using System;
using System.Collections.Generic;
using Dalamud.Game.ClientState.Conditions;
using Dalamud.Plugin.Services;
using FFXIVClientStructs.FFXIV.Client.Game;
using FFXIVClientStructs.FFXIV.Client.Game.Group;
using LLib.Gear;
using Microsoft.Extensions.Logging;
using Questionable.Controller.Steps.Common;
using Questionable.Controller.Steps.Shared;
using Questionable.Controller.Utils;
using Questionable.Data;
using Questionable.External;
using Questionable.Functions;
using Questionable.Model;
using Questionable.Model.Questing;

namespace Questionable.Controller.Steps.Interactions;

internal static class Duty
{
	internal sealed class Factory(AutoDutyIpc autoDutyIpc, Configuration configuration) : ITaskFactory
	{
		public IEnumerable<ITask> CreateAllTasks(Quest quest, QuestSequence sequence, QuestStep step)
		{
			if (step.InteractionType != EInteractionType.Duty)
			{
				yield break;
			}
			ArgumentNullException.ThrowIfNull(step.DutyOptions, "step.DutyOptions");
			if (autoDutyIpc.IsConfiguredToRunContent(step.DutyOptions))
			{
				AutoDutyIpc.DutyMode dutyMode = GetDutyMode(step.DutyOptions.ContentFinderConditionId, step.DutyOptions.DutyMode);
				if (dutyMode == AutoDutyIpc.DutyMode.UnsyncRegular && (step.DutyOptions.DutyMode == EDutyMode.UnsyncParty || (!step.DutyOptions.DutyMode.HasValue && configuration.Duties.DutyModeOverrides.TryGetValue(step.DutyOptions.ContentFinderConditionId, out var value) && value == EDutyMode.UnsyncParty) || (!step.DutyOptions.DutyMode.HasValue && !configuration.Duties.DutyModeOverrides.ContainsKey(step.DutyOptions.ContentFinderConditionId) && configuration.Duties.DefaultDutyMode == EDutyMode.UnsyncParty)))
				{
					yield return new WaitForPartyTask();
				}
				yield return new StartAutoDutyTask(step.DutyOptions.ContentFinderConditionId, dutyMode);
				yield return new WaitAutoDutyTask(step.DutyOptions.ContentFinderConditionId);
				if (!QuestWorkUtils.HasCompletionFlags(step.CompletionQuestVariablesFlags))
				{
					yield return new WaitAtEnd.WaitNextStepOrSequence();
				}
			}
			else if (!step.DutyOptions.LowPriority)
			{
				yield return new OpenDutyFinderTask(step.DutyOptions.ContentFinderConditionId);
			}
		}

		private AutoDutyIpc.DutyMode GetDutyMode(uint cfcId, EDutyMode? stepDutyMode)
		{
			if (stepDutyMode.HasValue)
			{
				return ConvertToAutoDutyMode(stepDutyMode.Value);
			}
			if (configuration.Duties.DutyModeOverrides.TryGetValue(cfcId, out var value))
			{
				return ConvertToAutoDutyMode(value);
			}
			return ConvertToAutoDutyMode(configuration.Duties.DefaultDutyMode);
		}

		private static AutoDutyIpc.DutyMode ConvertToAutoDutyMode(EDutyMode mode)
		{
			return mode switch
			{
				EDutyMode.Support => AutoDutyIpc.DutyMode.Support, 
				EDutyMode.UnsyncSolo => AutoDutyIpc.DutyMode.UnsyncRegular, 
				EDutyMode.UnsyncParty => AutoDutyIpc.DutyMode.UnsyncRegular, 
				_ => AutoDutyIpc.DutyMode.Support, 
			};
		}
	}

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

	internal sealed class WaitForPartyExecutor(IChatGui chatGui, ILogger<WaitForPartyExecutor> logger) : TaskExecutor<WaitForPartyTask>()
	{
		private DateTime _lastWarningTime = DateTime.MinValue;

		protected override bool Start()
		{
			logger.LogInformation("Waiting for party members before starting duty...");
			return true;
		}

		public unsafe override ETaskResult Update()
		{
			GroupManager* ptr = GroupManager.Instance();
			if (ptr == null)
			{
				return ETaskResult.StillRunning;
			}
			byte memberCount = ptr->MainGroup.MemberCount;
			bool isAlliance = ptr->MainGroup.IsAlliance;
			if (memberCount > 1 || isAlliance)
			{
				logger.LogInformation("Party detected with {MemberCount} members, proceeding with duty", memberCount);
				return ETaskResult.TaskComplete;
			}
			if (DateTime.Now - _lastWarningTime > TimeSpan.FromSeconds(10L))
			{
				chatGui.Print("[Questionable] Waiting for party members before starting duty (Unsync Party mode)...", "Questionable", 576);
				_lastWarningTime = DateTime.Now;
			}
			return ETaskResult.StillRunning;
		}

