using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Numerics;
using Dalamud.Bindings.ImGui;
using Dalamud.Game.Text;
using Dalamud.Interface;
using Dalamud.Interface.Utility.Raii;
using Dalamud.Plugin;
using Questionable.Controller;
using Questionable.Data;
using Questionable.Model;
using Questionable.Windows.QuestComponents;

namespace Questionable.Windows.JournalComponents;

internal sealed class QuestRewardComponent
{
	private enum RowType : byte
	{
		Group,
		Item
	}

	private readonly record struct FlatRow(RowType Type, int GroupIndex, ItemReward? Item);

	private sealed record ItemGroup(string Label, EItemRewardType Type, List<ItemReward> Items);

	private readonly QuestRegistry _questRegistry;

	private readonly QuestData _questData;

	private readonly QuestTooltipComponent _questTooltipComponent;

	private readonly UiUtils _uiUtils;

	private readonly IDalamudPluginInterface _pluginInterface;

	private bool _showEventRewards;

	private string _searchText = string.Empty;

	private List<ItemGroup> _filteredGroups = new List<ItemGroup>();

	private List<FlatRow> _flatRows = new List<FlatRow>();

	private readonly HashSet<string> _expandedGroups = new HashSet<string>();

	private bool _initialized;

	private static readonly int CountPadWidth = 9999.ToString(CultureInfo.CurrentCulture).Length;

	public QuestRewardComponent(QuestRegistry questRegistry, QuestData questData, QuestTooltipComponent questTooltipComponent, UiUtils uiUtils, IDalamudPluginInterface pluginInterface)
	{
		_questRegistry = questRegistry;
		_questData = questData;
		_questTooltipComponent = questTooltipComponent;
		_uiUtils = uiUtils;
		_pluginInterface = pluginInterface;
	}

	public unsafe void DrawItemRewards()
	{
		if (!_initialized)
		{
			UpdateFilter();
			_initialized = true;
		}
		float x = ImGui.GetStyle().ItemSpacing.X;
		float num = ImGui.GetFrameHeight() + ImGui.CalcTextSize("Show seasonal event rewards").X + 3f * x;
		if (UiThemeUtils.SearchInput("##RewardSearch", ref _searchText, 0f - num, "Search items..."))
		{
			UpdateFilter();
		}
		ImGui.SameLine();
		if (UiThemeUtils.WrappedCheckbox("Show seasonal event rewards", ref _showEventRewards))
		{
			UpdateFilter();
		}
		ImGui.Spacing();
		ImGui.TextColored(in UiThemeUtils.MutedTextColor, "Only untradeable items are listed (e.g. the Wind-up Airship can be sold on the market board).");
		ImGui.Separator();
		if (_flatRows.Count == 0)
		{
			UiThemeUtils.EmptyState(FontAwesomeIcon.Gift, "No items match your search.");
			return;
		}
		float x2;
		using (_pluginInterface.UiBuilder.IconFontFixedWidthHandle.Push())
		{
			x2 = ImGui.CalcTextSize(FontAwesomeIcon.Check.ToIconString()).X;
		}
		float fontGlobalScale = ImGui.GetIO().FontGlobalScale;
		using ImRaii.TableDisposable tableDisposable = UiThemeUtils.BeginThemedTable("ItemRewards", 2, ImGuiTableFlags.NoSavedSettings | ImGuiTableFlags.ScrollY);
		if (!tableDisposable)
		{
			return;
		}
		ImGui.TableSetupColumn("Name", ImGuiTableColumnFlags.WidthStretch);
		ImGui.TableSetupColumn("Obtained", ImGuiTableColumnFlags.WidthFixed, 120f * fontGlobalScale);
		ImGui.TableHeadersRow();
		float textLineHeightWithSpacing = ImGui.GetTextLineHeightWithSpacing();
		bool flag = false;
		ImGuiListClipper* intPtr = ImGuiNative.ImGuiListClipper();
		ImGuiNative.Begin(intPtr, _flatRows.Count, textLineHeightWithSpacing);
		ImGuiListClipperPtr imGuiListClipperPtr = intPtr;
		try
		{
			while (imGuiListClipperPtr.Step())
			{
				for (int i = imGuiListClipperPtr.DisplayStart; i < imGuiListClipperPtr.DisplayEnd; i++)
				{
					if (DrawFlatRow(_flatRows[i], x2))
					{
						flag = true;
					}
				}
			}
		}
		finally
		{
			imGuiListClipperPtr.Destroy();
		}
		if (flag)
		{
			RebuildFlatRows();
		}
	}

