<?php
require_once dirname(__DIR__, 2) . '/vendor/autoload.php';
require_once dirname(__FILE__) . '/class/VisualLimsApiClient.class.php';

ini_set('display_errors', '0');
error_reporting(E_ALL);

/**
 * Uso:
 *   download_rapporto_file.php?id=123
 */

try {
    $api = VisualLimsApiClient::getInstance();

    $id = isset($_GET['id']) ? intval($_GET['id']) : 0;

    if (!$id) {
        throw new Exception("ID RapportoFile mancante");
    }

    $debugDir = __DIR__ . '/logs/lims_get_commessa/';

    if (!is_dir($debugDir)) {
        mkdir($debugDir, 0755, true);
    }

    /**
     * Recupero il record RapportoFile.
     */
    $data = $api->get("RapportoFile({$id})", []);

    file_put_contents(
        $debugDir . "rapporto_file_{$id}.json",
        json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE)
    );

    /**
     * Provo vari nomi campo possibili per il contenuto PDF.
     * Dopo il primo test potremo adattarlo al nome esatto.
     */
    $possibleContentFields = [
        'File',
        'file',
        'Content',
        'content',
        'FileContent',
        'fileContent',
        'Contenuto',
        'contenuto',
        'Bytes',
        'bytes'
    ];

    $base64 = null;

    foreach ($possibleContentFields as $field) {
        if (!empty($data[$field])) {
            $base64 = $data[$field];
            break;
        }
    }

    if (!$base64) {
        header('Content-Type: application/json; charset=utf-8');
        echo json_encode([
            'success' => false,
            'message' => 'Record RapportoFile recuperato, ma non ho trovato un campo base64 del PDF.',
            'hint' => 'Apri logs/lims_get_commessa/rapporto_file_' . $id . '.json e controlla il nome reale del campo file.',
            'data' => $data
        ], JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
        exit;
    }

    /**
     * Se il contenuto ha prefisso data URI, lo pulisco.
     */
    if (strpos($base64, 'base64,') !== false) {
        $parts = explode('base64,', $base64);
        $base64 = end($parts);
    }

    $pdfBinary = base64_decode($base64, true);

    if ($pdfBinary === false) {
        throw new Exception("Il contenuto trovato non è un base64 valido");
    }

    $filename = $data['NomeFile']
        ?? $data['nomeFile']
        ?? $data['FileName']
        ?? $data['fileName']
        ?? "rapporto_{$id}.pdf";

    if (!str_ends_with(strtolower($filename), '.pdf')) {
        $filename .= '.pdf';
    }

    header('Content-Type: application/pdf');
    header('Content-Disposition: inline; filename="' . basename($filename) . '"');
    header('Content-Length: ' . strlen($pdfBinary));

    echo $pdfBinary;
} catch (Exception $e) {
    http_response_code(500);
    header('Content-Type: application/json; charset=utf-8');

    echo json_encode([
        'success' => false,
        'error' => $e->getMessage()
    ], JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE);
}