#include "EnvelopePanel.h"

EnvelopePanel::EnvelopePanel()
{
    titleLabel.setText ("ENVELOPE", juce::dontSendNotification);
    titleLabel.setJustificationType (juce::Justification::centredLeft);
    titleLabel.setColour (juce::Label::textColourId, InstaGrainLookAndFeel::textPrimary);
    addAndMakeVisible (titleLabel);

    setupKnob (attackKnob, aLabel, "A", 0.001, 2.0, 0.01, " s");
    setupKnob (decayKnob, dLabel, "D", 0.001, 2.0, 0.1, " s");
    setupKnob (sustainKnob, sLabel, "S", 0.0, 1.0, 1.0);
    setupKnob (releaseKnob, rLabel, "R", 0.01, 5.0, 0.3, " s");

    attackKnob.setSkewFactorFromMidPoint (0.2);
    decayKnob.setSkewFactorFromMidPoint (0.3);
    releaseKnob.setSkewFactorFromMidPoint (0.5);
}

void EnvelopePanel::setupKnob (juce::Slider& knob, juce::Label& label, const juce::String& name,
                                double min, double max, double def, const juce::String& suffix)
{
    knob.setSliderStyle (juce::Slider::RotaryHorizontalVerticalDrag);
    knob.setTextBoxStyle (juce::Slider::TextBoxBelow, false, 50, 14);
    knob.setRange (min, max);
    knob.setValue (def);
    knob.setTextValueSuffix (suffix);
    knob.getProperties().set (InstaGrainLookAndFeel::knobTypeProperty, "orange");
    addAndMakeVisible (knob);

    label.setText (name, juce::dontSendNotification);
    label.setJustificationType (juce::Justification::centred);
    label.setColour (juce::Label::textColourId, InstaGrainLookAndFeel::textSecondary);
    addAndMakeVisible (label);
}

void EnvelopePanel::resized()
{
    auto bounds = getLocalBounds().reduced (4);
    titleLabel.setBounds (bounds.removeFromTop (20));

    int knobW = bounds.getWidth() / 4;

    juce::Slider* knobs[] = { &attackKnob, &decayKnob, &sustainKnob, &releaseKnob };
    juce::Label* labels[] = { &aLabel, &dLabel, &sLabel, &rLabel };

    for (int i = 0; i < 4; ++i)
    {
        auto col = bounds.removeFromLeft (knobW);
        auto knobArea = col.withTrimmedBottom (16);
        knobs[i]->setBounds (knobArea.reduced (2));
        labels[i]->setBounds (col.getX(), knobArea.getBottom() - 2, col.getWidth(), 16);
    }
}

void EnvelopePanel::paint (juce::Graphics& g)
{
    auto bounds = getLocalBounds().toFloat();
    g.setColour (InstaGrainLookAndFeel::bgMedium.withAlpha (0.5f));
    g.fillRoundedRectangle (bounds, 4.0f);
    g.setColour (InstaGrainLookAndFeel::bgLight.withAlpha (0.3f));
    g.drawRoundedRectangle (bounds, 4.0f, 1.0f);
}