using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using FFXIVClientStructs.FFXIV.Client.UI.Agent;
using LLib.GameData;
using Lumina.Excel;
using Lumina.Excel.Sheets;
using Questionable.Model.Questing;

namespace Questionable.Model;

internal sealed class QuestInfo : IQuestInfo
{
	public ElementId QuestId { get; }

	public string Name { get; }

	public ushort Level { get; }

	public uint IssuerDataId { get; }

	public bool IsRepeatable { get; }

	public ImmutableList<PreviousQuestInfo> PreviousQuests { get; private set; }

	public EQuestJoin PreviousQuestJoin { get; }

	public ImmutableList<QuestId> QuestLocks { get; private set; }

	public EQuestJoin QuestLockJoin { get; private set; }

	public List<ushort> PreviousInstanceContent { get; }

	public EQuestJoin PreviousInstanceContentJoin { get; }

	public uint? JournalGenre { get; set; }

	public ushort SortKey { get; set; }

	public bool IsMainScenarioQuest { get; }

	public bool CompletesInstantly { get; }

	public FFXIVClientStructs.FFXIV.Client.UI.Agent.GrandCompany GrandCompany { get; }

	public EAlliedSociety AlliedSociety { get; }

	public byte AlliedSocietyQuestGroup { get; }

	public int AlliedSocietyRank { get; }

	public IReadOnlyList<EClassJob> ClassJobs { get; }

	public bool IsSeasonalEvent { get; }

	public uint NewGamePlusChapter { get; }

	public byte StartingCity { get; set; }

	public byte MoogleDeliveryLevel { get; }

	public bool IsMoogleDeliveryQuest => JournalGenre == 87;

