/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

import type {NewPlugin} from 'pretty-format';

export const serialize: NewPlugin['serialize'] = (
  val,
  config,
  indentation,
  depth,
  refs,
  printer,
): string => {
  // Serialize a non-default name, even if config.printFunctionName is false.
  const name = val.getMockName();
  const nameString = name === 'jest.fn()' ? '' : ` ${name}`;

  let callsString = '';
  if (val.mock.calls.length !== 0) {
    const indentationNext = indentation + config.indent;
    callsString = ` {${config.spacingOuter}${indentationNext}"calls": ${printer(
      val.mock.calls,
      config,
      indentationNext,
      depth,
      refs,
    )}${config.min ? ', ' : ','}${
      config.spacingOuter
    }${indentationNext}"results": ${printer(
      val.mock.results,
      config,
      indentationNext,
      depth,
      refs,
    )}${config.min ? '' : ','}${config.spacingOuter}${indentation}}`;
  }

  return `[MockFunction${nameString}]${callsString}`;
};

export const test: NewPlugin['test'] = val => val && !!val._isMockFunction;

const plugin: NewPlugin = {serialize, test};

export default plugin;
