export interface I_PDFKitDocument extends NodeJS.ReadableStream,
  PDFAnnotation,
  PDFColor,
  PDFImage,
  PDFText,
  PDFVector,
  PDFFont,
  PDFAcroForm {
  /**
   * PDF Version
   */
  version: number;
  /**
   * Wheter streams should be compressed
   */
  compress: boolean;
  /**
   * PDF document Metadata
   */
  info: DocumentInfo;
  /**
   * Options for the document
   */
  options: PDFDocumentOptions;
  /**
   * Represent the current page.
   */
  page: PDFPage;

  x: number;
  y: number;

  addPage(options?: PDFDocumentOptions): I_PDFKitDocument;
  bufferedPageRange(): { start: number; count: number };
  switchToPage(n?: number): PDFPage;
  flushPages(): void;
  ref(data: {}): PDFKitReference;
  addContent(data: any): I_PDFKitDocument;
  /**
   * Deprecated
   */
  write(fileName: string, fn: any): void;
  /**
   * Deprecated. Throws exception
   */
  output(fn: any): void;
  end(): void;
  toString(): string;
}

interface DocumentInfo {
  Producer?: string;
  Creator?: string;
  CreationDate?: Date;
  Title?: string;
  Author?: string;
  Keywords?: string;
  ModDate?: Date;
}

interface PDFDocumentOptions {
  compress?: boolean;
  info?: DocumentInfo;
  userPassword?: string;
  ownerPassword?: string;
  permissions?: DocumentPermissions;
  pdfVersion?: "1.3" | "1.4" | "1.5" | "1.6" | "1.7" | "1.7ext3";
  autoFirstPage?: boolean;
  size?: number[] | string;
  margin?: number;
  margins?: { top: number; left: number; bottom: number; right: number };
  layout?: "portrait" | "landscape";

  bufferPages?: boolean;
}

interface DocumentPermissions {
  modifying?: boolean;
  copying?: boolean;
  annotating?: boolean;
  fillingForms?: boolean;
  contentAccessibility?: boolean;
  documentAssembly?: boolean;
  printing?: "lowResolution" | "highResolution";
}

interface PDFPage {
  size: string;
  layout: string;
  margins: { top: number; left: number; bottom: number; right: number };
  width: number;
  height: number;
  document: I_PDFKitDocument;
  content: PDFKitReference;

  /**
     * The page dictionnary
     */
  dictionary: PDFKitReference;

  fonts: any;
  xobjects: any;
  ext_gstates: any;
  patterns: any;
  annotations: any;

  maxY(): number;
  write(chunk: any): void;
  end(): void;
}

interface PDFKitReference {
  id: number;
  gen: number;
  deflate: any;
  compress: boolean;
  uncompressedLength: number;
  chunks: any[];
  data: { Font?: any; XObject?: any; ExtGState?: any; Pattern: any; Annots: any };
  document: I_PDFKitDocument;

  initDeflate(): void;
  write(chunk: any): void;
  end(chunk: any): void;
  finalize(): void;
  toString(): string;
}

interface PDFAnnotation {
  annotate(x: number, y: number, w: number, h: number, option: AnnotationOption): this;
  note(x: number, y: number, w: number, h: number, content: string, option?: AnnotationOption): this;
  goTo(x: number, y: number, w: number, h: number, name: string, options?: AnnotationOption): this;
  link(x: number, y: number, w: number, h: number, url: string, option?: AnnotationOption): this;
  highlight(x: number, y: number, w: number, h: number, option?: AnnotationOption): this;
  underline(x: number, y: number, w: number, h: number, option?: AnnotationOption): this;
  strike(x: number, y: number, w: number, h: number, option?: AnnotationOption): this;
  lineAnnotation(x1: number, y1: number, x2: number, y2: number, option?: AnnotationOption): this;
  rectAnnotation(x: number, y: number, w: number, h: number, option?: AnnotationOption): this;
  ellipseAnnotation(x: number, y: number, w: number, h: number, option?: AnnotationOption): this;
  textAnnotation(x: number, y: number, w: number, h: number, text: string, option?: AnnotationOption): this;
}

interface AnnotationOption {
  Type?: string;
  Rect?: any;
  Border?: Array<number>;
  SubType?: string;
  Contents?: string;
  Name?: string;
  color?: string;
  QuadPoints?: Array<number>;

  A?: any;
  B?: any;
  C?: any;
  L?: any;
  DA?: string;
}
interface PDFColor {
  fillColor(color: ColorValue, opacity?: number): this;
  strokeColor(color: ColorValue, opacity?: number): this;
  opacity(opacity: number): this;
  fillOpacity(opacity: number): this;
  strokeOpacity(opacity: number): this;
  linearGradient(x1: number, y1: number, x2: number, y2: number): PDFLinearGradient;
  radialGradient(x1: number, y1: number, r1: number, x2: number, y2: number, r2: number): PDFRadialGradient;
}

type ColorValue = string | PDFGradient | [number, number, number] | [number, number, number, number];

interface PDFGradient {
  stop(pos: number, color?: string | PDFGradient, opacity?: number): PDFGradient;
  embed(): void;
  apply(): void;
}

interface PDFLinearGradient extends PDFGradient {
  shader(fn: () => any): any;
  opacityGradient(): PDFLinearGradient;
}

