import { FILTERS } from "./lib/scan-processor";
import { ACCEPTED_LANGUAGES } from "./lib/i18n";
import { ACTIONS, SOURCES } from "./configuration";

type PostProcessingAction = (typeof ACTIONS)[number];

type MultiPageFormat = "pdf" | "none";

type PDFPageSize = "fit" | "a4" | "letter";

type Filter = (typeof FILTERS)[number];

type Language = (typeof ACCEPTED_LANGUAGES)[number];

type Source = (typeof SOURCES)[number];

interface Configuration {
  // Internal options
  showFps?: boolean;
  // Publicly documented options
  source?: Source;
  sourceImage?: Blob;
  multiPage?: boolean;
  multiPageFormat?: MultiPageFormat;
  defaultFilter?: Filter;
  availableFilters?: Filter[];
  jpegQuality?: number;
  postProcessingActions?: PostProcessingAction[];
  outputOriginalImage?: boolean;
  foregroundColor?: string;
  backgroundColor?: string;
  highlightColor?: string;
  language?: Language;

  // PDF generation options
  pdfTitle?: string;
  pdfPageSize?: PDFPageSize;
}

type Image = {
  data: Blob;
  type: "image/jpeg";
};

type Scan = {
  enhancedImage: Image;
  originalImage?: Image;
};

type ScanResult = {
  scans: Scan[];
  multiPageDocument?: {
    data: Blob;
    type: "application/pdf";
  };
};

export function setLicenseKey(licenseKey: string): Promise<void>;
export function scanDocument(configuration: Configuration): Promise<Image[]>;
export function scanWithConfiguration(configuration: Configuration): Promise<ScanResult>;
export function generatePDFFromImages(jpegs: Blob[], pdfPageSize?: PDFPageSize, title?: string): Promise<Blob>;