using System.Linq;
using NUnit.Framework;
using SVSim.BattleNode.Sessions.Engine;

namespace SVSim.BattleEngine.Tests.SessionEngine
{
    [TestFixture]
    public class SessionEngineConstructionTests
    {
        [Test]
        public void SessionBattleEngine_instantiates_and_is_not_ready_before_setup()
        {
            var engine = new SessionBattleEngine();
            Assert.That(engine.IsReady, Is.False);
        }

        [Test]
        public void Setup_builds_two_seat_network_battle_headless()
        {
            HeadlessEngineEnv.EnsureInitialized();
            // Load every card id the two test decks reference so CardMaster can resolve them.
            var deckA = Enumerable.Repeat(100011010L, 40).ToList(); // vanilla 1/2 follower x40
            var deckB = Enumerable.Repeat(100011010L, 40).ToList();
            HeadlessCardMaster.Load(100011010);

            var engine = new SessionBattleEngine();
            Assert.DoesNotThrow(() => engine.Setup(masterSeed: 12345, seatADeck: deckA, seatBDeck: deckB));
            Assert.That(engine.IsReady, Is.True);
        }

        [Test]
        public void Receive_one_playactions_resolves_headless()
        {
            HeadlessEngineEnv.EnsureInitialized();

            var cl1 = CaptureReplay.Load("battle_test_cl1.ndjson");
            var deck = CaptureReplay.SelfDeckFrom(cl1);
            // Load ALL deck ids in ONE call: HeadlessCardMaster.Load replaces the static CardMaster each
            // call, so a per-id loop would leave only the last card resolvable.
            HeadlessCardMaster.Load(deck.Select(x => (int)x).Distinct().ToArray());

            var engine = new SessionBattleEngine();
            engine.Setup(CaptureReplay.SeedFrom(cl1), seatADeck: deck, seatBDeck: deck);

            var firstPlay = cl1.First(f => f.Direction == "send" && f.Uri == "PlayActions");
            var result = engine.Receive(firstPlay.Env, isPlayerSeat: true);

            Assert.That(result.RejectReason, Is.Null, $"ingest threw/rejected: {result.RejectReason}");
            Assert.That(result.Accepted, Is.True);
        }
    }
}