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

header('Content-Type: application/json; charset=utf-8');

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

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

    // Esempi:
    // rapporto_by_codice_expand_step.php?codice=2541111&step=base
    // rapporto_by_codice_expand_step.php?codice=2541111&step=files
    // rapporto_by_codice_expand_step.php?codice=2541111&step=campioni
    // rapporto_by_codice_expand_step.php?codice=2541111&step=files_campioni

    $codiceRapporto = trim($_GET['codice'] ?? '');
    $step = trim($_GET['step'] ?? 'base');

    if ($codiceRapporto === '') {
        throw new Exception("Parametro codice mancante. Usa ?codice=2541111");
    }

    $allowedSteps = [
        'base' => '',
        'files' => 'RapportiFiles',
        'allegati' => 'RapportiAllegati',
        'campioni' => 'CampioniDatiRapporto',
        'files_campioni' => 'RapportiFiles,CampioniDatiRapporto'
    ];

    if (!array_key_exists($step, $allowedSteps)) {
        throw new Exception("Step non valido. Usa: " . implode(', ', array_keys($allowedSteps)));
    }

    // Escape OData per eventuali apostrofi
    $codiceRapportoSafe = str_replace("'", "''", $codiceRapporto);

    /*
     * STEP 1 - Trova IdRapporto partendo da CodiceRapporto.
     * Query leggera, con $select e $top=1.
     */
    $searchParams = [
        '$filter' => "CodiceRapporto eq '{$codiceRapportoSafe}'",
        '$select' => 'IdRapporto,CodiceRapporto,Data,Versione,Firmato,DataStampa',
        '$top' => 1
    ];

    $searchEndpoint = "Rapporto?" . http_build_query($searchParams);

    $searchData = $api->get($searchEndpoint);

    $items = $searchData['value'] ?? [];

    if (!is_array($items) || count($items) === 0) {
        echo json_encode([
            'success' => false,
            'message' => 'Nessun rapporto trovato per questo CodiceRapporto.',
            'codice_rapporto' => $codiceRapporto,
            'search_endpoint' => $searchEndpoint,
            'search_data' => $searchData
        ], JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
        exit;
    }

    $rapportoBase = $items[0];
    $rapportoId = intval($rapportoBase['IdRapporto'] ?? 0);

    if (!$rapportoId) {
        throw new Exception("IdRapporto non trovato nella risposta.");
    }

    /*
     * STEP 2 - Se step=base, restituisco solo la ricerca base.
     */
    if ($step === 'base') {
        echo json_encode([
            'success' => true,
            'codice_rapporto' => $codiceRapporto,
            'id_rapporto' => $rapportoId,
            'step' => $step,
            'search_endpoint' => $searchEndpoint,
            'rapporto_base' => $rapportoBase
        ], JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
        exit;
    }

    /*
     * STEP 3 - Espande SOLO il rapporto trovato.
     */
    $expandValue = $allowedSteps[$step];

    $detailParams = [
        '$expand' => $expandValue
    ];

    $detailEndpoint = "Rapporto({$rapportoId})?" . http_build_query($detailParams);

    file_put_contents(
        __DIR__ . '/last_rapporto_by_codice_expand_endpoint.txt',
        '[' . date('Y-m-d H:i:s') . '] SEARCH: ' . $searchEndpoint . PHP_EOL .
            '[' . date('Y-m-d H:i:s') . '] DETAIL: ' . $detailEndpoint . PHP_EOL,
        FILE_APPEND
    );

    $detailData = $api->get($detailEndpoint);

    file_put_contents(
        __DIR__ . "/rapporto_codice_{$codiceRapportoSafe}_{$step}.json",
        json_encode([
            'search' => $searchData,
            'detail' => $detailData
        ], JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE)
    );

    echo json_encode([
        'success' => true,
        'codice_rapporto' => $codiceRapporto,
        'id_rapporto' => $rapportoId,
        'step' => $step,
        'search_endpoint' => $searchEndpoint,
        'detail_endpoint' => $detailEndpoint,
        'rapporto_base' => $rapportoBase,
        'data' => $detailData
    ], JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
} catch (Exception $e) {
    file_put_contents(
        __DIR__ . '/error_log.txt',
        date('Y-m-d H:i:s') . ' - ' . $e->getMessage() . PHP_EOL,
        FILE_APPEND
    );

    http_response_code(500);

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