using NUnit.Framework;
using SVSim.BattleNode.Lifecycle;
using SVSim.BattleNode.Protocol;
using SVSim.BattleNode.Protocol.Bodies;

namespace SVSim.UnitTests.BattleNode.Lifecycle;

[TestFixture]
public class ScriptedLifecycleTests
{
    [Test]
    public void BuildMatched_PutsOppoIdInSelfInfoEqualToTheRealOpponentVid()
    {
        var env = ScriptedLifecycle.BuildMatched(playerViewerId: 906243102, opponentViewerId: 847666884, battleId: "b");

        Assert.That(env.Uri, Is.EqualTo(NetworkBattleUri.Matched));
        var body = (MatchedBody)env.Body;
        Assert.That(body.SelfInfo.OppoId, Is.EqualTo(847666884L));
        Assert.That(body.OppoInfo.OppoId, Is.EqualTo(906243102L));

        // Bid travels in the envelope, not the Body — protect against the reserved-keys regression.
        Assert.That(env.Bid, Is.EqualTo("b"));
        // Typed bodies can't carry an envelope-level "bid" key by construction (no such property).
    }

    [Test]
    public void BuildMatched_ContainsThirtyCardSelfDeck()
    {
        var env = ScriptedLifecycle.BuildMatched(1, 2, "b");
        var body = (MatchedBody)env.Body;
        Assert.That(body.SelfDeck.Count, Is.EqualTo(30));
    }

    [Test]
    public void BuildBattleStart_HasTurnStateZeroAndBattleTypeEleven()
    {
        var env = ScriptedLifecycle.BuildBattleStart(playerViewerId: 1);
        var body = (BattleStartBody)env.Body;
        Assert.That(body.TurnState, Is.EqualTo(0));
        Assert.That(body.BattleType, Is.EqualTo(11));
    }

    [Test]
    public void BuildDeal_HasThreeSelfAndThreeOppoEntries()
    {
        var env = ScriptedLifecycle.BuildDeal();
        var body = (DealBody)env.Body;
        Assert.That(body.Self.Count, Is.EqualTo(3));
        Assert.That(body.Oppo.Count, Is.EqualTo(3));
    }

    [Test]
    public void ComputeHandAfterSwap_NoSwap_ReturnsInitialHand()
    {
        var hand = ScriptedLifecycle.ComputeHandAfterSwap(Array.Empty<long>());
        Assert.That(hand, Is.EqualTo(new long[] { 1, 2, 3 }));
    }

    [Test]
    public void ComputeHandAfterSwap_SwapMiddleCard_ReplacesWithFreshDeckIdx()
    {
        var hand = ScriptedLifecycle.ComputeHandAfterSwap(new long[] { 2 });
        // pos 0 keeps idx 1; pos 1 (was idx 2) gets next deck idx (4); pos 2 keeps idx 3.
        Assert.That(hand, Is.EqualTo(new long[] { 1, 4, 3 }));
    }

    [Test]
    public void ComputeHandAfterSwap_SwapAll_ReplacesAllWithFreshDeckIdxs()
    {
        var hand = ScriptedLifecycle.ComputeHandAfterSwap(new long[] { 1, 2, 3 });
        Assert.That(hand, Is.EqualTo(new long[] { 4, 5, 6 }));
    }

    [Test]
    public void BuildSwapResponse_RendersGivenHandAsPositions()
    {
        var env = ScriptedLifecycle.BuildSwapResponse(new long[] { 1, 4, 3 });
        var body = (SwapResponseBody)env.Body;
        Assert.That(body.Self.Count, Is.EqualTo(3));
        Assert.That(body.Self[1].Idx, Is.EqualTo(4));
    }

    [Test]
    public void BuildReady_IncludesIdxChangeSeedAndSpin_AndUsesGivenHand()
    {
        var env = ScriptedLifecycle.BuildReady(new long[] { 1, 4, 3 });
        var body = (ReadyBody)env.Body;
        Assert.That(body.IdxChangeSeed, Is.EqualTo(771_335_280));
        Assert.That(body.Spin, Is.EqualTo(243));
        Assert.That(body.Self[1].Idx, Is.EqualTo(4));
    }

    [Test]
    public void BuildOpponentTurnStart_HasUriTurnStartAndSpin()
    {
        var env = ScriptedLifecycle.BuildOpponentTurnStart();
        Assert.That(env.Uri, Is.EqualTo(NetworkBattleUri.TurnStart));
        var body = (OpponentTurnStartBody)env.Body;
        Assert.That(body.Spin, Is.EqualTo(100));
    }
}