//Demo executable based on GLFW
#define IMGUI_IMPLEMENTATION
#define GL_SILENCE_DEPRECATION

#include "unityBuild.h"
#include "../filepicker.hpp"

static void glfw_error_callback(int error, const char* description) {
    fprintf(stderr, "Glfw Error %d: %s\n", error, description);
}

int main(int, char**) {
    // Setup window
    glfwSetErrorCallback(glfw_error_callback);
    if (!glfwInit())
        return 1;

    // Decide GL+GLSL versions
#if defined(IMGUI_IMPL_OPENGL_ES2)
    // GL ES 2.0 + GLSL 100
    const char* glsl_version = "#version 100";
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
    glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
#elif defined(__APPLE__)
    // GL 3.2 + GLSL 150
    const char* glsl_version = "#version 150";
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // Required on Mac
#else
    // GL 3.0 + GLSL 130
    const char* glsl_version = "#version 130";
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
    //glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
    //glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // 3.0+ only
#endif

    // Create window with graphics context
    GLFWwindow* window = glfwCreateWindow(1280, 720, "File Picker Demo", NULL, NULL);
    if (window == NULL)
        return 1;
    glfwMakeContextCurrent(window);
    glfwSwapInterval(1); // Enable vsync

    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;

    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsLight();

    // Setup Platform/Renderer backends
    ImGui_ImplGlfw_InitForOpenGL(window, true);
    ImGui_ImplOpenGL3_Init(glsl_version);
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);

	//
	bool debugDirectory = true;
	bool debugVolume    = true;
	bool debugExtension = true;
	bool debugLogic     = true;

    // Our state
	char path[MAX_PATH * 4] = "";// = malloc(MAX_PATH * sizeof(char));
	int debugVerbosity = fp::DebugVerbosity::DIRECTORY | fp::DebugVerbosity::VOLUME | fp::DebugVerbosity::EXTENSION | fp::DebugVerbosity::LOGIC;
	bool windowOpen = true;
	bool memoryFreed = true;
	
    // Main loop
    while (!glfwWindowShouldClose(window)) {
        // Poll and handle events (inputs, window resize, etc.)
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        glfwPollEvents();

        // Start the Dear ImGui frame
        ImGui_ImplOpenGL3_NewFrame();
        ImGui_ImplGlfw_NewFrame();
        ImGui::NewFrame();

        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        
		fp::setDebugInfo(debugVerbosity);
		if(windowOpen)
			fp::renderFilePicker(&path[0], &windowOpen, &memoryFreed, 0);
		else if(!memoryFreed)
			fp::freeResources(&memoryFreed);

		//if (show_demo_window)
		ImGui::SetNextWindowSize(ImVec2(500.0f, 500.0f));
		ImGui::Begin("Values", NULL, 0);
		ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f); 
		ImGui::PopStyleVar(1);
		ImGui::Text(path);
		// debugVerbosity = DEBUG_DIRECTORY | DEBUG_EXTENSION;
// debugVerbosity &= ~DEBUG_DIRECTORY; 
// if (debugVerbosity & (DEBUG_DIRECTORY | DEBUG_EXTENSION)); 
		ImGui::Text("Debug verbosity");
		ImGui::Checkbox("Directory"     , &debugDirectory);
		ImGui::Checkbox("Volume"        , &debugVolume   );
		ImGui::Checkbox("Extension"     , &debugExtension);
		ImGui::Checkbox("Logic"         , &debugLogic    );
		debugVerbosity = (debugDirectory) ? debugVerbosity | fp::DIRECTORY : debugVerbosity& ~fp::DIRECTORY;
		debugVerbosity = (debugVolume) ? debugVerbosity | fp::VOLUME : debugVerbosity& ~fp::VOLUME;
		debugVerbosity = (debugExtension) ? debugVerbosity | fp::EXTENSION : debugVerbosity& ~fp::EXTENSION;
		debugVerbosity = (debugLogic) ? debugVerbosity | fp::LOGIC : debugVerbosity& ~fp::LOGIC;

		//fp::DebugVerbosity::DIRECTORY | fp::DebugVerbosity::VOLUME | fp::DebugVerbosity::EXTENSION | fp::DebugVerbosity::LOGIC;
		if (!windowOpen)
		if(ImGui::Button("Open file picker")) {
			windowOpen = !windowOpen;
		}
		//ImGui::Text(std::to_string(state).c_str());
		//ImGui::Text(state);
		ImGui::End();
        //ImGui::ShowDemoWindow(&show_demo_window);
				
        // Rendering
        ImGui::Render();
        int display_w, display_h;
        glfwGetFramebufferSize(window, &display_w, &display_h);
        glViewport(0, 0, display_w, display_h);
        glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
        glClear(GL_COLOR_BUFFER_BIT);
        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
		ImGui::EndFrame();
        glfwSwapBuffers(window);
    }

    // Cleanup
    ImGui_ImplOpenGL3_Shutdown();
    ImGui_ImplGlfw_Shutdown();
    ImGui::DestroyContext();

    glfwDestroyWindow(window);
    glfwTerminate();

    return 0;
}