#define RELEASE
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Linq;
using System.Text.Json;
using System.Text.Json.Nodes;
using System.Text.RegularExpressions;
using Dalamud.Plugin;
using Dalamud.Plugin.Ipc;
using Dalamud.Plugin.Services;
using LLib.GameData;
using Microsoft.Extensions.Logging;
using Questionable.Data;
using Questionable.Model;
using Questionable.Model.Questing;
using Questionable.QuestPaths;
using Questionable.Validation;
using Questionable.Validation.Validators;

namespace Questionable.Controller;

internal sealed class QuestRegistry : IDisposable
{
	internal sealed class Snapshot
	{
		public Dictionary<ElementId, Quest> Quests { get; }

		public Dictionary<ElementId, FailedQuestLoad> FailedLoads { get; }

		public Dictionary<uint, (ElementId QuestId, QuestStep Step)> ContentFinderConditionIds { get; }

		public List<(uint ContentFinderConditionId, ElementId QuestId, int Sequence)> LowPriorityContentFinderConditionQuests { get; }

		public Dictionary<ElementId, string> QuestFolderNames { get; }

		public int Count { get; set; }

		public Snapshot()
		{
			Quests = new Dictionary<ElementId, Quest>();
			FailedLoads = new Dictionary<ElementId, FailedQuestLoad>();
			ContentFinderConditionIds = new Dictionary<uint, (ElementId, QuestStep)>();
			LowPriorityContentFinderConditionQuests = new List<(uint, ElementId, int)>();
			QuestFolderNames = new Dictionary<ElementId, string>();
		}

		public Snapshot(Snapshot other)
		{
			Quests = new Dictionary<ElementId, Quest>(other.Quests);
			FailedLoads = new Dictionary<ElementId, FailedQuestLoad>(other.FailedLoads);
			ContentFinderConditionIds = new Dictionary<uint, (ElementId, QuestStep)>(other.ContentFinderConditionIds);
			LowPriorityContentFinderConditionQuests = new List<(uint, ElementId, int)>(other.LowPriorityContentFinderConditionQuests);
			QuestFolderNames = new Dictionary<ElementId, string>(other.QuestFolderNames);
			Count = other.Count;
		}
	}

	internal sealed record FailedQuestLoad(ElementId QuestId, string? FilePath, string ErrorMessage, Quest.ESource Source);

	private readonly IDalamudPluginInterface _pluginInterface;

	private readonly QuestData _questData;

	private readonly QuestValidator _questValidator;

	private readonly JsonSchemaValidator _jsonSchemaValidator;

	private readonly ILogger<QuestRegistry> _logger;

	private readonly TerritoryData _territoryData;

	private readonly IChatGui _chatGui;

	private readonly ICallGateProvider<object> _reloadDataIpc;

	private volatile Snapshot _snapshot = new Snapshot();

	public IEnumerable<Quest> AllQuests => _snapshot.Quests.Values;

	public int Count => _snapshot.Count;

	public IReadOnlyDictionary<ElementId, FailedQuestLoad> FailedLoads => _snapshot.FailedLoads;

	public IReadOnlyList<(uint ContentFinderConditionId, ElementId QuestId, int Sequence)> LowPriorityContentFinderConditionQuests => _snapshot.LowPriorityContentFinderConditionQuests;

	public event EventHandler? Reloaded;

	public QuestRegistry(IDalamudPluginInterface pluginInterface, QuestData questData, QuestValidator questValidator, JsonSchemaValidator jsonSchemaValidator, ILogger<QuestRegistry> logger, TerritoryData territoryData, IChatGui chatGui, IFramework framework)
	{
		_pluginInterface = pluginInterface;
		_questData = questData;
		_questValidator = questValidator;
		_jsonSchemaValidator = jsonSchemaValidator;
		_logger = logger;
		_territoryData = territoryData;
		_chatGui = chatGui;
		_reloadDataIpc = _pluginInterface.GetIpcProvider<object>("Questionable.ReloadData");
	}

