using SilkroadBot.Plugins.SDK.Attributes;
using SilkroadBot.Plugins.SDK.Interfaces;
using SilkroadBot.Plugins.SDK.Models;
using SilkroadBot.Domain.Models;

namespace SilkroadBot.Plugin.Protection;

/// <summary>
/// Protection plugin - monitors character safety and takes protective actions.
/// Handles auto-healing, flee behavior, disconnect protection, and death recovery.
/// </summary>
[Plugin("protection", "Character Protection", "Auto-healing, flee behavior, and death recovery")]
public class ProtectionPlugin : PluginBase
{
    public override string Id => "protection";
    public override string Name => "Character Protection";
    public override Version Version => new(1, 0, 0);
    public override string Author => "SilkroadBot Team";
    public override string Description => "Automatic character protection: healing, fleeing, and recovery";

    private CancellationTokenSource? _monitorCts;
    
    // Configuration
    private double _healThreshold = 60.0;
    private double _mpPotThreshold = 30.0;
    private double _fleeThreshold = 15.0;
    private int _maxMonstersBeforeFlee = 5;
    private int _checkIntervalMs = 500;
    private bool _autoResurrect = true;
    private WorldPosition _safePosition;

    public override async Task InitializeAsync(IPluginContext context)
    {
        await base.InitializeAsync(context);
        await LoadConfigurationAsync();
    }

    public override Task StartAsync(CancellationToken ct = default)
    {
        _monitorCts = CancellationTokenSource.CreateLinkedTokenSource(ct);
        _ = Task.Run(() => ProtectionLoopAsync(_monitorCts.Token));
        return base.StartAsync(ct);
    }

    public override Task StopAsync()
    {
        _monitorCts?.Cancel();
        return base.StopAsync();
    }

    private async Task ProtectionLoopAsync(CancellationToken ct)
    {
        Log(LogLevel.Information, "Protection monitoring active");
        
        while (!ct.IsCancellationRequested)
        {
            try
            {
                var state = Context.GetGameState();
                await CheckProtectionRules(state);
                await Task.Delay(_checkIntervalMs, ct);
            }
            catch (OperationCanceledException) { break; }
            catch (Exception ex)
            {
                Log(LogLevel.Error, $"Protection check error: {ex.Message}");
                await Task.Delay(2000, ct);
            }
        }
    }

    private async Task CheckProtectionRules(GameStateSnapshot state)
    {
        // Rule 1: Death recovery
        if (state.IsDead)
        {
            await HandleDeath(state);
            return;
        }

        // Rule 2: Critical HP - Flee
        if (state.HPPercentage < _fleeThreshold && state.IsInCombat)
        {
            await HandleFlee(state);
            return;
        }

        // Rule 3: Low HP - Heal
        if (state.HPPercentage < _healThreshold)
        {
            await HandleHeal(state);
        }

        // Rule 4: Low MP - Potion
        if (state.MPPercentage < _mpPotThreshold)
        {
            await HandleMPRestore(state);
        }

        // Rule 5: Too many monsters
        if (state.NearbyEntityCount > _maxMonstersBeforeFlee && state.IsInCombat)
        {
            Log(LogLevel.Warning, $"Too many enemies nearby ({state.NearbyEntityCount}). Consider fleeing.");
        }
    }

    private async Task HandleDeath(GameStateSnapshot state)
    {
        Log(LogLevel.Warning, "Character is dead!");
        
        if (_autoResurrect)
        {
            Log(LogLevel.Information, "Attempting auto-resurrect...");
            // TODO: Send resurrect packet (nearest spawn point)
            await Task.Delay(3000);
        }
    }

    private async Task HandleFlee(GameStateSnapshot state)
    {
        Log(LogLevel.Warning, $"HP critically low ({state.HPPercentage:F1}%)! Fleeing to safety...");
        
        // Use navigation to flee to safe position
        var nav = Context.NavigationService;
        if (nav != null)
        {
            var path = await nav.FindPathAsync(state.Position, _safePosition);
            if (path.Count > 0)
            {
                Log(LogLevel.Information, $"Flee path found ({path.Count} waypoints)");
                // TODO: Execute movement along path
            }
        }
    }

    private async Task HandleHeal(GameStateSnapshot state)
    {
        Log(LogLevel.Debug, $"HP below threshold ({state.HPPercentage:F1}%). Using health potion...");
        // TODO: Send use HP potion packet
        await Task.CompletedTask;
    }

    private async Task HandleMPRestore(GameStateSnapshot state)
    {
        Log(LogLevel.Debug, $"MP below threshold ({state.MPPercentage:F1}%). Using MP potion...");
        // TODO: Send use MP potion packet
        await Task.CompletedTask;
    }

    private Task LoadConfigurationAsync()
    {
        _healThreshold = Context.Configuration.Get("healThreshold", 60.0);
        _mpPotThreshold = Context.Configuration.Get("mpPotThreshold", 30.0);
        _fleeThreshold = Context.Configuration.Get("fleeThreshold", 15.0);
        _maxMonstersBeforeFlee = Context.Configuration.Get("maxMonsters", 5);
        _checkIntervalMs = Context.Configuration.Get("checkIntervalMs", 500);
        _autoResurrect = Context.Configuration.Get("autoResurrect", true);
        return Task.CompletedTask;
    }
}