using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using Dalamud.Bindings.ImGui;
using Dalamud.Interface.Utility.Raii;
using Dalamud.Interface.Windowing;
using Dalamud.Plugin;
using LLib.ImGui;
using Questionable.Data;
using Questionable.Model.Changelog;
using Questionable.Windows.ChangelogComponents;

namespace Questionable.Windows;

internal sealed class ChangelogWindow : LWindow
{
	private readonly Configuration _configuration;

	private readonly IDalamudPluginInterface _pluginInterface;

	private readonly ChangelogHeaderComponent _headerComponent;

	private readonly ChangelogFooterComponent _footerComponent;

	private int _windowOpenCount;

	private bool _hasSetInitialState;

	private float _headerAnimationTime;

	public ChangelogWindow(Configuration configuration, IDalamudPluginInterface pluginInterface)
		: base("Questionable Changelog###QuestionableChangelog", ImGuiWindowFlags.NoTitleBar)
	{
		_configuration = configuration;
		_pluginInterface = pluginInterface;
		_headerComponent = new ChangelogHeaderComponent();
		_footerComponent = new ChangelogFooterComponent();
		base.Size = new Vector2(900f, 650f);
		base.SizeCondition = ImGuiCond.FirstUseEver;
		base.SizeConstraints = new WindowSizeConstraints
		{
			MinimumSize = new Vector2(700f, 500f),
			MaximumSize = new Vector2(float.MaxValue, float.MaxValue)
		};
	}

	public override void DrawContent()
	{
		_headerComponent.Draw(delegate(bool isOpen)
		{
			base.IsOpen = isOpen;
		});
		DrawChangelogEntries();
		ChangelogFooterComponent.Draw(delegate
		{
			MarkAllAsRead();
			base.IsOpen = false;
		});
		ImDrawListPtr windowDrawList = ImGui.GetWindowDrawList();
		Vector2 windowPos = ImGui.GetWindowPos();
		Vector2 windowSize = ImGui.GetWindowSize();
		windowDrawList.AddRect(windowPos, windowPos + windowSize, ImGui.ColorConvertFloat4ToU32(new Vector4(0.65f, 0.55f, 0.85f, 0.3f)), 0f, ImDrawFlags.None, 2f);
	}

	public override void OnOpen()
	{
		base.OnOpen();
		_windowOpenCount++;
		_hasSetInitialState = false;
		_headerAnimationTime = 0f;
		_headerComponent.Reset();
	}

	private void DrawChangelogEntries()
	{
		_headerAnimationTime += ImGui.GetIO().DeltaTime;
		using (ImRaii.PushColor(ImGuiCol.ScrollbarBg, new Vector4(0.1f, 0.08f, 0.14f, 0.6f)))
		{
			using (ImRaii.PushColor(ImGuiCol.ScrollbarGrab, new Vector4(0.55f, 0.45f, 0.75f, 0.4f)))
			{
				using (ImRaii.PushColor(ImGuiCol.ScrollbarGrabHovered, new Vector4(0.65f, 0.55f, 0.85f, 0.6f)))
				{
					using (ImRaii.PushColor(ImGuiCol.ScrollbarGrabActive, new Vector4(0.75f, 0.55f, 0.95f, 0.8f)))
					{
						float num = ImGui.GetFrameHeightWithSpacing() + ImGui.GetStyle().ItemSpacing.Y * 2f;
						using ImRaii.IEndObject endObject = ImRaii.Child("ChangelogScroll", new Vector2(0f, 0f - num), border: false, ImGuiWindowFlags.NoScrollbar);
						if (!endObject)
						{
							return;
						}
						using ImRaii.IEndObject endObject2 = ImRaii.Child("ChangelogScrollInner", Vector2.Zero, border: false);
						if (!endObject2)
						{
							return;
						}
						List<ChangelogEntry> changelogs = ChangelogData.Changelogs;
						ChangelogEntry changelogEntry = changelogs.FirstOrDefault();
						if (changelogs.Count == 0)
						{
							ImGui.SetCursorPosY(ImGui.GetCursorPosY() + 40f);
							Vector2 vector = ImGui.CalcTextSize("No changelog entries available.");
							ImGui.SetCursorPosX((ImGui.GetContentRegionAvail().X - vector.X) * 0.5f);
							ImGui.TextDisabled("No changelog entries available.");
							return;
						}
						ChangelogEntryComponent changelogEntryComponent = new ChangelogEntryComponent(_configuration, _windowOpenCount, _headerAnimationTime);
						foreach (ChangelogEntry item in changelogs)
						{
							changelogEntryComponent.Draw(item, item == changelogEntry, _hasSetInitialState);
							Vector2 cursorScreenPos = ImGui.GetCursorScreenPos();
							float num2 = ImGui.GetContentRegionAvail().X * 0.5f;
							float num3 = (ImGui.GetContentRegionAvail().X - num2) * 0.5f;
							ImGui.GetWindowDrawList().AddLine(cursorScreenPos + new Vector2(num3, 0f), cursorScreenPos + new Vector2(num3 + num2, 0f), ImGui.ColorConvertFloat4ToU32(new Vector4(0.55f, 0.45f, 0.75f, 0.1f)), 1f);
							ImGui.SetCursorPosY(ImGui.GetCursorPosY() + 4f);
						}
						_hasSetInitialState = true;
					}
				}
			}
		}
	}

	private void MarkAllAsRead()
	{
		string text = ChangelogData.Changelogs.FirstOrDefault()?.Version;
		if (text != null)
		{
			_configuration.LastViewedChangelogVersion = text;
			_pluginInterface.SavePluginConfig(_configuration);
		}
	}
}