import {promises as fsp} from 'fs';
import {join} from 'path';
import prompts from 'prompts';
import semver from 'semver';

export interface Versions {
  [index: string]: string;
  'css-custom-properties': string;
  firefox: string;
  kitty: string;
  'sublime-text': string;
  tauon: string;
  vscode: string;
}

export async function main(): Promise<void> {
  const versions: Versions = await getVersions();

  const command = await prompts({
    message: 'What do you want to do?',
    name: 'command',
    type: 'select',
    choices: [
      {
        title: 'Show',
        value: 'show'
      },
      {
        title: 'Update',
        value: 'update'
      }
    ],
    initial: 0
  });
  if (command.command === 'show') {
    console.log(versions);
    return;
  }

  if (command.command === 'update') {
    const whichTheme = await prompts({
      message: 'Which theme do you want to update?',
      name: 'theme',
      type: 'select',
      choices: Object.keys(versions).map((value) => ({
        title: `${value} (${String(versions[value])})`,
        value
      })),
      initial: 0
    });

    const currentVersion: string = versions[whichTheme.theme];
    const whichVersion = await prompts({
      message: 'To what version do you want to update?',
      name: 'version',
      type: 'select',
      choices: [
        {
          title: `Major (${currentVersion} -> ${semver.inc(
            currentVersion,
            'major'
          )!})`,
          value: 'major'
        },
        {
          title: `Minor (${currentVersion} -> ${semver.inc(
            currentVersion,
            'minor'
          )!})`,
          value: 'minor'
        },
        {
          title: `Patch (${currentVersion} -> ${semver.inc(
            currentVersion,
            'patch'
          )!})`,
          value: 'patch'
        }
      ],
      initial: 0
    });

    const selectedTheme: string = whichTheme.theme;
    const newVersion: string = semver.inc(
      currentVersion,
      whichVersion.version
    )!;
    versions[selectedTheme] = newVersion;
    await fsp.writeFile(
      join(__dirname, '../../love-versions.json'),
      JSON.stringify(versions, null, 2) + '\n'
    );

    if (['vscode'].includes(selectedTheme)) {
      const packageLocation: string = join(
        __dirname,
        `../${selectedTheme}/package.json`
      );
      const themePackage: any = JSON.parse(
        await fsp.readFile(packageLocation, 'utf8')
      );
      themePackage.version = newVersion;
      await fsp.writeFile(
        packageLocation,
        JSON.stringify(themePackage, null, 2) + '\n'
      );
    }
  }
}

export async function getVersions(): Promise<Versions> {
  return JSON.parse(
    await fsp.readFile(join(__dirname, '../../love-versions.json'), 'utf8')
  );
}

if (require.main === module) {
  void main();
}