taipy/gui/scripts/install.js

require("dotenv").config();
const { exec, execSync } = require("child_process");
const { existsSync, writeFileSync, appendFileSync } = require("fs");
const { sep } = require("path");

const getGuiEnv = () =>
  execSync(process.platform === "win32" ? 'pip show taipy-gui | findStr "Location:"' : "pip show taipy-gui | grep Location:", {
    stdio: ["pipe", "pipe", "pipe"],
  })
    .toString()
    .trim()
    .substring(9)
    .trim();

let TAIPY_GUI_DIR = process.env.TAIPY_GUI_DIR;
if (!TAIPY_GUI_DIR) {
  TAIPY_GUI_DIR = getGuiEnv();
  if (existsSync(".env")) {
    appendFileSync(".env", `\nTAIPY_GUI_DIR=${TAIPY_GUI_DIR}`);
  } else {
    writeFileSync(".env", `TAIPY_GUI_DIR=${TAIPY_GUI_DIR}`);
  }
}

const taipy_webapp_dir = `${TAIPY_GUI_DIR}${sep}taipy${sep}gui${sep}webapp`;
if (!existsSync(taipy_webapp_dir)) {
  console.error(`Cannot find the Taipy GUI (${taipy_webapp_dir}) webapp directory.\nMake sure TAIPY_GUI_DIR is set properly as (${getGuiEnv()}).`);
  process.exit(1);
}

const spinner = "|/-\\";
let i = 0;

let spinnerTimer;

exec(`npm i ${taipy_webapp_dir}`)
  .on("spawn", () => {
    spinnerTimer = setInterval(() => {
      process.stdout.write("Installing the Taipy GUI library... \r" + spinner[i++]);
      i = i % spinner.length;
    }, 150);
  })
  .on("exit", (code, signal) => {
    clearInterval(spinnerTimer);
    if (code === 0) {
      console.log("\nInstallation finished");
    } else {
      console.log(`\nInstallation failed (code ${code}, signal ${signal})`);
    }
  });