	public void Dispose()
	{
	}

	internal Snapshot Build()
	{
		_questValidator.Reset();
		Snapshot snapshot = new Snapshot();
		LoadQuestsFromAssembly(snapshot);
		try
		{
			LoadFromDirectory(snapshot, new DirectoryInfo(Path.Combine(_pluginInterface.ConfigDirectory.FullName, "Quests")), Quest.ESource.UserDirectory);
		}
		catch (Exception exception)
		{
			_logger.LogError(exception, "Failed to load all quests from user directory (some may have been successfully loaded)");
		}
		LoadCfcIds(snapshot);
		snapshot.Count = snapshot.Quests.Count<KeyValuePair<ElementId, Quest>>((KeyValuePair<ElementId, Quest> x) => !x.Value.Root.Disabled);
		return snapshot;
	}

	internal void Publish(Snapshot snapshot, bool sendReloadDataIpc = true, bool validateQuests = true)
	{
		_snapshot = snapshot;
		if (validateQuests)
		{
			ValidateQuests();
		}
		this.Reloaded?.Invoke(this, EventArgs.Empty);
		if (sendReloadDataIpc)
		{
			try
			{
				_reloadDataIpc.SendMessage();
			}
			catch (Exception exception)
			{
				_logger.LogWarning(exception, "Error during Reload.SendMessage IPC");
			}
		}
		_logger.LogDebug("Loaded {Count} quests in total", snapshot.Quests.Count);
	}

	public void Reload()
	{
		Publish(Build());
	}

	[Conditional("RELEASE")]
	private void LoadQuestsFromAssembly(Snapshot snapshot)
	{
		foreach (var (elementId2, questRoot2) in AssemblyQuestLoader.GetQuests())
		{
			try
			{
				DateTime? dateTime = (questRoot2.SeasonalQuestExpiry.HasValue ? new DateTime?(DateTime.SpecifyKind(questRoot2.SeasonalQuestExpiry.Value, DateTimeKind.Utc)) : ((DateTime?)null));
				if (_questData.TryGetQuestInfo(elementId2, out IQuestInfo questInfo))
				{
					goto IL_0173;
				}
				if (elementId2 is UnlockLinkId unlockLinkId)
				{
					string text = unlockLinkId.ToString();
					if (text.Length > 1 && text.StartsWith('U'))
					{
						string text2 = text.Substring(1);
						string text3 = ((text2 == "568") ? "Patch 7.3 Fantasia" : ((!(text2 == "506")) ? ("U" + text2) : "Patch 7.2 Fantasia"));
						text = text3;
					}
					else
					{
						text = $"Unlock Link {unlockLinkId.Value}";
					}
					questInfo = new UnlockLinkQuestInfo(unlockLinkId, text, 0u, dateTime);
					_logger.LogDebug("Created UnlockLinkQuestInfo for {QuestId} from assembly", elementId2);
					_questData.AddOrReplaceQuestInfo(questInfo);
					goto IL_0173;
				}
				_logger.LogWarning("Not loading unknown quest {QuestId} from assembly: Quest not found in quest data", elementId2);
				goto end_IL_0028;
				IL_0173:
				if (questRoot2.IsSeasonalQuest.HasValue || questRoot2.SeasonalQuestExpiry.HasValue)
				{
					_questData.ApplySeasonalOverride(elementId2, questRoot2.IsSeasonalQuest ?? questInfo.IsSeasonalQuest, dateTime);
				}
				IQuestInfo questInfo2 = _questData.GetQuestInfo(elementId2);
				Quest quest = new Quest
				{
					Id = elementId2,
					Root = questRoot2,
					Info = questInfo2,
					Source = Quest.ESource.Assembly,
					SourcePath = null
				};
				snapshot.Quests[quest.Id] = quest;
				end_IL_0028:;
			}
			catch (Exception ex)
			{
				_logger.LogWarning("Not loading unknown quest {QuestId} from assembly: {Message}", elementId2, ex.Message);
			}
		}
		_logger.LogDebug("Loaded {Count} quests from assembly", snapshot.Quests.Count);
	}

