// Calculate widths, save all variables to instance
// -------------------------------------------------------------------------------
// @param $calcKey [Values...] : breakpoint key
// @param $calcSpan [Values...] : span
// @param $calcContext [Values...] : context
// @param $calcGutter [Values...] : gutter
// @param $calcShift [Values...] : shift 
// @param $i [Index] : index if variable length is > 1
// -------------------------------------------------------------------------------
// @output [Styles...]

// Calculates width and margins based on passed arguments
@mixin calcFlint ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $i: NULL) {

	@if $i != NULL {

		@if length($calcKey) > 1 {
			$calcKey: nth($calcKey, $i);
		}
		@if length($calcSpan) > 1 {
			$calcSpan: nth($calcSpan, $i);
		}
		@if length($calcContext) > 1 {
			$calcContext: nth($calcContext, $i);
		}
		@if length($calcGutter) > 1 {
			$calcGutter: nth($calcGutter, $i);
		}
		@if length($calcShift) > 1 {
			$calcShift: nth($calcShift, $i);
		}

	}

	@if $calcShift != NULL and $calcContext == NULL {

		@if $calcGutter == NULL and get-value(settings, gutter) != false {

			// Save to variables for instance creation
			$outputWidth: (calc-width($calcKey, $calcSpan)) - ((calc-margin($calcKey, $calcSpan))*2);
			$outputMarginRight: calc-margin($calcKey, $calcSpan);
			$outputMarginLeft: ( if( $calcShift > 0, 
				(calc-margin($calcKey, $calcSpan)) + (calc-width($calcKey, $calcShift)),
				(calc-margin($calcKey, -$calcSpan)) + (calc-width($calcKey, $calcShift)) 
			));

			// Output styles
			width: $outputWidth;
			margin-right: $outputMarginRight;
			margin-left: $outputMarginLeft;
			@content;

			// Create new instance for memoization
			@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);

			// If debug mode, print instance
			@include debugPrintInstance($calcKey);

		} @else if $calcGutter == "alpha" and get-value(settings, gutter) != false {

			$outputWidth: (calc-width($calcKey, $calcSpan)) - (calc-margin($calcKey, $calcSpan));
			$outputMarginRight: calc-margin($calcKey, $calcSpan);
			$outputMarginLeft: ( if( $calcShift > 0, 
				calc-width($calcKey, $calcShift),
				calc-width($calcKey, $calcShift)
			));

			width: $outputWidth;
			margin-right: $outputMarginRight;
			margin-left: $outputMarginLeft;
			@content;

			@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
			@include debugPrintInstance($calcKey);

		} @else if $calcGutter == "omega" and get-value(settings, gutter) != false {

			$outputWidth: (calc-width($calcKey, $calcSpan)) - ((calc-margin($calcKey, $calcSpan)));
			$outputMarginRight: 0;
			$outputMarginLeft: ( if( $calcShift > 0, 
				(calc-margin($calcKey, $calcSpan)) + (calc-width($calcKey, $calcShift)),
				(calc-margin($calcKey, -$calcSpan)) + (calc-width($calcKey, $calcShift)) 
			));

			width: $outputWidth;
			margin-right: $outputMarginRight;
			margin-left: $outputMarginLeft;
			@content;

			@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
			@include debugPrintInstance($calcKey);

		} @else if $calcGutter == "row" or get-value(settings, gutter) == false {

			$outputWidth: (calc-width($calcKey, $calcSpan));
			$outputMarginRight: 0;
			$outputMarginLeft: ( if( $calcShift > 0, 
				calc-width($calcKey, $calcShift),
				calc-width($calcKey, $calcShift)
			));

			width: $outputWidth;
			margin-right: $outputMarginRight;
			margin-left: $outputMarginLeft;
			@content;

			@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
			@include debugPrintInstance($calcKey);
		}

	} @else if $calcContext != NULL {
		// Check if context of parent instance exists
		$exists: family-instance-exists($calcKey);

		@if $calcShift != NULL {
			@if $calcGutter == NULL and get-value(settings, gutter) != false {
				// Check if context is set to auto
				@if $calcContext == "auto" {
					// Did it exist?
					@if $exists != false {

