using System;
using System.Collections.Generic;
using Dalamud.Game.ClientState.Objects.Types;
using Microsoft.Extensions.Logging;
using Questionable.Functions;
using Questionable.Model.Questing;

namespace Questionable.Controller.Steps.Interactions;

internal static class FateFarming
{
	internal sealed record WaitForFateTargets(IReadOnlyList<FateActionTarget> Targets) : ITask
	{
		public override string ToString()
		{
			return $"WaitForFateTargets({Targets.Count} targets)";
		}
	}

	internal sealed class WaitForFateTargetsExecutor(GameFunctions gameFunctions, ILogger<WaitForFateTargetsExecutor> logger) : TaskExecutor<WaitForFateTargets>()
	{
		private DateTime _nextPollAt = DateTime.MinValue;

		private bool _loggedWaitingForFate;

		protected override bool Start()
		{
			logger.LogInformation("Waiting for FATE targets to appear ({Count} targets)", base.Task.Targets.Count);
			_loggedWaitingForFate = false;
			return true;
		}

		public override ETaskResult Update()
		{
			if (DateTime.Now < _nextPollAt)
			{
				return ETaskResult.StillRunning;
			}
			ushort currentFateId = gameFunctions.GetCurrentFateId();
			if (currentFateId == 0)
			{
				if (!_loggedWaitingForFate)
				{
					logger.LogInformation("No active FATE yet, waiting for FATE to start before checking targets");
					_loggedWaitingForFate = true;
				}
				_nextPollAt = DateTime.Now.AddSeconds(1.0);
				return ETaskResult.StillRunning;
			}
			_loggedWaitingForFate = false;
			foreach (FateActionTarget target in base.Task.Targets)
			{
				IGameObject gameObject = gameFunctions.FindObjectByDataId(target.DataId, null, warnIfMissing: false);
				if (gameObject != null && gameObject.IsTargetable)
				{
					logger.LogInformation("FATE {FateId} active and target {DataId} is targetable", currentFateId, target.DataId);
					return ETaskResult.TaskComplete;
				}
			}
			_nextPollAt = DateTime.Now.AddSeconds(1.0);
			return ETaskResult.StillRunning;
		}

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

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

	internal sealed class SyncFateLevelExecutor(GameFunctions gameFunctions, ILogger<SyncFateLevelExecutor> logger) : TaskExecutor<SyncFateLevel>()
	{
		protected override bool Start()
		{
			logger.LogInformation("Syncing to FATE level");
			return true;
		}

		public override ETaskResult Update()
		{
			ushort currentFateId = gameFunctions.GetCurrentFateId();
			if (currentFateId == 0)
			{
				logger.LogDebug("No active FATE to sync to, skipping");
				return ETaskResult.TaskComplete;
			}
			gameFunctions.SyncToFate(currentFateId);
			return ETaskResult.TaskComplete;
		}

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

	internal sealed record FateActionLoop(IReadOnlyList<FateActionTarget> Targets, EStatus? RequiredStatusId = null) : ITask
	{
		public bool ShouldRedoOnInterrupt()
		{
			return true;
		}

		public override string ToString()
		{
			return $"FateActionLoop({Targets.Count} targets)";
		}
	}

	internal sealed class FateActionLoopExecutor(GameFunctions gameFunctions, ILogger<FateActionLoopExecutor> logger) : TaskExecutor<FateActionLoop>()
	{
		private DateTime _nextActionAt = DateTime.MinValue;

		private ushort _trackedFateId;

		protected override bool Start()
		{
			_trackedFateId = gameFunctions.GetCurrentFateId();
			logger.LogInformation("Starting FATE action loop with {Count} targets, tracking FATE {FateId}", base.Task.Targets.Count, _trackedFateId);
			return true;
		}

		public override ETaskResult Update()
		{
			if (DateTime.Now < _nextActionAt)
			{
				return ETaskResult.StillRunning;
			}
			if (base.Task.RequiredStatusId.HasValue && !gameFunctions.HasStatus(base.Task.RequiredStatusId.Value))
			{
				logger.LogInformation("Required status {StatusId} lost during FATE action loop, ending cycle to re-apply", base.Task.RequiredStatusId.Value);
				return ETaskResult.TaskComplete;
			}
			if (_trackedFateId == 0)
			{
				_trackedFateId = gameFunctions.GetCurrentFateId();
				if (_trackedFateId != 0)
				{
					logger.LogInformation("Now tracking FATE {FateId}", _trackedFateId);
				}
			}
			if (_trackedFateId != 0 && !gameFunctions.IsFateStillActive(_trackedFateId))
			{
				logger.LogInformation("FATE {FateId} is no longer running, cycle complete", _trackedFateId);
				return ETaskResult.TaskComplete;
			}
			foreach (FateActionTarget target in base.Task.Targets)
			{
				IGameObject gameObject = gameFunctions.FindObjectByDataId(target.DataId, null, warnIfMissing: false);
				if (gameObject != null && gameObject.IsTargetable)
				{
					bool flag = gameFunctions.UseAction(gameObject, target.Action);
					_nextActionAt = (flag ? DateTime.Now.AddSeconds(2.5) : DateTime.Now.AddSeconds(0.5));
					return ETaskResult.StillRunning;
				}
			}
			_nextActionAt = DateTime.Now.AddSeconds(0.25);
			return ETaskResult.StillRunning;
		}

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