using System;
using System.Numerics;
using Dalamud.Game.ClientState.Conditions;
using Dalamud.Game.ClientState.Objects.SubKinds;
using Dalamud.Game.ClientState.Objects.Types;
using Dalamud.Plugin.Services;
using Microsoft.Extensions.Logging;
using Questionable.Controller.GameUi;
using Questionable.Functions;
using SmartNav;

namespace Questionable.Controller.Steps.Shared;

internal static class WarpInteract
{
	internal sealed record Task(uint NpcDataId, uint WarpRowId, ushort SourceTerritoryId, ushort DestTerritoryId) : ITask
	{
		public bool ShouldRedoOnInterrupt()
		{
			return true;
		}

		public override string ToString()
		{
			return $"WarpInteract({NpcDataId}, warp={WarpRowId}, {SourceTerritoryId}->{DestTerritoryId})";
		}
	}

	internal sealed class DoWarpInteract(GameFunctions gameFunctions, InteractionUiController interactionUiController, ICondition condition, IClientState clientState, IObjectTable objectTable, WarpFailureTracker warpFailureTracker, ILogger<DoWarpInteract> logger) : TaskExecutor<Task>(), IConditionChangeAware, ITaskExecutor, IStoppableTaskExecutor
	{
		private enum EWarpPhase
		{
			None,
			Unmounting,
			Interacting,
			WaitingForSettle
		}

		private EWarpPhase _phase;

		private Vector3 _startPosition;

		private long _interactingStartedAt;

		private long _settleAt;

		private bool _abortToReroute;

		protected override bool Start()
		{
			_phase = EWarpPhase.None;
			_abortToReroute = false;
			_startPosition = objectTable.LocalPlayer?.Position ?? Vector3.Zero;
			warpFailureTracker.RecordAttempt(base.Task.WarpRowId);
			if (warpFailureTracker.IsBlacklisted(base.Task.WarpRowId))
			{
				logger.LogWarning("WarpInteract: warp {WarpRowId} blacklisted after repeated failures, retrying step to re-route", base.Task.WarpRowId);
				_abortToReroute = true;
				return true;
			}
			interactionUiController.SmartNavWarpRowId = base.Task.WarpRowId;
			interactionUiController.SmartNavDestTerritoryId = base.Task.DestTerritoryId;
			IGameObject gameObject = gameFunctions.FindObjectByDataId(base.Task.NpcDataId);
			if (gameObject == null)
			{
				logger.LogDebug("WarpInteract: NPC with DataId {DataId} not found yet, waiting", base.Task.NpcDataId);
				return true;
			}
			if (condition[ConditionFlag.Mounted])
			{
				logger.LogDebug("WarpInteract: Unmounting before warp interaction");
				gameFunctions.Unmount();
				_phase = EWarpPhase.Unmounting;
				return true;
			}
			if (gameFunctions.InteractWith(gameObject))
			{
				logger.LogDebug("WarpInteract: Interacting with NPC {DataId}", base.Task.NpcDataId);
				_phase = EWarpPhase.Interacting;
				_interactingStartedAt = Environment.TickCount64;
			}
			return true;
		}

		public override ETaskResult Update()
		{
			if (_abortToReroute)
			{
				ClearContext();
				return ETaskResult.RetryStep;
			}
			switch (_phase)
			{
			case EWarpPhase.Unmounting:
			{
				if (condition[ConditionFlag.Mounted])
				{
					return ETaskResult.StillRunning;
				}
				IGameObject gameObject2 = gameFunctions.FindObjectByDataId(base.Task.NpcDataId);
				if (gameObject2 == null)
				{
					logger.LogDebug("WarpInteract: NPC not found after unmount, waiting");
					_phase = EWarpPhase.None;
					return ETaskResult.StillRunning;
				}
				if (gameFunctions.InteractWith(gameObject2))
				{
					logger.LogDebug("WarpInteract: Interacting with NPC {DataId} after unmount", base.Task.NpcDataId);
					_phase = EWarpPhase.Interacting;
					_interactingStartedAt = Environment.TickCount64;
				}
				return ETaskResult.StillRunning;
			}
			case EWarpPhase.Interacting:
			{
				if (clientState.TerritoryType != base.Task.SourceTerritoryId)
				{
					logger.LogDebug("WarpInteract: Territory changed to {Territory}, warp successful", clientState.TerritoryType);
					warpFailureTracker.RecordSuccess(base.Task.WarpRowId);
					_phase = EWarpPhase.WaitingForSettle;
					_settleAt = Environment.TickCount64 + 500;
					return ETaskResult.StillRunning;
				}
				IPlayerCharacter localPlayer = objectTable.LocalPlayer;
				if (localPlayer != null && Vector3.Distance(localPlayer.Position, _startPosition) > 2f)
				{
					logger.LogDebug("WarpInteract: Position changed significantly, same-zone warp detected");
					warpFailureTracker.RecordSuccess(base.Task.WarpRowId);
					_phase = EWarpPhase.WaitingForSettle;
					_settleAt = Environment.TickCount64 + 500;
					return ETaskResult.StillRunning;
				}
				if (Environment.TickCount64 - _interactingStartedAt > 30000)
				{
					logger.LogWarning("WarpInteract: Timed out waiting for warp transition, retrying step");
					ClearContext();
					return ETaskResult.RetryStep;
				}
				return ETaskResult.StillRunning;
			}
			case EWarpPhase.WaitingForSettle:
				if (Environment.TickCount64 >= _settleAt)
				{
					logger.LogDebug("WarpInteract: Warp complete");
					ClearContext();
					return ETaskResult.TaskComplete;
				}
				return ETaskResult.StillRunning;
			case EWarpPhase.None:
			{
				IGameObject gameObject = gameFunctions.FindObjectByDataId(base.Task.NpcDataId);
				if (gameObject == null)
				{
					return ETaskResult.StillRunning;
				}
				_startPosition = objectTable.LocalPlayer?.Position ?? _startPosition;
				if (condition[ConditionFlag.Mounted])
				{
					gameFunctions.Unmount();
					_phase = EWarpPhase.Unmounting;
					return ETaskResult.StillRunning;
				}
				if (gameFunctions.InteractWith(gameObject))
				{
					logger.LogDebug("WarpInteract: Interacting with NPC {DataId}", base.Task.NpcDataId);
					_phase = EWarpPhase.Interacting;
					_interactingStartedAt = Environment.TickCount64;
				}
				return ETaskResult.StillRunning;
			}
			default:
				return ETaskResult.StillRunning;
			}
		}

		public void OnConditionChange(ConditionFlag flag, bool value)
		{
			bool flag2 = _phase == EWarpPhase.Interacting;
			if (flag2)
			{
				bool flag3 = (uint)(flag - 31) <= 1u;
				flag2 = flag3;
			}
			if (flag2 && value)
			{
				logger.LogDebug("WarpInteract: Interaction confirmed via condition flag");
			}
		}

		public override bool ShouldInterruptOnDamage()
		{
			return true;
		}

		public void StopNow()
		{
			ClearContext();
		}

		private void ClearContext()
		{
			interactionUiController.SmartNavWarpRowId = null;
			interactionUiController.SmartNavDestTerritoryId = null;
		}
	}
}