<?php

namespace classes;
require_once WD . '/modules/licenseplaterecognizer/licenseplaterecognizer_c.php';

use Exception;
use interfaces\licenseplaterecognizer_i;
use licenseplaterecognizer\licenseplaterecognizer_c;

class licenseplaterecognizer implements licenseplaterecognizer_i
{
    /**
     * The configuration of the module
     * @var licenseplaterecognizer_c
     */
    public licenseplaterecognizer_c $config;
    /**
     * API URL
     * @var string
     */
    private string $api_url = 'https://api.platerecognizer.com/v1/plate-reader/';


    public function __construct()
    {
        $this->config = new licenseplaterecognizer_c();
    }


    /**
     * @inheritDoc
     */
    public function requireModuleEnabled(): void
    {
        if (!(bool)$this->config->enabled->getVariableValue()) {
            throw new Exception('licenseplaterecognizer module is not enabled.');
        }
    }

    /**
     * @inheritDoc
     * @throws Exception If the module is not enabled or if there is an error in the API request
     * @throws Exception If the API response cannot be parsed
     */
    public function licenseplaterecognizer(string $base64_image): array
    {
        $image_processor = new image_processor();

        //ADD PARAMETER IN REQUEST LIKE regions
        $data = array(
            'upload' => $base64_image,
            'regions' => 'us-ca' // Optional
        );

        // Prepare new cURL resource
        $ch = curl_init('https://api.platerecognizer.com/v1/plate-reader/');
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLINFO_HEADER_OUT, true);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2TLS);

        // Set HTTP Header for POST request
        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
                "Authorization: Token " . $this->config->api_key->getVariableValue()
            )
        );

        // Submit the POST request and close cURL session handle
        $result = curl_exec($ch);
        curl_close($ch);

        $response_data = json_decode($result, true);
        if (isset($response_data['results']) && count($response_data['results']) > 0) {
            return [
                'success' => true,
                'license_plate_number' => $response_data['results'][0]['plate'] ?? null,
                'confidence' => $response_data['results'][0]['score'] ?? null,
                'raw_response' => $response_data,
            ];
        } else {
            return [
                'success' => false,
                'message' => 'No license plate detected.',
                'raw_response' => $response_data,
            ];
        }
    }
}