/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 - present Instructure, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import type { MaskTheme } from '@instructure/shared-types'
import type { MaskProps, MaskStyle } from './props'

/**
 * ---
 * private: true
 * ---
 * Generates the style object from the theme and provided additional information
 * @param  {Object} componentTheme The theme variable object.
 * @param  {Object} props the props of the component, the style is applied to
 * @param  {Object} state the state of the component, the style is applied to
 * @return {Object} The final style object, which will be used in the component
 */
const generateStyle = (
  componentTheme: MaskTheme,
  props: MaskProps
): MaskStyle => {
  const { placement, fullscreen } = props

  const positionStyles = fullscreen
    ? { position: 'fixed' }
    : { position: 'absolute' }

  const placementStyles = {
    top: { alignItems: 'flex-start' },
    center: { alignItems: 'center' },
    bottom: { alignItems: 'flex-end' },
    stretch: { alignItems: 'stretch' }
  }

  return {
    mask: {
      label: 'mask',
      boxSizing: 'border-box',
      background: componentTheme.background,
      top: 0,
      left: 0,
      right: 0,
      bottom: 0,
      overflow: 'auto',
      display: 'flex',
      justifyContent: 'center',
      outline: 'none',
      border: `${componentTheme.borderWidth} solid ${componentTheme.borderColor}`,
      borderRadius: componentTheme.borderRadius,
      '&:focus': {
        borderColor: componentTheme.focusBorderColor
      },
      zIndex: componentTheme.zIndex,
      ...positionStyles,
      ...placementStyles[placement!]
    }
  }
}

export default generateStyle