#pragma once

#include <JuceHeader.h>
#include <functional>
#include "PluginProcessor.h"

// === Small waveform thumbnail =================================================
class WaveThumbnail : public juce::Component
{
public:
    WaveThumbnail (const std::vector<float>* tbl = nullptr) : table (tbl) {}

    void setTable (const std::vector<float>* tbl) { table = tbl; repaint(); }

    void setHighlight (bool shouldHighlight)
    {
        if (highlight == shouldHighlight) return;
        highlight = shouldHighlight;
        repaint();
    }

    void setOnClick (std::function<void()> handler) { onClick = std::move (handler); }

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

    void mouseDown (const juce::MouseEvent& e) override
    {
        juce::ignoreUnused (e);
        if (onClick) onClick();
    }

private:
    const std::vector<float>* table { nullptr };
    bool highlight { false };
    std::function<void()> onClick;
};

// === Draw-your-own wave pad ===================================================
// (Grid + thicker antialiased stroke + smooth “ink” interpolation while dragging)
class DrawWaveComponent : public juce::Component
{
public:
    DrawWaveComponent();

    void clear();
    void paint (juce::Graphics& g) override;
    void mouseDown (const juce::MouseEvent& e) override;
    void mouseDrag (const juce::MouseEvent& e) override;

    const std::vector<float>& getTable() const { return samples; }

private:
    void drawAt (const juce::MouseEvent& e);
    void setSampleAt (int idx, float value);

    std::vector<float> samples;
    int lastDrawIndex { -1 };
};

// === Custom looks =============================================================
class MetalKnobLookAndFeel : public juce::LookAndFeel_V4
{
public:
    void drawRotarySlider (juce::Graphics& g, int x, int y, int width, int height,
                           float sliderPosProportional, float rotaryStartAngle,
                           float rotaryEndAngle, juce::Slider& slider) override;
};

class FlatButtonLookAndFeel : public juce::LookAndFeel_V4
{
public:
    void drawButtonBackground (juce::Graphics& g, juce::Button& b, const juce::Colour& bg,
                               bool isHighlighted, bool isDown) override
    {
        auto r = b.getLocalBounds().toFloat();
        auto base = bg; if (isDown) base = base.darker (0.15f); else if (isHighlighted) base = base.brighter (0.08f);
        g.setColour (base);
        g.fillRoundedRectangle (r, 4.0f);
        g.setColour (juce::Colours::black.withAlpha (0.5f));
        g.drawRoundedRectangle (r.reduced (0.5f), 4.0f, 1.0f);
    }
};

// === Editor ===================================================================
class WavetableSynthAudioProcessorEditor  : public juce::AudioProcessorEditor,
                                            private juce::Timer
{
public:
    explicit WavetableSynthAudioProcessorEditor (WavetableSynthAudioProcessor&);
    ~WavetableSynthAudioProcessorEditor() override = default;

    void paint (juce::Graphics&) override;
    void resized() override;
    void mouseDown (const juce::MouseEvent& e) override;

private:
    WavetableSynthAudioProcessor& audioProcessor;

    // Morph
    juce::Slider       morphSlider;
    juce::ToggleButton morphLoopToggle { "Loop Morph" };
    juce::ComboBox     morphLoopMode; // Forward / Ping-Pong / Half Trip

    // Master
    juce::Slider master;
    std::unique_ptr<juce::AudioProcessorValueTreeState::SliderAttachment> morphAttach, masterAttach;

    // A/B/C thumbnails
    WaveThumbnail slotABox, slotBBox, slotCBox;

    // Synth knobs
    juce::Slider cutoffSlider, attack, decay, sustain, release;
    juce::Slider lfoRate, lfoDepth, fenvA, fenvD, fenvS, fenvR, fenvAmt;

    // FX knobs
    juce::Slider chRate, chDepth, chDelay, chFb, chMix;
    juce::Slider rvRoom, rvDamp, rvWidth, rvWet;

    // Attachments
    std::unique_ptr<juce::AudioProcessorValueTreeState::SliderAttachment>
        cutoffAttach, attAttach, decAttach, susAttach, relAttach,
        lfoRateAttach, lfoDepthAttach, fenvAAttach, fenvDAttach, fenvSAttach, fenvRAttach, fenvAmtAttach,
        chRateAttach, chDepthAttach, chDelayAttach, chFbAttach, chMixAttach,
        rvRoomAttach, rvDampAttach, rvWidthAttach, rvWetAttach;

    // Hidden slot params
    juce::Slider slotAParam, slotBParam, slotCParam;
    std::unique_ptr<juce::AudioProcessorValueTreeState::SliderAttachment>
        slotAAttach, slotBAttach, slotCAttach;

    // Toggles
    juce::ToggleButton chorusOn { "Chorus" }, reverbOn { "Reverb" }, osc2Mute { "Deactivate Osc2" };
    std::unique_ptr<juce::AudioProcessorValueTreeState::ButtonAttachment> chOnAttach, rvOnAttach, osc2MuteAttach;
    std::unique_ptr<juce::AudioProcessorValueTreeState::ButtonAttachment> morphLoopToggleAttach;
    std::unique_ptr<juce::AudioProcessorValueTreeState::ComboBoxAttachment>  morphLoopModeAttach;

    // Browser grid cells
    std::vector<juce::Rectangle<int>> browserCells;  // 4 x 10 = 40

    // Draw pad + buttons
    DrawWaveComponent userDraw;
    juce::TextButton addToBrowser { "Add to Browser" }, clearDraw { "Clear" }, presetButton { "Presets" };

    // Labels
    juce::Label lblCutoff, lblAttack, lblDecay, lblSustain, lblRelease;
    juce::Label lblLfoRate, lblLfoDepth, lblFenvA, lblFenvD, lblFenvS, lblFenvR, lblFenvAmt;
    juce::Label lblChRate, lblChDepth, lblChDelay, lblChFb, lblChMix;
    juce::Label lblRvRoom, lblRvDamp, lblRvWidth, lblRvWet;
    juce::Label lblMaster, lblDrawWave;

    // L&F
    MetalKnobLookAndFeel  metalKnobLNF;
    FlatButtonLookAndFeel flatBtnLNF;

    // Layout helpers
    juce::Rectangle<int> getTopPanelBounds() const;
    juce::Rectangle<int> getBottomPanelBounds() const;

    // Logic
    void timerCallback() override;
    void handleBrowserClick (juce::Point<int> pos);
    void showPresetMenu();
    void setActiveSlot (int slotIndex);

    // Helpers
    static void labelAbove (juce::Label& L, const juce::String& text);
    int activeSlot { 0 };

    // Local morph animation (fallback)
    double lastTimerMs { juce::Time::getMillisecondCounterHiRes() };
    float  localMorphPhase { 0.0f }; // 0..1
};