	[Conditional("DEBUG")]
	private void LoadQuestsFromProjectDirectory(Snapshot snapshot)
	{
		DirectoryInfo directoryInfo = _pluginInterface.AssemblyLocation.Directory?.Parent?.Parent;
		if (directoryInfo == null)
		{
			return;
		}
		DirectoryInfo directoryInfo2 = new DirectoryInfo(Path.Combine(directoryInfo.FullName, "Paths", "QuestPaths"));
		try
		{
			foreach (string value in ExpansionData.ExpansionFolders.Values)
			{
				LoadFromDirectory(snapshot, new DirectoryInfo(Path.Combine(directoryInfo2.FullName, value)), Quest.ESource.ProjectDirectory, LogLevel.Trace);
			}
		}
		catch (Exception ex)
		{
			snapshot.Quests.Clear();
			_chatGui.PrintError("Unable to load quests - " + ex.GetType().Name + ": " + ex.Message, "Questionable", 576);
			_logger.LogError(ex, "Failed to load quests from project directory");
		}
	}

	private void LoadCfcIds(Snapshot snapshot)
	{
		foreach (Quest value2 in snapshot.Quests.Values)
		{
			foreach (QuestSequence item in value2.AllSequences())
			{
				foreach (QuestStep item2 in item.Steps.Where(delegate(QuestStep x)
				{
					EInteractionType interactionType = x.InteractionType;
					return (uint)(interactionType - 19) <= 1u;
				}))
				{
					if (item2 != null && item2.InteractionType == EInteractionType.Duty)
					{
						DutyOptions dutyOptions = item2.DutyOptions;
						if (dutyOptions != null)
						{
							snapshot.ContentFinderConditionIds[dutyOptions.ContentFinderConditionId] = (value2.Id, item2);
							if (DutyRegistry.Duties.TryGetValue(dutyOptions.ContentFinderConditionId, out DutyEntry value) && value.LowPriority)
							{
								snapshot.LowPriorityContentFinderConditionQuests.Add((dutyOptions.ContentFinderConditionId, value2.Id, item.Sequence));
							}
							continue;
						}
					}
					if (item2.InteractionType == EInteractionType.SinglePlayerDuty && _territoryData.TryGetContentFinderConditionForSoloInstance(value2.Id, item2.SinglePlayerDutyIndex, out TerritoryData.ContentFinderConditionData contentFinderConditionData))
					{
						snapshot.ContentFinderConditionIds[contentFinderConditionData.ContentFinderConditionId] = (value2.Id, item2);
					}
				}
			}
		}
	}

	private void ValidateQuests()
	{
		_questValidator.Validate(_snapshot.Quests.Values.Where((Quest x) => x.Source != Quest.ESource.Assembly).ToList());
	}