	public IReadOnlyList<ItemReward> ItemRewards { get; }

	public EExpansionVersion Expansion { get; }

	public DateTime? SeasonalQuestExpiry { get; internal set; }

	public bool IsSeasonalQuest { get; internal set; }

	public QuestInfo(Lumina.Excel.Sheets.Quest quest, uint newGamePlusChapter, byte startingCity, JournalGenreOverrides journalGenreOverrides, bool isSeasonalEventQuest = false, DateTime? seasonalQuestExpiry = null)
	{
		QuestId = Questionable.Model.Questing.QuestId.FromRowId(quest.RowId);
		string value = QuestId.Value switch
		{
			85 => " (Lancer)", 
			108 => " (Marauder)", 
			109 => " (Arcanist)", 
			123 => " (Archer)", 
			124 => " (Conjurer)", 
			568 => " (Gladiator)", 
			569 => " (Pugilist)", 
			570 => " (Thaumaturge)", 
			673 => " (Ul'dah)", 
			674 => " (Limsa/Gridania)", 
			1432 => " (Gridania)", 
			1433 => " (Limsa)", 
			1434 => " (Ul'dah)", 
			_ => "", 
		};
		Name = $"{quest.Name}{value}";
		Level = quest.ClassJobLevel[0];
		IssuerDataId = quest.IssuerStart.RowId;
		IsRepeatable = quest.IsRepeatable;
		PreviousQuests = new List<PreviousQuestInfo>
		{
			new PreviousQuestInfo(ReplaceOldQuestIds(Questionable.Model.Questing.QuestId.FromRowId(quest.PreviousQuest[0].RowId)), quest.Unknown7),
			new PreviousQuestInfo(ReplaceOldQuestIds(Questionable.Model.Questing.QuestId.FromRowId(quest.PreviousQuest[1].RowId)), 0),
			new PreviousQuestInfo(ReplaceOldQuestIds(Questionable.Model.Questing.QuestId.FromRowId(quest.PreviousQuest[2].RowId)), 0)
		}.Where((PreviousQuestInfo x) => x.QuestId.Value != 0).ToImmutableList();
		PreviousQuestJoin = (EQuestJoin)quest.PreviousQuestJoin;
		QuestLocks = (from x in quest.QuestLock
			select Questionable.Model.Questing.QuestId.FromRowId(x.RowId) into x
			where x.Value != 0
			select x).ToImmutableList();
		QuestLockJoin = (EQuestJoin)quest.QuestLockJoin;
		(uint?, ushort?) tuple;
		switch (QuestId.Value)
		{
		case 1119:
		case 1120:
		case 1121:
		case 1122:
		case 1123:
		case 1124:
		case 1125:
		case 1126:
		case 1127:
		case 1579:
			tuple = (journalGenreOverrides.ARelicRebornQuests, (ushort)0);
			break;
		case 4196:
		case 4197:
		case 4198:
		case 4199:
		case 4200:
		case 4201:
		case 4202:
		case 4203:
		case 4204:
		case 4205:
		case 4206:
		case 4207:
		case 4208:
		case 4209:
			tuple = (journalGenreOverrides.ThavnairSideQuests, null);
			break;
		case 4173:
			tuple = (journalGenreOverrides.RadzAtHanSideQuests, null);
			break;
		default:
			tuple = (quest.JournalGenre.ValueNullable?.RowId, null);
			break;
		}
		(uint?, ushort?) tuple2 = tuple;
		JournalGenre = tuple2.Item1;
		SortKey = tuple2.Item2 ?? quest.SortKey;
		JournalGenre? valueNullable = quest.JournalGenre.ValueNullable;
		IsMainScenarioQuest = valueNullable.HasValue && valueNullable.GetValueOrDefault().Icon == 61412;
		CompletesInstantly = quest.TodoParams[0].ToDoCompleteSeq == 0;
		PreviousInstanceContent = (from x in quest.InstanceContent
			select (ushort)x.RowId into x
			where x != 0
			select x).ToList();
		PreviousInstanceContentJoin = (EQuestJoin)quest.InstanceContentJoin;
		GrandCompany = (FFXIVClientStructs.FFXIV.Client.UI.Agent.GrandCompany)quest.GrandCompany.RowId;
		AlliedSociety = (EAlliedSociety)quest.BeastTribe.RowId;
		AlliedSocietyQuestGroup = quest.DailyQuestPool;
		AlliedSocietyRank = (int)quest.BeastReputationRank.RowId;
		ClassJobs = QuestInfoUtils.AsList(quest.ClassJobCategory0.ValueNullable);
		IsSeasonalEvent = quest.Festival.RowId != 0;
		IsSeasonalQuest = isSeasonalEventQuest;
		SeasonalQuestExpiry = (IsSeasonalQuest ? seasonalQuestExpiry : ((DateTime?)null));
		SeasonalQuestExpiry = seasonalQuestExpiry;
		NewGamePlusChapter = newGamePlusChapter;
		StartingCity = startingCity;
		MoogleDeliveryLevel = (byte)quest.DeliveryQuest.RowId;
		ItemRewards = (from Item x in from x in quest.Reward
				where x.RowId != 0 && x.Is<Item>()
				select x.GetValueOrDefault<Item>() into x
				where x.HasValue
				select x
			where x.IsUntradable
			select ItemReward.CreateFromItem(x, QuestId) into x
			where x != null
			select x).Cast<ItemReward>().ToList();
		Expansion = (EExpansionVersion)quest.Expansion.RowId;
	}

	private static QuestId ReplaceOldQuestIds(QuestId questId)
	{
		if (questId.Value == 524)
		{
			return new QuestId(4522);
		}
		return questId;
	}

	public void AddPreviousQuest(PreviousQuestInfo questId)
	{
		ImmutableList<PreviousQuestInfo> previousQuests = PreviousQuests;
		int num = 0;
		PreviousQuestInfo[] array = new PreviousQuestInfo[1 + previousQuests.Count];
		foreach (PreviousQuestInfo item in previousQuests)
		{
			array[num] = item;
			num++;
		}
		array[num] = questId;
		PreviousQuests = ImmutableList.Create(new ReadOnlySpan<PreviousQuestInfo>(array));
	}

	public void AddQuestLocks(EQuestJoin questJoin, params QuestId[] questId)
	{
		if (QuestLocks.Count > 0 && QuestLockJoin != questJoin)
		{
			throw new InvalidOperationException();
		}
		QuestLockJoin = questJoin;
		ImmutableList<QuestId> questLocks = QuestLocks;
		int num = 0;
		QuestId[] array = new QuestId[questLocks.Count + questId.Length];
		foreach (QuestId item in questLocks)
		{
			array[num] = item;
			num++;
		}
		ReadOnlySpan<QuestId> readOnlySpan = new ReadOnlySpan<QuestId>(questId);
		readOnlySpan.CopyTo(new Span<QuestId>(array).Slice(num, readOnlySpan.Length));
		num += readOnlySpan.Length;
		QuestLocks = ImmutableList.Create(new ReadOnlySpan<QuestId>(array));
	}
}