const path = require("path");
const jsonfile = require("jsonfile");
const semver = require("semver");
const execSync = require("child_process").execSync;
const rootDir = path.resolve(__dirname, "..");

const args = process.argv.slice(2);
const semverReleases = [
  "major",
  "minor",
  "patch",
  "premajor",
  "preminor",
  "prepatch",
  "prerelease"
];

/**
 * @param {*} cond
 * @param {string} message
 * @returns {asserts cond}
 */
function invariant(cond, message) {
  if (!cond) throw new Error(message);
}

/**
 * @returns {string}
 */
function getTaggedVersion() {
  let output = execSync("git tag --list --points-at HEAD").toString();
  return output.replace(/^v|\n+$/g, "");
}

/**
 *
 * @param {SemverRelease} [semverRelease]
 */
function bumpVersion(semverRelease = "patch") {
  // lerna version --no-push --exact
  execSync(`yarn lerna version ${semverRelease} --no-push --exact --yes`);
}

/**
 * @param {SemverRelease} [semverRelease]
 */
async function ensureReleaseName(semverRelease = "patch") {
  invariant(
    semverReleases.includes(semverRelease),
    `Invalid release keyword. Please use one of the following:\n - ${semverReleases.join(
      "\n  - "
    )}`
  );
}

/**
 * @param {string} packageName
 * @param {string|number} version
 */
async function ensureBuildVersion(packageName, version) {
  let file = path.join(rootDir, "packages", packageName, "package.json");
  let json = await jsonfile.readFile(file);
  invariant(
    json.version === version,
    `Package ${packageName} is on version ${json.version}, but should be on ${version}`
  );
}

/**
 * @param {string} packageName
 * @param {string} tag
 */
function publishBuild(packageName, tag) {
  let buildDir = path.join(rootDir, "packages", packageName);
  console.log();
  console.log(`  npm publish ${buildDir} --tag ${tag}`);
  console.log();
  execSync(`npm publish ${buildDir} --tag ${tag}`, { stdio: "inherit" });
}

/**
 * @param {SemverRelease|null} [semverRelease]
 * @returns {Promise<1 | 0>}
 */
async function run(semverRelease) {
  try {
    // 0. Update the release version with a git tag + commit
    bumpVersion(semverRelease);

    console.log();
    console.error(`  Updated all packages 🥳`);
    console.log();
  } catch (error) {
    console.log();
    console.error(`  ${error.message}`);
    console.log();
    return 1;
  }

  return 0;
}

run().then(code => {
  process.exit(code);
});

/**
 * @typedef {'major'|'minor'|'patch'|'premajor'|'preminor'|'prepatch'|'prerelease'} SemverRelease
 */