// Copyright (c) 2016-2018 VMware, Inc. All Rights Reserved.
// This software is released under MIT license.
// The full license information can be found in LICENSE in the root directory of this project.

// using cache for contrast lookup shaved 7 seconds off sass build. over 50% at this time.
// using interpolation for cacheContrast keys increased build time almost 250%.

// this cache is not exactly what the color code would pass; minor liberties were taken to apply design sense to
// the cached colors returned. what you will get is, at least, an acceptable color contrast with a color that
// returns as inoffensive. if you get funky with the colors you're trying to contrast with, you're at the mercy
// of the contrast checker. if you go around the contrast checker, well... why are you reading this?

// WCAG AA ratios represented by mapped values:
// low = 3.00 and up (applicable to very large text, bolded normal-size text, or a combination of the two)
// default = 4.5 and up (applicable to normal-sized text that is not bolded or large text that is thin)
// high = 7 and up (applicable to normal-sized text that is thin or small, normal weight text)
// superHigh = 13 and up (applicable to very small, normal weight text or small, thin text)

$clr-gray-contrastCache: (
    #fff: (
        lightest: ( low: $clr-dark-gray, default: $clr-dark-gray, high: $clr-dark-gray, superHigh: $clr-near-black),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: $clr-black),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-dark-gray, default: $clr-dark-gray, high: $clr-dark-gray, superHigh: $clr-near-black)
    ),
    #fafafa: (
        lightest: ( low: $clr-dark-gray, default: $clr-dark-gray, high: $clr-dark-gray, superHigh: $clr-near-black),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: $clr-black),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-dark-gray, default: $clr-dark-gray, high: $clr-dark-gray, superHigh: $clr-near-black)
    ),
    #eee: (
        lightest: ( low: $clr-dark-gray, default: $clr-dark-gray, high: $clr-dark-gray, superHigh: $clr-near-black),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: $clr-black),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-dark-gray, default: $clr-dark-gray, high: $clr-dark-gray, superHigh: $clr-near-black)
    ),
    #ddd: (
        lightest: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: $clr-black),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: $clr-black),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: $clr-black)
    ),
    #ccc: (
        lightest: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: $clr-black),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: $clr-black),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: $clr-black)
    ),
    #9a9a9a: (
        lightest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: null ),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: null ),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: null )
    ),
    #737373: (
        lightest: ( low: $clr-white, default: $clr-white, high: null, superHigh: null),
        darkest: ( low: $clr-light-gray, default: $clr-near-white, high: null, superHigh: null),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: null, superHigh: null),
        middle-dark: ( low: $clr-black, default: null, high: null, superHigh: null)
    ),
    #565656: (
        lightest: ( low: $clr-white, default: $clr-white, high: $clr-white, superHigh: null),
        darkest: ( low: $clr-light-midtone-gray, default: $clr-light-midtone-gray, high: $clr-near-white, superHigh: null),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: $clr-near-white, superHigh: null),
        middle-dark: ( low: null, default: null, high: null, superHigh: null)
    ),
    #313131: (
        lightest: ( low: $clr-white, default: $clr-white, high: $clr-white, superHigh: $clr-white),
        darkest: ( low: $clr-light-midtone-gray, default: $clr-light-midtone-gray, high: $clr-light-midtone-gray, superHigh: $clr-white),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: $clr-near-white, superHigh: $clr-white),
        middle-dark: ( low: $clr-dark-midtone-gray, default: $clr-dark-midtone-gray, high: null, superHigh: null)
    ),
    #000: (
        lightest: ( low: $clr-white, default: $clr-white, high: $clr-white, superHigh: $clr-white),
        darkest: ( low: $clr-light-midtone-gray, default: $clr-light-midtone-gray, high: $clr-light-midtone-gray, superHigh: $clr-light-gray),
        middle-light: ( low: $clr-near-white, default: $clr-light-gray, high: $clr-light-gray, superHigh: $clr-light-gray),
        middle-dark: ( low: $clr-dark-midtone-gray, default: $clr-dark-midtone-gray, high: $clr-dark-midtone-gray, superHigh: null)
    )
);

