using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Globalization;
using System.Linq;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
using Avalonia.Controls;
using Avalonia.Layout;
using Avalonia.Media;
using Avalonia.Threading;

namespace DDApplication;

public partial class MainWindow : Window
{
    private const int MapRadius = 10;
    private static readonly TimeSpan TickDelay = TimeSpan.FromMilliseconds(70);

    private static readonly IReadOnlyDictionary<BotAction, TimeSpan> Cooldowns = new Dictionary<BotAction, TimeSpan>
    {
        [BotAction.Move] = TimeSpan.FromMilliseconds(250),
        [BotAction.Hit] = TimeSpan.FromMilliseconds(250),
        [BotAction.Radar] = TimeSpan.FromMilliseconds(250),
        [BotAction.Shoot] = TimeSpan.FromMilliseconds(1000),
        [BotAction.Peek] = TimeSpan.FromMilliseconds(1000),
        [BotAction.Scan] = TimeSpan.FromMilliseconds(2000),
        [BotAction.Dash] = TimeSpan.FromMilliseconds(5000),
        [BotAction.Special] = TimeSpan.FromMilliseconds(5000),
        [BotAction.Teleport] = TimeSpan.FromMilliseconds(20000),
    };

    private readonly string _configuredApiKey = Program.Configuration["APIKEY"] ?? string.Empty;
    private readonly HttpClient _httpClient = new() { Timeout = TimeSpan.FromSeconds(8) };
    private readonly DigitalDojoApiClient _client;
    private readonly ObservableCollection<string> _logEntries = [];
    private readonly Dictionary<(int X, int Y), double> _enemyHeat = [];
    private readonly Dictionary<string, int> _lastRadar = new(StringComparer.OrdinalIgnoreCase);
    private readonly Dictionary<Direction, PeekEntitiesAsyncResponse> _lastPeek = [];
    private readonly Dictionary<BotAction, DateTimeOffset> _lastUse = [];
    private readonly Dictionary<Direction, int> _blockedDirectionTicks = [];
    private readonly Queue<DateTimeOffset> _recentDeaths = new();
    private readonly TextBlock[,] _mapCells = new TextBlock[MapRadius * 2 + 1, MapRadius * 2 + 1];
    private readonly Random _random = new();

    private CancellationTokenSource? _runCts;
    private Task? _runTask;
    private BotSessionLogger? _sessionLogger;

    private Guid _playerToken;
    private Guid? _gameToken;
    private bool _botRunning;
    private int _x;
    private int _y;
    private int _peekDirectionIndex;
    private int _kills;
    private int _deaths;
    private double _currentHealth;
    private double _maxHealth;
    private double _progress;
    private double _remainingTime;
    private string _levelName = "-";
    private DateTimeOffset _lastStatsAt = DateTimeOffset.MinValue;
    private DateTimeOffset _lastStatusAt = DateTimeOffset.MinValue;
    private (int X, int Y)? _nearestEnemy;
    private Direction _lastMoveDirection = Direction.North;
    private int _recentDamageTicks;
    private int _survivalTicks;
    private bool _lastUnderPressure;

    public MainWindow()
    {
        _client = new DigitalDojoApiClient("https://game-dd.countit.at", _httpClient);

        InitializeComponent();
        BuildKnowledgeGrid();

        ApiKeyBox.Text = _configuredApiKey;
        LogList.ItemsSource = _logEntries;

        StartButton.Click += async (_, _) => await StartBotAsync();
        StopButton.Click += async (_, _) => await StopBotAsync(closeGame: true);

        RenderTelemetry("Waiting to start.");
    }

    protected override async void OnClosed(EventArgs e)
    {
        await StopBotAsync(closeGame: false);
        _httpClient.Dispose();
        base.OnClosed(e);
    }

    private async Task StartBotAsync()
    {
        if (_botRunning)
        {
            return;
        }

        if (!Guid.TryParse(ApiKeyBox.Text, out var parsedToken))
        {
            SetStatus("Invalid API key GUID.");
            return;
        }

