#include <Arduino.h>
#ifdef ESP32
    #include <WiFi.h>
#else
    #include <ESP8266WiFi.h>
#endif

#include "AudioFileSourcePROGMEM.h"
#include "AudioGeneratorWAV.h"
#include "AudioOutputI2S.h"
#include "AudioOutputMixer.h"

// VIOLA sample taken from https://ccrma.stanford.edu/~jos/pasp/Sound_Examples.html
#include "viola.h"

AudioGeneratorWAV *wav[2];
AudioFileSourcePROGMEM *file[2];
AudioOutputI2S *out;
AudioOutputMixer *mixer;
AudioOutputMixerStub *stub[2];

void setup()
{
  WiFi.mode(WIFI_OFF); 
  Serial.begin(115200);
  delay(1000);
  Serial.printf("WAV start\n");
  file[0] = new AudioFileSourcePROGMEM( viola, sizeof(viola) );
  out = new AudioOutputI2S();
  mixer = new AudioOutputMixer(32, out);
  stub[0] = mixer->NewInput();
  stub[0]->SetGain(0.3);
  wav[0] = new AudioGeneratorWAV();
  wav[0]->begin(file[0], stub[0]);
  // Begin wav[1] later in loop()
  Serial.printf("starting 1\n");
}

void loop()
{
  static uint32_t start = 0;
  static bool go = false;
  
  if (!start) start = millis();

  if (wav[0]->isRunning()) {
    if (!wav[0]->loop()) { wav[0]->stop(); stub[0]->stop(); Serial.printf("stopping 1\n"); }
  }

  if (millis()-start > 3000) {
    if (!go) {
      Serial.printf("starting 2\n");
      stub[1] = mixer->NewInput();
      stub[1]->SetGain(0.4);
      wav[1] = new AudioGeneratorWAV();
      file[1] = new AudioFileSourcePROGMEM( viola, sizeof(viola) );
      wav[1]->begin(file[1], stub[1]);
      go = true;
    }
    if (wav[1]->isRunning()) {
      if (!wav[1]->loop()) { wav[1]->stop(); stub[1]->stop(); Serial.printf("stopping 2\n");}
    }
  }

}

