import { Byte, Encoder, Hanzi, Kanji } from '@nuintun/qrcode';

const encoder = new Encoder({
  level: 'H'
});

const qrcode = encoder.encode(
  // Hanzi
  new Hanzi('你好世界'),
  // Byte
  new Byte('\nhello world\n'),
  // Kanji
  new Kanji('こんにちは世界')
);

console.log(qrcode.toDataURL());

declare type Level = 'L' | 'M' | 'Q' | 'H';

declare type RGB = [R: number, G: number, B: number];

declare type FNC1 = [mode: 'GS1'] | [mode: 'AIM', indicator: number];

declare class Charset {
  public static readonly CP437: Charset;
  public static readonly ISO_8859_1: Charset;
  public static readonly ISO_8859_2: Charset;
  public static readonly ISO_8859_3: Charset;
  public static readonly ISO_8859_4: Charset;
  public static readonly ISO_8859_5: Charset;
  public static readonly ISO_8859_6: Charset;
  public static readonly ISO_8859_7: Charset;
  public static readonly ISO_8859_8: Charset;
  public static readonly ISO_8859_9: Charset;
  public static readonly ISO_8859_10: Charset;
  public static readonly ISO_8859_11: Charset;
  public static readonly ISO_8859_13: Charset;
  public static readonly ISO_8859_14: Charset;
  public static readonly ISO_8859_15: Charset;
  public static readonly ISO_8859_16: Charset;
  public static readonly SJIS: Charset;
  public static readonly CP1250: Charset;
  public static readonly CP1251: Charset;
  public static readonly CP1252: Charset;
  public static readonly CP1256: Charset;
  public static readonly UTF_16BE: Charset;
  public static readonly UTF_8: Charset;
  public static readonly ASCII: Charset;
  public static readonly BIG5: Charset;
  public static readonly GB18030: Charset;
  public static readonly EUC_KR: Charset;
  public constructor(label: string, ...values: number[]);
}

declare class Matrix {
  public size: number;
  public get(x: number, y: number): number;
}

declare interface DataURLOptions {
  margin?: number;
  foreground?: RGB;
  background?: RGB;
}

declare class QRCode {
  public level: Level;
  public mask: number;
  public matrix: Matrix;
  public version: number;
  public toDataURL(moduleSize: number, options?: DataURLOptions): string;
}

declare class Alphanumeric {
  public constructor(content: string);
}

declare class Byte {
  public constructor(content: string, charset?: Charset);
}

declare class Hanzi {
  public constructor(content: string);
}

declare class Kanji {
  public constructor(content: string);
}

declare class Numeric {
  public constructor(content: string);
}

declare interface Options {
  level?: Level;
  hints?: { fnc1?: FNC1 };
  version?: 'Auto' | number;
  encode?: (content: string, charset: Charset) => Uint8Array;
}

declare class Encoder {
  public constructor(options?: Options);
  public encode(...segments: (Alphanumeric | Byte | Hanzi | Kanji | Numeric)[]): QRCode;
}

import { Decoder } from '@nuintun/qrcode';

const qrcode = new Decoder();

qrcode
  .scan('https://nuintun.github.io/qrcode/examples/qrcode.jpg')
  .then(result => {
    console.log(result.data);
  })
  .catch(error => {
    console.error(error);
  });