#include "window.h"

namespace ui
{
    Window::Window(const char *title, int width, int height)
    {
        this->win = SDL_CreateWindow(title, width, height, 0);
        this->context = new Context(this->win);

        windows.push_back({SDL_GetWindowID(this->win), this});

        float x, y;
        SDL_GetMouseState(&x, &y);
        input.mouse.x = int(x);
        input.mouse.y = int(y);
    }

    Window::~Window()
    {
        for (size_t i=0; i<windows.size(); ++i) { if (windows[i].second==this) std::swap(windows[i], windows.back()); windows.pop_back(); break; }

        delete this->context;
        SDL_DestroyWindow(this->win);
    }
    
    bool Window::HandleEvents(SDL_Event *e)
    {
        switch (e->type) {
            case SDL_EVENT_WINDOW_EXPOSED:
            case SDL_EVENT_WINDOW_SHOWN:
                this->Update();
                break;

            case SDL_EVENT_MOUSE_MOTION:
                input.mouse.x = e->motion.x;
                input.mouse.y = e->motion.y;
                this->Update();
                break;

            case SDL_EVENT_MOUSE_BUTTON_DOWN:
                input.mouse.buttons[e->button.button-1] = mbsDown;
                this->Update();
                input.mouse.buttons[e->button.button-1] = mbsPressed;
                break;

            case SDL_EVENT_MOUSE_BUTTON_UP:
                input.mouse.buttons[e->button.button-1] = mbsUp;
                this->Update();
                input.mouse.buttons[e->button.button-1] = mbsReleased;
                break;
            
            case SDL_EVENT_MOUSE_WHEEL:
                input.mouse.wheel = e->wheel.integer_y;
                this->Update();
                input.mouse.wheel = 0;
                break;
            
            case SDL_EVENT_KEY_DOWN:
                input.keyboard.keyDown = e->key.scancode;
                this->Update();
                input.keyboard.keyDown = 0;
                break;

            case SDL_EVENT_KEY_UP:
                input.keyboard.keyUp = e->key.scancode;
                this->Update();
                input.keyboard.keyUp = 0;
                break;
                
            default: break;
        }
    }

    void Window::Update()
    {
        this->context->Clear(0xff1e1e1e);
    }

    /* MÈTODES ESTATICS */
    /* ================ */

    std::vector<std::pair<uint32_t, Window*>> Window::windows;

    void Window::DistributeEvent(SDL_Event *e)
    {
        uint32_t id = SDL_GetWindowID(SDL_GetWindowFromEvent(e));
        for (auto window : Window::windows) if (window.first == id) window.second->HandleEvents(e);
    }
}