						$outputWidth: (calc-width($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)))) - ((calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span))))*2);
						$outputMarginRight: calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)));
						$outputMarginLeft: ( if( $calcShift > 0, 
							(calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)))) + (calc-width($calcKey, $calcShift, to-number(get-instance-value($calcKey, span)))),
							(calc-margin($calcKey, -$calcSpan, to-number(get-instance-value($calcKey, span)))) + (calc-width($calcKey, $calcShift, to-number(get-instance-value($calcKey, span)))) 
						));

						width: $outputWidth;
						margin-right: $outputMarginRight;
						margin-left: $outputMarginLeft;
						@content;

						@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
						@include debugPrintInstance($calcKey);
						
					} @else {
						// Else warn that context should not be set to `auto`
						@warn "You set context to `#{$calcContext}`, but a parent instance could not be found for `#{selector_string()}`";
					}
					// Output styles normally if not set to auto
				} @else {

					$outputWidth: (calc-width($calcKey, $calcSpan, $calcContext)) - ((calc-margin($calcKey, $calcSpan, $calcContext))*2);
					$outputMarginRight: calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)));
					$outputMarginLeft: ( if( $calcShift > 0, 
						(calc-margin($calcKey, $calcSpan, $calcContext)) + (calc-width($calcKey, $calcShift, $calcContext)),
						(calc-margin($calcKey, -$calcSpan, $calcContext)) + (calc-width($calcKey, $calcShift, $calcContext)) 
					));

					width: $outputWidth;
					margin-right: $outputMarginRight;
					margin-left: $outputMarginLeft;
					@content;

					@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
					@include debugPrintInstance($calcKey);
				}

			} @else if $calcGutter == "alpha" and get-value(settings, gutter) != false {

				@if $calcContext == "auto" {
					@if $exists != false {

						$outputWidth: (calc-width($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)))) - (calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span))));
						$outputMarginRight: calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)));
						$outputMarginLeft: ( if( $calcShift > 0, 
							calc-width($calcKey, $calcShift, to-number(get-instance-value($calcKey, span))),
							calc-width($calcKey, $calcShift, to-number(get-instance-value($calcKey, span)))
						));

						width: $outputWidth;
						margin-right: $outputMarginRight;
						margin-left: $outputMarginLeft;
						@content;

						@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
						@include debugPrintInstance($calcKey);

					} @else {
						@warn "You set context to `#{$calcContext}`, but a parent instance could not be found for `#{selector_string()}`";
					}
				} @else {

					$outputWidth: (calc-width($calcKey, $calcSpan, $calcContext)) - (calc-margin($calcKey, $calcSpan, $calcContext));
					$outputMarginRight: calc-margin($calcKey, $calcSpan, $calcContext);
					$outputMarginLeft: ( if( $calcShift > 0, 
						calc-width($calcKey, $calcShift, $calcContext),
						calc-width($calcKey, $calcShift, $calcContext)
					));

					width: $outputWidth;
					margin-right: $outputMarginRight;
					margin-left: $outputMarginLeft;
					@content;

					@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
					@include debugPrintInstance($calcKey);
				}

			} @else if $calcGutter == "omega" and get-value(settings, gutter) != false {

				@if $calcContext == "auto" {
					@if $exists != false {

						$outputWidth: (calc-width($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)))) - ((calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)))));
						$outputMarginRight: 0;
						$outputMarginLeft: ( if( $calcShift > 0, 
							(calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)))) + (calc-width($calcKey, $calcShift, to-number(get-instance-value($calcKey, span)))),
							(calc-margin($calcKey, -$calcSpan, to-number(get-instance-value($calcKey, span)))) + (calc-width($calcKey, $calcShift, to-number(get-instance-value($calcKey, span)))) 
						));

						width: $outputWidth;
						margin-right: $outputMarginRight;
						margin-left: $outputMarginLeft;
						@content;

						@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
						@include debugPrintInstance($calcKey);

					} @else {
						@warn "You set context to `#{$calcContext}`, but a parent instance could not be found for `#{selector_string()}`";
					}
				} @else {

