// inspiration: brio because it's style is fucking amazing

using Dalamud.Bindings.ImGui;
using LightlessSync.LightlessConfiguration;
using System.Numerics;

namespace LightlessSync.UI.Style
{
    internal static class MainStyle
    {
        private static LightlessConfigService? _config;
        public static void Init(LightlessConfigService config) => _config = config;
        public static bool ShouldUseTheme => _config?.Current.UseLightlessRedesign ?? false;

        private static bool _hasPushed;
        private static int _pushedColorCount;
        private static int _pushedStyleVarCount;

        public static void PushStyle()
        {
            if (_hasPushed)
                PopStyle();

            if (!ShouldUseTheme)
            {
                _hasPushed = false;
                return;
            }

            _hasPushed = true;
            _pushedColorCount = 0;
            _pushedStyleVarCount = 0;

            Push(ImGuiCol.Text, new Vector4(255, 255, 255, 255));
            Push(ImGuiCol.TextDisabled, new Vector4(128, 128, 128, 255));

            Push(ImGuiCol.WindowBg, new Vector4(23, 23, 23, 248));
            Push(ImGuiCol.ChildBg, new Vector4(23, 23, 23, 66));
            Push(ImGuiCol.PopupBg, new Vector4(23, 23, 23, 248));

            Push(ImGuiCol.Border, new Vector4(65, 65, 65, 255));
            Push(ImGuiCol.BorderShadow, new Vector4(0, 0, 0, 150));

            Push(ImGuiCol.FrameBg, new Vector4(40, 40, 40, 255));
            Push(ImGuiCol.FrameBgHovered, new Vector4(50, 50, 50, 255));
            Push(ImGuiCol.FrameBgActive, new Vector4(30, 30, 30, 255));

            Push(ImGuiCol.TitleBg, new Vector4(24, 24, 24, 232));
            Push(ImGuiCol.TitleBgActive, new Vector4(30, 30, 30, 255));
            Push(ImGuiCol.TitleBgCollapsed, new Vector4(27, 27, 27, 255));

            Push(ImGuiCol.MenuBarBg, new Vector4(36, 36, 36, 255));
            Push(ImGuiCol.ScrollbarBg, new Vector4(0, 0, 0, 0));
            Push(ImGuiCol.ScrollbarGrab, new Vector4(62, 62, 62, 255));
            Push(ImGuiCol.ScrollbarGrabHovered, new Vector4(70, 70, 70, 255));
            Push(ImGuiCol.ScrollbarGrabActive, new Vector4(70, 70, 70, 255));

            Push(ImGuiCol.CheckMark, UIColors.Get("LightlessPurple"));

            Push(ImGuiCol.SliderGrab, new Vector4(101, 101, 101, 255));
            Push(ImGuiCol.SliderGrabActive, new Vector4(123, 123, 123, 255));

            Push(ImGuiCol.Button, UIColors.Get("ButtonDefault"));
            Push(ImGuiCol.ButtonHovered, UIColors.Get("LightlessPurple"));
            Push(ImGuiCol.ButtonActive, UIColors.Get("LightlessPurpleActive"));

            Push(ImGuiCol.Header, new Vector4(0, 0, 0, 60));
            Push(ImGuiCol.HeaderHovered, new Vector4(0, 0, 0, 90));
            Push(ImGuiCol.HeaderActive, new Vector4(0, 0, 0, 120));

            Push(ImGuiCol.Separator, new Vector4(75, 75, 75, 121));
            Push(ImGuiCol.SeparatorHovered, UIColors.Get("LightlessPurple"));
            Push(ImGuiCol.SeparatorActive, UIColors.Get("LightlessPurpleActive"));

            Push(ImGuiCol.ResizeGrip, new Vector4(0, 0, 0, 0));
            Push(ImGuiCol.ResizeGripHovered, new Vector4(0, 0, 0, 0));
            Push(ImGuiCol.ResizeGripActive, UIColors.Get("LightlessPurpleActive"));

            Push(ImGuiCol.Tab, new Vector4(40, 40, 40, 255));
            Push(ImGuiCol.TabHovered, UIColors.Get("LightlessPurple"));
            Push(ImGuiCol.TabActive, UIColors.Get("LightlessPurpleActive"));
            Push(ImGuiCol.TabUnfocused, new Vector4(40, 40, 40, 255));
            Push(ImGuiCol.TabUnfocusedActive, UIColors.Get("LightlessPurpleActive"));

