using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Numerics;
using Dalamud.Bindings.ImGui;
using Dalamud.Interface;
using Dalamud.Interface.Colors;
using Dalamud.Interface.Utility.Raii;
using Dalamud.Plugin;
using Microsoft.Extensions.Logging;
using Questionable.Data;
using Questionable.Functions;
using Questionable.Model;
using Questionable.Model.Questing;

namespace Questionable.Windows.JournalComponents;

internal sealed class DutyJournalComponent
{
	private sealed record DutyCategory(string Name, List<DutyInfo> Duties);

	private sealed record DutyCounts(int Unlocked, int Completed, int CompletionTrackable, int Total)
	{
		public DutyCounts()
			: this(0, 0, 0, 0)
		{
		}
	}

	private readonly DutyUnlockData _dutyUnlockData;

	private readonly QuestData _questData;

	private readonly QuestFunctions _questFunctions;

	private readonly UiUtils _uiUtils;

	private readonly IDalamudPluginInterface _pluginInterface;

	private readonly ILogger<DutyJournalComponent> _logger;

	private List<DutyCategory> _filteredCategories = new List<DutyCategory>();

	private Dictionary<string, DutyCounts> _categoryCounts = new Dictionary<string, DutyCounts>();

	private string _searchText = string.Empty;

	private bool _showLockedOnly;

	private bool _showUnlockedOnly;

	public DutyJournalComponent(DutyUnlockData dutyUnlockData, QuestData questData, QuestFunctions questFunctions, UiUtils uiUtils, IDalamudPluginInterface pluginInterface, ILogger<DutyJournalComponent> logger)
	{
		_dutyUnlockData = dutyUnlockData;
		_questData = questData;
		_questFunctions = questFunctions;
		_uiUtils = uiUtils;
		_pluginInterface = pluginInterface;
		_logger = logger;
	}

	public void DrawDuties()
	{
		using ImRaii.IEndObject endObject = ImRaii.TabItem("Duties");
		if (!endObject)
		{
			return;
		}
		if (ImGui.CollapsingHeader("Explanation", ImGuiTreeNodeFlags.DefaultOpen))
		{
			ImGui.Text("The list below shows all duties and their unlock status.");
			ImGui.BulletText("'Unlocked' shows duties you have access to.");
			ImGui.BulletText("'Completed' shows duties you have finished at least once.");
			ImGui.BulletText("Click on a duty to see which quest unlocks it.");
			ImGui.Spacing();
			ImGui.Separator();
			ImGui.Spacing();
		}
		DrawFilterControls();
		if (_filteredCategories.Count > 0)
		{
			using (ImRaii.IEndObject endObject2 = ImRaii.Table("Duties", 3, ImGuiTableFlags.NoSavedSettings))
			{
				if (!endObject2)
				{
					return;
				}
				ImGui.TableSetupColumn("Name", ImGuiTableColumnFlags.NoHide);
				ImGui.TableSetupColumn("Unlocked", ImGuiTableColumnFlags.WidthFixed, 120f * ImGui.GetIO().FontGlobalScale);
				ImGui.TableSetupColumn("Completed", ImGuiTableColumnFlags.WidthFixed, 120f * ImGui.GetIO().FontGlobalScale);
				ImGui.TableHeadersRow();
				foreach (DutyCategory filteredCategory in _filteredCategories)
				{
					DrawCategory(filteredCategory);
				}
				return;
			}
		}
		ImGui.Text("No duties match your search.");
	}

	private void DrawFilterControls()
	{
		if (ImGui.Checkbox("Locked Only", ref _showLockedOnly))
		{
			if (_showLockedOnly)
			{
				_showUnlockedOnly = false;
			}
			UpdateFilter();
		}
		ImGui.SameLine();
		if (ImGui.Checkbox("Unlocked Only", ref _showUnlockedOnly))
		{
			if (_showUnlockedOnly)
			{
				_showLockedOnly = false;
			}
			UpdateFilter();
		}
		ImGui.SameLine();
		ImGui.SetNextItemWidth(ImGui.GetContentRegionAvail().X);
		if (ImGui.InputTextWithHint(string.Empty, "Search duties...", ref _searchText, 256))
		{
			UpdateFilter();
		}
	}

	private void DrawCategory(DutyCategory category)
	{
		DutyCounts valueOrDefault = _categoryCounts.GetValueOrDefault(category.Name, new DutyCounts());
		if (valueOrDefault.Total == 0)
		{
			return;
		}
		ImGui.TableNextRow();
		ImGui.TableNextColumn();
		bool num = ImGui.TreeNodeEx(category.Name, ImGuiTreeNodeFlags.SpanFullWidth);
		ImGui.TableNextColumn();
		DrawCount(valueOrDefault.Unlocked, valueOrDefault.Total);
		ImGui.TableNextColumn();
		DrawCount(valueOrDefault.Completed, valueOrDefault.CompletionTrackable);
		if (!num)
		{
			return;
		}
		foreach (DutyInfo duty in category.Duties)
		{
			DrawDuty(duty);
		}
		ImGui.TreePop();
	}