        _playerToken = parsedToken;
        _runCts = new CancellationTokenSource();
        _botRunning = true;
        _sessionLogger = new BotSessionLogger();
        _sessionLogger.LogEvent("session-start", "Bot session created");

        StartButton.IsEnabled = false;
        StopButton.IsEnabled = true;
        ApiKeyBox.IsEnabled = false;

        ResetKnowledgeState();

        var started = await EnsureGameStartedAsync(_runCts.Token);
        if (!started)
        {
            await StopBotAsync(closeGame: false);
            return;
        }

        AppendLog($"Logging to {_sessionLogger.EventsPath}");
        SetStatus("Bot running.");
        _runTask = Task.Run(() => BotLoopAsync(_runCts.Token));
    }

    private async Task StopBotAsync(bool closeGame)
    {
        if (_runCts is not null)
        {
            _runCts.Cancel();
        }

        if (_runTask is not null)
        {
            try
            {
                await _runTask;
            }
            catch (OperationCanceledException)
            {
                // Normal shutdown path.
            }
        }

        _runTask = null;
        _runCts?.Dispose();
        _runCts = null;

        if (closeGame && _playerToken != Guid.Empty)
        {
            try
            {
                await _client.CloseAsync(_playerToken);
                AppendLog("Game closed.");
            }
            catch (Exception ex)
            {
                AppendLog($"Close failed: {ex.Message}");
            }
        }

        if (_sessionLogger is not null)
        {
            _sessionLogger.LogEvent("session-stop", "Bot session stopping");
            _sessionLogger.WriteSummaryAndDispose(_currentHealth, _maxHealth, _kills, _deaths);
            AppendLog($"Summary CSV written: {_sessionLogger.SummaryCsvPath}");
            _sessionLogger = null;
        }

        _botRunning = false;
        StartButton.IsEnabled = true;
        StopButton.IsEnabled = false;
        ApiKeyBox.IsEnabled = true;
        SetStatus("Stopped.");
    }

    private async Task<bool> EnsureGameStartedAsync(CancellationToken ct)
    {
        try
        {
            var status = await _client.StatusAsync(_playerToken, ct);
            if (status.Running)
            {
                _gameToken = Guid.TryParse(status.Gameid, out var existingGameId) ? existingGameId : null;
                _levelName = status.Level ?? "-";
                AppendLog("Reusing running game.");
                return true;
            }
        }
        catch (ApiException<ErrorResponse>)
        {
            // No game running yet.
        }
        catch (Exception ex)
        {
            AppendLog($"Status check failed: {ex.Message}");
            return false;
        }

        try
        {
            var created = await _client.CreateAsync(_playerToken, ct);
            _gameToken = Guid.TryParse(created.Gameid, out var gameId) ? gameId : null;
            _levelName = created.Level ?? "-";
            AppendLog($"Game created ({_gameToken?.ToString() ?? "unknown"}).");
            return true;
        }
        catch (Exception ex)
        {
            AppendLog($"Create failed: {ex.Message}");
            return false;
        }
    }

    private async Task BotLoopAsync(CancellationToken ct)
    {
        while (!ct.IsCancellationRequested)
        {
            try
            {
                if (_recentDamageTicks > 0)
                {
                    _recentDamageTicks--;
                }

                if (_survivalTicks > 0)
                {
                    _survivalTicks--;
                }

                DecayBlockedDirections();
                await PollTelemetryAsync(ct);
                DecayHeat();
                await GatherSensorsAsync(ct);

                var decision = BuildDecision();
                if (decision is not null)
                {
                    var executed = await decision.Value.Execute(ct);
                    _sessionLogger?.LogDecision(
                        decision.Value.Label,
                        executed,
                        _currentHealth,
                        _maxHealth,
                        _kills,
                        _deaths,
                        _x,
                        _y,
                        _lastUnderPressure,
                        decision.Value.Reason);

                    if (executed)
                    {
                        AppendLog($"{decision.Value.Label}: {decision.Value.Reason}");
                    }
                }

