/*
 ==============================================================================
 This file is part of the IEM plug-in suite.
 Author: Daniel Rudrich
 Copyright (c) 2017 - Institute of Electronic Music and Acoustics (IEM)
 https://iem.at

 The IEM plug-in suite is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 The IEM plug-in suite is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this software.  If not, see <https://www.gnu.org/licenses/>.
 ==============================================================================
 */

#include "PluginProcessor.h"
#include "PluginEditor.h"

//==============================================================================
PluginTemplateAudioProcessor::PluginTemplateAudioProcessor() :
    AudioProcessorBase (
#ifndef JucePlugin_PreferredChannelConfigurations
        BusesProperties()
    #if ! JucePlugin_IsMidiEffect
        #if ! JucePlugin_IsSynth
            .withInput ("Input", juce::AudioChannelSet::discreteChannels (10), true)
        #endif
            .withOutput ("Output", juce::AudioChannelSet::ambisonic (7), true)
    #endif
            ,
#endif
        createParameterLayout())
{
    // get pointers to the parameters
    inputChannelsSetting = parameters.getRawParameterValue ("inputChannelsSetting");
    outputOrderSetting = parameters.getRawParameterValue ("outputOrderSetting");
    useSN3D = parameters.getRawParameterValue ("useSN3D");
    param1 = parameters.getRawParameterValue ("param1");
    param2 = parameters.getRawParameterValue ("param2");

    // add listeners to parameter changes
    parameters.addParameterListener ("inputChannelsSetting", this);
    parameters.addParameterListener ("outputOrderSetting", this);
    parameters.addParameterListener ("useSN3D", this);
    parameters.addParameterListener ("param1", this);
    parameters.addParameterListener ("param2", this);
}

PluginTemplateAudioProcessor::~PluginTemplateAudioProcessor()
{
}

//==============================================================================
int PluginTemplateAudioProcessor::getNumPrograms()
{
    return 1; // NB: some hosts don't cope very well if you tell them there are 0 programs,
        // so this should be at least 1, even if you're not really implementing programs.
}

int PluginTemplateAudioProcessor::getCurrentProgram()
{
    return 0;
}

void PluginTemplateAudioProcessor::setCurrentProgram (int index)
{
    juce::ignoreUnused (index);
}

const juce::String PluginTemplateAudioProcessor::getProgramName (int index)
{
    juce::ignoreUnused (index);
    return {};
}

void PluginTemplateAudioProcessor::changeProgramName (int index, const juce::String& newName)
{
    juce::ignoreUnused (index, newName);
}

//==============================================================================
void PluginTemplateAudioProcessor::prepareToPlay (double sampleRate, int samplesPerBlock)
{
    checkInputAndOutput (this,
                         static_cast<int> (*inputChannelsSetting),
                         static_cast<int> (*outputOrderSetting),
                         true);
    // Use this method as the place to do any pre-playback
    // initialisation that you need..
    juce::ignoreUnused (sampleRate, samplesPerBlock);
}

void PluginTemplateAudioProcessor::releaseResources()
{
    // When playback stops, you can use this as an opportunity to free up any
    // spare memory, etc.
}

void PluginTemplateAudioProcessor::processBlock (juce::AudioSampleBuffer& buffer, juce::MidiBuffer&)
{
    checkInputAndOutput (this,
                         static_cast<int> (*inputChannelsSetting),
                         static_cast<int> (*outputOrderSetting),
                         false);
    juce::ScopedNoDenormals noDenormals;

    const int totalNumInputChannels = getTotalNumInputChannels();
    const int totalNumOutputChannels = getTotalNumOutputChannels();

    // In case we have more outputs than inputs, this code clears any output
    // channels that didn't contain input data, (because these aren't
    // guaranteed to be empty - they may contain garbage).
    // This is here to avoid people getting screaming feedback
    // when they first compile a plugin, but obviously you don't need to keep
    // this code if your algorithm always overwrites all the output channels.
    for (int i = totalNumInputChannels; i < totalNumOutputChannels; ++i)
        buffer.clear (i, 0, buffer.getNumSamples());

    // This is the place where you'd normally do the guts of your plugin's
    // audio processing...
    for (int channel = 0; channel < totalNumInputChannels; ++channel)
    {
        float* channelData = buffer.getWritePointer (channel);
        juce::ignoreUnused (channelData);
        // ..do something to the data...
    }
}

//==============================================================================
bool PluginTemplateAudioProcessor::hasEditor() const
{
    return true; // (change this to false if you choose to not supply an editor)
}

juce::AudioProcessorEditor* PluginTemplateAudioProcessor::createEditor()
{
    return new PluginTemplateAudioProcessorEditor (*this, parameters);
}