	private void DrawDuty(DutyInfo duty)
	{
		ImGui.TableNextRow();
		ImGui.TableNextColumn();
		string text = $"Lv{duty.Level} {duty.Name}";
		if (duty.ItemLevel > 0)
		{
			text += $" (i{duty.ItemLevel})";
		}
		ImGui.TreeNodeEx(text, ImGuiTreeNodeFlags.NoTreePushOnOpen | ImGuiTreeNodeFlags.Leaf | ImGuiTreeNodeFlags.SpanFullWidth);
		if (ImGui.IsItemHovered())
		{
			DrawDutyTooltip(duty);
		}
		ImGui.TableNextColumn();
		DrawDutyStatus(duty.IsUnlocked);
		ImGui.TableNextColumn();
		DrawDutyStatus(duty.IsCompleted);
	}

	private void DrawDutyTooltip(DutyInfo duty)
	{
		using ImRaii.IEndObject endObject = ImRaii.Tooltip();
		if (!endObject)
		{
			return;
		}
		ImGui.TextColored(ImGuiColors.DalamudWhite, duty.Name);
		Vector4 col = ImGuiColors.DalamudGrey;
		ImU8String text = new ImU8String(12, 1);
		text.AppendLiteral("Content ID: ");
		text.AppendFormatted(duty.ContentFinderConditionId);
		ImGui.TextColored(in col, text);
		ImGui.Separator();
		ImU8String text2 = new ImU8String(16, 1);
		text2.AppendLiteral("Level Required: ");
		text2.AppendFormatted(duty.Level);
		ImGui.Text(text2);
		if (duty.ItemLevel > 0)
		{
			ImU8String text3 = new ImU8String(21, 1);
			text3.AppendLiteral("Item Level Required: ");
			text3.AppendFormatted(duty.ItemLevel);
			ImGui.Text(text3);
		}
		ImU8String text4 = new ImU8String(6, 1);
		text4.AppendLiteral("Type: ");
		text4.AppendFormatted(duty.ContentTypeName);
		ImGui.Text(text4);
		if (duty.IsHighEndDuty)
		{
			ImGui.SameLine();
			ImGui.TextColored(ImGuiColors.DalamudOrange, "(High-End)");
		}
		ImGui.Separator();
		if (duty.IsUnlocked)
		{
			ImGui.TextColored(ImGuiColors.ParsedGreen, "Status: Unlocked");
		}
		else
		{
			ImGui.TextColored(ImGuiColors.DalamudRed, "Status: Locked");
		}
		if (duty.UnlockQuests.Count > 0)
		{
			ImGui.Separator();
			ImGui.Text("Unlock Quest(s):");
			{
				foreach (QuestId unlockQuest in duty.UnlockQuests)
				{
					if (_questData.TryGetQuestInfo(unlockQuest, out IQuestInfo questInfo))
					{
						var (color, icon, _) = _uiUtils.GetQuestStyle(unlockQuest);
						_uiUtils.ChecklistItem($"{questInfo.Name} ({unlockQuest})", color, icon);
					}
					else
					{
						_uiUtils.ChecklistItem($"Unknown Quest ({unlockQuest})", ImGuiColors.DalamudGrey, FontAwesomeIcon.Question);
					}
				}
				return;
			}
		}
		ImGui.Separator();
		ImGui.TextColored(ImGuiColors.DalamudGrey, "No unlock quest data available.");
	}

	private void DrawDutyStatus(bool? status)
	{
		float num;
		using (_pluginInterface.UiBuilder.IconFontFixedWidthHandle.Push())
		{
			num = ImGui.GetColumnWidth() / 2f - ImGui.CalcTextSize(FontAwesomeIcon.Check.ToIconString()).X;
		}
		ImGui.SetCursorPosX(ImGui.GetCursorPosX() + num);
		if (!status.HasValue)
		{
			_uiUtils.ChecklistItem(string.Empty, ImGuiColors.DalamudGrey, FontAwesomeIcon.Minus);
		}
		else if (status.Value)
		{
			_uiUtils.ChecklistItem(string.Empty, ImGuiColors.ParsedGreen, FontAwesomeIcon.Check);
		}
		else
		{
			_uiUtils.ChecklistItem(string.Empty, ImGuiColors.DalamudRed, FontAwesomeIcon.Times);
		}
	}