	private void LoadQuestFromStream(Snapshot snapshot, string fileName, Stream stream, Quest.ESource source, string directoryName, string? sourcePath)
	{
		if (source == Quest.ESource.UserDirectory)
		{
			_logger.LogTrace("Loading quest from '{FileName}'", fileName);
		}
		ElementId elementId = ExtractQuestIdFromName(fileName);
		if (elementId == null)
		{
			return;
		}
		JsonNode jsonNode;
		try
		{
			jsonNode = JsonNode.Parse(stream);
		}
		catch (JsonException ex)
		{
			ValidationIssue validationIssue = new ValidationIssue
			{
				PathType = EPathType.Quest,
				Id = elementId.ToString(),
				Location = null,
				Type = EIssueType.InvalidJsonSyntax,
				Severity = EIssueSeverity.Error,
				Description = "JSON syntax error in " + fileName + ": " + ex.Message
			};
			_questValidator.AddValidationIssue(validationIssue);
			snapshot.FailedLoads[elementId] = new FailedQuestLoad(elementId, fileName, validationIssue.Description, source);
			return;
		}
		try
		{
			List<ValidationIssue> list = _jsonSchemaValidator.ValidateImmediate(elementId, jsonNode);
			if (list.Count > 0)
			{
				foreach (ValidationIssue item in list)
				{
					_questValidator.AddValidationIssue(item);
				}
				return;
			}
		}
		catch (Exception ex2)
		{
			_questValidator.AddValidationIssue(new ValidationIssue
			{
				PathType = EPathType.Quest,
				Id = elementId.ToString(),
				Location = null,
				Type = EIssueType.InvalidJsonSchema,
				Severity = EIssueSeverity.Error,
				Description = "Schema validation error: " + (ex2.InnerException?.Message ?? ex2.Message)
			});
			return;
		}
		QuestRoot questRoot;
		try
		{
			questRoot = jsonNode.Deserialize<QuestRoot>();
		}
		catch (JsonException ex3)
		{
			var (location, text) = FormatDeserializationError(ex3);
			_questValidator.AddValidationIssue(new ValidationIssue
			{
				PathType = EPathType.Quest,
				Id = elementId.ToString(),
				Location = location,
				Type = EIssueType.InvalidJsonSchema,
				Severity = EIssueSeverity.Error,
				Description = text
			});
			snapshot.FailedLoads[elementId] = new FailedQuestLoad(elementId, fileName, text, source);
			return;
		}
		if (!_questData.TryGetQuestInfo(elementId, out IQuestInfo questInfo))
		{
			if (!(elementId is UnlockLinkId unlockLinkId))
			{
				_logger.LogWarning("Not loading unknown quest {QuestId} from project file {FileName}", elementId, fileName);
				return;
			}
			string fileNameWithoutExtension = Path.GetFileNameWithoutExtension(fileName);
			int num = fileNameWithoutExtension.IndexOf('_', StringComparison.Ordinal);
			string name = ((num >= 0 && num + 1 < fileNameWithoutExtension.Length) ? fileNameWithoutExtension.Substring(num + 1) : fileNameWithoutExtension);
			name = NormalizeDerivedName(name);
			uint issuerDataId = 0u;
			string patch = null;
			if (jsonNode is JsonObject jsonObject)
			{
				if (jsonObject.TryGetPropertyValue("DataId", out JsonNode jsonNode2) && jsonNode2 != null)
				{
					try
					{
						issuerDataId = jsonNode2.GetValue<uint>();
					}
					catch (Exception)
					{
						issuerDataId = 0u;
					}
				}
				if (jsonObject.TryGetPropertyValue("Patch", out JsonNode jsonNode3) && jsonNode3 != null)
				{
					try
					{
						patch = jsonNode3.GetValue<string>();
					}
					catch (Exception)
					{
						patch = null;
					}
				}
			}
			DateTime? expiryTime = (questRoot.SeasonalQuestExpiry.HasValue ? new DateTime?(DateTime.SpecifyKind(questRoot.SeasonalQuestExpiry.Value, DateTimeKind.Utc)) : ((DateTime?)null));
			questInfo = new UnlockLinkQuestInfo(unlockLinkId, name, issuerDataId, expiryTime, patch);
			_logger.LogDebug("Created UnlockLinkQuestInfo for {QuestId} from project file '{FileName}'", elementId, fileName);
			_questData.AddOrReplaceQuestInfo(questInfo);
		}
		if (questRoot.IsSeasonalQuest.HasValue || questRoot.SeasonalQuestExpiry.HasValue)
		{
			DateTime? expiry = (questRoot.SeasonalQuestExpiry.HasValue ? new DateTime?(DateTime.SpecifyKind(questRoot.SeasonalQuestExpiry.Value, DateTimeKind.Utc)) : ((DateTime?)null));
			_questData.ApplySeasonalOverride(elementId, questRoot.IsSeasonalQuest ?? questInfo.IsSeasonalQuest, expiry);
		}
		Quest quest = new Quest
		{
			Id = elementId,
			Root = questRoot,
			Info = questInfo,
			Source = source,
			SourcePath = sourcePath
		};
		snapshot.Quests[quest.Id] = quest;
		if (!string.IsNullOrEmpty(directoryName))
		{
			snapshot.QuestFolderNames[elementId] = directoryName;
		}
	}

