// Note: Types ensure every field is specified.

/* eslint-disable-next-line @typescript-eslint/no-unused-vars */
function checkType<T>(_: T) {}

const BufferUsage = {
  MAP_READ: 0x0001,
  MAP_WRITE: 0x0002,
  COPY_SRC: 0x0004,
  COPY_DST: 0x0008,
  INDEX: 0x0010,
  VERTEX: 0x0020,
  UNIFORM: 0x0040,
  STORAGE: 0x0080,
  INDIRECT: 0x0100,
  QUERY_RESOLVE: 0x0200,
} as const;
checkType<typeof GPUBufferUsage>(BufferUsage);

declare global {
  // MAINTENANCE_TODO: Remove this once TRANSIENT_ATTACHMENT is added to @webgpu/types
  interface GPUTextureUsage {
    readonly TRANSIENT_ATTACHMENT: GPUFlagsConstant;
  }
}

const TextureUsage = {
  COPY_SRC: 0x01,
  COPY_DST: 0x02,
  TEXTURE_BINDING: 0x04,
  STORAGE_BINDING: 0x08,
  RENDER_ATTACHMENT: 0x10,
  TRANSIENT_ATTACHMENT: 0x20,
} as const;
checkType<typeof GPUTextureUsage>(TextureUsage);

const ColorWrite = {
  RED: 0x1,
  GREEN: 0x2,
  BLUE: 0x4,
  ALPHA: 0x8,
  ALL: 0xf,
} as const;
checkType<typeof GPUColorWrite>(ColorWrite);

const ShaderStage = {
  VERTEX: 0x1,
  FRAGMENT: 0x2,
  COMPUTE: 0x4,
} as const;
checkType<typeof GPUShaderStage>(ShaderStage);

const MapMode = {
  READ: 0x1,
  WRITE: 0x2,
} as const;
checkType<typeof GPUMapMode>(MapMode);

export const GPUConst = {
  BufferUsage,
  TextureUsage,
  ColorWrite,
  ShaderStage,
  MapMode,
} as const;

export const kMaxUnsignedLongValue = 4294967295;
export const kMaxUnsignedLongLongValue = Number.MAX_SAFE_INTEGER;

export const kInterpolationSampling = ['center', 'centroid', 'sample', 'first', 'either'] as const;
export const kInterpolationType = ['perspective', 'linear', 'flat'] as const;
export type InterpolationType = (typeof kInterpolationType)[number];
export type InterpolationSampling = (typeof kInterpolationSampling)[number];