#include "RomInfo.h"

#include <filesystem>

#include "imgui.h"

RomInfo::RomInfo(
    std::shared_ptr<Graphics> graphics,
    std::shared_ptr<MachineState> machine_state,
    std::shared_ptr<CallbackManager> callback_manager
) : graphics{std::move(graphics)},
    machine_state{std::move(machine_state)},
    callback_manager{std::move(callback_manager)}
{
    this->callback_manager->rom_load_callback.push_back(std::bind(
        &RomInfo::on_rom_load,
        this,
        std::placeholders::_1
    ));
}

void RomInfo::render()
{
    if (ImGui::Begin("Chip-8 - ROM Info"))
    {
        if (!this->rom_path.empty())
        {
            ImGui::Text("ROM: %s", this->rom_path.c_str());
        }
        else
        {
            ImGui::Text("ROM: None");
        }
    }
    ImGui::End();
}

void RomInfo::on_rom_load(const std::string& rom_path)
{
    std::filesystem::path home = SDL_GetUserFolder(SDL_FOLDER_HOME);
    std::filesystem::path path = rom_path;

    this->rom_path = "~/" + std::filesystem::relative(path, home).string();
}