// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import Foundation

/// A Dynamic Color theme that maxes out colorfulness at each position in the
/// Primary [TonalPalette].
public class SchemeVibrant: DynamicScheme {
  /// Hues used at breakpoints such that designers can specify a hue rotation
  /// that occurs at a given break point.
  static let hues: [Double] = [0, 41, 61, 101, 131, 181, 251, 301, 360]

  /// Hue rotations of the Secondary [TonalPalette], corresponding to the
  /// breakpoints in [hues].
  static let secondaryRotations: [Double] = [
    18,
    15,
    10,
    12,
    15,
    18,
    15,
    12,
    12,
  ]

  /// Hue rotations of the Tertiary [TonalPalette], corresponding to the
  /// breakpoints in [hues].
  static let tertiaryRotations: [Double] = [35, 30, 20, 25, 30, 35, 30, 25, 25]

  public init(sourceColorHct: Hct, isDark: Bool, contrastLevel: Double) {
    super.init(
      sourceColorArgb: sourceColorHct.toInt(),
      variant: Variant.vibrant,
      isDark: isDark,
      contrastLevel: contrastLevel,
      primaryPalette: TonalPalette.of(sourceColorHct.hue, 200.0),
      secondaryPalette: TonalPalette.of(
        DynamicScheme.getRotatedHue(
          sourceColorHct, SchemeVibrant.hues, SchemeVibrant.secondaryRotations),
        24.0
      ),
      tertiaryPalette: TonalPalette.of(
        DynamicScheme.getRotatedHue(
          sourceColorHct, SchemeVibrant.hues, SchemeVibrant.tertiaryRotations),
        32.0
      ),
      neutralPalette: TonalPalette.of(sourceColorHct.hue, 10.0),
      neutralVariantPalette: TonalPalette.of(sourceColorHct.hue, 12.0)
    )
  }
}