$clr-blue-contrastCache: (
    #e1f1f6: (
        lightest: ( low: $clr-dark-gray, default: $clr-dark-gray, high: $clr-near-black, superHigh: $clr-black ),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: $clr-black ),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: $clr-black )
    ),
    #c0dae4: (
        lightest: ( low: $clr-dark-gray, default: $clr-dark-gray, high: $clr-near-black, superHigh: $clr-black ),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: $clr-black ),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: $clr-black )
    ),
    #a9cdda: (
        lightest: ( low: $clr-dark-gray, default: $clr-near-black, high: $clr-near-black, superHigh: null ),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: null ),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: null )
    ),
    #66a6bd: (
        lightest: ( low: $clr-near-black, default: $clr-near-black, high: $clr-black, superHigh: null ),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: null ),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: null )
    ),
    #4392ae: (
        lightest: ( low: $clr-white, default: null, high: null, superHigh: null ),
        darkest: ( low: $clr-black, default: $clr-black, high: null, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: null, high: null, superHigh: null ),
        middle-dark: ( low: $clr-near-black, default: $clr-black, high: null, superHigh: null )
    ),
    #006a91: (
        lightest: ( low: $clr-white, default: $clr-white, high: null, superHigh: null),
        darkest: ( low: $clr-near-white, default: $clr-near-white, high: null, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: null, superHigh: null ),
        middle-dark: ( low: null, default: null, high: null, superHigh: null)
    ),
    #004057: (
        lightest: ( low: $clr-white, default: $clr-white, high: $clr-white, superHigh: null ),
        darkest: ( low: $clr-near-white, default: $clr-near-white, high: $clr-near-white, superHigh: null),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: $clr-near-white, superHigh: null),
        middle-dark: ( low: null, default: null, high: null, superHigh: null)
    )
);

$clr-action-blue-contrastCache: (
    #89cbdf: (
        lightest: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: null ),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: null ),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: null )
    ),
    #49afd9: (
        lightest: ( low: $clr-near-black, default: $clr-near-black, high: $clr-black, superHigh: null ),
        darkest:  ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: null ),
        middle-light: ( low: null, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-near-black, default: $clr-near-black, high: $clr-black, superHigh: null )
    ),
    #0094d2: (
        lightest: ( low: $clr-white, default: null, high: null, superHigh: null ),
        darkest: ( low: $clr-black, default: $clr-black, high: null, superHigh: null ),
        middle-light: ( low: $clr-white, default: null, high: null, superHigh: null),
        middle-dark: ( low: $clr-near-black, default: $clr-black, high: null, superHigh: null )
    ),
    #007cbb: (
        lightest: ( low: $clr-white, default: $clr-white, high: null, superHigh: null ),
        darkest: ( low: null, default: null, high: null, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-white, high: null, superHigh: null ),
        middle-dark: ( low: null, default: null, high: null, superHigh: null )
    ),
    #004a70: (
        lightest: ( low: $clr-white, default: $clr-white, high: $clr-white, superHigh: null ),
        darkest: ( low: $clr-light-midtone-gray, default: $clr-light-midtone-gray, high: $clr-near-white, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: $clr-near-white, superHigh: null ),
        middle-dark: ( low: $clr-dark-midtone-gray, default: null, high: null, superHigh: null )
    ),
    #003a59: (
        lightest: ( low: $clr-white, default: $clr-white, high: $clr-white, superHigh: null ),
        darkest: ( low: $clr-light-gray, default: $clr-light-gray, high: $clr-light-gray, superHigh: null ),
        middle-light: ( low: $clr-light-midtone-gray, default: $clr-light-midtone-gray, high: $clr-light-gray, superHigh: null ),
        middle-dark: ( low: null, default: null, high: null, superHigh: null )
    )
);

$clr-action-purple-contrastCache: (
    #9460b8: (
        lightest: ( low: $clr-white, default: $clr-white, high: null, superHigh: null ),
        darkest: ( low: $clr-near-white, default: $clr-white, high: null, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-white, high: null, superHigh: null ),
        middle-dark: ( low: $clr-black, default: $clr-black, high: null, superHigh: null )
    ),
    #853fb3: (
        lightest: ( low: $clr-white, default: $clr-white, high: null, superHigh: null ),
        darkest: ( low: $clr-near-white, default: $clr-near-white, high: null, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: null, superHigh: null ),
        middle-dark: ( low: null, default: null, high: null, superHigh: null )
    ),
    #660092: (
        lightest: ( low: $clr-white, default: $clr-white, high: $clr-white, superHigh: null ),
        darkest: ( low: $clr-light-midtone-gray, default: $clr-light-midtone-gray, high: $clr-light-gray, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: $clr-near-white, superHigh: null ),
        middle-dark: ( low: null, default: null, high: null, superHigh: null )
    ),
    #50266b: (
        lightest: ( low: $clr-white, default: $clr-white, high: $clr-white, superHigh: null ),
        darkest: ( low: $clr-light-midtone-gray, default: $clr-light-midtone-gray, high: $clr-light-gray, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: $clr-near-white, superHigh: null ),
        middle-dark: ( low: null, default: null, high: null, superHigh: null )
    )
);

