using CounterStrikeSharp.API;
using CounterStrikeSharp.API.Core;
using CounterStrikeSharp.API.Modules.Utils;
using Cs2SuperPowers.Players;
using Cs2SuperPowers.Players.PlayerValidations;

namespace Cs2SuperPowers.Powers;

public class DroppedNades(IPlayerHud playerHud) : BasePower(playerHud)
{
    private readonly Dictionary<CCSPlayerController, DateTime> _lastUse = new();

    public override int Id => 34;
    public override string Name => "Dropped Nades";
    public override string Description => "MAG-7 shots drop 5 grenades on the ground. This power is force-only.";
    public override char ChatColor => ChatColors.DarkRed;
    public override string HtmlColor => "#AA0000";
    public override bool CanBeRandomlyAssigned => false;

    protected override void OnInitialize()
    {
        RegisterEventHandler<EventRoundStart>(OnRoundStart);
        RegisterEventHandler<EventWeaponFire>(OnWeaponFire);
    }

    private HookResult OnRoundStart(EventRoundStart @event, GameEventInfo info)
    {
        _lastUse.Clear();
        return HookResult.Continue;
    }

    private HookResult OnWeaponFire(EventWeaponFire @event, GameEventInfo info)
    {
        var controller = @event.Userid;
        if (!Ensure.Player(controller).IsValid().Check() || !IsAssignedTo(controller!))
        {
            return HookResult.Continue;
        }

        var pawn = controller!.PlayerPawn.Value;
        var weapon = pawn?.WeaponServices?.ActiveWeapon.Value;
        if (pawn == null || !pawn.IsValid || weapon == null || weapon.DesignerName != "weapon_mag7")
        {
            return HookResult.Continue;
        }

        var now = DateTime.UtcNow;
        if (!GlobalConfig.NoDelayEnabled &&
            _lastUse.TryGetValue(controller, out var lastUseTime) &&
            (now - lastUseTime).TotalSeconds < 0.35)
        {
            return HookResult.Continue;
        }

        _lastUse[controller] = now;

        var origin = pawn.AbsOrigin;
        if (origin == null)
        {
            return HookResult.Continue;
        }

        int grenadeCount = GlobalConfig.GetDroppedNadesCount(5);
        var random = new Random();
        var viewAngle = pawn.V_angle;
        float baseYawRad = viewAngle.Y * MathF.PI / 180f;
        var forward = new Vector(MathF.Cos(baseYawRad), MathF.Sin(baseYawRad), 0.0f);
        var right = new Vector(-forward.Y, forward.X, 0.0f);

        int droppedGrenades = 0;
        int attempts = 0;
        int maxAttempts = grenadeCount + 8;

        while (droppedGrenades < grenadeCount && attempts < maxAttempts)
        {
            int i = attempts;
            attempts++;
            float lateralOffset = (float)(random.NextDouble() * 18.0 - 9.0);
            float forwardOffset = (float)(random.NextDouble() * 12.0 + 16.0);
            var spawnPos = new Vector(
                origin.X + forward.X * forwardOffset + right.X * lateralOffset,
                origin.Y + forward.Y * forwardOffset + right.Y * lateralOffset,
                origin.Z + 10.0f
            );

            float yaw = viewAngle.Y + (float)(random.NextDouble() * 16.0 - 8.0);
            var angle = new QAngle(8.0f, yaw, 0.0f);
            var velocity = new Vector(
                forward.X * (float)(random.NextDouble() * 40.0 + 45.0) + right.X * (float)(random.NextDouble() * 16.0 - 8.0),
                forward.Y * (float)(random.NextDouble() * 40.0 + 45.0) + right.Y * (float)(random.NextDouble() * 16.0 - 8.0),
                (float)(random.NextDouble() * 12.0 + 8.0)
            );

            var grenadeWeapon = controller.GiveNamedItem<CHEGrenade>("weapon_hegrenade");
            if (grenadeWeapon == null || !grenadeWeapon.IsValid)
            {
                continue;
            }

            if (grenadeWeapon.IsHeldByPlayer)
            {
                continue;
            }

            grenadeWeapon.Teleport(spawnPos, angle, velocity);
            droppedGrenades++;
        }
        return HookResult.Continue;
    }
}