using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using Dalamud.Game.ClientState.Conditions;
using Dalamud.Game.ClientState.Objects;
using Dalamud.Game.ClientState.Objects.Types;
using Dalamud.Plugin.Services;
using FFXIVClientStructs.FFXIV.Client.Game;
using FFXIVClientStructs.FFXIV.Client.Game.Event;
using FFXIVClientStructs.FFXIV.Client.Game.InstanceContent;
using Questionable.Controller.Steps.Common;
using Questionable.Controller.Steps.Shared;
using Questionable.Data;
using Questionable.External;
using Questionable.Model;
using Questionable.Model.Questing;

namespace Questionable.Controller.Steps.Interactions;

internal static class SinglePlayerDuty
{
	internal static class SpecialTerritories
	{
		public const ushort Lahabrea = 1052;

		public const ushort ItsProbablyATrap = 665;

		public const ushort Naadam = 688;
	}

	internal sealed class Factory(BossModIpc bossModIpc, TerritoryData territoryData, ICondition condition, IClientState clientState) : ITaskFactory
	{
		public IEnumerable<ITask> CreateAllTasks(Quest quest, QuestSequence sequence, QuestStep step)
		{
			if (step.InteractionType != EInteractionType.SinglePlayerDuty)
			{
				yield break;
			}
			yield return new Mount.UnmountTask();
			if (!bossModIpc.IsConfiguredToRunSoloInstance(quest.Id, step.SinglePlayerDutyOptions))
			{
				yield break;
			}
			if (!territoryData.TryGetContentFinderConditionForSoloInstance(quest.Id, step.SinglePlayerDutyIndex, out TerritoryData.ContentFinderConditionData cfcData))
			{
				throw new TaskException("Failed to get content finder condition for solo instance");
			}
			yield return new StartSinglePlayerDuty(cfcData.ContentFinderConditionId);
			yield return new WaitAtStart.WaitDelay(TimeSpan.FromSeconds(2L));
			yield return new EnableAi(cfcData.TerritoryId == 688);
			if (cfcData.TerritoryId == 1052)
			{
				yield return new SetTarget(14643u);
				yield return new WaitCondition.Task(() => condition[ConditionFlag.Unconscious] || clientState.TerritoryType != 1052, "Wait(death)");
				yield return new DisableAi();
				yield return new WaitCondition.Task(() => !condition[ConditionFlag.Unconscious] || clientState.TerritoryType != 1052, "Wait(resurrection)");
				yield return new EnableAi();
			}
			else if (cfcData.TerritoryId == 665)
			{
				yield return new WaitCondition.Task(() => DutyActionsAvailable() || clientState.TerritoryType != 665, "Wait(Phase 2)");
				yield return new EnableAi(Passive: true);
			}
			else if (cfcData.TerritoryId == 688)
			{
				yield return new WaitCondition.Task(delegate
				{
					if (clientState.TerritoryType != 688)
					{
						return true;
					}
					Vector3 vector = clientState.LocalPlayer?.Position ?? default(Vector3);
					return (new Vector3(352.01f, -1.45f, 288.59f) - vector).Length() < 10f;
				}, "Wait(moving to Ovoo)");
				yield return new Mount.UnmountTask();
				yield return new EnableAi();
			}
			yield return new WaitSinglePlayerDuty(cfcData.ContentFinderConditionId);
			yield return new DisableAi();
			yield return new WaitAtEnd.WaitNextStepOrSequence();
		}

		private unsafe bool DutyActionsAvailable()
		{
			ContentDirector* contentDirector = EventFramework.Instance()->GetContentDirector();
			if (contentDirector != null)
			{
				return contentDirector->DutyActionManager.ActionsPresent;
			}
			return false;
		}
	}

	internal sealed record StartSinglePlayerDuty(uint ContentFinderConditionId) : ITask
	{
		public override string ToString()
		{
			return $"Wait(BossMod, entered instance {ContentFinderConditionId})";
		}
	}

