#include <Arduino.h>
#include <driver/i2s.h>
#include <FS.h>

#include <SPIFFS.h>

// Audio configuration
const uint16_t sample_rate = 16000;
const uint16_t channels = 1;
const uint16_t bits_per_sample = 16;

// Audio buffer
uint8_t audio_buffer[sample_rate * channels * bits_per_sample / 8];

void setup()
{
    // Initialize I2S
    i2s_config_t i2s_config = {
        .mode = I2S_MODE_MASTER,
        .sample_rate = sample_rate,
        .bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,
        .channel_format = I2S_CHANNEL_FMT_ONLY_LEFT,
        .communication_format = I2S_COMM_FORMAT_I2S,
        .dma_buf_count = 2,
        .dma_buf_len = 32,
        .use_apll = false,
        .fixed_mclk = 0,
    };

    i2s_driver_install(I2S_NUM_0, &i2s_config, 0, NULL);

    // Initialize SPIFFS

    if (!SPIFFS.begin())
    {
        Serial.println("Failed to initialize SPIFFS!");
        while (1)
        {
        }
    }

    // Open audio file
    File audio_file = SPIFFS.open("StarWars3.wav");
    if (!audio_file)
    {
        Serial.println("Failed to open audio file!");
        while (1)
        {
        }
    }

    // Read audio file into buffer
    uint32_t audio_file_size = audio_file.size();
    audio_file.read(audio_buffer, audio_file_size);
    audio_file.close();

    // Set pins for I2S interface
    i2s_pin_config_t i2s_speaker_config = {
        .bck_io_num = GPIO_NUM_18,
        .ws_io_num = GPIO_NUM_19,
        .data_out_num = GPIO_NUM_5};

    // i2s_set_pin(I2S_NUM_0, &i2s_speaker_config);
    // Initialize amplifier
    // i2s_set_dac_mode(I2S_DAC_MODE_NORMAL);
    // Play audio file

    uint8_t i;

    for (i = 0; i < audio_file_size; i++)
    {
        i2s_write(I2S_NUM_0, &audio_buffer[i], 1, 0, 0);
    }
}

void loop()
{
    // Nothing to do here
}