<?php
/**
 * Atlas-Tool: Sprachausgabe generieren mit ElevenLabs.
 *
 * NUR LOKAL ausführen. API-Key liegt in v2-platform/.env.local.
 *
 * Aufruf:
 *   php voice.php --text "..." --voice <pool-id> --output path/to/file.mp3 [--dry-run]
 *
 * Stimmen-Pool-IDs sind in voices.json zentral gepflegt. Module geben
 * Pool-ID an (z.B. "narrator-warm"), nicht direkt ElevenLabs-IDs.
 *
 * Status: Skelett — echte API-Call-Implementierung folgt.
 */

declare(strict_types=1);
require_once __DIR__ . '/../../php/config.php';

$opts = getopt('', ['text:', 'voice:', 'output:', 'dry-run']);
if (empty($opts['text']) || empty($opts['voice']) || empty($opts['output'])) {
    fwrite(STDERR, "Usage: php voice.php --text \"...\" --voice <pool-id> --output path.mp3 [--dry-run]\n");
    exit(1);
}

$text = $opts['text'];
$voicePoolId = $opts['voice'];
$output = $opts['output'];
$dryRun = isset($opts['dry-run']);

// === Pool-ID → ElevenLabs-ID auflösen ===
$voicesFile = __DIR__ . '/voices.json';
if (!file_exists($voicesFile)) {
    fwrite(STDERR, "[asset-gen/voice] FEHLER: voices.json fehlt in tools/asset-gen/\n");
    exit(2);
}
$voices = json_decode(file_get_contents($voicesFile), true);
if (!isset($voices[$voicePoolId])) {
    fwrite(STDERR, "[asset-gen/voice] FEHLER: Pool-ID '$voicePoolId' nicht in voices.json definiert.\n");
    fwrite(STDERR, "                  Verfügbar: " . implode(', ', array_keys($voices)) . "\n");
    exit(2);
}
$elevenlabsId = $voices[$voicePoolId]['elevenlabs_id'];

echo "[asset-gen/voice] Text:         " . substr($text, 0, 80) . (strlen($text) > 80 ? '…' : '') . "\n";
echo "[asset-gen/voice] Pool-ID:      $voicePoolId\n";
echo "[asset-gen/voice] ElevenLabs:   $elevenlabsId\n";
echo "[asset-gen/voice] Output:       $output\n";

if (empty(V2_ELEVENLABS_KEY)) {
    fwrite(STDERR, "[asset-gen/voice] FEHLER: ELEVENLABS_API_KEY nicht gesetzt.\n");
    exit(2);
}

if ($dryRun) {
    echo "[asset-gen/voice] --dry-run, würde TTS generieren.\n";
    exit(0);
}

// === TODO: echter API-Call ===
// $url = "https://api.elevenlabs.io/v1/text-to-speech/$elevenlabsId";
// $ch = curl_init($url);
// curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
// curl_setopt($ch, CURLOPT_HTTPHEADER, [
//     'xi-api-key: ' . V2_ELEVENLABS_KEY,
//     'Content-Type: application/json',
//     'Accept: audio/mpeg',
// ]);
// curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
//     'text' => $text,
//     'model_id' => 'eleven_multilingual_v2',
//     'voice_settings' => ['stability' => 0.55, 'similarity_boost' => 0.75],
// ]));
// $audio = curl_exec($ch);
// $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
// curl_close($ch);
// if ($code === 200 && $audio) {
//     @mkdir(dirname($output), 0775, true);
//     file_put_contents($output, $audio);
//     echo "[asset-gen/voice] OK: gespeichert nach $output\n";
//     exit(0);
// }
// fwrite(STDERR, "[asset-gen/voice] FEHLER: HTTP $code\n");
// exit(3);

fwrite(STDERR, "[asset-gen/voice] HINWEIS: Echter API-Call noch nicht implementiert. Stub liefert nichts.\n");
exit(0);