refactor(kv): 整理存档接线并清理迁移冗余实现

Client/Assets/Scripts/Services/PlayerData/KvRuntimeSelection.cs

@@ -0,0 +1,67 @@
+using System;
+using System.Globalization;
+
+namespace game.KV
+{
+    /// <summary>
+    /// Immutable process-start selection with canonical positive numeric player identities.
+    /// </summary>
+    internal sealed class KvRuntimeSelection
+    {
+        internal bool IsKV
+        {
+            get;
+        }
+        internal Uri Api
+        {
+            get;
+        }
+
+        private KvRuntimeSelection(bool isKV, Uri api)
+        {
+            IsKV = isKV;
+            Api = api;
+        }
+
+        internal static string CompiledBackend
+        {
+            get
+            {
+#if USE_KV
+                return "kv";
+#else
+                return "playfab";
+#endif
+            }
+        }
+
+        internal static KvRuntimeSelection CaptureForBuild(string api)
+        {
+            var backend = CompiledBackend;
+            if (backend == "playfab")
+            {
+                return new KvRuntimeSelection(false, null);
+            }
+            if (!Uri.TryCreate(api, UriKind.Absolute, out var address) ||
+                (address.Scheme != "http" && address.Scheme != "https") ||
+                !string.IsNullOrEmpty(address.UserInfo) || !string.IsNullOrEmpty(address.Query) ||
+                !string.IsNullOrEmpty(address.Fragment))
+            {
+                throw new ArgumentException("KV API address is invalid.", nameof(api));
+            }
+            return new KvRuntimeSelection(true, new Uri(address.AbsoluteUri.TrimEnd('/') + "/"));
+        }
+
+        internal bool TryAdmitPlayer(string requestedId, out string canonicalId)
+        {
+            canonicalId = null;
+            if (!IsKV || !long.TryParse(requestedId, NumberStyles.None, CultureInfo.InvariantCulture, out var id) ||
+                id <= 0)
+            {
+                return false;
+            }
+            canonicalId = id.ToString(CultureInfo.InvariantCulture);
+            return true;
+        }
+    }
+}