	private bool DrawFlatRow(FlatRow row, float statusIconSpacing)
	{
		ImGui.TableNextRow();
		ImGui.TableNextColumn();
		if (row.Type == RowType.Group)
		{
			ItemGroup itemGroup = _filteredGroups[row.GroupIndex];
			bool flag = _expandedGroups.Contains(itemGroup.Label);
			UiThemeUtils.DrawTrackerGroupCaret(_pluginInterface.UiBuilder.IconFontFixedWidthHandle, flag);
			ImGui.SameLine();
			bool result = false;
			ImU8String label = new ImU8String(5, 2);
			label.AppendFormatted(itemGroup.Label);
			label.AppendLiteral("##grp");
			label.AppendFormatted(row.GroupIndex);
			if (ImGui.Selectable(label))
			{
				if (flag)
				{
					_expandedGroups.Remove(itemGroup.Label);
				}
				else
				{
					_expandedGroups.Add(itemGroup.Label);
				}
				result = true;
			}
			int num = itemGroup.Items.Count((ItemReward x) => x.IsUnlocked());
			int count = itemGroup.Items.Count;
			ImGui.TableNextColumn();
			UiThemeUtils.DrawTrackerCount(FormatCount(num, count), num == count && count > 0, count == 0);
			return result;
		}
		ItemReward item = row.Item;
		float indentSpacing = ImGui.GetStyle().IndentSpacing;
		ImGui.SetCursorPosX(ImGui.GetCursorPosX() + indentSpacing);
		bool flag2 = item.IsUnlocked();
		Vector4 color = ((!_questRegistry.IsKnownQuest(item.ElementId)) ? UiThemeUtils.StatusUnobtainable : (flag2 ? UiThemeUtils.StatusComplete : UiThemeUtils.StatusLocked));
		IQuestInfo questInfo;
		bool flag3 = _questData.TryGetQuestInfo(item.ElementId, out questInfo);
		string text = item.Name;
		if (questInfo is QuestInfo { IsSeasonalEvent: not false })
		{
			text = text + " " + SeIconChar.Clock.ToIconString();
		}
		ImGui.TreeNodeEx(text, ImGuiTreeNodeFlags.NoTreePushOnOpen | ImGuiTreeNodeFlags.Leaf | ImGuiTreeNodeFlags.SpanFullWidth);
		bool num2 = ImGui.IsItemHovered();
		ImGui.TableNextColumn();
		float num3 = ImGui.GetColumnWidth() / 2f - statusIconSpacing;
		ImGui.SetCursorPosX(ImGui.GetCursorPosX() + num3);
		FontAwesomeIcon icon = (flag2 ? FontAwesomeIcon.Check : FontAwesomeIcon.Times);
		if ((num2 | _uiUtils.ChecklistItem(string.Empty, color, icon)) && flag3)
		{
			using ImRaii.TooltipDisposable tooltipDisposable = ImRaii.Tooltip();
			if (tooltipDisposable.Alive)
			{
				ImU8String text2 = new ImU8String(15, 1);
				text2.AppendLiteral("Obtained from: ");
				text2.AppendFormatted(questInfo.Name);
				ImGui.Text(text2);
				using (ImRaii.PushIndent())
				{
					_questTooltipComponent.DrawInner(questInfo, showItemRewards: false);
				}
			}
		}
		return false;
	}

	private static string FormatCount(int n, int d)
	{
		if (d != 0)
		{
			return n.ToString(CultureInfo.CurrentCulture).PadLeft(CountPadWidth) + " / " + d.ToString(CultureInfo.CurrentCulture).PadLeft(CountPadWidth);
		}
		return "-".PadLeft(CountPadWidth) + " / " + "-".PadLeft(CountPadWidth);
	}

	private void RebuildFlatRows()
	{
		List<FlatRow> list = new List<FlatRow>();
		for (int i = 0; i < _filteredGroups.Count; i++)
		{
			ItemGroup itemGroup = _filteredGroups[i];
			list.Add(new FlatRow(RowType.Group, i, null));
			if (!_expandedGroups.Contains(itemGroup.Label))
			{
				continue;
			}
			foreach (ItemReward item in itemGroup.Items)
			{
				if (_questData.TryGetQuestInfo(item.ElementId, out IQuestInfo _))
				{
					list.Add(new FlatRow(RowType.Item, i, item));
				}
			}
		}
		_flatRows = list;
	}

	private void UpdateFilter()
	{
		List<ItemGroup> list = new List<ItemGroup>();
		AddGroup(list, "Mounts", EItemRewardType.Mount);
		AddGroup(list, "Minions", EItemRewardType.Minion);
		AddGroup(list, "Orchestrion Rolls", EItemRewardType.OrchestrionRoll);
		AddGroup(list, "Triple Triad Cards", EItemRewardType.TripleTriadCard);
		AddGroup(list, "Fashion Accessories", EItemRewardType.FashionAccessory);
		AddGroup(list, "Unlock Links", EItemRewardType.UnlockLink);
		_filteredGroups = list;
		RebuildFlatRows();
	}

	private void AddGroup(List<ItemGroup> groups, string label, EItemRewardType type)
	{
		List<ItemReward> filteredItems = GetFilteredItems(type);
		if (filteredItems.Count > 0)
		{
			groups.Add(new ItemGroup(label, type, filteredItems));
		}
	}

	private List<ItemReward> GetFilteredItems(EItemRewardType type)
	{
		return (from x in _questData.RedeemableItems
			where x.Type == type
			where x.IsUntradable
			select x).Where(delegate(ItemReward x)
		{
			if (!_showEventRewards && _questData.TryGetQuestInfo(x.ElementId, out IQuestInfo questInfo) && questInfo is QuestInfo { IsSeasonalEvent: not false })
			{
				return false;
			}
			return (string.IsNullOrEmpty(_searchText) || x.Name.Contains(_searchText, StringComparison.OrdinalIgnoreCase)) ? true : false;
		}).OrderBy<ItemReward, string>((ItemReward x) => x.Name, StringComparer.CurrentCultureIgnoreCase).ToList();
	}
}