import fse from 'fs-extra';
import { join } from 'node:path';
import color from 'picocolors';
import enquirer from 'enquirer';
import { consola } from '../common/logger.js';
import { getPackageManager } from '../common/manager.js';
import { execSync } from 'child_process';

function logCurrentVersion(cwd: string) {
  const pkgJson = join(cwd, 'package.json');
  const pkg = fse.readJSONSync(pkgJson);
  consola.success(`${color.bold('Current package:')} ${color.green(pkg.name)}`);
  consola.success(
    `${color.bold('Current version:')} ${color.green(pkg.version)}`,
  );
  return {
    pkgName: pkg.name,
    currentVersion: pkg.version,
  };
}

async function getNewVersion() {
  const { version } = await enquirer.prompt<{ version: string }>({
    type: 'input',
    name: 'version',
    message: 'Version to release:',
  });
  return version;
}

function getNpmTag(version: string, forceTag?: string) {
  let tag: string;

  if (forceTag) {
    tag = forceTag;
  } else if (version.includes('beta')) {
    tag = 'beta';
  } else if (version.includes('alpha')) {
    tag = 'alpha';
  } else if (version.includes('rc')) {
    tag = 'rc';
  } else {
    tag = 'latest';
  }

  consola.success(`${color.bold('Npm tag:')} ${color.green(tag)}`);

  return tag;
}

function setPkgVersion(version: string, cwd: string) {
  const pkgJson = join(cwd, 'package.json');
  const pkg = fse.readJSONSync(pkgJson);
  pkg.version = version;
  fse.writeJSONSync(pkgJson, pkg, { spaces: 2 });
}

function buildPackage(packageManager: string) {
  const command = `${packageManager} run build`;
  consola.success(`${color.bold('Build package:')} ${color.green(command)}`);
  execSync(command, { stdio: 'inherit' });
}

function generateChangelog() {
  execSync('vant-cli changelog', { stdio: 'inherit' });
}

function publishPackage(packageManager: string, tag: string) {
  let command = `${packageManager} publish --tag ${tag}`;

  if (packageManager === 'pnpm') {
    command += ' --no-git-checks';
  }

  execSync(command, { stdio: 'inherit' });
}

function commitChanges(pkgName: string, version: string, gitTag?: boolean) {
  const message = `release: ${pkgName} v${version}`;
  execSync(`git add -A && git commit -m "${message}"`, { stdio: 'inherit' });

  if (gitTag) {
    execSync(`git tag -a v${version} -m "${message}"`, { stdio: 'inherit' });
  }
}

function getCurrentBranch() {
  const branch = execSync('git rev-parse --abbrev-ref HEAD').toString().trim();
  return branch;
}

function pushChanges(gitTag?: boolean) {
  const branch = getCurrentBranch();
  execSync(`git push origin ${branch}`, { stdio: 'inherit' });

  if (gitTag) {
    execSync(`git push origin ${branch} --tags`, { stdio: 'inherit' });
  }
}

export async function release(command: { tag?: string; gitTag?: boolean }) {
  const cwd = process.cwd();
  const { pkgName, currentVersion } = logCurrentVersion(cwd);
  const version = await getNewVersion();
  const tag = getNpmTag(version, command.tag);
  const packageManager = getPackageManager();

  setPkgVersion(version, cwd);

  try {
    buildPackage(packageManager);
    generateChangelog();
  } catch (err) {
    consola.error('Failed to build package, rollback to the previous version.');
    setPkgVersion(currentVersion, cwd);
    throw err;
  }

  publishPackage(packageManager, tag);
  commitChanges(pkgName, version, command.gitTag);
  pushChanges(command.gitTag);
}