// Augments a breakpoint map by building a "scale" property
// containing the specified sizes to each breakpoint.

@function ss-build-typography($opts: ()) {

	// Extend default opts
	$opts: map-merge((
		"scales": (
			"default": (
				"base-font-size": 16px,
				"base-line-height": 1.5,
				"max-font-size": 28px,
				"max-line-height": 1.35
			),
			"tablet": (
				"media-query": "screen and (min-width: 768px)",
				"base-font-size": 18px,
				"base-line-height": 1.6,
				"max-font-size": 42px,
				"max-line-height": 1.25
			)
		),
		"numb-smaller-sizes": 1,
		"numb-larger-sizes": 4
	), $opts);

	// The object we'll return.
	$typography: ();

	// Create a scale for each breakpoint.
	@each $font-scale-name, $font-scale-opts in map-get($opts, "scales") {

		// Merge global opts with scale-specific opts
		$font-scale-opts: map-merge($font-scale-opts, (
			"numb-smaller-sizes": map-get($opts, "numb-smaller-sizes"),
			"numb-larger-sizes": map-get($opts, "numb-larger-sizes")
		));

		// Create a font scale.
		$font-scale: ss-build-font-scale($font-scale-opts);
		$typography: map-merge($typography, ($font-scale-name: $font-scale));
	}

	@return $typography;
}