					$outputWidth: (calc-width($calcKey, $calcSpan, $calcContext)) - ((calc-margin($calcKey, $calcSpan, $calcContext)));
					$outputMarginRight: 0;
					$outputMarginLeft: ( if( $calcShift > 0, 
						(calc-margin($calcKey, $calcSpan, $calcContext)) + (calc-width($calcKey, $calcShift, $calcContext)),
						(calc-margin($calcKey, -$calcSpan, $calcContext)) + (calc-width($calcKey, $calcShift, $calcContext)) 
					));

					width: $outputWidth;
					margin-right: $outputMarginRight;
					margin-left: $outputMarginLeft;
					@content;

					@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
					@include debugPrintInstance($calcKey);
				}

			} @else if $calcGutter == "row" or get-value(settings, gutter) == false {

				@if $calcContext == "auto" {
					@if $exists != false {

						$outputWidth: (calc-width($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span))));
						$outputMarginRight: 0;
						$outputMarginLeft: ( if( $calcShift > 0, 
							calc-width($calcKey, $calcShift, to-number(get-instance-value($calcKey, span))),
							calc-width($calcKey, $calcShift, to-number(get-instance-value($calcKey, span)))
						));

						width: $outputWidth;
						margin-right: $outputMarginRight;
						margin-left: $outputMarginLeft;
						@content;

						@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
						@include debugPrintInstance($calcKey);

					} @else {
						@warn "You set context to `#{$calcContext}`, but a parent instance could not be found for `#{selector_string()}`";
					}
				} @else {

					$outputWidth: (calc-width($calcKey, $calcSpan, $calcContext));
					$outputMarginRight: 0;
					$outputMarginLeft: ( if( $calcShift > 0, 
						calc-width($calcKey, $calcShift, $calcContext),
						calc-width($calcKey, $calcShift, $calcContext)
					));

					width: $outputWidth;
					margin-right: $outputMarginRight;
					margin-left: $outputMarginLeft;
					@content;

					@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
					@include debugPrintInstance($calcKey);
				}
			}
		} @else {
			@if $calcGutter == NULL and get-value(settings, gutter) != false {
				// Check if context is set to auto
				@if $calcContext == "auto" {
					// Did it exist?
					@if $exists != false {

						$outputWidth: (calc-width($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)))) - ((calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span))))*2);
						$outputMarginRight: calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)));
						$outputMarginLeft: calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)));

						width: $outputWidth;
						margin-right: $outputMarginRight;
						margin-left: $outputMarginLeft;
						@content;

						@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
						@include debugPrintInstance($calcKey);

					} @else {
						// Else warn that context should not be set to `auto`
						@warn "You set context to `#{$calcContext}`, but a parent instance could not be found for `#{selector_string()}`";
					}
					// Output styles normally if not set to auto
				} @else {

					$outputWidth: (calc-width($calcKey, $calcSpan, $calcContext)) - ((calc-margin($calcKey, $calcSpan, $calcContext))*2);
					$outputMarginRight: calc-margin($calcKey, $calcSpan, $calcContext);
					$outputMarginLeft: calc-margin($calcKey, $calcSpan, $calcContext);

					width: $outputWidth;
					margin-right: $outputMarginRight;
					margin-left: $outputMarginLeft;
					@content;

					@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
					@include debugPrintInstance($calcKey);
				}

			} @else if $calcGutter == "alpha" and get-value(settings, gutter) != false {

				@if $calcContext == "auto" {
					@if $exists != false {

						$outputWidth: (calc-width($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)))) - (calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span))));
						$outputMarginRight: calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)));
						$outputMarginLeft: 0;

						width: $outputWidth;
						margin-right: $outputMarginRight;
						margin-left: $outputMarginLeft;
						@content;

						@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
						@include debugPrintInstance($calcKey);

					} @else {
						@warn "You set context to `#{$calcContext}`, but a parent instance could not be found for `#{selector_string()}`";
					}
				} @else {

					$outputWidth: (calc-width($calcKey, $calcSpan, $calcContext)) - (calc-margin($calcKey, $calcSpan, $calcContext));
					$outputMarginRight: calc-margin($calcKey, $calcSpan, $calcContext);
					$outputMarginLeft: 0;

					width: $outputWidth;
					margin-right: $outputMarginRight;
					margin-left: $outputMarginLeft;
					@content;

					@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
					@include debugPrintInstance($calcKey);
				}

