// ─────────────────────────────────────────────────────────────────────
// AuthValuesInjector — PARKED 2026-05-28 (december-2020-12-18)
// ─────────────────────────────────────────────────────────────────────
//
// Filename suffix is .cs.attic on purpose so the .NET SDK's globber
// doesn't pick it up. Don't rename to .cs unless you're putting the
// feature back.
//
// What this used to do
// --------------------
// Built a Photon AuthenticationValues with `userid` + `LoginLock`
// custom-auth parameters from the in-game RecNet account state. The
// server's /photon/customauth controller (PhotonCustomAuthController.cs)
// validated those parameters against the player's /player/login lock.
//
// Status in this branch
// ---------------------
// The method existed but was **never actually wired to a harmony
// hook** in this branch's OnLateInitializeMelon. December's Photon
// AuthValues path goes through PhotonPatches.LogAuthValues_Postfix
// (postfix on PUNNetworkManager.EMGGKBALALH), which only logs — it
// doesn't inject. So this code was effectively dead in december.
//
// Removed because:
//   1. Photon Cloud is currently configured with Custom Authentication
//      disabled at the AppId level (anonymous connects allowed), so
//      no server-side auth probe.
//   2. Even when the watch did send AuthValues, the upstream Cloudflare
//      / Localtunnel layer 403'd Photon's auth probe before our
//      controller could decide anything.
//
// How to put it back
// ------------------
// 1. Rename this file to AuthValuesInjector.cs (drop the .attic suffix).
// 2. Reinstate the `InjectAuthValues` field on Mod.Cfg + the LoadConfig
//    line.
// 3. Wire the harmony hook in OnLateInitializeMelon. The march branch's
//    pick of NetworkingPeer.CallAuthenticate doesn't fire in IL2CPP, so
//    consider hooking PUNNetworkManager.EMGGKBALALH postfix instead and
//    mutating its returned AuthValues in place — that's the mangled
//    method december verifies fires (LogAuthValues_Postfix already
//    proves this entry point works).
// 4. Put `"InjectAuthValues": true` back in dorknet-clientmod.json.template.
// 5. If you also want the server to enforce the lock, set
//    Photon__RequireCustomAuth=true on the server.

using System.Reflection;

namespace DorkNet.ClientMod.Attic;

internal static class AuthValuesInjector
{
    public static void AuthValuesInjector_Prefix(object __instance)
    {
        if (!Mod.Cfg.InjectAuthValues) return;
        try
        {
            // Photon's AuthValues live on PhotonNetwork.AuthValues. The 2020
            // watch never sets them itself, so we set them right before
            // NetworkingPeer.CallAuthenticate forwards to the wire op. The
            // userid is RecNet.Core.LocalAccountId, the LoginLock comes
            // from PlayerPrefs key LoginLockTokenV2.
            // RecNet.Core.LocalAccountId is declared `int` in the game
            // build (dump.cs:573622 → 0x30 backing field). Convert via
            // Convert.ToInt64 so boxing as int still gives us the long we
            // need below; a direct (long) cast on boxed int would throw.
            var coreType = FindGameType("RecNet.Core");
            var accountIdObj = coreType?.GetProperty("LocalAccountId", BindingFlags.Public | BindingFlags.Static)?.GetValue(null);
            var accountId = accountIdObj is null ? 0L : Convert.ToInt64(accountIdObj);
            if (accountId <= 0)
            {
                Mod.Log.Msg("[auth-injector] skip — no LocalAccountId yet (pre-login Photon ping)");
                return;
            }

            var photonNetwork = FindGameType("PhotonNetwork");
            var avProp = photonNetwork?.GetProperty("AuthValues", BindingFlags.Public | BindingFlags.Static);
            var existing = avProp?.GetValue(null);
            if (existing is not null)
            {
                var userIdProp = existing.GetType().GetProperty("UserId");
                var existingUserId = userIdProp?.GetValue(existing) as string;
                if (!string.IsNullOrEmpty(existingUserId)) return;
            }

            var token = GetCurrentLockToken();

            var authValuesType = FindGameType("ExitGames.Client.Photon.LoadBalancing.AuthenticationValues");
            if (authValuesType is null) { Mod.Log.Warning("[auth-injector] AuthenticationValues type not found"); return; }
            var av = Activator.CreateInstance(authValuesType);
            var authTypeProp = authValuesType.GetProperty("AuthType");
            if (authTypeProp is not null)
            {
                var customAuthValue = authTypeProp.PropertyType.IsEnum
                    ? Enum.ToObject(authTypeProp.PropertyType, 0)
                    : Convert.ChangeType(0, authTypeProp.PropertyType);
                authTypeProp.SetValue(av, customAuthValue);
            }
            authValuesType.GetProperty("UserId")?.SetValue(av, accountId.ToString());
            var addParam = authValuesType.GetMethod("AddAuthParameter", new[] { typeof(string), typeof(string) });
            addParam?.Invoke(av, new object[] { "userid", accountId.ToString() });
            addParam?.Invoke(av, new object[] { "LoginLock", token ?? string.Empty });

            avProp?.SetValue(null, av);
            Mod.Log.Msg($"[auth-injector] set AuthValues userid={accountId} LoginLock={(string.IsNullOrEmpty(token) ? "<missing>" : "<set>")}");
        }
        catch (Exception ex) { Mod.Log.Warning($"[auth-injector] failed: {ex.Message}"); }
    }

    private static string? GetCurrentLockToken()
    {
        try
        {
            var playerPrefs = FindGameType("UnityEngine.PlayerPrefs");
            var getString = playerPrefs?.GetMethod("GetString", new[] { typeof(string), typeof(string) });
            var raw = (string?)getString?.Invoke(null, new object[] { "LoginLockTokenV2", string.Empty });
            if (string.IsNullOrEmpty(raw)) return null;
            const string key = "\"LockToken\":\"";
            var ix = raw.IndexOf(key, StringComparison.Ordinal);
            if (ix < 0) return null;
            ix += key.Length;
            var end = raw.IndexOf('"', ix);
            return end < 0 ? null : raw[ix..end];
        }
        catch { return null; }
    }

    // FindGameType in the live Mod.cs is a delegate to Mod.ResolveType.
    // Use that on restore; this is just a placeholder to keep the file
    // compilable if someone untreats it without re-checking the wiring.
    private static Type? FindGameType(string name) => null;
}