            Push(ImGuiCol.DockingPreview, UIColors.Get("LightlessPurpleActive"));
            Push(ImGuiCol.DockingEmptyBg, new Vector4(50, 50, 50, 255));

            Push(ImGuiCol.PlotLines, new Vector4(150, 150, 150, 255));

            Push(ImGuiCol.TableHeaderBg, new Vector4(48, 48, 48, 255));
            Push(ImGuiCol.TableBorderStrong, new Vector4(79, 79, 89, 255));
            Push(ImGuiCol.TableBorderLight, new Vector4(59, 59, 64, 255));
            Push(ImGuiCol.TableRowBg, new Vector4(0, 0, 0, 0));
            Push(ImGuiCol.TableRowBgAlt, new Vector4(255, 255, 255, 15));

            Push(ImGuiCol.TextSelectedBg, new Vector4(98, 75, 224, 255));
            Push(ImGuiCol.DragDropTarget, new Vector4(98, 75, 224, 255));

            Push(ImGuiCol.NavHighlight, new Vector4(98, 75, 224, 179));
            Push(ImGuiCol.NavWindowingDimBg, new Vector4(204, 204, 204, 51));
            Push(ImGuiCol.NavWindowingHighlight, new Vector4(204, 204, 204, 89));

            PushStyleVar(ImGuiStyleVar.WindowPadding, new Vector2(6, 6));
            PushStyleVar(ImGuiStyleVar.FramePadding, new Vector2(4, 3));
            PushStyleVar(ImGuiStyleVar.CellPadding, new Vector2(4, 4));
            PushStyleVar(ImGuiStyleVar.ItemSpacing, new Vector2(4, 4));
            PushStyleVar(ImGuiStyleVar.ItemInnerSpacing, new Vector2(4, 4));

            PushStyleVar(ImGuiStyleVar.IndentSpacing, 21.0f);
            PushStyleVar(ImGuiStyleVar.ScrollbarSize, 10.0f);
            PushStyleVar(ImGuiStyleVar.GrabMinSize, 20.0f);

            PushStyleVar(ImGuiStyleVar.WindowBorderSize, 1.5f);
            PushStyleVar(ImGuiStyleVar.ChildBorderSize, 1.5f);
            PushStyleVar(ImGuiStyleVar.PopupBorderSize, 1.5f);
            PushStyleVar(ImGuiStyleVar.FrameBorderSize, 0f);

            PushStyleVar(ImGuiStyleVar.WindowRounding, 7f);
            PushStyleVar(ImGuiStyleVar.ChildRounding, 4f);
            PushStyleVar(ImGuiStyleVar.FrameRounding, 4f);
            PushStyleVar(ImGuiStyleVar.PopupRounding, 4f);
            PushStyleVar(ImGuiStyleVar.ScrollbarRounding, 4f);
            PushStyleVar(ImGuiStyleVar.GrabRounding, 4f);
            PushStyleVar(ImGuiStyleVar.TabRounding, 4f);
        }

        public static void PopStyle()
        {
            if (!_hasPushed)
                return;

            if (_pushedStyleVarCount > 0)
                ImGui.PopStyleVar(_pushedStyleVarCount);
            if (_pushedColorCount > 0)
                ImGui.PopStyleColor(_pushedColorCount);

            _hasPushed = false;
            _pushedColorCount = 0;
            _pushedStyleVarCount = 0;
        }

        private static void Push(ImGuiCol col, Vector4 rgba)
        {
            if (rgba.X > 1f || rgba.Y > 1f || rgba.Z > 1f || rgba.W > 1f)
                rgba /= 255f;

            ImGui.PushStyleColor(col, rgba);
            _pushedColorCount++;
        }

        private static void Push(ImGuiCol col, uint packedRgba)
        {
            ImGui.PushStyleColor(col, packedRgba);
            _pushedColorCount++;
        }

        private static void PushStyleVar(ImGuiStyleVar var, float value)
        {
            ImGui.PushStyleVar(var, value);
            _pushedStyleVarCount++;
        }

        private static void PushStyleVar(ImGuiStyleVar var, Vector2 value)
        {
            ImGui.PushStyleVar(var, value);
            _pushedStyleVarCount++;
        }
    }
}