ConfigWindow.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Numerics;
using Dalamud.Interface.Internal;
using Dalamud.Interface.Utility;
using Dalamud.Interface.Utility.Raii;
using ImGuiNET;

namespace SimpleTweaksPlugin; 

public class ConfigWindow : SimpleWindow {
    public ConfigWindow() : base("Simple Tweaks Config") {
        Size = new Vector2(600, 400);
        SizeConstraints = new WindowSizeConstraints() {
            MinimumSize = new Vector2(600, 200),
            MaximumSize = new Vector2(float.MaxValue, float.MaxValue),
        };
        SizeCondition = ImGuiCond.FirstUseEver;
    }

    private DateTime? easterDate;

    private DateTime EasterDate {
        get {
            if (easterDate != null) return easterDate.Value;
            var year = DateTime.Now.Year + 1;
            var a = year%19;
            var b = year/100;
            var c = (b - (b/4) - ((8*b + 13)/25) + (19*a) + 15)%30;
            var d = c - (c/28)*(1 - (c/28)*(29/(c + 1))*((21 - a)/11));
            var e = d - ((year + (year/4) + d + 2 - b + (b/4))%7);
            var month = 3 + ((e + 40)/44);
            var day = e + 28 - (31*(month/4));
            easterDate = new DateTime(year, month , day);
            return easterDate.Value;
        }
    }

    private DecorationType? randomDecorationType;

    public void FestiveDecorations() {
        if (SimpleTweaksPlugin.Plugin.PluginConfig.FestiveDecorationType == DecorationType.None) return;
        var dl = ImGui.GetWindowDrawList();
        var currentDate = DateTime.Now;
        var textures = new List<IDalamudTextureWrap?>();
        var decorationType = SimpleTweaksPlugin.Plugin.PluginConfig.FestiveDecorationType;
        if (decorationType == DecorationType.Random) {
            randomDecorationType ??= (DecorationType)new Random().Next(0, Enum.GetValues<DecorationType>().Max(v => (int)v) + 1);
            decorationType = randomDecorationType.Value;
        }
        
        switch (decorationType) {
            case DecorationType.Easter:
            case DecorationType.Auto when currentDate > EasterDate.AddDays(-4) && EasterDate < EasterDate.AddDays(4):
                // Easter
                textures.Add(Service.TextureProvider.GetTextureFromGame("ui/icon/080000/080110_hr1.tex"));
                textures.Add(Service.TextureProvider.GetTextureFromGame("ui/icon/080000/080131_hr1.tex"));
                break;
            case DecorationType.Christmas:
            case DecorationType.Auto when currentDate is { Month: 12, Day: >= 20 and <= 28 }:
                textures.Add(Service.TextureProvider.GetTextureFromGame("ui/icon/080000/080106_hr1.tex"));
                var hat = Service.TextureProvider.GetTextureFromFile(new FileInfo(Path.Join(Service.PluginInterface.AssemblyLocation.Directory!.FullName, "Decorations", "xmashat.png")));
                if (hat != null) {
                    var dl2 = IsFocused ? ImGui.GetForegroundDrawList() : ImGui.GetBackgroundDrawList();
                    var hatPos = ImGui.GetWindowPos() - hat.Size * new Vector2(0.35f, 0.35f);
                    dl.AddImage(hat.ImGuiHandle, hatPos, hatPos + hat.Size, Vector2.Zero, Vector2.One, 0xAAFFFFFF);
                    dl2.AddImage(hat.ImGuiHandle, hatPos, hatPos + hat.Size, Vector2.Zero, Vector2.One, 0xAAFFFFFF);
                }
                
                break;
            case DecorationType.Valentines:
            case DecorationType.Auto when currentDate is { Month: 2, Day: >= 13 and <= 15 }:
                textures.Add(Service.TextureProvider.GetTextureFromGame("ui/icon/080000/080108_hr1.tex"));
                textures.Add(Service.TextureProvider.GetTextureFromGame("ui/icon/080000/080126_hr1.tex"));
                break;
            case DecorationType.Halloween:
            case DecorationType.Auto when currentDate is { Month: 10, Day: >= 30 }:
                textures.Add(Service.TextureProvider.GetTextureFromGame("ui/icon/080000/080103_hr1.tex"));
                break;
            case DecorationType.None:
            case DecorationType.Random:
            default:
                return;
        }
        
        if (textures.Count == 0) return;

