using System;
using System.Globalization;
using System.Linq;
using System.Numerics;
using Dalamud.Bindings.ImGui;
using Dalamud.Interface;
using Dalamud.Interface.Utility.Raii;
using Questionable.Model.Changelog;

namespace Questionable.Windows.ChangelogComponents;

internal sealed class ChangelogEntryComponent
{
	private readonly Configuration _configuration;

	private readonly int _windowOpenCount;

	private readonly float _animationTime;

	public ChangelogEntryComponent(Configuration configuration, int windowOpenCount, float animationTime)
	{
		_configuration = configuration;
		_windowOpenCount = windowOpenCount;
		_animationTime = animationTime;
	}

	public void Draw(ChangelogEntry changelog, bool isLatest, bool hasSetInitialState)
	{
		bool isNew = changelog.IsNewVersion(_configuration.LastViewedChangelogVersion);
		ImGui.GetWindowDrawList();
		string text = changelog.ReleaseDate.ToString("MMMM dd, yyyy", CultureInfo.InvariantCulture);
		if (!hasSetInitialState)
		{
			ImGui.SetNextItemOpen(isLatest, ImGuiCond.Always);
		}
		string text2 = "v" + changelog.Version;
		float fontSize = ImGui.GetFontSize();
		float num = fontSize;
		Vector2 versionSize;
		using (ImRaii.PushFont(UiBuilder.MonoFont))
		{
			versionSize = ImGui.CalcTextSize(text2);
		}
		Vector2 dateSize = ImGui.CalcTextSize(text);
		float scaledIconFontSize = fontSize * 0.85f;
		float x = ImGui.GetContentRegionAvail().X;
		bool flag;
		using (ImRaii.PushColor(ImGuiCol.Header, new Vector4(0.2f, 0.18f, 0.25f, 0.6f)))
		{
			using (ImRaii.PushColor(ImGuiCol.HeaderHovered, new Vector4(0.3f, 0.25f, 0.35f, 0.8f)))
			{
				using (ImRaii.PushColor(ImGuiCol.HeaderActive, new Vector4(0.25f, 0.22f, 0.3f, 1f)))
				{
					Vector2 cursorPos = ImGui.GetCursorPos();
					Vector2 cursorScreenPos = ImGui.GetCursorScreenPos();
					ImU8String label = new ImU8String(19, 2);
					label.AppendLiteral("###header_");
					label.AppendFormatted(changelog.Version);
					label.AppendLiteral("_changes_");
					label.AppendFormatted(_windowOpenCount);
					flag = ImGui.CollapsingHeader(label);
					Vector2 cursorPos2 = ImGui.GetCursorPos();
					float verticalOffset = (cursorPos2.Y - cursorPos.Y - num) * 0.5f - 1f;
					DrawVersionText(text2, versionSize, cursorPos, verticalOffset);
					DrawNewBadge(isNew, cursorScreenPos, x);
					DrawDateWithIcon(text, dateSize, scaledIconFontSize, cursorScreenPos, cursorPos, x, verticalOffset, fontSize);
					ImGui.SetCursorPos(cursorPos2);
				}
			}
		}
		if (flag)
		{
			DrawChangelogContent(changelog);
		}
	}

	private static void DrawVersionText(string versionText, Vector2 versionSize, Vector2 headerStartPos, float verticalOffset)
	{
		float x = headerStartPos.X + ImGui.GetStyle().FramePadding.X * 2f + 20f;
		using (ImRaii.PushFont(UiBuilder.MonoFont))
		{
			ImGui.SetCursorPos(new Vector2(x, headerStartPos.Y + verticalOffset));
			ImGui.TextColored(new Vector4(0.95f, 0.95f, 0.95f, 1f), versionText);
		}
	}

