airbnb/caravel

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
import { headerFontSize, subheaderFontSize } from '../sharedControls';

const headerFontSizes = [16, 20, 30, 48, 60];
const comparisonFontSizes = [16, 20, 26, 32, 40];

const headerProportionValues =
  headerFontSize.config.options.map(
    (option: { label: string; value: number }) => option.value,
  ) ?? [];

const subheaderProportionValues =
  subheaderFontSize.config.options.map(
    (option: { label: string; value: number }) => option.value,
  ) ?? [];

const getFontSizeMapping = (
  proportionValues: number[],
  actualSizes: number[],
) =>
  proportionValues.reduce((acc, value, index) => {
    acc[value] = actualSizes[index] ?? actualSizes[actualSizes.length - 1];
    return acc;
  }, {});

const headerFontSizesMapping = getFontSizeMapping(
  headerProportionValues,
  headerFontSizes,
);

const comparisonFontSizesMapping = getFontSizeMapping(
  subheaderProportionValues,
  comparisonFontSizes,
);

export const getHeaderFontSize = (proportionValue: number) =>
  headerFontSizesMapping[proportionValue] ??
  headerFontSizes[headerFontSizes.length - 1];

export const getComparisonFontSize = (proportionValue: number) =>
  comparisonFontSizesMapping[proportionValue] ??
  comparisonFontSizes[comparisonFontSizes.length - 1];