rollupcontroller.js

const { v4: uuidv4 } = require('uuid');
const fs = require("fs-extra");
const { zipProject } = require("./controller");

function handleRequests(req, res) {
  console.log("Configs obtained: ", req.body);
  const uuid = uuidv4();
  const stubs = "{" + createStubsForOnClick(req.body.conf).join(", ") + "}";
  generateProject(uuid, JSON.stringify(req.body.conf, null, 4), stubs);
  res.json({generated_project: uuid})
}


function createStubsForOnClick(config) {
  const alerter = (msg) => `() => alert("${msg}")`
  let stubs = [];
  Object.keys(config.props).forEach(key => {
    if (config.props[key].expr) {
      const expr = config.props[key].expr;
      const handler = expr.substring("$props.".length); 
      if (/^\$props.on[a-zA-Z]+$/.test(expr)) {
        stubs.push(`${handler}: ${alerter("handler of " + config.id + "," + config.type)}`)
      } else if (!config.props[key].map) {
        stubs.push(`${handler}: "${config.props[key].default}"`)
      } else {
        stubs.push(`${handler}: ${JSON.stringify(config.props[key].default)}`)
      }
    }
  })
  if (config.children.length > 0) {
    let childstubs = config.children.map(child => createStubsForOnClick(child, stubs)).flat(Infinity);
    stubs = stubs.concat(childstubs);
  }
  return stubs;
}

function generateProject(uuid, config, stubs) {
  fs.mkdirSync(`./outputs/${uuid}`);
  fs.mkdirSync(`./outputs/${uuid}/public`);
  fs.mkdirSync(`./outputs/${uuid}/src`);
  fs.copyFileSync('./index.html', `./outputs/${uuid}/public/index.html`);
  fs.copyFileSync(`./rollup.config.js`, `./outputs/${uuid}/rollup.config.js`);
  fs.copyFileSync(`./konvaMounter.js`, `./outputs/${uuid}/src/index.js`);
  fs.copyFileSync(`./konvapackages.json`, `./outputs/${uuid}/package.json`);
  fs.writeFileSync(`./outputs/${uuid}/src/appconfig.js`, 
    `
    export default ${config}
    `
  );
  fs.writeFileSync(`./outputs/${uuid}/src/toBeSuppliedByDevs.js`, 
    `export default ${stubs}`
  );
  zipProject(uuid);
}

module.exports = handleRequests;