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

	internal sealed record StartAutoDutyTask(uint ContentFinderConditionId, AutoDutyIpc.DutyMode DutyMode) : ITask
	{
		public override string ToString()
		{
			return $"StartAutoDuty({ContentFinderConditionId}, {DutyMode})";
		}
	}

	internal sealed class StartAutoDutyExecutor(GearStatsCalculator gearStatsCalculator, AutoDutyIpc autoDutyIpc, TerritoryData territoryData, IClientState clientState, IChatGui chatGui, SendNotification.Executor sendNotificationExecutor) : TaskExecutor<StartAutoDutyTask>(), IStoppableTaskExecutor, ITaskExecutor
	{
		protected unsafe override bool Start()
		{
			if (!territoryData.TryGetContentFinderCondition(base.Task.ContentFinderConditionId, out TerritoryData.ContentFinderConditionData contentFinderConditionData))
			{
				throw new TaskException("Failed to get territory ID for content finder condition");
			}
			InventoryManager* intPtr = InventoryManager.Instance();
			if (intPtr == null)
			{
				throw new TaskException("Inventory unavailable");
			}
			InventoryContainer* inventoryContainer = intPtr->GetInventoryContainer(InventoryType.EquippedItems);
			if (inventoryContainer == null)
			{
				throw new TaskException("Equipped items unavailable");
			}
			short num = gearStatsCalculator.CalculateAverageItemLevel(inventoryContainer);
			if (contentFinderConditionData.RequiredItemLevel > num)
			{
				string text = $"Could not use AutoDuty to queue for {contentFinderConditionData.Name}, required item level: {contentFinderConditionData.RequiredItemLevel}, current item level: {num}.";
				if (!sendNotificationExecutor.Start(new SendNotification.Task(EInteractionType.Duty, text)))
				{
					chatGui.PrintError(text, "Questionable", 576);
				}
				return false;
			}
			autoDutyIpc.StartInstance(base.Task.ContentFinderConditionId, base.Task.DutyMode);
			return true;
		}

		public override ETaskResult Update()
		{
			if (!territoryData.TryGetContentFinderCondition(base.Task.ContentFinderConditionId, out TerritoryData.ContentFinderConditionData contentFinderConditionData))
			{
				throw new TaskException("Failed to get territory ID for content finder condition");
			}
			if (clientState.TerritoryType != contentFinderConditionData.TerritoryId)
			{
				return ETaskResult.StillRunning;
			}
			return ETaskResult.TaskComplete;
		}

		public void StopNow()
		{
			autoDutyIpc.Stop();
		}

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

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

	internal sealed class WaitAutoDutyExecutor(AutoDutyIpc autoDutyIpc, TerritoryData territoryData, IClientState clientState) : TaskExecutor<WaitAutoDutyTask>(), IStoppableTaskExecutor, ITaskExecutor
	{
		protected override bool Start()
		{
			return true;
		}

		public override ETaskResult Update()
		{
			if (!territoryData.TryGetContentFinderCondition(base.Task.ContentFinderConditionId, out TerritoryData.ContentFinderConditionData contentFinderConditionData))
			{
				throw new TaskException("Failed to get territory ID for content finder condition");
			}
			if (clientState.TerritoryType == contentFinderConditionData.TerritoryId || !autoDutyIpc.IsStopped())
			{
				return ETaskResult.StillRunning;
			}
			return ETaskResult.TaskComplete;
		}

		public void StopNow()
		{
			autoDutyIpc.Stop();
		}

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

	internal sealed record OpenDutyFinderTask(uint ContentFinderConditionId) : ITask
	{
		public override string ToString()
		{
			return $"OpenDutyFinder({ContentFinderConditionId})";
		}
	}

	internal sealed class OpenDutyFinderExecutor(GameFunctions gameFunctions, ICondition condition) : TaskExecutor<OpenDutyFinderTask>()
	{
		protected override bool Start()
		{
			if (condition[ConditionFlag.InDutyQueue])
			{
				return false;
			}
			gameFunctions.OpenDutyFinder(base.Task.ContentFinderConditionId);
			return true;
		}

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

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