import { sync as spawnSync } from 'cross-spawn';
import { telemetry } from '@storybook/telemetry';
import semver, { eq, lt, prerelease } from 'semver';
import { logger } from '@storybook/node-logger';
import { withTelemetry } from '@storybook/core-server';
import {
  UpgradeStorybookToLowerVersionError,
  UpgradeStorybookToSameVersionError,
  UpgradeStorybookUnknownCurrentVersionError,
} from '@storybook/core-events/server-errors';

import chalk from 'chalk';
import dedent from 'ts-dedent';
import boxen from 'boxen';
import type { JsPackageManager, PackageManagerName } from '@storybook/core-common';
import {
  isCorePackage,
  versions,
  getStorybookInfo,
  loadMainConfig,
  JsPackageManagerFactory,
} from '@storybook/core-common';
import { automigrate } from './automigrate/index';
import { autoblock } from './autoblock/index';

type Package = {
  package: string;
  version: string;
};

const versionRegex = /(@storybook\/[^@]+)@(\S+)/;
export const getStorybookVersion = (line: string) => {
  if (line.startsWith('npm ')) return null;
  const match = versionRegex.exec(line);
  if (!match || !semver.clean(match[2])) return null;
  return {
    package: match[1],
    version: match[2],
  };
};

const getInstalledStorybookVersion = async (packageManager: JsPackageManager) => {
  const installations = await packageManager.findInstallations(Object.keys(versions));
  if (!installations) {
    return;
  }

  return Object.entries(installations.dependencies)[0]?.[1]?.[0].version;
};

const deprecatedPackages = [
  {
    minVersion: '6.0.0-alpha.0',
    url: 'https://github.com/storybookjs/storybook/blob/next/MIGRATION.md#60-deprecations',
    deprecations: [
      '@storybook/addon-notes',
      '@storybook/addon-info',
      '@storybook/addon-contexts',
      '@storybook/addon-options',
      '@storybook/addon-centered',
    ],
  },
];

const formatPackage = (pkg: Package) => `${pkg.package}@${pkg.version}`;

const warnPackages = (pkgs: Package[]) =>
  pkgs.forEach((pkg) => logger.warn(`- ${formatPackage(pkg)}`));

export const checkVersionConsistency = () => {
  const lines = spawnSync('npm', ['ls'], { stdio: 'pipe', shell: true })
    .output.toString()
    .split('\n');
  const storybookPackages = lines
    .map(getStorybookVersion)
    .filter((item): item is NonNullable<typeof item> => !!item)
    .filter((pkg) => isCorePackage(pkg.package));
  if (!storybookPackages.length) {
    logger.warn('No storybook core packages found.');
    logger.warn(`'npm ls | grep storybook' can show if multiple versions are installed.`);
    return;
  }
  storybookPackages.sort((a, b) => semver.rcompare(a.version, b.version));
  const latestVersion = storybookPackages[0].version;
  const outdated = storybookPackages.filter((pkg) => pkg.version !== latestVersion);
  if (outdated.length > 0) {
    logger.warn(
      `Found ${outdated.length} outdated packages (relative to '${formatPackage(
        storybookPackages[0]
      )}')`
    );
    logger.warn('Please make sure your packages are updated to ensure a consistent experience.');
    warnPackages(outdated);
  }

  deprecatedPackages.forEach(({ minVersion, url, deprecations }) => {
    if (semver.gte(latestVersion, minVersion)) {
      const deprecated = storybookPackages.filter((pkg) => deprecations.includes(pkg.package));
      if (deprecated.length > 0) {
        logger.warn(`Found ${deprecated.length} deprecated packages since ${minVersion}`);
        logger.warn(`See ${url}`);
        warnPackages(deprecated);
      }
    }
  });
};

export interface UpgradeOptions {
  skipCheck: boolean;
  packageManager?: PackageManagerName;
  dryRun: boolean;
  yes: boolean;
  force: boolean;
  disableTelemetry: boolean;
  configDir?: string;
}

export const doUpgrade = async ({
  skipCheck,
  packageManager: packageManagerName,
  dryRun,
  configDir: userSpecifiedConfigDir,
  yes,
  ...options
}: UpgradeOptions) => {
  const packageManager = JsPackageManagerFactory.getPackageManager({ force: packageManagerName });

