generate-pages.js

const fs = require('fs');
const uglify = require('uglify-js');

(async () => {
    console.log('Creating bookmarklet from tam-drawio.js');
    console.log('==================================');
    console.log('Reading tam-drawio.js');
    const code = await fs.promises.readFile('tam-drawio.js', 'utf8');

    console.log('Minifying code')
    const result = uglify.minify(code);
    if (result.error) {
        return console.error(result.error);
    }

    console.log('Reading resources/index.template.html');
    const html = await fs.promises.readFile('resources/index.template.html', 'utf8');

    console.log('Writing docs/index.html');
    const escapeMap = {
        '"': '"',
        '<': '&#60;',
        '>': '&#62;',
        '\\': '&#92;'
    };
    const escapedScript = result.code.split('').map(c => escapeMap[c] ?? c).join('');
    const base64EncodedScript = btoa(result.code);
    await fs.promises.writeFile(
        'docs/index.html',
        html
            .replace(/<!-- bookmarklet start \/-->.+?<!-- bookmarklet end \/-->/gim, `<a class="link-button" href="javascript:${escapedScript}">Add TAM Plugin</a>`)
            .replace(/<!-- download start \/-->.+?<!-- download end \/-->/gim, `<a class="link-button" href="data:application/javascript;base64,${base64EncodedScript}" download="tam-drawio">Download TAM Plugin</a>`)
    );

    console.log('==================================');
    console.log('Done!');
})();