                RenderTelemetry(decision?.Reason ?? "Scanning...");
                RenderKnowledgeGrid();
            }
            catch (OperationCanceledException)
            {
                break;
            }
            catch (Exception ex)
            {
                AppendLog($"Loop error: {ex.Message}");
                await Task.Delay(300, ct);
            }

            await Task.Delay(TickDelay, ct);
        }
    }

    private async Task PollTelemetryAsync(CancellationToken ct)
    {
        var now = DateTimeOffset.UtcNow;

        if (now - _lastStatsAt >= TimeSpan.FromMilliseconds(650))
        {
            _lastStatsAt = now;
            try
            {
                var stats = await _client.StatsAsync(_playerToken, ct);
                var previousHealth = _currentHealth;
                var previousDeaths = _deaths;
                _kills = stats.Stats?.Kills ?? _kills;
                _deaths = stats.Stats?.Deaths ?? _deaths;
                _currentHealth = stats.Health?.Currenthealth ?? _currentHealth;
                _maxHealth = stats.Health?.Maxhealth ?? _maxHealth;
                _progress = stats.Level?.Progress ?? _progress;
                _remainingTime = stats.Level?.Remainingtime ?? _remainingTime;
                _levelName = stats.Level?.Name ?? _levelName;

                if (previousHealth > 0.1 && _currentHealth + 0.05 < previousHealth)
                {
                    _recentDamageTicks = 20;
                }

                if (_deaths > previousDeaths)
                {
                    var nowDeath = DateTimeOffset.UtcNow;
                    _recentDeaths.Enqueue(nowDeath);
                    while (_recentDeaths.Count > 0 && nowDeath - _recentDeaths.Peek() > TimeSpan.FromSeconds(90))
                    {
                        _recentDeaths.Dequeue();
                    }

                    _survivalTicks = Math.Max(_survivalTicks, 180 + _recentDeaths.Count * 30);
                    _x = 0;
                    _y = 0;
                    _enemyHeat.Clear();
                    _nearestEnemy = null;
                    _sessionLogger?.LogEvent("death", $"death_count={_deaths};death_window_90s={_recentDeaths.Count}");
                }

                _sessionLogger?.LogTelemetry(
                    _currentHealth,
                    _maxHealth,
                    _kills,
                    _deaths,
                    _progress,
                    _remainingTime,
                    _levelName,
                    _x,
                    _y,
                    $"survival_ticks={_survivalTicks};damage_ticks={_recentDamageTicks}");
            }
            catch (Exception ex)
            {
                AppendLog($"Stats failed: {ex.Message}");
            }
        }

        if (now - _lastStatusAt >= TimeSpan.FromSeconds(2))
        {
            _lastStatusAt = now;
            try
            {
                var status = await _client.StatusAsync(_playerToken, ct);
                _levelName = status.Level ?? _levelName;
                if (_gameToken is null && Guid.TryParse(status.Gameid, out var gameId))
                {
                    _gameToken = gameId;
                }
            }
            catch
            {
                // Status occasionally fails while game is rotating; ignore.
            }
        }
    }

    private async Task GatherSensorsAsync(CancellationToken ct)
    {
        if (Ready(BotAction.Radar))
        {
            try
            {
                var radar = await _client.RadarAsync(_playerToken, ct);
                MarkUsed(BotAction.Radar);
                _lastRadar.Clear();
                foreach (var kvp in radar.RadarResults ?? new Dictionary<string, int>())
                {
                    _lastRadar[kvp.Key] = kvp.Value;
                }

