using System;
using System.Numerics;
using Dalamud.Game.ClientState.Objects.Enums;
using Dalamud.Game.ClientState.Objects.SubKinds;
using Dalamud.Game.ClientState.Objects.Types;
using Dalamud.Plugin.Services;
using Microsoft.Extensions.Logging;
using Questionable.Functions;
using Questionable.Model;

namespace Questionable.Controller.Steps.Movement;

internal sealed class MoveToObjectExecutor(MovementController movementController, GameFunctions gameFunctions, IClientState clientState, IObjectTable objectTable, ILogger<MoveToObjectExecutor> logger) : TaskExecutor<MoveToObject>()
{
	private long? _startedLookingAt;

	private Vector3 _destination;

	private bool _moving;

	protected override bool Start()
	{
		if (!base.Task.Step.DataId.HasValue)
		{
			logger.LogWarning("MoveToObject task has no DataId");
			return false;
		}
		if (clientState.TerritoryType != base.Task.Step.TerritoryId)
		{
			logger.LogDebug("Not in correct territory yet, waiting");
			return true;
		}
		_startedLookingAt = Environment.TickCount64;
		return TryStartMovement();
	}

	private IGameObject? FindDistantObjectByDataId(uint dataId)
	{
		IPlayerCharacter localPlayer = objectTable.LocalPlayer;
		if (localPlayer == null)
		{
			return null;
		}
		float num = base.Task.Step.CalculateActualStopDistance();
		IGameObject result = null;
		float num2 = float.MaxValue;
		foreach (IGameObject item in objectTable)
		{
			ObjectKind objectKind = item.ObjectKind;
			bool flag = ((objectKind == ObjectKind.Pc || objectKind - 8 <= ObjectKind.BattleNpc || objectKind == ObjectKind.HousingEventObject) ? true : false);
			if (!flag && item.BaseId == dataId)
			{
				float num3 = Vector3.Distance(localPlayer.Position, item.Position);
				if (!(num3 <= num) && num3 < num2)
				{
					result = item;
					num2 = num3;
				}
			}
		}
		return result;
	}

	private bool TryStartMovement()
	{
		IGameObject gameObject = FindDistantObjectByDataId(base.Task.Step.DataId.Value);
		if (gameObject == null)
		{
			gameObject = gameFunctions.FindObjectByDataId(base.Task.Step.DataId.Value, null, warnIfMissing: false);
			if (gameObject == null)
			{
				logger.LogDebug("Object {DataId} not found yet, waiting", base.Task.Step.DataId);
				return true;
			}
			IPlayerCharacter localPlayer = objectTable.LocalPlayer;
			float num = base.Task.Step.CalculateActualStopDistance();
			if (localPlayer != null && Vector3.Distance(localPlayer.Position, gameObject.Position) <= num)
			{
				logger.LogDebug("Only nearby objects with DataId {DataId} remain, skipping", base.Task.Step.DataId);
				return true;
			}
		}
		_destination = gameObject.Position;
		logger.LogDebug("Moving to object {DataId} at {Position}", base.Task.Step.DataId, _destination);
		movementController.NavigateTo(EMovementType.Quest, base.Task.Step.DataId, _destination, fly: false, base.Task.Step.Sprint ?? true, base.Task.Step.CalculateActualStopDistance());
		_moving = true;
		return true;
	}

	public override ETaskResult Update()
	{
		if (clientState.TerritoryType != base.Task.Step.TerritoryId)
		{
			return ETaskResult.StillRunning;
		}
		if (!_moving)
		{
			long? startedLookingAt = _startedLookingAt;
			if (startedLookingAt.HasValue)
			{
				long valueOrDefault = startedLookingAt.GetValueOrDefault();
				if (Environment.TickCount64 > valueOrDefault + 3000)
				{
					logger.LogDebug("Object {DataId} not found after timeout, skipping step", base.Task.Step.DataId);
					return ETaskResult.TaskComplete;
				}
			}
			if (!TryStartMovement())
			{
				return ETaskResult.TaskComplete;
			}
			if (!_moving)
			{
				return ETaskResult.StillRunning;
			}
		}
		if (movementController.IsPathfinding || movementController.IsPathRunning)
		{
			return ETaskResult.StillRunning;
		}
		if (!movementController.HasBeenMovingForAtLeast(2000))
		{
			return ETaskResult.StillRunning;
		}
		return ETaskResult.TaskComplete;
	}

	public override bool ShouldInterruptOnDamage()
	{
		return false;
	}
}