt
+        self.finishedAt = progress.finishedAt
+    }
+    
+    func updateIsFinished(_ finished: Bool) {
+        try! Realm().write {
+            if self.isFinished != finished {
+                self.progress = finished ? 1.0 : 0.0
+            }
+
+            if self.startedAt == 0 && finished {
+                self.startedAt = Int(Date().timeIntervalSince1970)
+            }
+            
+            self.isFinished = finished
+            self.lastUpdate = Int(Date().timeIntervalSince1970)
+            self.finishedAt = finished ? lastUpdate : nil
+        }
+    }
+    
+    func updateFromPlaybackSession(_ playbackSession: PlaybackSession) {
+        try! Realm().write {
+            self.currentTime = playbackSession.currentTime
+            self.progress = playbackSession.progress
+            self.lastUpdate = Int(Date().timeIntervalSince1970)
+            self.isFinished = playbackSession.progress >= 100.0
+            self.finishedAt = self.isFinished ? self.lastUpdate : nil
+        }
+    }
+    
+    func updateFromServerMediaProgress(_ serverMediaProgress: MediaProgress) {
+        try! Realm().write {
+            self.isFinished = serverMediaProgress.isFinished
+            self.progress = serverMediaProgress.progress
+            self.currentTime = serverMediaProgress.currentTime
+            self.duration = serverMediaProgress.duration
+            self.lastUpdate = serverMediaProgress.lastUpdate
+            self.finishedAt = serverMediaProgress.finishedAt
+            self.startedAt = serverMediaProgress.startedAt
+        }
+    }
+    
+    static func fetchOrCreateLocalMediaProgress(localMediaProgressId: String?, localLibraryItemId: String?, localEpisodeId: String?) -> LocalMediaProgress? {
+        if let localMediaProgressId = localMediaProgressId {
+            return Database.shared.getLocalMediaProgress(localMediaProgressId: localMediaProgressId)
+        } else if let localLibraryItemId = localLibraryItemId {
+            guard let localLibraryItem = Database.shared.getLocalLibraryItem(localLibraryItemId: localLibraryItemId) else { return nil }
+            let episode = localLibraryItem.getPodcastEpisode(episodeId: localEpisodeId)
+            return LocalMediaProgress(localLibraryItem: localLibraryItem, episode: episode)
+        } else {
+            return nil
+        }
+    }
+}
+