<?php
$ruta = "../";
require_once "../include/bd_pdo.php";
global $db, $pdo;

try {
    // Begin transaction
    $pdo->beginTransaction();

    // Initialize arrays
    $ver = $_POST['lectura'] ?? [];
    $editar = $_POST['editar'] ?? [];

    // Only proceed if $ver and $editar are not empty
    if (empty($ver) && empty($editar)) {
        throw new Exception("Both arrays are empty.");
    }

    $completo = [];

    // Process $editar array
    foreach ($editar as $edit) {
        $edit_separado = explode("_", $edit);
        $completo[] = $edit_separado;
    }

    // Call the function to delete all permissions
    $db->query("SELECT fd_permiso()");

    // Process $ver array and merge with $completo
    foreach ($ver as $lectura) {
        $igual = false;
        $ver_separado = explode("_", $lectura);
        foreach ($completo as $comp) {
            if ($ver_separado[0] == $comp[0] && $ver_separado[1] == $comp[1]) {
                $igual = true;
                break;
            }
        }
        if (!$igual) {
            $completo[] = $ver_separado;
        }
    }

    // Insert the combined data into the 'permiso' table
    foreach ($completo as $actual) {
        $db->insert('permiso', [
            'pagina_id' => $actual[0],
            'rol_id' => $actual[1],
            'permiso_tipo' => $actual[2],
        ]);
    }

    // Commit the transaction
    $db->commit();

    // Redirect to permisos.php
    header("Location: ../permisos.php");
    exit();

} catch (Exception $e) {
    // Rollback the transaction on error
    $pdo->rollback();

    // Handle the error (for example, log it or show an error message)
    echo "An error occurred: " . $e->getMessage();
    exit();
}
?>