/**
 * this module provides common functions to work with a JSXGraph-Board.
 * If a function in this module should manipulate a JSX-Board, the board should be the
 * first parameter in funtion's argument list.
 * */

import {download} from './dfhi-dom.js';

export function exportBoard(board, filename) {
    console.log("exportBoard called");
    if( !filename) {
        filename = guestFilename();
    }
    let svgCode = new XMLSerializer().serializeToString(board.renderer.svgRoot);
    console.log("svgCode ready");
    download(filename, svgCode, "image/svg+xml");
}

function guestFilename() {
    try {
        let title = document.title || "export-jsxgraph";
        if (title) {
            title = title.replace(/\s+/g, '-');
        }
        return `${title}.svg`;
    } catch (e)    {
        return "export-jsxgraph.svg";
    }
}

export function toggleAxis(board) {
    try {
        const currentAxis =  board.attr['axis'];
        console.log(board);
        board.attr['axis'] = ! currentAxis;
    }catch(e) {
        console.error(e);
    }
}