<?php
namespace flow\social\publisher;
if (!defined('WPINC'))
	die;

/**
 * YouTube Publisher.
 *
 * Uploads videos to a YouTube channel via the YouTube Data API v3.
 *
 * Required scope: https://www.googleapis.com/auth/youtube.upload
 *
 * Endpoint:
 *   POST https://www.googleapis.com/upload/youtube/v3/videos
 *
 * Constraints:
 *   - Requires a video file (mp4, mov, etc.).
 *   - Supports resumable uploads for large files.
 *   - Metadata: title, description, tags, categoryId, privacyStatus.
 *
 * @package   FlowFlow
 * @author    Looks Awesome <email@looks-awesome.com>
 * @link      http://looks-awesome.com
 * @copyright Looks Awesome
 */
class FFYoutubePublisher extends FFBasePublisher {

	public function getNetwork() {
		return 'youtube';
	}

	/**
	 * @inheritDoc
	 */
	public function publish(array $postData) {
		$this->token = isset($postData['token']) ? $postData['token'] : '';
		$accountId   = isset($postData['account_id']) ? $postData['account_id'] : '';

		if (empty($this->token)) {
			return $this->errorResult('Missing YouTube/Google token.');
		}

		// YouTube requires a video file
		$media = isset($postData['media']) ? $postData['media'] : [];
		$hasVideo = false;
		foreach ($media as $item) {
			if (isset($item['type']) && $item['type'] === 'video') {
				$hasVideo = true;
				break;
			}
		}

		if (!$hasVideo) {
			return $this->errorResult('YouTube requires a video file to publish.');
		}

		$this->log('Publishing to YouTube', [
			'has_text'   => !empty($postData['text']),
			'media_count'=> count($media),
		]);

		$extra = isset($postData['extra']) ? $postData['extra'] : [];

		// TODO: Implement actual API call when ready
		// Step 1: POST metadata → /upload/youtube/v3/videos?uploadType=resumable&part=snippet,status
		// Step 2: Upload video binary to the resumable URI
		// Metadata: snippet.title, snippet.description, snippet.tags, status.privacyStatus

		return $this->errorResult('YouTube publishing is not yet implemented. API integration pending.');
	}
}