$clr-red-contrastCache: (
    #e62700: (
        lightest: ( low: $clr-white, default: $clr-white, high: null, superHigh: null ),
        darkest: ( low: $clr-near-white, default: $clr-white, high: null, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-white, high: null, superHigh: null ),
        middle-dark: ( low: $clr-black, default: $clr-black, high: null, superHigh: null )
    ),
    #c92100: (
        lightest: ( low: $clr-white, default: $clr-white, high: null, superHigh: null ),
        darkest: ( low: $clr-near-white, default: $clr-near-white, high: null, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: null, superHigh: null ),
        middle-dark: ( low: null, default: null, high: null, superHigh: null )
    )
);

$clr-yellow-contrastCache: (
    #FFDC0B: (
        lightest: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: $clr-black ),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: $clr-black ),
        middle-light: ( low: null, default: null, high: null, superHigh: null ),
        middle-dark: ( low: $clr-near-black, default: $clr-near-black, high: $clr-near-black, superHigh: $clr-black )
    )
);

$clr-green-contrastCache: (
    #c6e4ab: (
        lightest: ( low: $clr-dark-gray, default: $clr-near-black, high: $clr-near-black, superHigh: $clr-black ),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: $clr-black ),
        middle-light: ( low: null, default: null, high: null, superHigh: null ),
        middle-dark: ( low: $clr-dark-gray, default: $clr-near-black, high: $clr-near-black, superHigh: $clr-black )
    ),
    #a0d373: (
        lightest: ( low: $clr-dark-gray, default: $clr-near-black, high: $clr-near-black, superHigh: null ),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: null ),
        middle-light: ( low: null, default: null, high: null, superHigh: null ),
        middle-dark: ( low: $clr-dark-gray, default: $clr-near-black, high: $clr-near-black, superHigh: null )
    ),
    #62a420: (
        lightest: ( low: $clr-white, default: null, high: null, superHigh: null ),
        darkest: ( low: $clr-black, default: $clr-black, high: null, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: null, high: null, superHigh: null ),
        middle-dark: ( low: $clr-near-black, default: $clr-black, high: null, superHigh: null )
    ),
    #60b515: (
        lightest: ( low: $clr-near-black, default: $clr-near-black, high: $clr-black, superHigh: null ),
        darkest: ( low: $clr-black, default: $clr-black, high: $clr-black, superHigh: null ),
        middle-light: ( low: null, default: null, high: null, superHigh: null ),
        middle-dark: ( low: $clr-dark-gray, default: $clr-near-black, high: $clr-black, superHigh: null )
    ),
    #318700: (
        lightest: ( low: $clr-white, default: $clr-white, high: null, superHigh: null ),
        darkest: ( low: $clr-near-white, default: $clr-white, high: null, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-white, high: null, superHigh: null ),
        middle-dark: ( low: null, default: null, high: null, superHigh: null )
    ),
    #266900: (
        lightest: ( low: $clr-white, default: $clr-white, high: null, superHigh: null ),
        darkest: ( low: $clr-near-white, default: $clr-near-white, high: null, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: null, superHigh: null ),
        middle-dark: ( low: null, default: null, high: null, superHigh: null )
    ),
    #1d5100: (
        lightest: ( low: $clr-white, default: $clr-white, high: $clr-white, superHigh: null ),
        darkest: ( low: $clr-near-white, default: $clr-near-white, high: $clr-near-white, superHigh: null ),
        middle-light: ( low: $clr-near-white, default: $clr-near-white, high: $clr-near-white, superHigh: null ),
        middle-dark: ( low: null, default: null, high: null, superHigh: null )
    )
);

// sadly, map-merge can only handle 2 arguments so we have this. which is slightly
// more readable than a bunch of hex-colors in one assignement.
$clr-contrastCache: $clr-gray-contrastCache;
$clr-contrastCache:  map-merge($clr-contrastCache, $clr-blue-contrastCache);
$clr-contrastCache:  map-merge($clr-contrastCache, $clr-action-blue-contrastCache);
$clr-contrastCache:  map-merge($clr-contrastCache, $clr-action-purple-contrastCache);
$clr-contrastCache:  map-merge($clr-contrastCache, $clr-red-contrastCache);
$clr-contrastCache:  map-merge($clr-contrastCache, $clr-yellow-contrastCache);
$clr-contrastCache:  map-merge($clr-contrastCache, $clr-green-contrastCache);