using CounterStrikeSharp.API;
using CounterStrikeSharp.API.Core;
using CounterStrikeSharp.API.Core.Attributes;
using CounterStrikeSharp.API.Modules.Utils;
using Cs2SuperPowers.Players;
using Cs2SuperPowers.Players.PlayerValidations;
using Microsoft.Extensions.Logging;

namespace Cs2SuperPowers.Powers;

public class BlindingLight(IPlayerHud playerHud) : BasePower(playerHud)
{
    public override int Id => 22;
    public override string Name => "Blinding Light";
    
    public override string Description => $"Inflict a blinding flash of light that disorients enemies. Press E (Use) to activate the power.";
    
    public override char ChatColor => ChatColors.BlueGrey;

    public override string HtmlColor => "#cdcece";

    private readonly List<BlindingLightInfo> _registrations = new();

    private const int SecondsBetweenActivations = 8;
    
    public override void AssignToPlayer(CCSPlayerController player, bool showMessages)
    {
        base.AssignToPlayer(player, showMessages);
        if (!_registrations.Any(r => r.Player == player))
        {
            _registrations.Add(new BlindingLightInfo(player, DateTime.MinValue));
        }
        Plugin!.Logger.LogInformation("BlindingLight assigned to {PlayerName} ({SteamID})", player.PlayerName, player.SteamID);
    }

    public override void UnassignFromPlayer(CCSPlayerController player)
    {
        base.UnassignFromPlayer(player);
        var registration = _registrations.FirstOrDefault(r => r.Player == player);
        if (registration != null)
        {
            _registrations.Remove(registration);
        }
        Plugin!.Logger.LogInformation("BlindingLight unassigned from {PlayerName} ({SteamID})", player.PlayerName, player.SteamID);
    }
    
    protected override void OnInitialize()
    {
        RegisterListener<Listeners.OnTick>(OnTick);
        RegisterEventHandler<EventRoundStart>(OnRoundStart);
        RegisterEventHandler<EventPlayerDeath>(OnPlayerDeath);
        Plugin!.Logger.LogInformation("BlindingLight initialized!");
    }

    private HookResult OnPlayerDeath(EventPlayerDeath @event, GameEventInfo info)
    {
        var player = @event.Userid;
        var registration = _registrations
            .FirstOrDefault(r => r.Player == player);
        if (registration != null)
        {
            registration.WasUsePressedLastTick = false;
        }
        return HookResult.Continue;
    }

    private HookResult OnRoundStart(EventRoundStart @event, GameEventInfo info)
    {
        _registrations.Clear();
        foreach (var player in PlayerPowers.Instance.GetPlayersWithPower(this))
        {
            _registrations.Add(new BlindingLightInfo(player, DateTime.MinValue));
        }
        Plugin!.Logger.LogInformation("BlindingLight: Round start, registered {Count} players", _registrations.Count);
        return HookResult.Continue;
    }

    private void OnTick()
    {
        foreach (var registration in _registrations.ToList())
        {
            if (!Ensure.Player(registration.Player).IsValid().Check())
            {
                _registrations.Remove(registration);
                continue;
            }
            
            var usePressed = registration.Player.Buttons.HasFlag(PlayerButtons.Use);
            var canUsePower = (DateTime.UtcNow - registration.LastUse).TotalSeconds > SecondsBetweenActivations;
            
            if (usePressed && !registration.WasUsePressedLastTick)
            {
                Plugin!.Logger.LogInformation("BlindingLight: {PlayerName} pressed use! CanUse: {CanUse}", registration.Player.PlayerName, canUsePower);
                if (canUsePower)
                {
                    ActivatePower(registration);
                }
                else
                {
                    var secondsBeforeNextUse =
                        SecondsBetweenActivations - (int)(DateTime.UtcNow - registration.LastUse).TotalSeconds;
                    registration.Player
                        .PrintToCenterAlert($"You need to wait {ChatColors.DarkRed}{secondsBeforeNextUse} {ChatColors.Default}seconds before using the power.");
                }
            }
            
            registration.WasUsePressedLastTick = usePressed;
        }
    }

    private void ActivatePower(BlindingLightInfo registration)
    {
        // Check for at least 1 player in the opposing team
        var playerTeam = registration.Player.Team;
        var enemyCount = Utilities.GetPlayers().Count(p => 
            p.IsValid && p.Team != CsTeam.None && p.Team != CsTeam.Spectator && p.Team != playerTeam);
        Plugin!.Logger.LogInformation("BlindingLight: Activating for {PlayerName}, enemy count: {EnemyCount}", registration.Player.PlayerName, enemyCount);
        
        if (enemyCount < 1)
        {
            return;
        }
        
        var flashProjectile = Utilities.CreateEntityByName<CFlashbangProjectile>("flashbang_projectile");
        if (flashProjectile == null || !flashProjectile.IsValid)
        {
            Plugin!.Logger.LogError("BlindingLight: Failed to create flashbang projectile!");
            return;
        }

        var player = registration.Player;
        var pos = player.PlayerPawn.Value!.AbsOrigin;
        pos!.Z += 10;

        flashProjectile.TicksAtZeroVelocity = 100;
        flashProjectile.TeamNum = player.TeamNum;
        flashProjectile.Teleport(pos, null, new Vector(0, 0, -10));
        flashProjectile.DispatchSpawn();
        flashProjectile.AcceptInput("InitializeSpawnFromWorld", player.PlayerPawn.Value, player.PlayerPawn.Value);
        flashProjectile.DetonateTime = 0;
        
        Plugin!.Logger.LogInformation("BlindingLight: Flashbang created and detonated!");
        registration.UpdateUse();
    }
}

public record BlindingLightInfo(CCSPlayerController Player, DateTime LastUse)
{
    public DateTime LastUse { get; private set; } = LastUse;
    public bool WasUsePressedLastTick { get; set; } = false;
    
    public void UpdateUse()
    {
        LastUse = DateTime.UtcNow;
    }
}