using System;
using System.Collections.Generic;
using Dalamud.Game.ClientState.Conditions;
using Dalamud.Plugin.Services;
using FFXIVClientStructs.FFXIV.Client.UI;
using FFXIVClientStructs.FFXIV.Component.GUI;
using LLib.GameUI;
using Lumina.Excel.Sheets;
using Microsoft.Extensions.Logging;
using Questionable.Controller.GameUi;
using SmartNav.Model;

namespace Questionable.Functions;

internal sealed class AethernetTeleportService : IDisposable
{
	public enum ETeleportState
	{
		Idle,
		WaitingForAddon,
		Complete,
		Failed
	}

	private static readonly TimeSpan AddonTimeout = TimeSpan.FromSeconds(15L);

	private const long FireRetryIntervalMs = 100L;

	private static readonly Dictionary<EAetheryteLocation, uint> FirmamentPlaceNameIds = new Dictionary<EAetheryteLocation, uint>
	{
		{
			EAetheryteLocation.FirmamentMendicantsCourt,
			3436u
		},
		{
			EAetheryteLocation.FirmamentMattock,
			3473u
		},
		{
			EAetheryteLocation.FirmamentNewNest,
			3475u
		},
		{
			EAetheryteLocation.FirmanentSaintRoellesDais,
			3474u
		},
		{
			EAetheryteLocation.FirmamentFeatherfall,
			3525u
		},
		{
			EAetheryteLocation.FirmamentHoarfrostHall,
			3528u
		},
		{
			EAetheryteLocation.FirmamentWesternRisensongQuarter,
			3646u
		},
		{
			EAetheryteLocation.FirmamentEasternRisensongQuarter,
			3645u
		}
	};

	private readonly IFramework _framework;

	private readonly IGameGui _gameGui;

	private readonly IDataManager _dataManager;

	private readonly ICondition _condition;

	private readonly InteractionUiController _interactionUiController;

	private readonly ILogger<AethernetTeleportService> _logger;

	private long _requestedAtMs;

	private bool _selectStringDismissed;

	private bool _fired;

	private bool _entriesLogged;

	private long _nextFireAtMs;

	public ETeleportState State { get; private set; }

	public EAetheryteLocation? PendingDestination { get; private set; }

	public AethernetTeleportService(IFramework framework, IGameGui gameGui, IDataManager dataManager, ICondition condition, InteractionUiController interactionUiController, ILogger<AethernetTeleportService> logger)
	{
		_framework = framework;
		_gameGui = gameGui;
		_dataManager = dataManager;
		_condition = condition;
		_interactionUiController = interactionUiController;
		_logger = logger;
		_framework.Update += OnFrameworkUpdate;
	}

	public void RequestTeleport(EAetheryteLocation destination)
	{
		if (State != ETeleportState.Idle)
		{
			Reset();
		}
		if (FirmamentPlaceNameIds.TryGetValue(destination, out var value))
		{
			string text = ResolvePlaceName(value);
			if (text != null)
			{
				RequestCustomZoneTeleport(destination, text);
				return;
			}
			_logger.LogWarning("Failed to resolve PlaceName {Id} for Firmament destination {Dest}", value, destination);
		}
		_logger.LogInformation("Requesting aethernet teleport to {Destination}", destination);
		PendingDestination = destination;
		_requestedAtMs = Environment.TickCount64;
		State = ETeleportState.WaitingForAddon;
	}

	public void RequestCustomZoneTeleport(EAetheryteLocation destination, string destinationName)
	{
		if (State != ETeleportState.Idle)
		{
			_logger.LogWarning("RequestCustomZoneTeleport called while in state {State}, resetting first", State);
			Reset();
		}
		_logger.LogInformation("Requesting custom zone aethernet teleport to {Destination} ({Name})", destination, destinationName);
		PendingDestination = destination;
		_interactionUiController.AethernetDestinationName = destinationName;
		State = ETeleportState.Complete;
	}

	public void Reset()
	{
		if (State != ETeleportState.Idle)
		{
			_logger.LogDebug("Resetting AethernetTeleportService from state {State}", State);
		}
		State = ETeleportState.Idle;
		PendingDestination = null;
		_requestedAtMs = 0L;
		_selectStringDismissed = false;
		_fired = false;
		_entriesLogged = false;
		_nextFireAtMs = 0L;
		ClearCustomZoneState();
	}