                ApplyRadarHeat();
            }
            catch (Exception ex)
            {
                AppendLog($"Radar failed: {ex.Message}");
            }
        }

        if (Ready(BotAction.Scan))
        {
            try
            {
                var scan = await _client.ScanAsync(_playerToken, ct);
                MarkUsed(BotAction.Scan);
                var sx = scan.DifferenceToNearestPlayer?.X;
                var sy = scan.DifferenceToNearestPlayer?.Y;
                _nearestEnemy = sx.HasValue && sy.HasValue ? (sx.Value, sy.Value) : null;
                if (_nearestEnemy.HasValue)
                {
                    AddHeat(_x + _nearestEnemy.Value.X, _y + _nearestEnemy.Value.Y, 5.5);
                }
            }
            catch (Exception ex)
            {
                AppendLog($"Scan failed: {ex.Message}");
            }
        }

        if (Ready(BotAction.Peek))
        {
            var dir = (Direction)(_peekDirectionIndex % 4);
            _peekDirectionIndex++;
            try
            {
                var peek = await _client.PeekAsync(_playerToken, (int)dir, ct);
                MarkUsed(BotAction.Peek);
                _lastPeek[dir] = peek;
                ApplyPeekHeat(dir, peek);
            }
            catch (Exception ex)
            {
                AppendLog($"Peek {dir} failed: {ex.Message}");
            }
        }
    }

    private BotDecision? BuildDecision()
    {
        var hpRatio = _maxHealth > 0.1 ? _currentHealth / _maxHealth : 1.0;

        var immediateDir = _lastPeek
            .Where(x => x.Value.Executed && x.Value.PlayersInSight > 0 && x.Value.SightedPlayerDistance == 1)
            .Select(x => (Direction?)x.Key)
            .FirstOrDefault();

        var closeThreats = _lastPeek.Values.Count(x => x.Executed && x.PlayersInSight > 0 && (x.SightedPlayerDistance ?? 99) <= 2);
        if (_nearestEnemy.HasValue && Math.Abs(_nearestEnemy.Value.X) + Math.Abs(_nearestEnemy.Value.Y) <= 2)
        {
            closeThreats++;
        }

        var underPressure = hpRatio < 0.58 || _recentDamageTicks > 0 || closeThreats >= 2 || _survivalTicks > 0;
        _lastUnderPressure = underPressure;

        if (Ready(BotAction.Special) && closeThreats >= 2)
        {
            return new BotDecision(
                "specialattack",
                "Multiple enemies close; AoE yields best kill rate.",
                async ct =>
                {
                    var response = await _client.SpecialattackAsync(_playerToken, ct);
                    MarkUsed(BotAction.Special);
                    return response.Executed;
                });
        }

        if (immediateDir.HasValue && !underPressure && Ready(BotAction.Hit))
        {
            var dir = immediateDir.Value;
            return new BotDecision(
                "hit",
                $"Adjacent enemy at {dir}; highest DPS action.",
                async ct =>
                {
                    var response = await _client.HitAsync(_playerToken, (int)dir, ct);
                    MarkUsed(BotAction.Hit);
                    return response.Executed;
                });
        }

        if (immediateDir.HasValue && Ready(BotAction.Move))
        {
            var retreatDirection = Opposite(immediateDir.Value);

            if (Ready(BotAction.Dash) && (hpRatio < 0.40 || _survivalTicks > 0))
            {
                return new BotDecision(
                    "dash-retreat",
                    $"High pressure escape via dash -> {retreatDirection}.",
                    async ct =>
                    {
                        var response = await _client.DashAsync(_playerToken, (int)retreatDirection, ct);
                        MarkUsed(BotAction.Dash);
                        if (response.Executed)
                        {
                            ApplyMovement(retreatDirection, Math.Max(response.BlocksDashed, 1));
                        }

