<?php
// File: /classes/stt/class-aipkit-stt-google-provider-strategy.php

namespace WPAICG\STT; // Use new STT namespace

use WP_Error;

if (!defined('ABSPATH')) {
    exit; // Exit if accessed directly
}

/**
 * Google Cloud Speech-to-Text Provider Strategy (Placeholder).
 */
class AIPKit_STT_Google_Provider_Strategy extends AIPKit_STT_Base_Provider_Strategy {

    /**
     * Transcribe audio data to text (Placeholder).
     *
     * @param string $audio_data Binary audio data string.
     * @param string $audio_format The format/extension of the audio.
     * @param array $api_params API connection parameters.
     * @param array $options Transcription options.
     * @return string|WP_Error Transcribed text or WP_Error.
     */
    public function transcribe_audio(string $audio_data, string $audio_format, array $api_params, array $options = []): string|WP_Error {
        // Placeholder: Implement Google Cloud STT API call logic here.
        // Will involve sending audio content (possibly base64) and config JSON.
        return new WP_Error('not_implemented', __('Google STT not yet implemented.', 'gpt3-ai-content-generator'));
    }

    /**
     * Get supported audio input formats for Google Cloud STT.
     */
    public function get_supported_formats(): array {
        // Based on Google Cloud STT documentation (extensive list, simplified here)
        return ['flac', 'linear16', 'mulaw', 'amr', 'amr_wb', 'ogg_opus', 'speex_with_header_byte', 'mp3', 'webm_opus'];
    }

    /**
     * Get API headers required for Google STT requests.
     */
    public function get_api_headers(string $api_key, string $operation): array {
        // Google typically uses API key in URL, headers might just need Content-Type
         return [
             'Content-Type' => 'application/json',
         ];
    }
}