			} @else if $calcGutter == "omega" and get-value(settings, gutter) != false {

				@if $calcContext == "auto" {
					@if $exists != false {

						$outputWidth: (calc-width($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)))) - (calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span))));
						$outputMarginRight: 0;
						$outputMarginLeft: calc-margin($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)));

						width: $outputWidth;
						margin-right: $outputMarginRight;
						margin-left: $outputMarginLeft;
						@content;

						@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
						@include debugPrintInstance($calcKey);

					} @else {
						@warn "You set context to `#{$calcContext}`, but a parent instance could not be found for `#{selector_string()}`";
					}
				} @else {

					$outputWidth: (calc-width($calcKey, $calcSpan, $calcContext)) - (calc-margin($calcKey, $calcSpan, $calcContext));
					$outputMarginRight: 0;
					$outputMarginLeft: calc-margin($calcKey, $calcSpan, $calcContext);

					width: $outputWidth;
					margin-right: $outputMarginRight;
					margin-left: $outputMarginLeft;
					@content;

					@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
					@include debugPrintInstance($calcKey);
				}

			} @else if $calcGutter == "row" or get-value(settings, gutter) == false {

				@if $calcContext == "auto" {
					@if $exists != false {

						$outputWidth: calc-width($calcKey, $calcSpan, to-number(get-instance-value($calcKey, span)));
						$outputMarginRight: 0;
						$outputMarginLeft: 0;

						width: $outputWidth;
						margin-right: $outputMarginRight;
						margin-left: $outputMarginLeft;
						@content;

						@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
						@include debugPrintInstance($calcKey);

					} @else {
						@warn "You set context to `#{$calcContext}`, but a parent instance could not be found for `#{selector_string()}`";
					}
				} @else {

					$outputWidth: calc-width($calcKey, $calcSpan, $calcContext);
					$outputMarginRight: 0;
					$outputMarginLeft: 0;

					width: $outputWidth;
					margin-right: $outputMarginRight;
					margin-left: $outputMarginLeft;
					@content;

					@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
					@include debugPrintInstance($calcKey);
				}
			}
		}

	} @else {

		@if $calcGutter == NULL and get-value(settings, gutter) != false {

			$outputWidth: (calc-width($calcKey, $calcSpan)) - ((calc-margin($calcKey, $calcSpan))*2);
			$outputMarginRight: calc-margin($calcKey, $calcSpan);
			$outputMarginLeft: calc-margin($calcKey, $calcSpan);

			width: $outputWidth;
			margin-right: $outputMarginRight;
			margin-left: $outputMarginLeft;
			@content;

			@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
			@include debugPrintInstance($calcKey);

		} @else if $calcGutter == "alpha" and get-value(settings, gutter) != false {

			$outputWidth: (calc-width($calcKey, $calcSpan)) - (calc-margin($calcKey, $calcSpan));
			$outputMarginRight: calc-margin($calcKey, $calcSpan);
			$outputMarginLeft: 0;

			width: $outputWidth;
			margin-right: $outputMarginRight;
			margin-left: $outputMarginLeft;
			@content;

			@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
			@include debugPrintInstance($calcKey);

		} @else if $calcGutter == "omega" and get-value(settings, gutter) != false {

			$outputWidth: (calc-width($calcKey, $calcSpan)) - (calc-margin($calcKey, $calcSpan));
			$outputMarginRight: 0;
			$outputMarginLeft: calc-margin($calcKey, $calcSpan);

			width: $outputWidth;
			margin-right: $outputMarginRight;
			margin-left: $outputMarginLeft;
			@content;

			@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
			@include debugPrintInstance($calcKey);

		} @else if $calcGutter == "row" or get-value(settings, gutter) == false {

			$outputWidth: calc-width($calcKey, $calcSpan);
			$outputMarginRight: 0;
			$outputMarginLeft: 0;

			width: $outputWidth;
			margin-right: $outputMarginRight;
			margin-left: $outputMarginLeft;
			@content;

			@include newInstance ($calcKey, $calcSpan, $calcContext, $calcGutter, $calcShift, $outputWidth, $outputMarginRight, $outputMarginLeft);
			@include debugPrintInstance($calcKey);

		}
	}
}