                        return response.Executed;
                    });
            }

            return new BotDecision(
                "move-retreat",
                $"Adjacent enemy and pressure high; kite to {retreatDirection}.",
                async ct =>
                {
                    var response = await _client.MoveAsync(_playerToken, (int)retreatDirection, ct);
                    MarkUsed(BotAction.Move);
                    var moved = response.Executed && response.Move == true;
                    RegisterMoveResult(retreatDirection, moved);
                    if (moved)
                    {
                        ApplyMovement(retreatDirection, 1);
                    }

                    return response.Executed;
                });
        }

        if (immediateDir.HasValue && Ready(BotAction.Hit))
        {
            var dir = immediateDir.Value;
            return new BotDecision(
                "hit-last-stand",
                $"Adjacent enemy at {dir}; strike while move cooldown is active.",
                async ct =>
                {
                    var response = await _client.HitAsync(_playerToken, (int)dir, ct);
                    MarkUsed(BotAction.Hit);
                    return response.Executed;
                });
        }

        var bestSight = _lastPeek
            .Where(x => x.Value.Executed && x.Value.PlayersInSight > 0)
            .OrderBy(x => x.Value.SightedPlayerDistance ?? int.MaxValue)
            .FirstOrDefault();

        if (bestSight.Value is not null && Ready(BotAction.Shoot))
        {
            var dir = bestSight.Key;
            var dist = bestSight.Value.SightedPlayerDistance ?? 99;
            if (!underPressure || dist >= 2)
            {
                return new BotDecision(
                    "shoot",
                    $"Enemy in line of sight to {dir}; ranged hit before moving.",
                    async ct =>
                    {
                        var response = await _client.ShootAsync(_playerToken, (int)dir, ct);
                        MarkUsed(BotAction.Shoot);
                        return response.Executed;
                    });
            }
        }

        var moveDirection = GetBestMoveDirection(chase: !underPressure);
        if (Ready(BotAction.Move))
        {
            var reason = underPressure
                ? $"Pressure high; reposition toward safer lane -> {moveDirection}."
                : $"Controlled hunt path -> {moveDirection}.";

            return new BotDecision(
                "move",
                reason,
                async ct =>
                {
                    var response = await _client.MoveAsync(_playerToken, (int)moveDirection, ct);
                    MarkUsed(BotAction.Move);
                    var moved = response.Executed && response.Move == true;
                    RegisterMoveResult(moveDirection, moved);
                    if (moved)
                    {
                        ApplyMovement(moveDirection, 1);
                    }

                    return response.Executed;
                });
        }

        return null;
    }

    private Direction GetBestMoveDirection(bool chase)
    {
        var scored = new Dictionary<Direction, double>
        {
            [Direction.North] = RadarScore(Direction.North),
            [Direction.East] = RadarScore(Direction.East),
            [Direction.South] = RadarScore(Direction.South),
            [Direction.West] = RadarScore(Direction.West),
        };

        foreach (var dir in scored.Keys.ToArray())
        {
            var score = 0.0;
            score += chase ? scored[dir] * 1.35 : -scored[dir] * 1.0;

            if (_lastPeek.TryGetValue(dir, out var peek) && peek.Executed)
            {
                if (peek.PlayersInSight > 0)
                {
                    var dist = Math.Max(1, peek.SightedPlayerDistance ?? 6);
                    score += chase
                        ? 7.0 / dist + peek.PlayersInSight * 0.8
                        : -10.0 / dist - peek.PlayersInSight * 0.7;
                }
                else if (!chase)
                {
                    score += 0.9;
                }
            }

            if (_nearestEnemy.HasValue)
            {
                var targetDir = DirectionFromVector(_nearestEnemy.Value.X, _nearestEnemy.Value.Y);
                var awayDir = Opposite(targetDir);
                if (chase && dir == targetDir)
                {
                    score += 4.0;
                }
                else if (!chase && dir == awayDir)
                {
                    score += 4.5;
                }
                else if (!chase && dir == targetDir)
                {
                    score -= 3.5;
                }
            }

