/******************************************************************************
*	File		-	component_guis.cpp
*	Author		-	Joey Pollack
*	Date		-	2022/06/01 (y/m/d)
*	Mod Date	-	2022/06/01 (y/m/d)
*	Description	-	Functions to render component editing GUIs
******************************************************************************/

#include "component_guis.h"
#include <editor/editor.h>
#include <utils/logger.h>
#include <dearimgui/imgui.h>
#include <dearimgui/imgui_internal.h>

namespace lunarium { namespace editor
{
    /////////////////////////////////////////////////////////////////////
    //				HELPERS
    /////////////////////////////////////////////////////////////////////

    /// This function was taken from the Hazel engine written by Cherno!
    /// https://github.com/TheCherno/Hazel/blob/master/Hazelnut/src/Panels/SceneHierarchyPanel.cpp
    static void DrawVec3Control(const std::string& label, glm::vec3& values, float resetValue = 0.0f, float columnWidth = 100.0f)
    {
        ImGuiIO& io = ImGui::GetIO();
		auto boldFont = io.Fonts->Fonts[0];

		ImGui::PushID(label.c_str());

		ImGui::Columns(2);
		ImGui::SetColumnWidth(0, columnWidth);
		ImGui::Text(label.c_str());
		ImGui::NextColumn();

		ImGui::PushMultiItemsWidths(3, ImGui::CalcItemWidth());
		ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2{ 0, 0 });

		float lineHeight = GImGui->Font->FontSize + GImGui->Style.FramePadding.y * 2.0f;
		ImVec2 buttonSize = { lineHeight + 3.0f, lineHeight };

		ImGui::PushStyleColor(ImGuiCol_Button, ImVec4{ 0.8f, 0.1f, 0.15f, 1.0f });
		ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4{ 0.9f, 0.2f, 0.2f, 1.0f });
		ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4{ 0.8f, 0.1f, 0.15f, 1.0f });
		ImGui::PushFont(boldFont);
		if (ImGui::Button("X", buttonSize))
			values.x = resetValue;
		ImGui::PopFont();
		ImGui::PopStyleColor(3);

		ImGui::SameLine();
		ImGui::DragFloat("##X", &values.x, 0.1f, 0.0f, 0.0f, "%.2f");
		ImGui::PopItemWidth();
		ImGui::SameLine();

		ImGui::PushStyleColor(ImGuiCol_Button, ImVec4{ 0.2f, 0.7f, 0.2f, 1.0f });
		ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4{ 0.3f, 0.8f, 0.3f, 1.0f });
		ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4{ 0.2f, 0.7f, 0.2f, 1.0f });
		ImGui::PushFont(boldFont);
		if (ImGui::Button("Y", buttonSize))
			values.y = resetValue;
		ImGui::PopFont();
		ImGui::PopStyleColor(3);

		ImGui::SameLine();
		ImGui::DragFloat("##Y", &values.y, 0.1f, 0.0f, 0.0f, "%.2f");
		ImGui::PopItemWidth();
		ImGui::SameLine();

		ImGui::PushStyleColor(ImGuiCol_Button, ImVec4{ 0.1f, 0.25f, 0.8f, 1.0f });
		ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImVec4{ 0.2f, 0.35f, 0.9f, 1.0f });
		ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImVec4{ 0.1f, 0.25f, 0.8f, 1.0f });
		ImGui::PushFont(boldFont);
		if (ImGui::Button("Z", buttonSize))
			values.z = resetValue;
		ImGui::PopFont();
		ImGui::PopStyleColor(3);

		ImGui::SameLine();
		ImGui::DragFloat("##Z", &values.z, 0.1f, 0.0f, 0.0f, "%.2f");
		ImGui::PopItemWidth();

		ImGui::PopStyleVar();

		ImGui::Columns(1);

		ImGui::PopID();
    }

    void CompGui::RenderTagComp(TagComponent& comp)
    {
        const int BUFFER_SIZE = 256;
        static char buffer[BUFFER_SIZE] = "";
        ImGui::Text("Tag:");
        ImGui::SameLine();
        strcpy(buffer, comp.Info.c_str());
        ImGui::InputText("##Tag", buffer, BUFFER_SIZE);
        comp.Info = buffer;
    }

    /// This code also taken from the Hazel engine
    /// https://github.com/TheCherno/Hazel/blob/master/Hazelnut/src/Panels/SceneHierarchyPanel.cpp
    void CompGui::RenderTransformComp(TransformComponent& comp)
    {
        DrawVec3Control("Translation", comp.Position);
        glm::vec3 rotation = glm::degrees(comp.Rotation);
        DrawVec3Control("Rotation", rotation);
        comp.Rotation = glm::radians(rotation);
        DrawVec3Control("Scale", comp.Scale, 1.0f);
    }
}}