//==============================================================================
void PluginTemplateAudioProcessor::getStateInformation (juce::MemoryBlock& destData)
{
    auto state = parameters.copyState();

    auto oscConfig = state.getOrCreateChildWithName ("OSCConfig", nullptr);
    oscConfig.copyPropertiesFrom (oscParameterInterface.getConfig(), nullptr);

    std::unique_ptr<juce::XmlElement> xml (state.createXml());
    copyXmlToBinary (*xml, destData);
}

void PluginTemplateAudioProcessor::setStateInformation (const void* data, int sizeInBytes)
{
    // You should use this method to restore your parameters from this memory block,
    // whose contents will have been created by the getStateInformation() call.
    std::unique_ptr<juce::XmlElement> xmlState (getXmlFromBinary (data, sizeInBytes));
    if (xmlState.get() != nullptr)
        if (xmlState->hasTagName (parameters.state.getType()))
        {
            parameters.replaceState (juce::ValueTree::fromXml (*xmlState));
            if (parameters.state.hasProperty ("OSCPort")) // legacy
            {
                oscParameterInterface.getOSCReceiver().connect (
                    parameters.state.getProperty ("OSCPort", juce::var (-1)));
                parameters.state.removeProperty ("OSCPort", nullptr);
            }

            auto oscConfig = parameters.state.getChildWithName ("OSCConfig");
            if (oscConfig.isValid())
                oscParameterInterface.setConfig (oscConfig);
        }
}

//==============================================================================
void PluginTemplateAudioProcessor::parameterChanged (const juce::String& parameterID,
                                                     float newValue)
{
    DBG ("Parameter with ID " << parameterID << " has changed. New value: " << newValue);

    if (parameterID == "inputChannelsSetting" || parameterID == "outputOrderSetting")
        userChangedIOSettings = true;
}

void PluginTemplateAudioProcessor::updateBuffers()
{
    DBG ("IOHelper:  input size: " << input.getSize());
    DBG ("IOHelper: output size: " << output.getSize());
}

//==============================================================================
std::vector<std::unique_ptr<juce::RangedAudioParameter>>
    PluginTemplateAudioProcessor::createParameterLayout()
{
    // add your audio parameters here
    std::vector<std::unique_ptr<juce::RangedAudioParameter>> params;

    params.push_back (OSCParameterInterface::createParameterTheOldWay (
        "inputChannelsSetting",
        "Number of input channels ",
        "",
        juce::NormalisableRange<float> (0.0f, 10.0f, 1.0f),
        0.0f,
        [] (float value) { return value < 0.5f ? "Auto" : juce::String (value); },
        nullptr));

    params.push_back (OSCParameterInterface::createParameterTheOldWay (
        "outputOrderSetting",
        "Ambisonic Order",
        "",
        juce::NormalisableRange<float> (0.0f, 8.0f, 1.0f),
        0.0f,
        [] (float value)
        {
            if (value >= 0.5f && value < 1.5f)
                return "0th";
            else if (value >= 1.5f && value < 2.5f)
                return "1st";
            else if (value >= 2.5f && value < 3.5f)
                return "2nd";
            else if (value >= 3.5f && value < 4.5f)
                return "3rd";
            else if (value >= 4.5f && value < 5.5f)
                return "4th";
            else if (value >= 5.5f && value < 6.5f)
                return "5th";
            else if (value >= 6.5f && value < 7.5f)
                return "6th";
            else if (value >= 7.5f)
                return "7th";
            else
                return "Auto";
        },
        nullptr));

    params.push_back (OSCParameterInterface::createParameterTheOldWay (
        "useSN3D",
        "Normalization",
        "",
        juce::NormalisableRange<float> (0.0f, 1.0f, 1.0f),
        1.0f,
        [] (float value)
        {
            if (value >= 0.5f)
                return "SN3D";
            else
                return "N3D";
        },
        nullptr));

    params.push_back (OSCParameterInterface::createParameterTheOldWay (
        "param1",
        "Parameter 1",
        "",
        juce::NormalisableRange<float> (-10.0f, 10.0f, 0.1f),
        0.0,
        [] (float value) { return juce::String (value); },
        nullptr));

    params.push_back (OSCParameterInterface::createParameterTheOldWay (
        "param2",
        "Parameter 2",
        "dB",
        juce::NormalisableRange<float> (-50.0f, 0.0f, 0.1f),
        -10.0,
        [] (float value) { return juce::String (value, 1); },
        nullptr));

    return params;
}

//==============================================================================
// This creates new instances of the plugin..
juce::AudioProcessor* JUCE_CALLTYPE createPluginFilter()
{
    return new PluginTemplateAudioProcessor();
}
