Videos cache model

Model/Cache/VideosCacheModel.swift

@@ -0,0 +1,37 @@
+import Cache
+import Foundation
+import Logging
+import SwiftyJSON
+
+struct VideosCacheModel {
+    static let shared = VideosCacheModel()
+    let logger = Logger(label: "stream.yattee.cache.videos")
+
+    static let jsonToDataTransformer: (JSON) -> Data = { try! $0.rawData() }
+    static let jsonFromDataTransformer: (Data) -> JSON = { try! JSON(data: $0) }
+    static let jsonTransformer = Transformer(toData: jsonToDataTransformer, fromData: jsonFromDataTransformer)
+
+    static let videosStorageDiskConfig = DiskConfig(name: "videos")
+    static let vidoesStorageMemoryConfig = MemoryConfig()
+
+    let videosStorage = try! Storage<String, JSON>(
+        diskConfig: Self.videosStorageDiskConfig,
+        memoryConfig: Self.vidoesStorageMemoryConfig,
+        transformer: Self.jsonTransformer
+    )
+
+    func storeVideo(_ video: Video) {
+        logger.info("caching \(video.cacheKey)")
+        try? videosStorage.setObject(video.json, forKey: video.cacheKey)
+    }
+
+    func retrieveVideo(_ cacheKey: String) -> Video? {
+        logger.info("retrieving cache for \(cacheKey)")
+
+        if let json = try? videosStorage.object(forKey: cacheKey) {
+            return Video.from(json)
+        }
+
+        return nil
+    }
+}