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// Dear ImGui: standalone example application for SDL2 + SDL_Renderer
// (SDL is a cross-platform general purpose library for handling windows, inputs,
// OpenGL/Vulkan/Metal graphics context creation, etc.)

// Learn about Dear ImGui:
// - FAQ https://dearimgui.com/faq
// - Getting Started https://dearimgui.com/getting-started
// - Documentation https://dearimgui.com/docs (same as your local docs/ folder).
// - Introduction, links and more at the top of imgui.cpp

// Important to understand: SDL_Renderer is an _optional_ component of SDL2.
// For a multi-platform app consider using e.g. SDL+DirectX on Windows and
// SDL+OpenGL on Linux/OSX.

#include <cstdio>
#include <cstdint>
#include <iostream>
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//#include <ostream>
#include <map>
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#include <string>
#include <vector>

#include <SDL.h>

#include "imgui.h"
#include "imgui_impl_sdl2.h"
#include "imgui_impl_sdlrenderer2.h"

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#include "Catalog.h"

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#if !SDL_VERSION_ATLEAST(2,0,17)
#error This backend requires SDL 2.0.17+ because of SDL_RenderGeometry() function
#endif

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const std::string APP_NAME("pwmgr");

const std::string VERSION("v0.0.1");

const std::string BOLD{"\033[1m"};
const std::string ENDC{"\033[0m"};
const std::string RED{"\033[31m"};
const std::string YELLOW{"\033[33m"};
const std::string PURPLE{"\033[35m"};
const std::string LBLUE{"\033[1;34m"};
const std::string UP_ONE = "\033[1A";


#define ERROR_MSG BOLD << RED << "ERROR: " << ENDC

Catalog catalog;


static ImGuiInputTextFlags MULTILINE_TEXT_FLAGS = ImGuiInputTextFlags_AllowTabInput;

int catalogFilterCallback(ImGuiInputTextCallbackData* data)
{
if (data->BufTextLen > 0)
{
std::cout << "BUFFER: " << data->Buf << std::endl;
catalog.filter(data->Buf);
}
else
{
catalog.setAllVisible();
}

return 0;
}

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// Main code
int main(int argc, char** argv)
{
// Setup SDL
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
{
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std::cerr << BOLD << RED << "ERROR: " << ENDC << SDL_GetError() << "\n"
<< std::endl;
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return -1;
}

// From 2.0.18: Enable native IME.
#ifdef SDL_HINT_IME_SHOW_UI
SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
#endif

// Create window with SDL_Renderer graphics context
SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
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SDL_Window* window = SDL_CreateWindow(APP_NAME.c_str(),
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SDL_WINDOWPOS_CENTERED,
SDL_WINDOWPOS_CENTERED,
1280, 720, window_flags);
if (window == nullptr)
{
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std::cerr << ERROR_MSG << SDL_GetError();
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return -1;
}

SDL_Renderer* renderer = SDL_CreateRenderer(window, -1,
SDL_RENDERER_PRESENTVSYNC | SDL_RENDERER_ACCELERATED);
if (renderer == nullptr)
{
SDL_Log("Error creating SDL_Renderer!");
return 0;
}

//SDL_RendererInfo info;
//SDL_GetRendererInfo(renderer, &info);
//SDL_Log("Current SDL_Renderer: %s", info.name);

// Setup Dear ImGui context
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
// io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls

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

ImGuiStyle& style = ImGui::GetStyle();
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style.ScaleAllSizes(2.0);
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// Setup Platform/Renderer backends
ImGui_ImplSDL2_InitForSDLRenderer(window, renderer);
ImGui_ImplSDLRenderer2_Init(renderer);

// Load Fonts
// - If no fonts are loaded, dear imgui will use the default font. You can
// also load multiple fonts and use ImGui::PushFont()/PopFont() to select
// them.
// - AddFontFromFileTTF() will return the ImFont* so you can store it if you
// need to select the font among multiple.
// - If the file cannot be loaded, the function will return a nullptr. Please
// handle those errors in your application (e.g. use an assertion, or display
// an error and quit).
// - The fonts will be rasterized at a given size (w/ oversampling) and stored
// into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(),
// which ImGui_ImplXXXX_NewFrame below will call.
// - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use Freetype
// for higher quality font rendering.
// - Read 'docs/FONTS.md' for more instructions and details.
// - Remember that in C/C++ if you want to include a backslash \ in a string
// literal you need to write a double backslash \\ !
io.Fonts->AddFontDefault();
// ImFont* font = io.Fonts->AddFontFromFileTTF("../misc/fonts/ProggyClean.ttf", 28.0f);
ImFont* font = io.Fonts->AddFontFromFileTTF("../misc/fonts/Roboto-Medium.ttf", 28.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
//io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
//ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, nullptr, io.Fonts->GetGlyphRangesJapanese());
//IM_ASSERT(font != nullptr);