        var width = textures.Max(s => s.Size.X);
        var height = textures.Max(s => s.Size.Y);
        var size = new Vector2(width, height) / 3 * ImGuiHelpers.GlobalScale;
        var center = ImGui.GetWindowPos() + ((ImGui.GetWindowSize() / 2) * Vector2.UnitX) + (ImGui.GetWindowSize() * Vector2.UnitY);
        var p = center - (size * Vector2.UnitX / 2) - (size * Vector2.UnitY * 0.85f);


        for (var i = 0; i < Math.Ceiling((ImGui.GetWindowSize() / 2).X) + 1; i++) {
            var texture = textures[i % textures.Count];
            if (texture == null || texture.ImGuiHandle == IntPtr.Zero) continue;
            if (i != 0) {
                var p1 = p - (size * Vector2.UnitX) * i;
                dl.AddImage(texture.ImGuiHandle, p1, p1 + size, Vector2.Zero, Vector2.One, 0x40FFFFFF);
                
                var p2 = p + (size * Vector2.UnitX) * i;
                dl.AddImage(texture.ImGuiHandle, p2, p2 + size, Vector2.Zero, Vector2.One, 0x40FFFFFF);
            } else {
                dl.AddImage(texture.ImGuiHandle, p, p + size, Vector2.Zero, Vector2.One, 0x40FFFFFF);
                
            }
        }
    }

    public override void Draw() {
        base.Draw();
        FestiveDecorations();

        var config = SimpleTweaksPlugin.Plugin.PluginConfig;

        if (config.AnalyticsOptOut == false && config.MetricsIdentifier?.Length != 64) {
            ImGui.SetWindowFontScale(1.25f);
            ImGui.Text("Simple Tweaks Statistics Collection");
            ImGui.SetWindowFontScale(1f);
            ImGui.Separator();
            
            
            ImGui.TextWrapped("" +
                              "Simple tweaks now collects statistics of how many people have each tweak enabled. " +
                              "This allows me (Caraxi) to get a general idea of which tweaks are actually being used and give some kind of priority to adding additional features with the same ideas. " +
                              "By allowing collection an anonymous list of your enabled tweaks will be collected and stored on my server. \n\n" + 
                              "You may opt out of this collection now and no information will be sent. You may also choose to opt back in at a later date in the simple tweaks config.");

            
            ImGui.Dummy(new Vector2(20) * ImGuiHelpers.GlobalScale);

            using (ImRaii.PushColor(ImGuiCol.Button, new Vector4(0.2f, 0.7f, 0.3f, 0.8f))) 
            using (ImRaii.PushColor(ImGuiCol.ButtonActive, new Vector4(0.2f, 0.7f, 0.3f, 1f))) 
            using (ImRaii.PushColor(ImGuiCol.ButtonHovered, new Vector4(0.2f, 0.7f, 0.3f, 0.9f))) 
            {
                if (ImGui.Button("Allow Anonymous Statistic Collection", new Vector2(ImGui.GetContentRegionAvail().X, 40 * ImGuiHelpers.GlobalScale))) {
                    MetricsService.ReportMetrics(true);
                }
            }
            
            ImGui.Spacing();
            
            
            using (ImRaii.PushColor(ImGuiCol.Button, new Vector4(0.7f, 0.2f, 0.3f, 0.8f))) 
            using (ImRaii.PushColor(ImGuiCol.ButtonActive, new Vector4(0.7f, 0.2f, 0.3f, 1f))) 
            using (ImRaii.PushColor(ImGuiCol.ButtonHovered, new Vector4(0.7f, 0.2f, 0.3f, 0.9f))) 
            {
                if (ImGui.Button("Disable Anonymous Statistic Collection", new Vector2(ImGui.GetContentRegionAvail().X, 25 * ImGuiHelpers.GlobalScale))) {
                    config.AnalyticsOptOut = true;
                    config.Save();
                }

            }
            
            ImGui.Dummy(new Vector2(20) * ImGuiHelpers.GlobalScale);
            
            ImGui.Separator();
            
            ImGui.Dummy(new Vector2(20) * ImGuiHelpers.GlobalScale);
            
            if (ImGui.Button("Open Changelog")) {
                SimpleTweaksPlugin.Plugin.ChangelogWindow.IsOpen = true;
            }
            
            
            
            return;
        }
        
        
        SimpleTweaksPlugin.Plugin.PluginConfig.DrawConfigUI();
    }

    public override void OnClose() {
        base.OnClose();
        randomDecorationType = null;
        SimpleTweaksPlugin.Plugin.SaveAllConfig();
        SimpleTweaksPlugin.Plugin.PluginConfig.ClearSearch();
        MetricsService.ReportMetrics(false);
    }
}