using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using Dalamud.Bindings.ImGui;
using Dalamud.Interface;
using Dalamud.Interface.Utility;
using Dalamud.Interface.Utility.Raii;
using Dalamud.Plugin;
using Microsoft.Extensions.Logging;
using Questionable.Windows.Setup;

namespace Questionable.Windows;

internal sealed class OneTimeSetupWindow : ThemedWindow
{
	private readonly IReadOnlyList<ISetupStep> _steps;

	private readonly Configuration _configuration;

	private readonly IDalamudPluginInterface _pluginInterface;

	private readonly ILogger<OneTimeSetupWindow> _logger;

	private int _currentIndex;

	public OneTimeSetupWindow(WelcomeStep welcomeStep, PluginsStep pluginsStep, EssentialSettingsStep essentialSettingsStep, ReadyStep readyStep, Configuration configuration, IDalamudPluginInterface pluginInterface, ILogger<OneTimeSetupWindow> logger)
		: base("Questionable Setup###QuestionableOneTimeSetup", ImGuiWindowFlags.NoCollapse | ImGuiWindowFlags.AlwaysAutoResize | ImGuiWindowFlags.NoSavedSettings, forceMainWindow: true)
	{
		_steps = new global::_003C_003Ez__ReadOnlyArray<ISetupStep>(new ISetupStep[4] { welcomeStep, pluginsStep, essentialSettingsStep, readyStep });
		_configuration = configuration;
		_pluginInterface = pluginInterface;
		_logger = logger;
		base.RespectCloseHotkey = false;
		base.ShowCloseButton = false;
		base.AllowPinning = false;
		base.AllowClickthrough = false;
		base.IsOpen = !_configuration.IsPluginSetupComplete();
		_logger.LogDebug("One-time setup needed: {IsOpen}", base.IsOpen);
	}

	public override void OnOpen()
	{
		_currentIndex = 0;
	}

	public override void DrawContent()
	{
		List<ISetupStep> list = _steps.Where((ISetupStep s) => s.ShouldShow()).ToList();
		if (list.Count != 0)
		{
			_currentIndex = Math.Clamp(_currentIndex, 0, list.Count - 1);
			ISetupStep setupStep = list[_currentIndex];
			ImU8String text = new ImU8String(9, 2);
			text.AppendLiteral("Step ");
			text.AppendFormatted(_currentIndex + 1);
			text.AppendLiteral(" of ");
			text.AppendFormatted(list.Count);
			ImGui.TextColored(in UiThemeUtils.DimTextColor, text);
			ImGui.SameLine();
			DrawStepDots(list.Count);
			UiThemeUtils.SectionHeader(setupStep.Title);
			var (contentStartPos, availableWidth, drawList) = UiThemeUtils.BeginCard();
			setupStep.Draw();
			UiThemeUtils.EndCard(contentStartPos, availableWidth, drawList);
			UiThemeUtils.SectionSpacing();
			DrawFooter(list.Count, setupStep);
		}
	}

	private void DrawStepDots(int visibleCount)
	{
		float num = 3f * ImGuiHelpers.GlobalScale;
		float num2 = 12f * ImGuiHelpers.GlobalScale;
		float textLineHeight = ImGui.GetTextLineHeight();
		ImDrawListPtr windowDrawList = ImGui.GetWindowDrawList();
		Vector2 cursorScreenPos = ImGui.GetCursorScreenPos();
		float y = cursorScreenPos.Y + textLineHeight / 2f;
		uint col = ImGui.ColorConvertFloat4ToU32(UiThemeUtils.AccentColor);
		uint col2 = ImGui.ColorConvertFloat4ToU32(UiThemeUtils.MutedTextColor);
		for (int i = 0; i < visibleCount; i++)
		{
			Vector2 center = new Vector2(cursorScreenPos.X + num + (float)i * num2, y);
			if (i == _currentIndex)
			{
				windowDrawList.AddCircleFilled(center, num, col);
			}
			else
			{
				windowDrawList.AddCircle(center, num, col2, 0, 1f);
			}
		}
		ImGui.Dummy(new Vector2(num * 2f + (float)(visibleCount - 1) * num2, textLineHeight));
	}

	private void DrawFooter(int visibleCount, ISetupStep current)
	{
		bool disabled = _currentIndex == 0;
		bool flag = _currentIndex == visibleCount - 1;
		using (ImRaii.Disabled(disabled))
		{
			if (UiThemeUtils.IconTextButton(FontAwesomeIcon.ArrowLeft, "Back", ButtonWidth(FontAwesomeIcon.ArrowLeft, "Back")))
			{
				_currentIndex--;
			}
		}
		ImGui.SameLine();
		if (flag)
		{
			using (ImRaii.Disabled(!current.CanAdvance))
			{
				using (ImRaii.PushColor(ImGuiCol.Button, UiThemeUtils.PlayButtonColor))
				{
					using (ImRaii.PushColor(ImGuiCol.ButtonHovered, UiThemeUtils.PlayButtonHover))
					{
						using (ImRaii.PushColor(ImGuiCol.ButtonActive, UiThemeUtils.PlayButtonActive))
						{
							using (ImRaii.PushColor(ImGuiCol.Text, UiThemeUtils.PlayButtonText))
							{
								if (UiThemeUtils.IconTextButton(FontAwesomeIcon.Check, "Finish Setup", ButtonWidth(FontAwesomeIcon.Check, "Finish Setup")))
								{
									_logger.LogDebug("Marking setup as complete");
									_configuration.MarkPluginSetupComplete();
									_pluginInterface.SavePluginConfig(_configuration);
									RequestClose();
								}
							}
						}
					}
				}
			}
		}
		else
		{
			using (ImRaii.Disabled(!current.CanAdvance))
			{
				if (UiThemeUtils.IconTextButton(FontAwesomeIcon.ArrowRight, "Next", ButtonWidth(FontAwesomeIcon.ArrowRight, "Next")))
				{
					_currentIndex++;
				}
			}
		}
		ImGui.SameLine();
		string text = (_configuration.IsPluginSetupComplete() ? "Close" : "Close window & don't enable Questionable");
		if (UiThemeUtils.IconTextButton(FontAwesomeIcon.Times, text, ButtonWidth(FontAwesomeIcon.Times, text)))
		{
			if (!_configuration.IsPluginSetupComplete())
			{
				_logger.LogWarning("Closing window without completing setup");
			}
			RequestClose();
		}
		static float ButtonWidth(FontAwesomeIcon icon, string text2)
		{
			float x;
			using (ImRaii.PushFont(UiBuilder.IconFont))
			{
				x = ImGui.CalcTextSize(icon.ToIconString()).X;
			}
			float x2 = ImGui.CalcTextSize(text2).X;
			return x + 6f + x2 + ImGui.GetStyle().FramePadding.X * 2f;
		}
	}
}