using RobotAndDonkey.Game.Board;
using RobotAndDonkey.Game.Cards;
using RobotAndDonkey.Game.Data;
using RobotAndDonkey.Game.Execution;
using RobotAndDonkey.Game.Execution.Results;
using RobotAndDonkey.Game.GameState;
using RobotAndDonkey.Game.Modifiers;
using RobotAndDonkey.Game.Pois;
using RobotAndDonkey.Game.Robots;
using RobotAndDonkey.Game.Utils;

namespace RobotAndDonkey.Game.Intents;

public class RunProgram : Intent
{
    public static IEnumerable<(Entity Entity, ECardLocation Location)> CollectEntities(CoreLoop coreLoop)
    {
        yield return (coreLoop.Robot, ECardLocation.Robot);

        foreach (var card in coreLoop.PatchDeck)
            yield return (card, ECardLocation.Deck);

        foreach (var card in coreLoop.Hand)
            yield return (card, ECardLocation.Hand);

        foreach (var card in coreLoop.Tape)
            yield return (card, ECardLocation.Tape);

        foreach (var card in coreLoop.Discard)
            yield return (card, ECardLocation.Discard);

        foreach (var card in coreLoop.Board.Cells)
            yield return (card, ECardLocation.Board);
    }

    public override void Run(Guid requestId, CoreLoop coreLoop, List<Intent> newIntents, List<Result> results)
    {
        var board = coreLoop.Board;

        coreLoop.ProgramsExecuted += 1;
        results.Add(new ProgramResult(requestId, coreLoop.ProgramsExecuted));

        var modifierStack = new ModifierStack();
        modifierStack.Push(coreLoop.Robot);

        var tapeCards = coreLoop.GetTapeCards();
        var minCount = Math.Min(tapeCards.Count, coreLoop.Currency.TapeLength);

        for (var i = 0; i < minCount; i++)
        {
            var card = tapeCards[i];
            if (!card.Modifiers.Any(m => m is { Id: EModifierId.RaceCondition, DebuffSources.Count: 0 }))
                continue;

            if (coreLoop.Random.NextSingle() > Balancing.Instance.RaceConditionChance)
                continue;

            var targetIndex = CardExtensions.NextIndexConsideringCorruption(i, coreLoop);
            if (targetIndex >= 0 && targetIndex < tapeCards.Count)
            {
                results.Add(new ModifyCardResult(requestId, tapeCards[targetIndex].DeepClone(), EModifierId.RaceCondition, ECardLocation.Tape));
                if (coreLoop.SwapTapeCards(i, targetIndex))
                {
                    (tapeCards[i], tapeCards[targetIndex]) = (tapeCards[targetIndex], tapeCards[i]);
                    results.Add(new ProgramRowResult(requestId, coreLoop.ProgramRow.ToArray(), coreLoop.TapeCardIds));
                    results.Add(new TapeResult(requestId, tapeCards.ToArray()));
                }
            }
        }

        tapeCards = coreLoop.GetTapeCards();
        minCount = Math.Min(tapeCards.Count, coreLoop.Currency.TapeLength);

        for (var i = 0; i < minCount; i++)
        {
            var card = tapeCards[i];
            var avatarCell = board.Cells.Single(c => c.Poi is Avatar);
            modifierStack.Push(avatarCell);
            modifierStack.Push(card);

            results.Add(new RunCardResult(requestId, card));
            var intents = new List<Intent>();
            card.CreateIntents(avatarCell, coreLoop, requestId, intents, results);
            modifierStack.Execute(requestId, coreLoop, intents, results, false, true);
            coreLoop.InstructionsUsed += 1;

            modifierStack.Pop();
            modifierStack.Pop();
        }

        modifierStack.Pop();

        static IEnumerable<(Entity Owner, Modifier Modifier, ECardLocation Location)> CollectModifiers(CoreLoop coreLoop, EModifierDuration duration)
        {
            foreach (var (entity, location) in CollectEntities(coreLoop))
            {
                foreach (var modifier in entity.Modifiers)
                {
                    if (modifier.Duration == duration)
                        yield return (entity, modifier, location);
                }
            }
        }

        void RemoveModifier(Entity entity, Modifier modifier, ECardLocation location)
        {
            entity.RemoveModifier(modifier, newIntents);
            if (entity is Cell cell)
                results.Add(new ModifyCellResult(requestId, new(coreLoop.Board), modifier.Id, cell.Hex));
            if (entity is Card card)
                results.Add(new ModifyCardResult(requestId, card.DeepClone(), modifier.Id, location));
            if (entity is Robot)
                results.Add(new ModifyRobotResult(requestId));
        }

        foreach (var (entity, modifier, location) in CollectModifiers(coreLoop, EModifierDuration.ShortTerm).ToArray())
            RemoveModifier(entity, modifier, location);

        tapeCards = coreLoop.GetTapeCards();
        foreach (var card in tapeCards)
        {
            var isPersistent = card.Modifiers.Any(m => m is PersistentModifier && m.DebuffSources.Count == 0);

            if (!isPersistent)
            {
                coreLoop.Discard.Add(card);
                coreLoop.RemoveProgramCard(card);
            }
        }
        coreLoop.ClearTapeSelection();
        coreLoop.ProgramCount -= 1;

        results.Add(new ProgramRowResult(requestId, coreLoop.ProgramRow.ToArray(), coreLoop.TapeCardIds));
        results.Add(new CurrencyResult(requestId, coreLoop.Currency));
        results.Add(new HandResult(requestId, coreLoop.Hand.ToArray()));
        results.Add(new DiscardResult(requestId, coreLoop.Discard.ToArray()));
        results.Add(new ProgramResult(requestId, coreLoop.ProgramCount));
        results.Add(new TapeResult(requestId, coreLoop.Tape.ToArray()));
        results.Add(new DeckResult(requestId, coreLoop.PatchDeck.ToArray()));

        var victory = coreLoop.Board.Cells.Select(c => c.Poi as Shed).Where(s => s != null).Sum(s => s!.Remaining) == 0;
        if (coreLoop.ProgramCount == 0 || coreLoop.PatchDeck.Count == 0 || coreLoop.Currency.Energy <= 0 || victory)
        {
            coreLoop.Currency.Energy += Balancing.Instance.EndOfProgramEnergyReplenish;
            coreLoop.RunPhase = ERunPhase.Scoring;

            foreach (var (entity, modifier, location) in CollectModifiers(coreLoop, EModifierDuration.Temporary).ToArray())
            {
                RemoveModifier(entity, modifier, location);
            }

            results.Add(new HandResult(requestId, coreLoop.Hand.ToArray()));
            results.Add(new DiscardResult(requestId, coreLoop.Discard.ToArray()));
            results.Add(new TapeResult(requestId, coreLoop.Tape.ToArray()));
            results.Add(new DeckResult(requestId, coreLoop.PatchDeck.ToArray()));

            results.Add(new RunPhaseResult(requestId, coreLoop.RunPhase));
        }
        else
        {
            coreLoop.DrawHand();
        }

        base.Run(requestId, coreLoop, newIntents, results);
    }

    public override bool IsValid(CoreLoop coreLoop)
    {
        if (!base.IsValid(coreLoop))
            return false;

        return coreLoop.RunPhase == ERunPhase.ExecuteProgram;
    }

    public override bool Immune => true;

    public override string ToString() => "Run program, " + base.ToString();
}