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#pragma once

#include <iostream>

#include <SFML/Window.hpp>
#include <SFML/Graphics.hpp>

#include "problem.hpp"

enum {
    M_NORMAL,
    M_INS_OBSTACLE,
    M_SEL_BEGIN,
    M_SEL_END
};

enum {
    S_XY,
    S_THETA,
    S_PHI,
    S_RADIUS
};

class UI {
    private:
    hilare_a_param *_param;

    problem _p;
    solution _s;
    solver _solver;
    bool _got_sol;

    struct {
        double x0, y0, zoom;
    } _view;

    sf::ContextSettings _settings;
    sf::RenderWindow _win;

    // interaction mode
    int _mode, _sel_step;
    hilare_a _sel_pos;
    circle _sel_obs;

    public:
    UI(hilare_a_param *p);

    void handle_normal(const sf::Event &ev);
    void handle_ins_obs(const sf::Event &ev);
    void handle_sel_pos(const sf::Event &ev);

    void render_circle(const circle& c, sf::Color border, sf::Color inside, int linewidth);

    void render_pos(const hilare_a &pos, sf::Color c);
    void render_obstacle(const obstacle &o);
    void render_mvt(const hilare_a_mvt &m, sf::Color c);
    void render_sol(const solution &s, sf::Color c);

    void render_problem();
    void render_solution();
    void render_internal();

    sf::Vector2f to_view(const vec &p);
    vec from_view(const sf::Vector2f &p);
    vec from_view(const sf::Vector2i &p);
    vec mouse_coord();

    void run();
};


/* vim: set ts=4 sw=4 tw=0 noet :*/