index.js

const core = require('@actions/core');
const github = require('@actions/github');
const fs = require('fs');
const path = require('path');
const readmeBox = require('readme-box').ReadmeBox;
const chunk = require('chunk');

const generateCell = (cell) => {
    const objectFieldNames = JSON.parse(core.getInput('object-field-names'));
    let htmlCell = core.getInput('html-cell');

    objectFieldNames.forEach((name) => {
        htmlCell = htmlCell.replace(new RegExp(`{{ ${name} }}`), cell[name]);
    });
    console.log(objectFieldNames);
    console.log(htmlCell);
    return htmlCell;
}

const generateRow = (columns, row) => {
    const cells = row.map((cell) => generateCell(cell));

    if (cells.length < columns) {
        cells.push('<td></td>'.repeat(columns - cells.length));
    }

    return `<tr>${cells.join('')}</tr>`;
};

(async () => {
    const githubToken = core.getInput('github-token');
    const filePath = path.join(process.env.GITHUB_WORKSPACE, core.getInput('json-file-path'));
    const columns = core.getInput('columns');
    const data = fs.readFileSync(filePath, 'utf8');
    const json = JSON.parse(data);
    const fileToUsePath = core.getInput('file-to-use');
    const sectionName = core.getInput('section-name');

    try {
        const content = chunk(json, columns).map((row) => generateRow(columns, row));
        const table = `<table width="100%">${content.join('')}</table>`;

        await readmeBox.updateSection(table, {
            owner: process.env.GITHUB_REPOSITORY.split('/')[0],
            repo: process.env.GITHUB_REPOSITORY.split('/')[1],
            branch: process.env.GITHUB_REF.split('/')[2],
            token: githubToken,
            section: sectionName,
            path: fileToUsePath,
        });
    } catch (error) {
        core.setFailed(JSON.stringify(error));
        console.log(error);
    }
})();