using System;
using System.Collections.Generic;
using RobotAndDonkey.Game.Board;
using RobotAndDonkey.Game.Cards;
using RobotAndDonkey.Game.Data;
using RobotAndDonkey.Game.Execution.Results;
using RobotAndDonkey.Game.GameState;
using RobotAndDonkey.Game.Pois;

namespace RobotAndDonkey.Game.Intents;

public class Move(Cell cell, Card card, EDirection direction, bool ignoreBlocking, int amount) : Intent
{
    public override void Run(Guid requestId, CoreLoop coreLoop, List<Intent> newIntents, List<Result> results)
    {
        if (cell.Type == ECellType.Mud)
        {
            newIntents.Add(new ModifyCurrency(new(-Balancing.Instance.MudMoveEnergyCost, 0, 0, 0, 0, 0)));
        }

        var neighbour = cell.Hex;
        for (int i = 0; i < Amount; ++i)
            neighbour = neighbour.GetNeighbour(Direction);

        var neighbourIndex = coreLoop.Board.FindCellIndex(neighbour);
        if (neighbourIndex < 0)
        {
            results.Add(new InvalidInstructionResult(requestId, EInvalidReason.OutOfBounds, card, cell));
        }
        else
        {
            var neighbourCell = coreLoop.Board.Cells[neighbourIndex];
            if (!ignoreBlocking && (neighbourCell.Type == ECellType.Blocked || neighbourCell.Poi != null))
            {
                results.Add(new InvalidInstructionResult(requestId, EInvalidReason.Blocked, card, neighbourCell));
            }
            else
            {
                var avatar = (Avatar)cell.Poi!;
                cell.Poi = null;
                neighbourCell.Poi = avatar;
                results.Add(new PoiResult(requestId, new(coreLoop.Board), null, cell.Hex));
                results.Add(new PoiResult(requestId, new(coreLoop.Board), avatar, neighbour));
                coreLoop.PathLength += Amount;
                coreLoop.CellsVisited.Add(cell.Hex);
                coreLoop.CellsVisited.Add(neighbour);
                if (coreLoop.Currency.Energy == 0)
                {
                    coreLoop.EnergyWasted += 1;
                }

                foreach (var modifier in neighbourCell.Modifiers)
                {
                    if (modifier.DebuffSources.Count > 0)
                        continue;

                    switch (modifier.Id)
                    {
                        case EModifierId.Corrupt:
                        case EModifierId.Unreliable:
                        case EModifierId.RaceCondition:
                        {
                            var tape = coreLoop.GetTapeCards();
                            var currentIndex = tape.IndexOf(card);
                            for (int i = currentIndex + 1; i < tape.Count; ++i)
                                newIntents.Add(new ModifyCard(tape[i], modifier.Id, EModifierDuration.Temporary, ECardLocation.Tape));
                            break;
                        }
                    }
                }
            }
        }

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

    public EDirection Direction { get; set; } = direction;

    public override bool IsValid(CoreLoop coreLoop) => base.IsValid(coreLoop) && cell.Poi is Avatar;

    public int Amount { get; set; } = amount;

    public override string ToString() => $"Move towards {Direction} by {Amount}, " + base.ToString();
}