            if (_survivalTicks > 0 && _nearestEnemy.HasValue)
            {
                var safest = Opposite(DirectionFromVector(_nearestEnemy.Value.X, _nearestEnemy.Value.Y));
                if (dir == safest)
                {
                    score += 2.8;
                }
            }

            if (_blockedDirectionTicks.TryGetValue(dir, out var blockedTicks) && blockedTicks > 0)
            {
                score -= 5.0 + blockedTicks * 0.4;
            }

            if (dir == Opposite(_lastMoveDirection))
            {
                score -= 0.6;
            }

            score += _survivalTicks > 0 ? _random.NextDouble() * 0.2 : _random.NextDouble() * 0.7;
            scored[dir] = score;
        }

        return scored.OrderByDescending(x => x.Value).First().Key;
    }

    private void ApplyRadarHeat()
    {
        var north = RadarScore(Direction.North);
        var east = RadarScore(Direction.East);
        var south = RadarScore(Direction.South);
        var west = RadarScore(Direction.West);

        ApplyDirectionalHeat(Direction.North, north, 0.35);
        ApplyDirectionalHeat(Direction.East, east, 0.35);
        ApplyDirectionalHeat(Direction.South, south, 0.35);
        ApplyDirectionalHeat(Direction.West, west, 0.35);
    }

    private void ApplyPeekHeat(Direction dir, PeekEntitiesAsyncResponse peek)
    {
        if (!peek.Executed || peek.PlayersInSight <= 0)
        {
            return;
        }

        var (dx, dy) = Delta(dir);
        var sightDistance = peek.SightedPlayerDistance ?? 8;
        var maxTrace = Math.Clamp(sightDistance, 1, 10);

        for (var i = 1; i <= maxTrace; i++)
        {
            var certainty = i == sightDistance ? 5.0 : 0.6;
            AddHeat(_x + dx * i, _y + dy * i, certainty + peek.PlayersInSight * 0.3);
        }
    }

    private void ApplyDirectionalHeat(Direction dir, int count, double factor)
    {
        if (count <= 0)
        {
            return;
        }

        var (dx, dy) = Delta(dir);
        for (var i = 1; i <= 8; i++)
        {
            AddHeat(_x + dx * i, _y + dy * i, count * factor * (9 - i));
        }
    }

    private void DecayHeat()
    {
        if (_enemyHeat.Count == 0)
        {
            return;
        }

        var keys = _enemyHeat.Keys.ToArray();
        foreach (var key in keys)
        {
            _enemyHeat[key] *= 0.92;
            if (_enemyHeat[key] < 0.2)
            {
                _enemyHeat.Remove(key);
            }
        }
    }

    private void ApplyMovement(Direction direction, int steps)
    {
        var (dx, dy) = Delta(direction);
        _x += dx * steps;
        _y += dy * steps;
        AddHeat(_x, _y, -2.5);
    }

    private void AddHeat(int worldX, int worldY, double value)
    {
        var key = (worldX, worldY);
        _enemyHeat.TryGetValue(key, out var current);
        _enemyHeat[key] = Math.Max(0.0, current + value);
    }

    private int RadarScore(Direction direction)
    {
        var keys = direction switch
        {
            Direction.North => new[] { "north", "n", "up", "0" },
            Direction.East => new[] { "east", "e", "right", "1" },
            Direction.South => new[] { "south", "s", "down", "2" },
            Direction.West => new[] { "west", "w", "left", "3" },
            _ => Array.Empty<string>(),
        };

        var score = 0;
        foreach (var key in keys)
        {
            if (_lastRadar.TryGetValue(key, out var value))
            {
                score = Math.Max(score, value);
            }
        }

        return score;
    }

    private static Direction DirectionFromVector(int x, int y)
    {
        if (Math.Abs(x) >= Math.Abs(y))
        {
            return x >= 0 ? Direction.East : Direction.West;
        }