  // If we can't determine the existing version fallback to v0.0.0 to not block the upgrade
  const beforeVersion = (await getInstalledStorybookVersion(packageManager)) ?? '0.0.0';

  const currentVersion = versions['@storybook/cli'];
  const isCanary =
    currentVersion.startsWith('0.0.0') ||
    beforeVersion.startsWith('portal:') ||
    beforeVersion.startsWith('workspace:');

  if (!isCanary && lt(currentVersion, beforeVersion)) {
    throw new UpgradeStorybookToLowerVersionError({ beforeVersion, currentVersion });
  }
  if (!isCanary && eq(currentVersion, beforeVersion)) {
    throw new UpgradeStorybookToSameVersionError({ beforeVersion });
  }

  const [latestVersion, packageJson] = await Promise.all([
    //
    packageManager.latestVersion('@storybook/cli'),
    packageManager.retrievePackageJson(),
  ]);

  const isOutdated = lt(currentVersion, latestVersion);
  const isPrerelease = prerelease(currentVersion) !== null;

  const borderColor = isOutdated ? '#FC521F' : '#F1618C';

  const messages = {
    welcome: `Upgrading Storybook from version ${chalk.bold(beforeVersion)} to version ${chalk.bold(
      currentVersion
    )}..`,
    notLatest: chalk.red(dedent`
      This version is behind the latest release, which is: ${chalk.bold(latestVersion)}!
      You likely ran the upgrade command through npx, which can use a locally cached version, to upgrade to the latest version please run:
      ${chalk.bold('npx storybook@latest upgrade')}
      
      You may want to CTRL+C to stop, and run with the latest version instead.
    `),
    prelease: chalk.yellow('This is a pre-release version.'),
  };

  logger.plain(
    boxen(
      [messages.welcome]
        .concat(isOutdated && !isPrerelease ? [messages.notLatest] : [])
        .concat(isPrerelease ? [messages.prelease] : [])
        .join('\n'),
      { borderStyle: 'round', padding: 1, borderColor }
    )
  );

  let results;

  const { configDir: inferredConfigDir, mainConfig: mainConfigPath } = getStorybookInfo(
    packageJson,
    userSpecifiedConfigDir
  );
  const configDir = userSpecifiedConfigDir || inferredConfigDir || '.storybook';

  const mainConfig = await loadMainConfig({ configDir });

  // GUARDS
  if (!beforeVersion) {
    throw new UpgradeStorybookUnknownCurrentVersionError();
  }

  // BLOCKERS
  if (
    !results &&
    typeof mainConfig !== 'boolean' &&
    typeof mainConfigPath !== 'undefined' &&
    !options.force
  ) {
    const blockResult = await autoblock({
      packageManager,
      configDir,
      packageJson,
      mainConfig,
      mainConfigPath,
    });
    if (blockResult) {
      results = { preCheckFailure: blockResult };
    }
  }

  // INSTALL UPDATED DEPENDENCIES
  if (!dryRun && !results) {
    const toUpgradedDependencies = (deps: Record<string, any>) => {
      const monorepoDependencies = Object.keys(deps || {}).filter((dependency) => {
        // only upgrade packages that are in the monorepo
        return dependency in versions;
      }) as Array<keyof typeof versions>;
      return monorepoDependencies.map((dependency) => {
        let char = '^';
        if (isOutdated) {
          char = '';
        }
        if (isCanary) {
          char = '';
        }
        /* add ^ modifier to the version if this is the latest stable or prerelease version
           example outputs: @storybook/react@^8.0.0 */
        return `${dependency}@${char}${versions[dependency]}`;
      });
    };

    const upgradedDependencies = toUpgradedDependencies(packageJson.dependencies);
    const upgradedDevDependencies = toUpgradedDependencies(packageJson.devDependencies);

    logger.info(`Updating dependencies in ${chalk.cyan('package.json')}..`);
    if (upgradedDependencies.length > 0) {
      await packageManager.addDependencies(
        { installAsDevDependencies: false, skipInstall: true, packageJson },
        upgradedDependencies
      );
    }
    if (upgradedDevDependencies.length > 0) {
      await packageManager.addDependencies(
        { installAsDevDependencies: true, skipInstall: true, packageJson },
        upgradedDevDependencies
      );
    }
    await packageManager.installDependencies();
  }

  // AUTOMIGRATIONS
  if (!skipCheck && !results && mainConfigPath) {
    checkVersionConsistency();
    results = await automigrate({
      dryRun,
      yes,
      packageManager,
      configDir,
      mainConfigPath,
      beforeVersion,
      storybookVersion: currentVersion,
      isUpgrade: true,
    });
  }

  // TELEMETRY
  if (!options.disableTelemetry) {
    const { preCheckFailure, fixResults } = results || {};
    const automigrationTelemetry = {
      automigrationResults: preCheckFailure ? null : fixResults,
      automigrationPreCheckFailure: preCheckFailure || null,
    };

    await telemetry('upgrade', {
      beforeVersion,
      afterVersion: currentVersion,
      ...automigrationTelemetry,
    });
  }
};

export async function upgrade(options: UpgradeOptions): Promise<void> {
  await withTelemetry('upgrade', { cliOptions: options }, () => doUpgrade(options));
}