import { requireNativeModule } from 'expo-modules-core';

export interface DecodeEncodeTimings {
  decodeMs: number;
  encodeWriteMs: number;
  totalMs: number;
}

export interface ColorTimings {
  decodeMs: number;
  colorMs: number;
  encodeWriteMs: number;
  totalMs: number;
}

/** Rect (pixel coords) of the center-largest aspect crop, computed in JS. */
export interface CropRect {
  x: number;
  y: number;
  width: number;
  height: number;
}

export interface RecipescamExportModule {
  /** Decode JPEG/PNG at srcPath (plain absolute path), re-encode JPEG q and write dstPath. All native, background. Returns stage timings in ms. */
  decodeEncodeAsync(srcPath: string, dstPath: string, quality: number): Promise<DecodeEncodeTimings>;
  /**
   * Decode srcPath, optional crop rect, apply a row-major 4x5 color matrix
   * (translate column in 0..1 Skia space — folded from colorUtils.ts
   * getSkiaColorMatrix/applyExposureGain in JS), JPEG-encode to dstPath.
   * All native, off the JS/main threads.
   */
  processColorAsync(srcPath: string, dstPath: string, matrix: number[], crop: CropRect | null, quality: number): Promise<ColorTimings>;
  /** P0 probe helpers — removed before ship. */
  ping(): Promise<string>;
  materializeBenchAsset(assetName: string): Promise<string>;
  materializeBlackAsset(): Promise<string>;
}

export default requireNativeModule('RecipesCamExport') as RecipescamExportModule;