	private void LoadFromDirectory(Snapshot snapshot, DirectoryInfo directory, Quest.ESource source, LogLevel logLevel = LogLevel.Debug)
	{
		if (!directory.Exists)
		{
			_logger.LogDebug("Not loading quests from {DirectoryName} (doesn't exist)", directory);
			return;
		}
		if (source == Quest.ESource.UserDirectory)
		{
			_logger.Log(logLevel, "Loading quests from {DirectoryName}", directory);
		}
		FileInfo[] files = directory.GetFiles("*.json");
		foreach (FileInfo fileInfo in files)
		{
			try
			{
				using FileStream stream = fileInfo.OpenRead();
				LoadQuestFromStream(snapshot, fileInfo.Name, stream, source, directory.Name, fileInfo.FullName);
			}
			catch (Exception innerException)
			{
				throw new InvalidDataException("Unable to load file " + fileInfo.FullName, innerException);
			}
		}
		DirectoryInfo[] directories = directory.GetDirectories();
		foreach (DirectoryInfo directory2 in directories)
		{
			LoadFromDirectory(snapshot, directory2, source, logLevel);
		}
	}

	private static (string? Location, string Description) FormatDeserializationError(JsonException ex)
	{
		string path = ex.Path;
		if (string.IsNullOrEmpty(path))
		{
			return (Location: null, Description: "Invalid value in quest file: " + (ex.InnerException?.Message ?? ex.Message));
		}
		string item = null;
		Match match = Regex.Match(path, "QuestSequence\\[(\\d+)\\]");
		Match match2 = Regex.Match(path, "Steps\\[(\\d+)\\]");
		if (match.Success)
		{
			item = (match2.Success ? ("Seq " + match.Groups[1].Value + ", Step " + match2.Groups[1].Value) : ("Seq " + match.Groups[1].Value));
		}
		Match match3 = Regex.Match(path, "\\.(\\w+)$");
		string text = (match3.Success ? match3.Groups[1].Value : path);
		string text2 = ex.InnerException?.Message ?? "";
		string item2 = (text2.Contains("could not be converted", StringComparison.Ordinal) ? ("'" + text + "' has an invalid value") : ((!text2.Contains("is not supported", StringComparison.Ordinal)) ? ("'" + text + "' could not be read: " + text2) : ("'" + text + "' has an unrecognized value")));
		return (Location: item, Description: item2);
	}

	private static ElementId? ExtractQuestIdFromName(string resourceName)
	{
		string fileNameWithoutExtension = Path.GetFileNameWithoutExtension(resourceName);
		fileNameWithoutExtension = fileNameWithoutExtension.Substring(fileNameWithoutExtension.LastIndexOf('.') + 1);
		if (!fileNameWithoutExtension.Contains('_', StringComparison.Ordinal))
		{
			return null;
		}
		return ElementId.FromString(fileNameWithoutExtension.Split('_', 2)[0]);
	}

	public bool IsKnownQuest(ElementId questId)
	{
		return _snapshot.Quests.ContainsKey(questId);
	}

	public bool TryGetQuest(ElementId questId, [NotNullWhen(true)] out Quest? quest)
	{
		return _snapshot.Quests.TryGetValue(questId, out quest);
	}

	public List<QuestInfo> GetKnownClassJobQuests(EClassJob classJob, bool includeRoleQuests = true)
	{
		Dictionary<ElementId, Quest> quests = _snapshot.Quests;
		List<QuestInfo> list = _questData.GetClassJobQuests(classJob, includeRoleQuests).ToList();
		if (classJob.AsJob() != classJob)
		{
			list.AddRange(_questData.GetClassJobQuests(classJob.AsJob(), includeRoleQuests));
		}
		return list.Where((QuestInfo x) => quests.ContainsKey(x.QuestId)).ToList();
	}

	public IEnumerable<ElementId> GetAllQuestIds()
	{
		return _snapshot.Quests.Keys;
	}

	public bool TryGetQuestFolderName(ElementId questId, [NotNullWhen(true)] out string? folderName)
	{
		return _snapshot.QuestFolderNames.TryGetValue(questId, out folderName);
	}

	private static string NormalizeDerivedName(string name)
	{
		if (string.IsNullOrWhiteSpace(name))
		{
			return name ?? string.Empty;
		}
		name = name.Replace("_", " ", StringComparison.OrdinalIgnoreCase);
		name = Regex.Replace(name, "\\s+", " ");
		name = Regex.Replace(name, "\\b(Patch)\\s+(\\d+)\\s+(\\d+)\\b", "$1 $2.$3", RegexOptions.IgnoreCase);
		return name;
	}
}