Initial commit

mlbTVOS/ViewModels/GameCenterViewModel.swift

@@ -0,0 +1,45 @@
+import Foundation
+import Observation
+
+@Observable
+@MainActor
+final class GameCenterViewModel {
+    var feed: LiveGameFeed?
+    var isLoading = false
+    var errorMessage: String?
+    var lastUpdated: Date?
+
+    private let statsAPI = MLBStatsAPI()
+
+    func watch(game: Game) async {
+        guard let gamePk = game.gamePk else {
+            errorMessage = "No live game feed is available for this matchup."
+            return
+        }
+
+        while !Task.isCancelled {
+            await refresh(gamePk: gamePk)
+
+            let liveState = feed?.gameData.status?.abstractGameState == "Live"
+            if !liveState {
+                break
+            }
+
+            try? await Task.sleep(for: .seconds(12))
+        }
+    }
+
+    func refresh(gamePk: String) async {
+        isLoading = true
+        errorMessage = nil
+
+        do {
+            feed = try await statsAPI.fetchGameFeed(gamePk: gamePk)
+            lastUpdated = Date()
+        } catch {
+            errorMessage = "Failed to load game center."
+        }
+
+        isLoading = false
+    }
+}