#include "AmbivalenceUI.h"
#include "../PluginProcessor.h"

// --- AmbivalenceLookAndFeel ---------------------------------------------
AmbivalenceLookAndFeel::AmbivalenceLookAndFeel()
{
    setColour(juce::Slider::backgroundColourId, AmbivalenceColors::ArcTrack);
    setColour(juce::Slider::thumbColourId, AmbivalenceColors::Accent);
    setColour(juce::Slider::trackColourId, AmbivalenceColors::ArcFill);
    setColour(juce::Label::textColourId, AmbivalenceColors::TextSecondary);
    setColour(juce::ComboBox::backgroundColourId, AmbivalenceColors::Surface);
    setColour(juce::ComboBox::textColourId, AmbivalenceColors::TextPrimary);
    setColour(juce::ComboBox::outlineColourId, AmbivalenceColors::Border);
    mainFont = juce::Font(juce::FontOptions("Helvetica Neue", 11.f, juce::Font::plain));
}

void AmbivalenceLookAndFeel::drawRotarySlider(juce::Graphics& g,
    int x, int y, int w, int h,
    float sliderPos, float startAngle, float endAngle, juce::Slider&)
{
    auto b = juce::Rectangle<float>((float)x, (float)y, (float)w, (float)h).reduced(4.f);
    float cx = b.getCentreX(), cy = b.getCentreY();
    float r = juce::jmin(b.getWidth(), b.getHeight()) * 0.45f;
    float th = r * 0.22f;

    juce::Path track;
    track.addCentredArc(cx, cy, r, r, 0.f, startAngle, endAngle, true);
    g.setColour(AmbivalenceColors::ArcTrack);
    g.strokePath(track, juce::PathStrokeType(th,
        juce::PathStrokeType::curved, juce::PathStrokeType::rounded));

    float angle = startAngle + sliderPos * (endAngle - startAngle);
    juce::Path fill;
    fill.addCentredArc(cx, cy, r, r, 0.f, startAngle, angle, true);
    g.setColour(AmbivalenceColors::ArcFill);
    g.strokePath(fill, juce::PathStrokeType(th,
        juce::PathStrokeType::curved, juce::PathStrokeType::rounded));

    g.setColour(AmbivalenceColors::Panel);
    g.fillEllipse(cx - r * 0.28f, cy - r * 0.28f, r * 0.56f, r * 0.56f);

    float ix = cx + r * 0.6f * std::sin(angle);
    float iy = cy - r * 0.6f * std::cos(angle);
    g.setColour(AmbivalenceColors::TextPrimary);
    g.drawLine(cx, cy, ix, iy, 2.f);
}

void AmbivalenceLookAndFeel::drawLinearSlider(juce::Graphics& g,
    int x, int y, int w, int h,
    float sliderPos, float, float, juce::Slider::SliderStyle, juce::Slider&)
{
    auto b = juce::Rectangle<int>(x, y, w, h).toFloat();
    float ty = b.getCentreY() - 2.f;
    g.setColour(AmbivalenceColors::ArcTrack);
    g.fillRoundedRectangle(b.getX(), ty, b.getWidth(), 4.f, 2.f);
    g.setColour(AmbivalenceColors::Accent);
    g.fillRoundedRectangle(b.getX(), ty, sliderPos - b.getX(), 4.f, 2.f);
    float r = 7.f;
    g.setColour(AmbivalenceColors::TextPrimary);
    g.fillEllipse(sliderPos - r, b.getCentreY() - r, r * 2.f, r * 2.f);
}

void AmbivalenceLookAndFeel::drawComboBox(juce::Graphics& g,
    int w, int h, bool isDown, int, int, int, int, juce::ComboBox&)
{
    auto b = juce::Rectangle<int>(0, 0, w, h).toFloat();
    g.setColour(isDown ? AmbivalenceColors::Panel : AmbivalenceColors::Surface);
    g.fillRoundedRectangle(b, 3.f);
    g.setColour(AmbivalenceColors::Border);
    g.drawRoundedRectangle(b.reduced(0.5f), 3.f, 1.f);
    juce::Path arrow;
    arrow.addTriangle(w - 16.f, h * 0.5f - 3.f,
        w - 8.f, h * 0.5f - 3.f,
        w - 12.f, h * 0.5f + 3.f);
    g.setColour(AmbivalenceColors::TextSecondary);
    g.fillPath(arrow);
}

void AmbivalenceLookAndFeel::positionComboBoxText(juce::ComboBox& box, juce::Label& label) {
    label.setBounds(6, 1, box.getWidth() - 22, box.getHeight() - 2);
    label.setFont(getComboBoxFont(box));
}