	private void ClearCustomZoneState()
	{
		_interactionUiController.AethernetDestinationName = null;
	}

	private string? ResolvePlaceName(uint placeNameId)
	{
		return _dataManager.GetExcelSheet<PlaceName>().GetRowOrDefault(placeNameId)?.Name.ToString();
	}

	private string? ResolveAethernetDisplayName(EAetheryteLocation aetheryte)
	{
		Aetheryte? rowOrDefault = _dataManager.GetExcelSheet<Aetheryte>().GetRowOrDefault((uint)aetheryte);
		if (!rowOrDefault.HasValue)
		{
			return null;
		}
		return rowOrDefault.Value.AethernetName.ValueNullable?.Name.ToString();
	}

	private unsafe void OnFrameworkUpdate(IFramework _)
	{
		if (State != ETeleportState.WaitingForAddon)
		{
			return;
		}
		AddonSelectString* addonPtr;
		AtkUnitBase* addonPtr2;
		if (_fired && (_condition[ConditionFlag.BetweenAreas] || _condition[ConditionFlag.BetweenAreas51]))
		{
			_logger.LogDebug("Aethernet teleport to {Destination} accepted (between areas)", PendingDestination);
			State = ETeleportState.Complete;
		}
		else if (Environment.TickCount64 - _requestedAtMs > (long)AddonTimeout.TotalMilliseconds)
		{
			_logger.LogWarning("Aethernet teleport request to {Destination} timed out after {Timeout}s", PendingDestination, AddonTimeout.TotalSeconds);
			State = ETeleportState.Failed;
		}
		else if (_gameGui.TryGetAddonByName<AddonSelectString>("SelectString", out addonPtr) && LAddon.IsAddonReady(&addonPtr->AtkUnitBase))
		{
			_logger.LogDebug("Dismissing aetheryte SelectString (selecting Aethernet)");
			addonPtr->AtkUnitBase.FireCallbackInt(0);
			_selectStringDismissed = true;
		}
		else if (_selectStringDismissed)
		{
			_selectStringDismissed = false;
		}
		else if (!_gameGui.TryGetAddonByName<AtkUnitBase>("TelepotTown", out addonPtr2))
		{
			if (_fired)
			{
				_logger.LogDebug("Aethernet teleport to {Destination} accepted (menu closed)", PendingDestination);
				State = ETeleportState.Complete;
			}
		}
		else
		{
			if (!LAddon.IsAddonReady(addonPtr2))
			{
				return;
			}
			string text = ResolveAethernetDisplayName(PendingDestination.Value);
			if (text == null)
			{
				_logger.LogWarning("Failed to resolve display name for {Destination}", PendingDestination);
				State = ETeleportState.Failed;
				return;
			}
			int num = -1;
			for (int i = 0; i < 20; i++)
			{
				int num2 = 262 + i;
				if (num2 >= addonPtr2->AtkValuesCount)
				{
					break;
				}
				AtkValue atkValue = addonPtr2->AtkValues[num2];
				if (atkValue.Type == AtkValueType.Undefined)
				{
					break;
				}
				string text2 = atkValue.ReadAtkString();
				int num3 = 6 + i * 4 + 3;
				int num4 = ((num3 < addonPtr2->AtkValuesCount) ? addonPtr2->AtkValues[num3].Int : (-1));
				if (!_entriesLogged)
				{
					_logger.LogDebug("TelepotTown entry {Index}: name='{Name}' callback={Callback}", i, text2, num4);
				}
				if (num < 0 && text2 != null && GameFunctions.GameStringEquals(text2, text))
				{
					num = num4;
				}
			}
			_entriesLogged = true;
			if (num < 0)
			{
				return;
			}
			long tickCount = Environment.TickCount64;
			if (tickCount >= _nextFireAtMs)
			{
				if (!_fired)
				{
					_logger.LogDebug("Selecting aethernet destination {Destination} ({Name}) via callback {Callback}", PendingDestination, text, num);
				}
				AtkValue* values = stackalloc AtkValue[2]
				{
					new AtkValue
					{
						Type = AtkValueType.Int,
						Int = 11
					},
					new AtkValue
					{
						Type = AtkValueType.Int,
						Int = num
					}
				};
				addonPtr2->FireCallback(2u, values, close: true);
				_fired = true;
				_nextFireAtMs = tickCount + 100;
			}
		}
	}

	public void Dispose()
	{
		_framework.Update -= OnFrameworkUpdate;
	}
}