sync

#!/usr/bin/env node

/**
 * Run this script (from root directory): npx babel-node scripts/sync
 *
 * This script is used to copy the following files to all exercises and keep
 * them in sync:
 *
 * - .eslintrc
 * - babel.config.js
 * - package.json (modified version)
 * - .npmrc
 *
 * There is a CI step which checks that package.json in root & exercises match
 * (see checksum script for more info).
 */

const shell = require("shelljs");
const assignment = shell.env["ASSIGNMENT"];
const helpers = require("./helpers");
const path = require("path");

function copyConfigForAssignment(assignment) {
  const destination = path.join("exercises", assignment);
  const assignmentPackageFilename = path.join(destination, "package.json");
  const assignmentVersion = getAssignmentVersion(assignmentPackageFilename);
  helpers.createExercisePackageJson(assignmentVersion);
  shell.cat("exercise-package.json").to(assignmentPackageFilename);
  shell.rm("exercise-package.json");

  shell.cp("babel.config.js", destination);
  shell.cp(".eslintrc", destination);
  shell.cp(".npmrc", destination);
}

function getAssignmentVersion(assignmentPackageFilename) {
  const packageFile = shell.cat(assignmentPackageFilename).toString();
  const packageJson = JSON.parse(packageFile);
  return packageJson["version"];
}

if (assignment) {
  shell.echo("Syncing " + assignment + "...");
  copyConfigForAssignment(assignment);
} else {
  shell.echo("Syncing all assignments...");
  helpers.assignments.forEach(copyConfigForAssignment);
}