#include <td/display/ImGuiTheme.h>

#include <imgui.h>

namespace td {

void LoadTheme() {

	static const bool bStyleDark_ = true;
	static const float alpha_ = 0.8f;

	ImGuiStyle& style = ImGui::GetStyle();

	// light style from Pacôme Danhiez (user itamago) https://github.com/ocornut/imgui/pull/511#issuecomment-175719267
	style.Alpha = 1.0f;
	style.FrameRounding = 3.0f;
	style.Colors[ImGuiCol_Text] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
	style.Colors[ImGuiCol_TextDisabled] = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
	style.Colors[ImGuiCol_WindowBg] = ImVec4(0.94f, 0.94f, 0.94f, 0.94f);
	// style.Colors[ImGuiCol_ChildWindowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
	style.Colors[ImGuiCol_PopupBg] = ImVec4(1.00f, 1.00f, 1.00f, 0.94f);
	style.Colors[ImGuiCol_Border] = ImVec4(0.00f, 0.00f, 0.00f, 0.39f);
	style.Colors[ImGuiCol_BorderShadow] = ImVec4(1.00f, 1.00f, 1.00f, 0.10f);
	style.Colors[ImGuiCol_FrameBg] = ImVec4(1.00f, 1.00f, 1.00f, 0.94f);
	style.Colors[ImGuiCol_FrameBgHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
	style.Colors[ImGuiCol_FrameBgActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
	style.Colors[ImGuiCol_TitleBg] = ImVec4(0.96f, 0.96f, 0.96f, 1.00f);
	style.Colors[ImGuiCol_TitleBgCollapsed] = ImVec4(1.00f, 1.00f, 1.00f, 0.51f);
	style.Colors[ImGuiCol_TitleBgActive] = ImVec4(0.82f, 0.82f, 0.82f, 1.00f);
	style.Colors[ImGuiCol_MenuBarBg] = ImVec4(0.86f, 0.86f, 0.86f, 1.00f);
	style.Colors[ImGuiCol_ScrollbarBg] = ImVec4(0.98f, 0.98f, 0.98f, 0.53f);
	style.Colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.69f, 0.69f, 0.69f, 1.00f);
	style.Colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.59f, 0.59f, 0.59f, 1.00f);
	style.Colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.49f, 0.49f, 0.49f, 1.00f);
	// style.Colors[ImGuiCol_ComboBg] = ImVec4(0.86f, 0.86f, 0.86f, 0.99f);
	style.Colors[ImGuiCol_CheckMark] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
	style.Colors[ImGuiCol_SliderGrab] = ImVec4(0.24f, 0.52f, 0.88f, 1.00f);
	style.Colors[ImGuiCol_SliderGrabActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
	style.Colors[ImGuiCol_Button] = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
	style.Colors[ImGuiCol_ButtonHovered] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
	style.Colors[ImGuiCol_ButtonActive] = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);
	style.Colors[ImGuiCol_Header] = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);
	style.Colors[ImGuiCol_HeaderHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);
	style.Colors[ImGuiCol_HeaderActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
	// style.Colors[ImGuiCol_Column] = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
	// style.Colors[ImGuiCol_ColumnHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.78f);
	// style.Colors[ImGuiCol_ColumnActive] = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
	style.Colors[ImGuiCol_ResizeGrip] = ImVec4(1.00f, 1.00f, 1.00f, 0.50f);
	style.Colors[ImGuiCol_ResizeGripHovered] = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
	style.Colors[ImGuiCol_ResizeGripActive] = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
	// style.Colors[ImGuiCol_CloseButton] = ImVec4(0.59f, 0.59f, 0.59f, 0.50f);
	// style.Colors[ImGuiCol_CloseButtonHovered] = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
	// style.Colors[ImGuiCol_CloseButtonActive] = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
	style.Colors[ImGuiCol_PlotLines] = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
	style.Colors[ImGuiCol_PlotLinesHovered] = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
	style.Colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
	style.Colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
	style.Colors[ImGuiCol_TextSelectedBg] = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
	// style.Colors[ImGuiCol_ModalWindowDarkening] = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);

	if (bStyleDark_) {
		for (int i = 0; i <= ImGuiCol_COUNT; i++) {
			ImVec4& col = style.Colors[i];
			float H, S, V;
			ImGui::ColorConvertRGBtoHSV(col.x, col.y, col.z, H, S, V);

			if (S < 0.1f) {
				V = 1.0f - V;
			}
			ImGui::ColorConvertHSVtoRGB(H, S, V, col.x, col.y, col.z);
			if (col.w < 1.00f) {
				col.w *= alpha_;
			}
		}
	} else {
		for (int i = 0; i <= ImGuiCol_COUNT; i++) {
			ImVec4& col = style.Colors[i];
			if (col.w < 1.00f) {
				col.x *= alpha_;
				col.y *= alpha_;
				col.z *= alpha_;
				col.w *= alpha_;
			}
		}
	}
}

}  // namespace td