        return y >= 0 ? Direction.South : Direction.North;
    }

    private static (int dx, int dy) Delta(Direction direction)
    {
        return direction switch
        {
            Direction.North => (0, -1),
            Direction.East => (1, 0),
            Direction.South => (0, 1),
            Direction.West => (-1, 0),
            _ => (0, 0),
        };
    }

    private bool Ready(BotAction action)
    {
        if (!_lastUse.TryGetValue(action, out var time))
        {
            return true;
        }

        return DateTimeOffset.UtcNow - time >= Cooldowns[action];
    }

    private void MarkUsed(BotAction action)
    {
        _lastUse[action] = DateTimeOffset.UtcNow;
    }

    private void ResetKnowledgeState()
    {
        _x = 0;
        _y = 0;
        _kills = 0;
        _deaths = 0;
        _currentHealth = 0;
        _maxHealth = 10;
        _progress = 0;
        _remainingTime = 0;
        _peekDirectionIndex = 0;
        _gameToken = null;
        _nearestEnemy = null;
        _recentDamageTicks = 0;
        _survivalTicks = 0;
        _lastUnderPressure = false;
        _lastMoveDirection = Direction.North;

        _enemyHeat.Clear();
        _lastRadar.Clear();
        _lastPeek.Clear();
        _lastUse.Clear();
        _blockedDirectionTicks.Clear();
        _recentDeaths.Clear();
        _logEntries.Clear();

        RenderKnowledgeGrid();
    }

    private void RenderTelemetry(string decisionReason)
    {
        Dispatcher.UIThread.Post(() =>
        {
            var hpPercent = _maxHealth <= 0.01 ? 0 : (_currentHealth / _maxHealth) * 100.0;
            var kdr = (_deaths == 0 ? _kills : (double)_kills / _deaths).ToString("0.00", CultureInfo.InvariantCulture);

            StatsText.Text =
                $"Level: {_levelName} | Kills: {_kills} | Deaths: {_deaths} | K/D: {kdr} | " +
                $"HP: {_currentHealth.ToString("0.0", CultureInfo.InvariantCulture)}/{_maxHealth.ToString("0.0", CultureInfo.InvariantCulture)} ({hpPercent.ToString("0", CultureInfo.InvariantCulture)}%) | " +
                $"Progress: {_progress.ToString("0.0", CultureInfo.InvariantCulture)}% | Remaining: {_remainingTime.ToString("0.00", CultureInfo.InvariantCulture)} min | " +
                $"Pos (estimated): ({_x}, {_y}) | SurvivalMode: {(_survivalTicks > 0 ? "ON" : "OFF")}";

            var nearest = _nearestEnemy.HasValue ? $"({_nearestEnemy.Value.X}, {_nearestEnemy.Value.Y})" : "none";
            var radar = _lastRadar.Count == 0
                ? "none"
                : string.Join(", ", _lastRadar.OrderBy(x => x.Key).Select(x => $"{x.Key}:{x.Value}"));

            DecisionText.Text =
                $"Reasoning: {decisionReason}\n" +
                $"Nearest from scan (relative): {nearest}\n" +
                $"Radar: {radar}";

            CooldownText.Text = string.Join(
                Environment.NewLine,
                Cooldowns
                    .OrderBy(x => x.Key.ToString())
                    .Select(x => $"{x.Key,-8} {RemainingText(x.Key)}"));
        });
    }

    private string RemainingText(BotAction action)
    {
        if (!_lastUse.TryGetValue(action, out var last))
        {
            return "ready";
        }

        var remaining = Cooldowns[action] - (DateTimeOffset.UtcNow - last);
        if (remaining <= TimeSpan.Zero)
        {
            return "ready";
        }

        return $"{remaining.TotalMilliseconds.ToString("0", CultureInfo.InvariantCulture)} ms";
    }

    private void SetStatus(string text)
    {
        Dispatcher.UIThread.Post(() => StatusText.Text = text);
    }

