// Grid system
//
// Generate semantic grid columns with these mixins.

@mixin make-row($gutter: $grid-gutter-width) {
    --#{$prefix}gutter-x: #{$gutter};
    --#{$prefix}gutter-y: 0;
    display: flex;
    flex-wrap: wrap;
    // TODO: Revisit calc order after https://github.com/react-bootstrap/react-bootstrap/issues/6039 is fixed
    margin-top: calc(-1 * var(--#{$prefix}gutter-y)); // stylelint-disable-line function-disallowed-list
    margin-right: calc(-.5 * var(--#{$prefix}gutter-x)); // stylelint-disable-line function-disallowed-list
    margin-left: calc(-.5 * var(--#{$prefix}gutter-x)); // stylelint-disable-line function-disallowed-list
  }
  
  @mixin make-col-ready() {
    // Add box sizing if only the grid is loaded
    box-sizing: if(variable-exists(include-column-box-sizing) and $include-column-box-sizing, border-box, null);
    // Prevent columns from becoming too narrow when at smaller grid tiers by
    // always setting `width: 100%;`. This works because we set the width
    // later on to override this initial width.
    flex-shrink: 0;
    width: 100%;
    max-width: 100%; // Prevent `.col-auto`, `.col` (& responsive variants) from breaking out the grid
    padding-right: calc(var(--#{$prefix}gutter-x) * .5); // stylelint-disable-line function-disallowed-list
    padding-left: calc(var(--#{$prefix}gutter-x) * .5); // stylelint-disable-line function-disallowed-list
    margin-top: var(--#{$prefix}gutter-y);
  }
  
  @mixin make-col($size: false, $columns: $grid-columns) {
    @if $size {
      flex: 0 0 auto;
      width: percentage(divide($size, $columns));
  
    } @else {
      flex: 1 1 0;
      max-width: 100%;
    }
  }
  
  @mixin make-col-auto() {
    flex: 0 0 auto;
    width: auto;
  }
  
  @mixin make-col-offset($size, $columns: $grid-columns) {
    $num: divide($size, $columns);
    margin-left: if($num == 0, 0, percentage($num));
  }
  
  // Row columns
  //
  // Specify on a parent element(e.g., .row) to force immediate children into NN
  // number of columns. Supports wrapping to new lines, but does not do a Masonry
  // style grid.
  @mixin row-cols($count) {
    > * {
      flex: 0 0 auto;
      width: percentage(divide(1, $count));
    }
  }
  
  // Framework grid generation
  //
  // Used only by Bootstrap to generate the correct number of grid classes given
  // any value of `$grid-columns`.
  
  @mixin make-grid-columns($columns: $grid-columns, $gutter: $grid-gutter-width, $breakpoints: $grid-breakpoints) {
    @each $breakpoint in map-keys($breakpoints) {
      $infix: breakpoint-infix($breakpoint, $breakpoints);
  
      @include media-breakpoint-up($breakpoint, $breakpoints) {
        // Provide basic `.col-{bp}` classes for equal-width flexbox columns
        .col#{$infix} {
          flex: 1 0 0%; // Flexbugs #4: https://github.com/philipwalton/flexbugs#flexbug-4
        }
  
        .row-cols#{$infix}-auto > * {
          @include make-col-auto();
        }
  
        @if $grid-row-columns > 0 {
          @for $i from 1 through $grid-row-columns {
            .row-cols#{$infix}-#{$i} {
              @include row-cols($i);
            }
          }
        }
  
        .col#{$infix}-auto {
          @include make-col-auto();
        }
  
        @if $columns > 0 {
          @for $i from 1 through $columns {
            .col#{$infix}-#{$i} {
              @include make-col($i, $columns);
            }
          }
  
          // `$columns - 1` because offsetting by the width of an entire row isn't possible
          @for $i from 0 through ($columns - 1) {
            @if not ($infix == "" and $i == 0) { // Avoid emitting useless .offset-0
              .offset#{$infix}-#{$i} {
                @include make-col-offset($i, $columns);
              }
            }
          }
        }
  
        // Gutters
        //
        // Make use of `.g-*`, `.gx-*` or `.gy-*` utilities to change spacing between the columns.
        @each $key, $value in $gutters {
          .g#{$infix}-#{$key},
          .gx#{$infix}-#{$key} {
            --#{$prefix}gutter-x: #{$value};
          }
  
          .g#{$infix}-#{$key},
          .gy#{$infix}-#{$key} {
            --#{$prefix}gutter-y: #{$value};
          }
        }
      }
    }
  }
  
  @mixin make-cssgrid($columns: $grid-columns, $breakpoints: $grid-breakpoints) {
    @each $breakpoint in map-keys($breakpoints) {
      $infix: breakpoint-infix($breakpoint, $breakpoints);
  
      @include media-breakpoint-up($breakpoint, $breakpoints) {
        @if $columns > 0 {
          @for $i from 1 through $columns {
            .g-col#{$infix}-#{$i} {
              grid-column: auto / span $i;
            }
          }
  
          // Start with `1` because `0` is an invalid value.
          // Ends with `$columns - 1` because offsetting by the width of an entire row isn't possible.
          @for $i from 1 through ($columns - 1) {
            .g-start#{$infix}-#{$i} {
              grid-column-start: $i;
            }
          }
        }
      }
    }
  }