#ifndef HUD_CLASS
#define HUD_CLASS

#include <memory>
#include <string>
#include <vector>

#include <glm/glm.hpp>

#include "StatBar.h"

class Font;
class Character;
class Box;
class TextBox;
class Texture;
class Camera;

// The player's health in the top left corner, the moves it has along the bottom, and everyone else's health
// over their heads
class Hud {
public:
    // Makes its GUI, and GUI draws in the order it was made, so make this before whatever should cover it.
    // The health bars are drawn from healthFill and healthFrame, plain bars if they're nullptr.
    Hud(Font* font, Texture* healthFill = nullptr, Texture* healthFrame = nullptr);

    // Once a frame, dt in real time. nullptr hides it all.
    // With everyone and the camera, the rest of them get bars over their heads.
    // With the cursor, in window pixels, hovering over a move pops up what it does.
    void Update(float dt, const Character* character,
        const std::vector<Character*>* everyone = nullptr, Camera* camera = nullptr, const glm::vec2* cursor = nullptr);

private:
    // One move in the list: the key it's on, its name, and its cooldown covering it from the top
    struct MoveSlot {
        Box* background = nullptr;
        Box* cooldown = nullptr;
        TextBox* key = nullptr;
        TextBox* name = nullptr;
        float flash = 0.0f;   // 1 just as it comes off cooldown, fades to 0
        bool wasReady = true;
    };

    // A bar over someone's head, kept on whoever it showed last so a new face doesn't show a loss
    struct Overhead {
        std::unique_ptr<StatBar> bar;
        const Character* shown = nullptr;
        float opacity = 0.0f;
    };

    void UpdateMoves(float dt, const Character* character, const glm::vec2* cursor);
    void UpdateOverheads(float dt, const Character* player, const std::vector<Character*>* everyone, Camera* camera);

    StatBar health;
    std::vector<MoveSlot> moves;
    std::vector<Overhead> overheads;

    // What the move under the cursor does
    Font* font = nullptr;
    Box* tooltip = nullptr;
    TextBox* tooltipTitle = nullptr;
    TextBox* tooltipText = nullptr;

    const Character* shown = nullptr;
    float opacity = 0.0f;
};

#endif