/* eslint-disable no-console */
import chalk from 'chalk';
import pick from 'lodash/pick';
import path from 'path';

import { ValidateCommandOptions } from '../validate.types';

import { globToRegex } from './utils/globToRegex';
import { DepCheckFunctionProps, externalDependencies } from './config';
import {
  isDependencyOnlyUsedInTestFile,
  sortDependenciesByUsage,
} from './utils';

/**
 * Ensure every dependency listed as `dependencies`
 * are used in _at least one_ non-test file
 *
 * @returns An array of packages that are listed as `dependencies`,
 * but are only used in test files
 */
export function validateListedDependencies(
  { pkgName, pkgJson, importedPackages }: DepCheckFunctionProps,
  options?: Partial<ValidateCommandOptions>,
): Array<string> {
  const { verbose } = options ?? { verbose: false };

  const { dependencies: importedPackagesInSourceFile } =
    sortDependenciesByUsage(importedPackages, pkgName);

  const { dependencies: _listedDepObj } = pick(pkgJson, ['dependencies']);
  const listedDependencies = _listedDepObj ? Object.keys(_listedDepObj) : [];

  const anyListedDependencyUsedInTestFile = listedDependencies.some(listedDep =>
    isDependencyOnlyUsedInTestFile(listedDep, importedPackages),
  );

  if (listedDependencies.length && anyListedDependencyUsedInTestFile) {
    const listedButOnlyUsedAsDev = listedDependencies.filter(
      listedDepName =>
        !importedPackagesInSourceFile.includes(listedDepName) &&
        !externalDependencies.some(glob => {
          const regEx = globToRegex(glob);
          return regEx.test(listedDepName);
        }),
    );

    if (listedButOnlyUsedAsDev.length && verbose) {
      console.log(
        `${chalk.blue(
          pkgName,
        )}: lists packages as dependency, but only uses them in test files`,
      );
      console.log(
        listedButOnlyUsedAsDev
          .map(
            depName =>
              `\t${depName}: \n\t\t${importedPackages?.[depName]
                ?.map((file: string) =>
                  file.replace(path.join(__dirname, '..'), ''),
                )
                .join('\n\t\t')}`,
          )
          .join('\n'),
      );
    }

    return listedButOnlyUsedAsDev;
  }

  return [];
}