// Define color schemes quickly

// Color schemes to choose from
//    mono
//    complement
//    triad
//    tetrad
//    analogic
//    accented-analogic

$color-location: primary !default
$base-color: #f00 !default
$color-scheme: mono !default
$hue-offset: 20 !default
$brightness-offset: 10% !default

// Normalizer credit to Mason Wendell: https://github.com/canarymason/The-Coding-Designers-Survival-Kit/blob/master/sass/partials/lib/variables/_color_schemes.sass
@function equalize($color)
  @return hsl(hue($color), 100%, 50%)

@function color-schemer($color-location, $base-color, $color-scheme, $hue-offset)
  // Primary, just return the base-color.
  @if $color-location == primary
    @return $base-color
  // Secondary colors
  @if $color-location == secondary
    @if $color-scheme == mono
      @return lighten($base-color, $brightness-offset)
    @if $color-scheme == complement
      @return invert($base-color)
    @if $color-scheme == triad
      @return adjust-hue(complement($base-color), $hue-offset)
    @if $color-scheme == tetrad
      @return complement($base-color)
    @if $color-scheme == analogic
      @return adjust-hue($base-color, $hue-offset)
    @if $color-scheme == accented-analogic
      @return adjust-hue($base-color, $hue-offset)
    @warn "Oops! You didn’t properly define $color-scheme (complement, triad...)"
  // Tertiary colors
  @if $color-location == tertiary
    @if $color-scheme == mono
      @return lighten($base-color, $brightness-offset * 2)
    @if $color-scheme == complement
      @return lighten($base-color, $brightness-offset)
    @if $color-scheme == triad
      @return adjust-hue(complement($base-color), -$hue-offset)
    @if $color-scheme == tetrad
      @return adjust-hue($base-color, $hue-offset)
    @if $color-scheme == analogic
      @return adjust-hue($base-color, -$hue-offset)
    @if $color-scheme == accented-analogic
      @return adjust-hue($base-color, -$hue-offset)
    @warn "Oops! You didn’t properly define $color-scheme (complement, triad...)"
  // Quadrary colors
  @if $color-location == quadrary
    @if $color-scheme == mono
      @return darken($base-color, $brightness-offset)
    @if $color-scheme == complement
      @return darken($base-color, $brightness-offset)
    @if $color-scheme == triad
      @return darken($base-color, $brightness-offset)
    @if $color-scheme == tetrad
      @return adjust-hue(complement($base-color), $hue-offset)
    @if $color-scheme == analogic
      @return darken($base-color, $brightness-offset)
    @if $color-scheme == accented-analogic
      @return complement($base-color)
    @warn "Oops! You didn’t properly define $color-scheme (complement, triad...)"
  @warn "Oops! You didn’t properly define $color-location (primary, secondary...)"

// Write your basic color scheme
$primary: color-schemer(primary) !default
$secondary: color-schemer(secondary) !default
$tertiary: color-schemer(tertiary) !default
$quadrary: color-schemer(quadrary) !default

// Tell other files that this is loaded.
$color-schemer-loaded: true