<?php

/* Count pages of PDF attachments by calling Go service */

class PageCounter {

	/**
	 * Count the number of pages in a PDF file by calling the Go service.
	 * Returns the page count or null if unable to determine.
	 */
	function count($file) {
		if (!file_exists($file) || !is_readable($file)) {
			return null;
		}

		try {
			// Get the Go base URL from config
			App::import('Controller', 'App');
			$appController = new AppController();
			$goBaseUrl = $appController::getGoBaseUrlOrFail();
			$goEndpoint = $goBaseUrl . '/go/pdf/count-pages';

			// Call the Go page counter endpoint
			$payload = array('file_path' => $file);

			$ch = curl_init($goEndpoint);
			curl_setopt($ch, CURLOPT_POST, true);
			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
			curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
			curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($payload));
			curl_setopt($ch, CURLOPT_TIMEOUT, 5);

			$response = curl_exec($ch);
			$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
			curl_close($ch);

			if ($httpCode >= 200 && $httpCode < 300) {
				$result = json_decode($response, true);
				if (isset($result['page_count']) && is_numeric($result['page_count'])) {
					$count = (int)$result['page_count'];
					return $count > 0 ? $count : null;
				}
			}

			return null;
		} catch (Exception $e) {
			// If Go service fails, return null gracefully
			return null;
		}
	}	
}

?>