	internal sealed class StartSinglePlayerDutyExecutor(ICondition condition) : TaskExecutor<StartSinglePlayerDuty>()
	{
		private DateTime _enteredAt = DateTime.MinValue;

		protected override bool Start()
		{
			return true;
		}

		public unsafe override ETaskResult Update()
		{
			if (GameMain.Instance()->CurrentContentFinderConditionId != base.Task.ContentFinderConditionId)
			{
				return ETaskResult.StillRunning;
			}
			if (!condition[ConditionFlag.BoundByDuty])
			{
				return ETaskResult.StillRunning;
			}
			if (_enteredAt == DateTime.MinValue)
			{
				_enteredAt = DateTime.Now;
			}
			if (!(DateTime.Now - _enteredAt >= TimeSpan.FromSeconds(2L)))
			{
				return ETaskResult.StillRunning;
			}
			return ETaskResult.TaskComplete;
		}

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

	internal sealed record EnableAi(bool Passive = false) : ITask
	{
		public override string ToString()
		{
			return "BossMod.EnableAi(" + (Passive ? "Passive" : "AutoPull") + ")";
		}
	}

	internal sealed class EnableAiExecutor(BossModIpc bossModIpc) : TaskExecutor<EnableAi>()
	{
		protected override bool Start()
		{
			bossModIpc.EnableAi(base.Task.Passive);
			return true;
		}

		public override ETaskResult Update()
		{
			return ETaskResult.TaskComplete;
		}

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

	internal sealed record WaitSinglePlayerDuty(uint ContentFinderConditionId) : ITask
	{
		public override string ToString()
		{
			return $"Wait(BossMod, left instance {ContentFinderConditionId})";
		}
	}

	internal sealed class WaitSinglePlayerDutyExecutor(BossModIpc bossModIpc, MovementController movementController) : TaskExecutor<WaitSinglePlayerDuty>(), IStoppableTaskExecutor, ITaskExecutor, IDebugStateProvider
	{
		protected override bool Start()
		{
			return true;
		}

		public unsafe override ETaskResult Update()
		{
			if (GameMain.Instance()->CurrentContentFinderConditionId == base.Task.ContentFinderConditionId)
			{
				return ETaskResult.StillRunning;
			}
			return ETaskResult.TaskComplete;
		}

		public void StopNow()
		{
			bossModIpc.DisableAi();
		}

		public override bool ShouldInterruptOnDamage()
		{
			return false;
		}

		public string? GetDebugState()
		{
			if (!movementController.IsNavmeshReady)
			{
				return $"Navmesh: {movementController.BuiltNavmeshPercent}%";
			}
			return null;
		}
	}

	internal sealed record DisableAi : ITask
	{
		public override string ToString()
		{
			return "BossMod.DisableAi";
		}
	}

	internal sealed class DisableAiExecutor(BossModIpc bossModIpc) : TaskExecutor<DisableAi>()
	{
		protected override bool Start()
		{
			bossModIpc.DisableAi();
			return true;
		}

		public override ETaskResult Update()
		{
			return ETaskResult.TaskComplete;
		}

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

	internal sealed record SetTarget(uint DataId) : ITask
	{
		public override string ToString()
		{
			return $"SetTarget({DataId})";
		}
	}

	internal sealed class SetTargetExecutor(ITargetManager targetManager, IObjectTable objectTable) : TaskExecutor<SetTarget>()
	{
		protected override bool Start()
		{
			return true;
		}

		public override ETaskResult Update()
		{
			if (targetManager.Target?.DataId == base.Task.DataId)
			{
				return ETaskResult.TaskComplete;
			}
			IGameObject gameObject = objectTable.FirstOrDefault((IGameObject x) => x.DataId == base.Task.DataId);
			if (gameObject == null)
			{
				return ETaskResult.StillRunning;
			}
			targetManager.Target = gameObject;
			return ETaskResult.StillRunning;
		}

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