	private void DrawNewBadge(bool isNew, Vector2 headerStartScreenPos, float availableWidth)
	{
		if (isNew)
		{
			float num = 2.5f;
			float w = (MathF.Sin(_animationTime * num) + 1f) * 0.5f * 0.15f;
			float frameHeight = ImGui.GetFrameHeight();
			float frameRounding = ImGui.GetStyle().FrameRounding;
			ImGui.GetWindowDrawList().AddRectFilled(headerStartScreenPos, headerStartScreenPos + new Vector2(availableWidth, frameHeight), ImGui.ColorConvertFloat4ToU32(new Vector4(0.5f, 1f, 0.6f, w)), frameRounding);
		}
	}

	private static void DrawDateWithIcon(string dateText, Vector2 dateSize, float scaledIconFontSize, Vector2 headerStartScreenPos, Vector2 headerStartPos, float availableWidth, float verticalOffset, float defaultFontSize)
	{
		string text = FontAwesomeIcon.Calendar.ToIconString();
		Vector2 vector;
		using (ImRaii.PushFont(UiBuilder.IconFont))
		{
			vector = ImGui.CalcTextSize(text);
		}
		float num = vector.X * (scaledIconFontSize / defaultFontSize);
		float num2 = num + 4f + dateSize.X;
		float num3 = availableWidth - num2 - 12f;
		Vector2 pos = headerStartScreenPos + new Vector2(num3, verticalOffset);
		ImGui.GetWindowDrawList().AddText(UiBuilder.IconFont, scaledIconFontSize, pos, ImGui.ColorConvertFloat4ToU32(new Vector4(0.65f, 0.6f, 0.8f, 1f)), text);
		ImGui.SetCursorPos(new Vector2(num3 + num + 4f, headerStartPos.Y + verticalOffset));
		ImGui.TextColored(new Vector4(0.95f, 0.95f, 1f, 1f), dateText);
	}

	private static void DrawChangelogContent(ChangelogEntry changelog)
	{
		Vector2 cursorPos = ImGui.GetCursorPos();
		Vector2 vector = new Vector2(16f, 8f);
		float x = ImGui.GetContentRegionAvail().X;
		IOrderedEnumerable<IGrouping<EChangeCategory, ChangeEntry>> orderedEnumerable = from changeEntry in changelog.Changes
			group changeEntry by changeEntry.Category into g
			orderby g.Key
			select g;
		ImDrawListPtr windowDrawList = ImGui.GetWindowDrawList();
		windowDrawList.ChannelsSplit(2);
		windowDrawList.ChannelsSetCurrent(1);
		float baseX = cursorPos.X + vector.X;
		ImGui.SetCursorPos(cursorPos + new Vector2(vector.X, vector.Y));
		bool flag = true;
		foreach (IGrouping<EChangeCategory, ChangeEntry> item in orderedEnumerable)
		{
			if (!flag)
			{
				ImGui.Spacing();
			}
			ChangelogCategoryComponent.DrawCategoryGroup(item.Key, item.ToList(), baseX);
			flag = false;
		}
		Vector2 cursorPos2 = ImGui.GetCursorPos();
		windowDrawList.ChannelsSetCurrent(0);
		ImGui.SetCursorPos(cursorPos);
		Vector2 cursorScreenPos = ImGui.GetCursorScreenPos();
		ImGui.SetCursorPos(cursorPos2 + new Vector2(0f, vector.Y));
		Vector2 cursorScreenPos2 = ImGui.GetCursorScreenPos();
		windowDrawList.AddRectFilled(cursorScreenPos, new Vector2(cursorScreenPos.X + x, cursorScreenPos2.Y), ImGui.ColorConvertFloat4ToU32(new Vector4(0.1f, 0.08f, 0.14f, 0.5f)), 4f);
		windowDrawList.AddRect(cursorScreenPos, new Vector2(cursorScreenPos.X + x, cursorScreenPos2.Y), ImGui.ColorConvertFloat4ToU32(new Vector4(0.55f, 0.45f, 0.75f, 0.15f)), 4f, ImDrawFlags.None, 1f);
		windowDrawList.ChannelsMerge();
		ImGui.SetCursorPos(new Vector2(cursorPos.X, cursorPos2.Y + vector.Y + 2f));
	}
}