#pragma once

#include <JuceHeader.h>
#include <memory>
#include "../Resources.h"
#include "KnobLookAndFeel.h"

namespace serum
{

// ===========================================================================
// Rotary knob — a juce::Slider drawn by KnobLookAndFeel. The knob paints its
// own name below the dial, so no control is a bare arc whose only hint is a
// tooltip. The value readout is formatted by a user-provided function via
// getTextFromValue().
//
// While the knob is being dragged it also shows a small floating label near the
// mouse cursor with the live (formatted) value, giving immediate feedback
// without changing the slider's normal behaviour.
// ===========================================================================
class Knob : public juce::Slider
{
public:
    explicit Knob (const juce::String& name,
                   std::function<juce::String (float)> formatter = {});

    void setFormatter (std::function<juce::String (float)> f) { formatter = std::move (f); }

    // Value a double click returns to. Call it with the parameter's own default
    // so the gesture restores the real default, never a hardcoded 0.5.
    void setDefaultValue (double v) { setDoubleClickReturnValue (true, v); }

    juce::String getTextFromValue (double value) override;

    void paint (juce::Graphics& g) override;
    void resized() override;
    void visibilityChanged() override;

    void mouseDown (const juce::MouseEvent& e) override;
    void mouseDrag (const juce::MouseEvent& e) override;
    void mouseUp   (const juce::MouseEvent& e) override;
    void mouseExit (const juce::MouseEvent& e) override;

private:
    void showValuePopup (const juce::MouseEvent& e);
    void hideValuePopup();

    std::function<juce::String (float)> formatter;
    std::unique_ptr<juce::Label> valuePopup;
    juce::Rectangle<int> textArea;   // name strip under the dial
};

} // namespace serum