    private void AppendLog(string message)
    {
        Dispatcher.UIThread.Post(() =>
        {
            var stamp = DateTime.Now.ToString("HH:mm:ss", CultureInfo.InvariantCulture);
            _logEntries.Insert(0, $"[{stamp}] {message}");
            while (_logEntries.Count > 250)
            {
                _logEntries.RemoveAt(_logEntries.Count - 1);
            }
        });
    }

    private void BuildKnowledgeGrid()
    {
        for (var row = 0; row < _mapCells.GetLength(0); row++)
        {
            for (var col = 0; col < _mapCells.GetLength(1); col++)
            {
                var block = new TextBlock
                {
                    Text = " ",
                    Width = 18,
                    Height = 18,
                    TextAlignment = TextAlignment.Center,
                    VerticalAlignment = VerticalAlignment.Center,
                    HorizontalAlignment = HorizontalAlignment.Center,
                    FontSize = 11,
                    FontWeight = FontWeight.SemiBold
                };

                _mapCells[row, col] = block;
                KnowledgeGrid.Children.Add(block);
            }
        }
    }

    private void RenderKnowledgeGrid()
    {
        Dispatcher.UIThread.Post(() =>
        {
            for (var row = 0; row < _mapCells.GetLength(0); row++)
            {
                for (var col = 0; col < _mapCells.GetLength(1); col++)
                {
                    var worldX = _x + (col - MapRadius);
                    var worldY = _y + (row - MapRadius);
                    var cell = _mapCells[row, col];

                    var symbol = " ";
                    var foreground = Brushes.Gray;

                    if (worldX == _x && worldY == _y)
                    {
                        symbol = "P";
                        foreground = Brushes.DodgerBlue;
                    }
                    else if (_nearestEnemy.HasValue
                             && worldX == _x + _nearestEnemy.Value.X
                             && worldY == _y + _nearestEnemy.Value.Y)
                    {
                        symbol = "N";
                        foreground = Brushes.OrangeRed;
                    }
                    else if (_enemyHeat.TryGetValue((worldX, worldY), out var heat))
                    {
                        if (heat >= 5)
                        {
                            symbol = "*";
                            foreground = Brushes.OrangeRed;
                        }
                        else if (heat >= 2)
                        {
                            symbol = "+";
                            foreground = Brushes.Gold;
                        }
                        else
                        {
                            symbol = ".";
                            foreground = Brushes.LightGray;
                        }
                    }

                    cell.Text = symbol;
                    cell.Foreground = foreground;
                }
            }
        });
    }

    private readonly record struct BotDecision(
        string Label,
        string Reason,
        Func<CancellationToken, Task<bool>> Execute);

    private enum Direction
    {
        North = 0,
        East = 1,
        South = 2,
        West = 3,
    }

    private enum BotAction
    {
        Move,
        Hit,
        Radar,
        Shoot,
        Peek,
        Scan,
        Dash,
        Special,
        Teleport,
    }

    private static Direction Opposite(Direction direction)
    {
        return direction switch
        {
            Direction.North => Direction.South,
            Direction.East => Direction.West,
            Direction.South => Direction.North,
            Direction.West => Direction.East,
            _ => Direction.North,
        };
    }

    private void RegisterMoveResult(Direction direction, bool moved)
    {
        _lastMoveDirection = direction;

        if (moved)
        {
            _blockedDirectionTicks.Remove(direction);
            return;
        }

        _blockedDirectionTicks.TryGetValue(direction, out var current);
        _blockedDirectionTicks[direction] = Math.Min(current + 4, 20);
    }

    private void DecayBlockedDirections()
    {
        foreach (var key in _blockedDirectionTicks.Keys.ToArray())
        {
            _blockedDirectionTicks[key]--;
            if (_blockedDirectionTicks[key] <= 0)
            {
                _blockedDirectionTicks.Remove(key);
            }
        }
    }
}