juce::Font AmbivalenceLookAndFeel::getLabelFont(juce::Label& label) { return label.getFont(); }
juce::Font AmbivalenceLookAndFeel::getComboBoxFont(juce::ComboBox&) { return mainFont.withHeight(11.f * zoomScale); }

void AmbivalenceLookAndFeel::drawGroupComponentOutline(juce::Graphics& g,
    int w, int h, const juce::String& text,
    const juce::Justification&, juce::GroupComponent&)
{
    float textH = 12.f, indent = 8.f, yOff = textH * 0.5f;
    juce::Path p;
    p.startNewSubPath(indent + 4.f, yOff); p.lineTo(indent, yOff);
    p.lineTo(indent, (float)h - 1.f);
    p.lineTo((float)w - indent, (float)h - 1.f);
    p.lineTo((float)w - indent, yOff);

     // * redraw after changes
    juce::GlyphArrangement ga;
    ga.addLineOfText(mainFont.withHeight(textH), text, 0.f, 0.f);
    float tw = ga.getBoundingBox(0, -1, true).getWidth() + 6.f;

    p.lineTo(indent + 14.f + tw, yOff);
    g.setColour(AmbivalenceColors::Border);
    g.strokePath(p, juce::PathStrokeType(1.f));
    g.setColour(AmbivalenceColors::TextSecondary);
    g.setFont(mainFont.withHeight(textH).boldened());
    g.drawText(text, (int)(indent + 14.f), 0, (int)tw, (int)textH,
        juce::Justification::centredLeft);
}

// --- VUMeter ---------------------------------------------------------
VUMeter::VUMeter(const juce::String& lbl, Side s) : label(lbl), side(s) {}

void VUMeter::paint(juce::Graphics& g)
{
    auto b = getLocalBounds().toFloat().reduced(1.f);
    g.setColour(AmbivalenceColors::Surface);
    g.fillRoundedRectangle(b, 3.f);

    const float inset = 8.f;
    const float labelW = 20.f;
    const float bx = b.getX() + inset + labelW + 2.f;
    const float bw = b.getWidth() - (bx - b.getX()) - inset;

    const float barH = 7.f;
    const float gap = 2.f;
    const float blockH = barH * 2.f + gap;
    const float startY = b.getY() + (b.getHeight() - blockH) * 0.5f;

    auto bar = [&](float y, float level) {
        float n = juce::jlimit(0.f, 1.f, juce::jmap(
            juce::Decibels::gainToDecibels(level + 1e-9f), -60.f, 0.f, 0.f, 1.f));
        g.setColour(AmbivalenceColors::ArcTrack);
        g.fillRoundedRectangle(bx, y, bw, barH, 2.f);
        juce::ColourGradient gr(AmbivalenceColors::AccentBlue, bx, y,
            AmbivalenceColors::Accent, bx + bw, y, false);
        g.setGradientFill(gr);
        g.fillRoundedRectangle(bx, y, bw * n, barH, 2.f);
        };
    bar(startY, levelL);
    bar(startY + barH + gap, levelR);

    g.setColour(AmbivalenceColors::TextSecondary);
    g.setFont(8.f * zoomScale);
    g.drawText(label, (int)(b.getX() + inset), (int)b.getY(), (int)labelW,
        (int)b.getHeight(), juce::Justification::centredLeft);
}

// --- ArcKnob ---------------------------------------------------------
void ArcKnob::build(juce::AudioProcessorValueTreeState& apvts,
    const juce::String& paramID,
    const juce::String& labelText,
    juce::Component* parent,
    AmbivalenceLookAndFeel& laf)
{
    slider.setSliderStyle(juce::Slider::RotaryHorizontalVerticalDrag);
    slider.setTextBoxStyle(juce::Slider::TextBoxBelow, false, 62, 14);
    slider.setLookAndFeel(&laf);
    slider.setColour(juce::Slider::textBoxTextColourId,
        AmbivalenceColors::TextSecondary);
    slider.setColour(juce::Slider::textBoxOutlineColourId,
        juce::Colours::transparentBlack);
    parent->addAndMakeVisible(slider);

    label.setText(labelText, juce::dontSendNotification);
    label.setJustificationType(juce::Justification::centred);
    label.setFont(juce::Font(juce::FontOptions(9.f)));
    label.setColour(juce::Label::textColourId, AmbivalenceColors::TextSecondary);
    parent->addAndMakeVisible(label);

     // * after changes
    attachment.reset(
        new juce::AudioProcessorValueTreeState::SliderAttachment(
            apvts, paramID, slider));
}