// Keeps count of all instances with arguments, stores in global var
// -------------------------------------------------------------------------------
// @dependence `flint-get-value()`
// -------------------------------------------------------------------------------
// @param $key [string] : computed breakpoint of instance
// @param $span [number] : computed span of instance
// @param $context [number] : computed context of instance
// @param $gutter [number] : computed gutter of instance
// @param $shift [number] : computed shift of instance
// @param $output-width [number] : computed width of instance
// @param $output-margin-right [number] : computed right margin of instance
// @param $output-margin-left [number] : computed left margin of instance
// -------------------------------------------------------------------------------
// @return instance map

@function flint-instance($key, $span, $context, $gutter, $shift, $output-width, $output-margin-right, $output-margin-left) {

    // Increase the instance count
    $flint__instance-count: $flint__instance-count + 1 !global;

    // Lets clean up the selector a bit...
    $selector-string: selector_string();
    $selector-list: flint-string-to-list($selector-string);
    $selector-cleaned: flint-list-to-string($selector-list, " ");

    $flint__instance: (
		"#{$selector-cleaned}::#{$key}": (
			"instance-count": #{$flint__instance-count},
			"parent-selector": #{if(flint-has-family-instance($key) != false, flint-has-family-instance($key), none)},
			"key": #{$key},
			"breakpoint": #{flint-get-value($key, "breakpoint")},
			"columns": #{flint-get-value($key, "columns")},
			"span": #{$span},
			"context": #{if($context == "auto", flint-get-instance-value($key, "span"), $context)},
			"gutter": #{$gutter},
			"shift": #{$shift},
			"output": (
				"width": #{$output-width},
				"margin-right": #{$output-margin-right},
				"margin-left": #{$output-margin-left}
			)
		)
    );

    @return map-merge($flint__instances, $flint__instance);
}