<?php
function generateTTS($text, $filename, $apiKey) {
  $url = "https://texttospeech.googleapis.com/v1/text:synthesize?key=" . urlencode($apiKey);

  /*
  //  French voice (Female)
  $request = [
    'input' => ['text' => $text],
    'voice' => ['languageCode' => 'fr-FR', 'name' => 'fr-FR-Wavenet-A'], // Female French voice
    'audioConfig' => ['audioEncoding' => 'MP3'],
  ];
  */

  // Portuguese voice 
  $request = [
    'input' => ['text' => $text],
    'voice' => ['languageCode' => 'pt-PT', 'name' => 'pt-PT-Wavenet-A'],
    'audioConfig' => ['audioEncoding' => 'MP3'],
  ];

  $options = [
    'http' => [
      'header' => "Content-type: application/json\r\n",
      'method' => 'POST',
      'content' => json_encode($request),
    ],
  ];

  $context = stream_context_create($options);
  $result = file_get_contents($url, false, $context);

  if ($result === FALSE) {
    return ['success' => false, 'error' => 'API call failed'];
  } else {
    $response = json_decode($result, true);
    if (isset($response['audioContent'])) {
      $audioContent = base64_decode($response['audioContent']);
      file_put_contents($filename, $audioContent);
      return ['success' => true, 'filename' => $filename];
    } else {
      return ['success' => false, 'error' => $response];
    }
  }
}
?>