Set the env var in circle project from a .env file

setEnv.js

const fs = require("fs");
const https = require("https");

/**
 *
 * Set the env var in circle project from a .env file
 *
 * usage:
 *
 * ```bash
 * node setEnv.js --project js13kGames/bot --token xxxx .env
 *
 * node setEnv.js --vcsType bb --project js13kGames/bot --token xxxx .env
 *
 * node setEnv.js --vcsType bb --username js13kGames --project bot --token xxxx .env
 *
 * ```
 */

// make the http call to set an env var in circle
const setEnvVar = (vcsType, username, project, token) => (name, value) =>
  new Promise((resolve, reject) => {
    const req = https.request(
      `https://circleci.com/api/v1.1/project/${vcsType}/${username}/${project}/envvar?circle-token=${token}`,
      { method: "POST", headers: { "content-type": "application/json" } },
      res => {
        if (res.statusCode.toString()[0] === "2") resolve();

        let b = "";
        res.on("data", c => (b += c.toString()));
        res.on("error", reject);
        res.on("end", () => reject(b));
      }
    );
    req.write(JSON.stringify({ name, value }));
    req.end();
  });

// match all regexp
const matchAll = (text, re) => {
  const matches = [];
  re.lastIndex = -1;
  let m;
  while ((m = re.exec(text))) {
    matches.push(m);
  }
  return matches;
};

// read env var from file
const readEnv = filename =>
  matchAll(
    fs.readFileSync(filename).toString(),
    /^ *([^#\s=]+) *=([^\n]*)$/gm
  ).map(([, name, value]) => ({ name, value: value.trim() }));

// read and arg
const readNamedArg = name => {
  const i = process.argv.findIndex(
    x => x === `--${name}` || x === `-${name[0]}`
  );
  return i === -1 ? undefined : process.argv[i + 1];
};

//
//

const run = async () => {
  // parse args
  const token = readNamedArg("token");
  const envFilename = process.argv.slice(-1)[0];

  const v = readNamedArg("vcsType");
  const u = readNamedArg("username");
  const p = readNamedArg("project");

  const s = p.split("/");

  const vcsType = (s.length === 3 && s[0]) || v || "gh";
  const username = (s.length === 3 && s[1]) || (s.length === 2 && s[0]) || u;
  const project = s.slice(-1)[0];

  // loop over env and set
  for (const { name, value } of readEnv(envFilename)) {
    console.log(name);
    await setEnvVar(vcsType, username, project, token)(name, value);
  }
};

run();