/*
 * Backpack - Skyscanner's Design System
 *
 * Copyright 2016 Skyscanner Ltd
 *
 * Licensed 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 '~@skyscanner/bpk-svgs/index.scss';
@import '../bonds.scss';
@import './utils.scss';

@keyframes bpk-keyframe-spin {
  100% {
    transform: rotate(1turn);
  }
}

////
/// @group svgs
////

/// Icon factory.
///
/// @param {variable} $spacing
/// @param {key} $icon
///
/// @access private

@mixin _bpk-icon-factory($map, $size, $icon) {
  @if map_has_key($map, $icon) != true {
    $err: (
      'Could not find "' +
        $icon +
        '" icon. Refer to ' +
        'https://skyscanner.design/latest/components/icon/overview.html' +
        ' for the list of supported icons.'
    );

    @error $err;
  }

  content: '';
  display: inline-block;
  width: $size;
  height: $size;
  background: url(map-get($map, $icon)) no-repeat;
  background-size: cover;
}

/// Button alignment utility.
///
/// @access private

@mixin _bpk-svg--align-to-button() {
  vertical-align: text-bottom;
}

/// Large button alignment utility.
///
/// @access private

@mixin _bpk-svg--align-to-large-button() {
  margin-top: ($bpk-private-button-line-height - $bpk-icon-size-lg) / 2;
  vertical-align: top;
}

/// Icon.
///
/// > **Note:** You will need to pass the sassFunction `encodebase64` to your node-sass process to use this mixin:
/// >
/// > ```js
/// > var sass = require('node-sass');
/// > var sassFunctions = require('bpk-mixins/sass-functions');
/// > ...
/// > sass.render({
/// >   file: 'mysassfile.scss',
/// >   functions: sassFunctions,
/// > });
/// > ```
///
/// @param {key} $icon
/// @param {variable} $color
/// @param {key} $size
///
/// @example scss
///   .selector {
///     @include bpk-icon(flight, $bpk-color-sky-gray-tint-02, large);
///   }

@mixin bpk-icon($icon, $color, $size: small) {
  @if function-exists(encodebase64) != true {
    $err: (
      'Could not find encodebase64 function. Refer to ' +
        'https://backpack.github.io/sassdoc/#svgs-mixin-bpk-icon' +
        ' on how to provide it to node-sass.'
    );

    @error $err;
  }

  $icon-map: if($size == large, $bpk-icons-no-color-lg, $bpk-icons-no-color-sm);

  @if map_has_key($icon-map, $icon) != true {
    $err: (
      'Could not find "' +
        $icon +
        '" icon. Refer to' +
        'https://skyscanner.design/latest/components/icon/overview.html' +
        ' for the list of supported icons.'
    );

    @error $err;
  }

  $icon-size: if($size == large, $bpk-icon-size-lg, $bpk-icon-size-sm);

  /* Disabling rule here as this method is for newer sass versions that we don't yet support */
  /* stylelint-disable-next-line scss/no-global-function-names */
  $raw-svg: map-get($icon-map, $icon);
  $svg-string: str-replace($raw-svg, '$$COLOR$$', $color);
  $datauri: 'data:image/svg+xml;base64,' + encodebase64($svg-string);

  content: '';
  display: inline-block;
  width: $icon-size;
  height: $icon-size;
  background: url($datauri) no-repeat;
  background-size: cover;
}

/// Align to button. Modifies the bpk-icon-sm mixin.
///
/// @require {mixin} bpk-icon-sm
///
/// @example scss
///   .selector {
///     @include bpk-icon-sm(flight-sky-gray-tint-02);
///     @include bpk-icon-sm--align-to-button();
///   }

@mixin bpk-icon-sm--align-to-button() {
  @include _bpk-svg--align-to-button;
}

/// Align to large button. Modifies the bpk-icon-lg mixin.
///
/// @require {mixin} bpk-icon-lg
///
/// @example scss
///   .selector {
///     @include bpk-icon-lg(flight-sky-gray-tint-02);
///     @include bpk-icon-lg--align-to-large-button();
///   }

@mixin bpk-icon-lg--align-to-large-button() {
  @include _bpk-svg--align-to-large-button;
}

/// RTL support. Modifies the bpk-icon-sm or bpk-icon-lg mixin.
///
/// @require {mixin} bpk-icon-sm
/// @require {mixin} bpk-icon-lg
///
/// @example scss
///   .selector {
///     @include bpk-icon-sm(flight-sky-gray-tint-02);
///     @include bpk-icon--rtl-support();
///   }

@mixin bpk-icon--rtl-support() {
  @include bpk-rtl {
    transform: scaleX(-1);
  }
}

/// Small spinner.
///
/// @param {key} $spinner - The key of the desired SVG datauri from the $bpk-spinners map.
///
/// @example scss
///   .selector {
///     @include bpk-spinner(spinner-sky-gray-tint-02);
///   }

@mixin bpk-spinner($spinner: '') {
  width: bpk-spacing-base();
  height: bpk-spacing-base();
  animation: bpk-keyframe-spin 600ms linear infinite;

  @if $spinner != '' {
    content: '';
    display: inline-block;
    background: url(map-get($bpk-spinners, $spinner)) no-repeat;
    background-size: cover;
  }
}

/// Large spinner. Modifies the bpk-spinner mixin.
///
/// @require {mixin} bpk-spinner
///
/// @example scss
///   .selector {
///     @include bpk-spinner(spinner-sky-gray-tint-02);
///     @include bpk-spinner--lg();
///   }

@mixin bpk-spinner--lg() {
  width: bpk-spacing-lg();
  height: bpk-spacing-lg();
}

/// Extra large spinner. Modifies the bpk-spinner mixin.
///
/// @require {mixin} bpk-spinner
///
/// @example scss
///   .selector {
///     @include bpk-spinner(spinner-sky-gray-tint-02);
///     @include bpk-spinner--xl();
///   }

@mixin bpk-spinner--xl() {
  width: bpk-spacing-xl();
  height: bpk-spacing-xl();
}

/// Align spinner to button. Modifies the bpk-spinner mixin.
///
/// @require {mixin} bpk-spinner
///
/// @example scss
///   .selector {
///     @include bpk-spinner();
///     @include bpk-icon--align-to-button();
///   }

@mixin bpk-spinner--align-to-button() {
  vertical-align: baseline;
}

/// Align spinner to large button. Modifies the bpk-spinner mixin.
///
/// @require {mixin} bpk-spinner
///
/// @example scss
///   .selector {
///     @include bpk-spinner();
///     @include bpk-spinner--align-to-large-button();
///   }

@mixin bpk-spinner--align-to-large-button() {
  @include _bpk-svg--align-to-large-button;
}