// Our state
bool show_demo_window = false;
bool show_another_window = false;
ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);

// Main loop
bool done = false;
while (! done)
{
// 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.
// - When io.WantCaptureMouse is true, do not dispatch mouse input data
// to your main application, or clear/overwrite your copy of the mouse
// data.
// - When io.WantCaptureKeyboard is true, do not dispatch keyboard input
// data to your main application, or clear/overwrite your copy of the
// keyboard data.
// Generally you may always pass all inputs to dear imgui, and hide them
// from your application based on those two flags.
SDL_Event event;
while (SDL_PollEvent(&event))
{
ImGui_ImplSDL2_ProcessEvent(&event);
if (event.type == SDL_QUIT)
{
done = true;
}

if (event.type == SDL_WINDOWEVENT &&
event.window.event == SDL_WINDOWEVENT_CLOSE &&
event.window.windowID == SDL_GetWindowID(window))
{
done = true;
}
}

// Start the Dear ImGui frame
ImGui_ImplSDLRenderer2_NewFrame();
ImGui_ImplSDL2_NewFrame();
ImGui::NewFrame();

#ifdef IMGUI_HAS_VIEWPORT
ImGuiViewport* viewport = ImGui::GetMainViewport();
ImGui::SetNextWindowPos(viewport->GetWorkPos());
ImGui::SetNextWindowSize(viewport->GetWorkSize());
ImGui::SetNextWindowViewport(viewport->ID);
#else
ImGui::SetNextWindowPos(ImVec2(0.0f, 0.0f));
ImGui::SetNextWindowSize(ImGui::GetIO().DisplaySize);
#endif
ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
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ImGui::Begin("inner window", nullptr,
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ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_MenuBar);

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ImGui::PushFont(font);
{
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//---[Menu bar]-----------------------------------------------------
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if (ImGui::BeginMenuBar())
{
if (ImGui::BeginMenu("File"))
{
if (ImGui::MenuItem("Close", "Ctrl+W"))
{
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std::cerr << ERROR_MSG << "Closing it out" << std::endl;
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done = true;
}
ImGui::EndMenu();
}
ImGui::EndMenuBar();
}

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//---[Left side]----------------------------------------------------
static int selected = 0;
{
ImGui::BeginChild("left_pane", ImVec2(150, 0),
ImGuiChildFlags_Border | ImGuiChildFlags_ResizeX);
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for (auto& iter : catalog)
{
if (iter.visible() &&
ImGui::CollapsingHeader(iter.getKey().c_str()))
{
// ImGui::Text("%s", iter.second.c_str());
ImGui::InputTextMultiline(
iter.getLcKey().c_str(),
const_cast<char*>(iter.getValue().c_str()),
iter.getValue().size(),
ImVec2(-FLT_MIN, ImGui::GetTextLineHeight() * 4),
MULTILINE_TEXT_FLAGS);
}
}
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ImGui::EndChild();
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}
ImGui::SameLine();

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//---[Right side]---------------------------------------------------
{
ImGui::BeginGroup();
ImGui::BeginChild("item view",
ImVec2(0, -ImGui::GetFrameHeightWithSpacing()));
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// ImGui::Text("MyObject: %d", selected);
char str0[128]{};
ImGui::InputText("Filter", str0,
IM_ARRAYSIZE(str0),
ImGuiInputTextFlags_CallbackEdit,
catalogFilterCallback);

ImGui::Separator();
if (ImGui::BeginTabBar("##Tabs", ImGuiTabBarFlags_None))
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{
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if (ImGui::BeginTabItem("Description"))
{
ImGui::TextWrapped(
"Lorem ipsum dolor sit amet, consectetur adipiscing "
"elit, sed do eiusmod tempor incididunt ut labore et"
" dolore magna aliqua. ");
ImGui::EndTabItem();
}

if (ImGui::BeginTabItem("Details"))
{
ImGui::Text("ID: 0123456789");
ImGui::EndTabItem();
}
ImGui::EndTabBar();
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}
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ImGui::EndChild();
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if (ImGui::Button("Revert")) {}
ImGui::SameLine();
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if (ImGui::Button("Save")) {}
ImGui::EndGroup();
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}
}

ImGui::PopFont();

ImGui::End();
ImGui::PopStyleVar(1);

// Rendering
ImGui::Render();
SDL_RenderSetScale(renderer,
io.DisplayFramebufferScale.x,
io.DisplayFramebufferScale.y);
SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
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SDL_RenderClear(renderer);
ImGui_ImplSDLRenderer2_RenderDrawData(ImGui::GetDrawData());
SDL_RenderPresent(renderer);
}

// Cleanup
ImGui_ImplSDLRenderer2_Shutdown();
ImGui_ImplSDL2_Shutdown();
ImGui::DestroyContext();

SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();

return 0;
}