	private static void DrawCount(int count, int total)
	{
		string text = 9999.ToString(CultureInfo.CurrentCulture);
		ImGui.PushFont(UiBuilder.MonoFont);
		if (total == 0)
		{
			Vector4 col = ImGuiColors.DalamudGrey;
			ImU8String text2 = new ImU8String(3, 2);
			text2.AppendFormatted("-".PadLeft(text.Length));
			text2.AppendLiteral(" / ");
			text2.AppendFormatted("-".PadLeft(text.Length));
			ImGui.TextColored(in col, text2);
		}
		else
		{
			string text3 = count.ToString(CultureInfo.CurrentCulture).PadLeft(text.Length) + " / " + total.ToString(CultureInfo.CurrentCulture).PadLeft(text.Length);
			if (count == total)
			{
				ImGui.TextColored(ImGuiColors.ParsedGreen, text3);
			}
			else
			{
				ImGui.TextUnformatted(text3);
			}
		}
		ImGui.PopFont();
	}

	public void UpdateFilter()
	{
		List<DutyCategory> list = new List<DutyCategory>();
		AddCategory(list, "Dungeons", _dutyUnlockData.GetDungeons());
		AddCategory(list, "Hard Dungeons", _dutyUnlockData.GetHardDungeons());
		AddCategory(list, "Guildhests", _dutyUnlockData.GetGuildhests());
		AddCategory(list, "Trials", _dutyUnlockData.GetTrials());
		AddCategory(list, "Hard Trials", _dutyUnlockData.GetHardTrials());
		AddCategory(list, "Extreme Trials", _dutyUnlockData.GetExtremeTrials());
		AddCategory(list, "Unreal Trials", _dutyUnlockData.GetUnrealTrials());
		AddCategory(list, "Normal Raids", _dutyUnlockData.GetNormalRaids());
		AddCategory(list, "Savage Raids", _dutyUnlockData.GetSavageRaids());
		AddCategory(list, "Alliance Raids", _dutyUnlockData.GetAllianceRaids());
		AddCategory(list, "Chaotic Alliance Raids", _dutyUnlockData.GetChaoticAllianceRaids());
		AddCategory(list, "Ultimate Raids", _dutyUnlockData.GetUltimateRaids());
		AddCategory(list, "Deep Dungeons", _dutyUnlockData.GetDeepDungeons());
		AddCategory(list, "Variant Dungeons", _dutyUnlockData.GetVariantDungeons());
		AddCategory(list, "Criterion Dungeons", _dutyUnlockData.GetCriterionDungeons());
		AddCategory(list, "Criterion Savage", _dutyUnlockData.GetCriterionSavageDungeons());
		_filteredCategories = list.Where((DutyCategory c) => c.Duties.Count > 0).ToList();
		RefreshCounts();
	}

	private void AddCategory(List<DutyCategory> categories, string name, IEnumerable<DutyInfo> duties)
	{
		List<DutyInfo> list = (from d in duties
			where MatchesFilter(d)
			orderby d.Level, d.ItemLevel, d.ContentFinderConditionId
			select d).ToList();
		if (list.Count > 0)
		{
			categories.Add(new DutyCategory(name, list));
		}
	}

	private bool MatchesFilter(DutyInfo duty)
	{
		if (!string.IsNullOrEmpty(_searchText) && !duty.Name.Contains(_searchText, StringComparison.OrdinalIgnoreCase))
		{
			return false;
		}
		if (_showLockedOnly && duty.IsUnlocked)
		{
			return false;
		}
		if (_showUnlockedOnly && !duty.IsUnlocked)
		{
			return false;
		}
		return true;
	}

	public void RefreshCounts()
	{
		_categoryCounts.Clear();
		foreach (DutyCategory filteredCategory in _filteredCategories)
		{
			int unlocked = filteredCategory.Duties.Count((DutyInfo d) => d.IsUnlocked);
			int completed = filteredCategory.Duties.Count((DutyInfo d) => d.IsCompleted == true);
			int completionTrackable = filteredCategory.Duties.Count((DutyInfo d) => d.IsCompleted.HasValue);
			int count = filteredCategory.Duties.Count;
			_categoryCounts[filteredCategory.Name] = new DutyCounts(unlocked, completed, completionTrackable, count);
		}
	}

	public void ClearCounts(int type, int code)
	{
		foreach (string item in _categoryCounts.Keys.ToList())
		{
			_categoryCounts[item] = _categoryCounts[item]with
			{
				Unlocked = 0,
				Completed = 0,
				CompletionTrackable = 0
			};
		}
	}
}