// SCSS variables are information about icon's compiled state, stored under its original file name
//
// .icon-home {
//   width: $icon-home-width;
// }
//
// The large array-like variables contain all information about a single icon
// $icon-home: x y offset_x offset_y width height total_width total_height image_path;
//
// At the bottom of this section, we provide information about the spritesheet itself
// $spritesheet: width height image $spritesheet-sprites;
$sprite1-name: 'sprite1';
$sprite1-x: 0px;
$sprite1-y: 0px;
$sprite1-offset-x: 0px;
$sprite1-offset-y: 0px;
$sprite1-width: 50px;
$sprite1-height: 50px;
$sprite1-total-width: 100px;
$sprite1-total-height: 300px;
$sprite1-image: 'sprite.png';
$sprite1: (0px, 0px, 0px, 0px, 50px, 50px, 100px, 300px, 'sprite.png', 'sprite1', );
$sprite2-name: 'sprite2';
$sprite2-x: 0px;
$sprite2-y: 50px;
$sprite2-offset-x: 0px;
$sprite2-offset-y: -50px;
$sprite2-width: 50px;
$sprite2-height: 50px;
$sprite2-total-width: 100px;
$sprite2-total-height: 300px;
$sprite2-image: 'sprite.png';
$sprite2: (0px, 50px, 0px, -50px, 50px, 50px, 100px, 300px, 'sprite.png', 'sprite2', );
$sprite3-name: 'sprite3';
$sprite3-x: 0px;
$sprite3-y: 100px;
$sprite3-offset-x: 0px;
$sprite3-offset-y: -100px;
$sprite3-width: 100px;
$sprite3-height: 200px;
$sprite3-total-width: 100px;
$sprite3-total-height: 300px;
$sprite3-image: 'sprite.png';
$sprite3: (0px, 100px, 0px, -100px, 100px, 200px, 100px, 300px, 'sprite.png', 'sprite3', );
$icons-width: 100px;
$icons-height: 300px;
$icons-image: 'sprite.png';
$icons-sprites: ($sprite1, $sprite2, $sprite3, );
$icons: (100px, 300px, 'sprite.png', $icons-sprites, );

// The provided mixins are intended to be used with the array-like variables
//
// .icon-home {
//   @include sprite-width($icon-home);
// }
//
// .icon-email {
//   @include sprite($icon-email);
// }
//
// Example usage in HTML:
//
// `display: block` sprite:
// <div class="icon-home"></div>
//
// To change `display` (e.g. `display: inline-block;`), we suggest using a common CSS class:
//
// // CSS
// .icon {
//   display: inline-block;
// }
//
// // HTML
// <i class="icon icon-home"></i>
@mixin sprite-width($sprite) {
  width: nth($sprite, 5);
}

@mixin sprite-height($sprite) {
  height: nth($sprite, 6);
}

@mixin sprite-position($sprite) {
  $sprite-offset-x: nth($sprite, 3);
  $sprite-offset-y: nth($sprite, 4);
  background-position: $sprite-offset-x  $sprite-offset-y;
}

@mixin sprite-image($sprite) {
  $sprite-image: nth($sprite, 9);
  background-image: url(#{$sprite-image});
}

@mixin sprite($sprite) {
  @include sprite-image($sprite);
  @include sprite-position($sprite);
  @include sprite-width($sprite);
  @include sprite-height($sprite);
}

// The `sprites` mixin generates identical output to the CSS template
//   but can be overridden inside of SCSS
//
// @include sprites($spritesheet-sprites);
@mixin sprites($sprites) {
  @each $sprite in $sprites {
    $sprite-name: nth($sprite, 10);
    .#{$sprite-name} {
      @include sprite($sprite);
    }
  }
}