// RenderKit
// github.com/matteobertoldo/renderkit
// Licensed under MIT Open Source

////
/// @group fonts
////

/// Function for catch font family in `$font-face-map`.
/// @param {Integer} $font-family-key - The `nth` key of `$font-face-map`.
/// @return {String} - The name of the font family.
@function font($font-family-key) {
    $list: $font-face-map;
    $key: map-keys($list);
    $map-length: length($list);

    @if ($font-family-key > $map-length) {
        @warn 'No font-family found in `$font-face-map` map.';
    } @else {
        $value: nth($key, $font-family-key);

        @return $value;
    }
}

/// Mixin for generate a `@font-face` rule.
/// @param {String} $font-name - The font family name.
/// @param {String} $font-file - The name of font file.
/// @param {String} $style [normal] - The style of your font.
/// @param {String|Integer} $weight [400] - The font weight of your font.
/// @param {String} $extension [eot woff woff2 ttf svg] - The extensions available for the font.
@mixin font-face($font-name, $font-file, $style: normal, $weight: 400, $extensions: eot woff woff2 ttf svg) {
    $filepath: $font-dir + $font-file;
    $src: null;
    $extmods: (
        eot: "?#iefix",
        svg: "#" + str-replace($font-name, ' ', '_')
	);
    $formats: (
        otf: "opentype",
        ttf: "truetype"
	);

    @each $extension in $extensions {
        $extmod: if(map-has-key($extmods, $extension), $extension + map-get($extmods, $extension), $extension);
        $format: if(map-has-key($formats, $extension), map-get($formats, $extension), $extension);
        $src: append($src, url(quote($filepath + "." + $extmod)) format(quote($format)), comma);
	}

    @font-face {
        font: {
            family: quote(#{$font-name});
            style: $style;
            weight: $weight;
        }
        src: $src;
    }
}