interface PDFRadialGradient extends PDFGradient {
  shader(fn: () => any): any;
  opacityGradient(): PDFRadialGradient;
}

interface PDFImage {
  /**
         * Draw an image in PDFKit document.
         */
  image(src: any, x?: number, y?: number, options?: ImageOption): this;
  image(src: any, options?: ImageOption): this;
}

interface ImageOption {
  width?: number;
  height?: number;
  /** Scale percentage */
  scale?: number;
  /** Two elements array specifying dimensions(w,h)  */
  fit?: [number, number];
  cover?: [number, number];
  align?: "center" | "right";
  valign?: "center" | "bottom";
  link?: AnnotationOption;
  goTo?: AnnotationOption;
  destination?: string;
}
interface TextOptions {
  /**  Set to false to disable line wrapping all together */
  lineBreak?: boolean;
  /** The width that text should be wrapped to (by default, the page width minus the left and right margin) */
  width?: number;
  /**  The maximum height that text should be clipped to */
  height?: number;
  /** The character to display at the end of the text when it is too long. Set to true to use the default character. */
  ellipsis?: boolean | string;
  /**  the number of columns to flow the text into */
  columns?: number;
  /** the amount of space between each column (1/4 inch by default) */
  columnGap?: number;
  /** The amount in PDF points (72 per inch) to indent each paragraph of text */
  indent?: number;
  /** the amount of space between each paragraph of text */
  paragraphGap?: number;
  /** the amount of space between each line of text */
  lineGap?: number;
  /** the amount of space between each word in the text */
  wordSpacing?: number;
  /** the amount of space between each character in the text */
  characterSpacing?: number;
  /** whether to fill the text (true by default) */
  fill?: boolean;
  /**  whether to stroke the text */
  stroke?: boolean;
  /** A URL to link this text to (shortcut to create an annotation) */
  link?: string;
  /** whether to underline the text */
  underline?: boolean;
  /** whether to strike out the text */
  strike?: boolean;
  /** whether the text segment will be followed immediately by another segment. Useful for changing styling in the middle of a paragraph. */
  continued?: boolean;
  /** whether to slant the text (angle in degrees or true) */
  oblique?: boolean | number;
  /** the alignment of the text (center, justify, left, right) */
  // TODO check this
  align?: "center" | "justify" | "left" | "right" | string;
  /** the vertical alignment of the text with respect to its insertion point */
  baseline?: number | "svg-middle" | "middle" | "svg-central" | "bottom" | "ideographic" | "alphabetic" | "mathematical" | "hanging" | "top";
  /** an array of OpenType feature tags to apply. If not provided, a set of defaults is used. */
  features?: OpenTypeFeatures[];
}
// Text option opentype features as listed at https://docs.microsoft.com/en-us/typography/opentype/spec/featurelist
    type OpenTypeFeatures =
        | "aalt" | "abvf" | "abvm" | "abvs" | "afrc" | "akhn" | "blwf" | "blwm" | "blws" | "calt" | "case"
        | "cfar" | "cjct" | "clig" | "cpct" | "cpsp" | "cswh" | "curs" | "cv01" | "cv02" | "cv03" | "cv04"
        | "cv05" | "cv06" | "cv07" | "cv08" | "cv09" | "cv10" | "cv11" | "cv12" | "cv13" | "cv14" | "cv15"
        | "cv16" | "cv17" | "cv18" | "cv19" | "cv20" | "cv21" | "cv22" | "cv23" | "cv24" | "cv25" | "cv26"
        | "cv27" | "cv28" | "cv29" | "cv30" | "cv31" | "cv32" | "cv33" | "cv34" | "cv35" | "cv36" | "cv37"
        | "cv38" | "cv39" | "cv40" | "cv41" | "cv42" | "cv43" | "cv44" | "cv45" | "cv46" | "cv47" | "cv48"
        | "cv49" | "cv50" | "cv51" | "cv52" | "cv53" | "cv54" | "cv55" | "cv56" | "cv57" | "cv58" | "cv59"
        | "cv60" | "cv61" | "cv62" | "cv63" | "cv64" | "cv65" | "cv66" | "cv67" | "cv68" | "cv69" | "cv70"
        | "cv71" | "cv72" | "cv73" | "cv74" | "cv75" | "cv76" | "cv77" | "cv78" | "cv79" | "cv80" | "cv81"
        | "cv82" | "cv83" | "cv84" | "cv85" | "cv86" | "cv87" | "cv88" | "cv89" | "cv90" | "cv91" | "cv92"
        | "cv93" | "cv94" | "cv95" | "cv96" | "cv97" | "cv98" | "cv99" | "c2pc" | "c2sc" | "dist" | "ccmp"
        | "dlig" | "dnom" | "dtls" | "expt" | "falt" | "fin2" | "fin3" | "fina" | "flac" | "frac" | "fwid"
        | "half" | "haln" | "halt" | "hist" | "hkna" | "hlig" | "hngl" | "hojo" | "hwid" | "init" | "isol"
        | "ital" | "jalt" | "jp78" | "jp83" | "jp90" | "jp04" | "kern" | "lfbd" | "liga" | "ljmo" | "lnum"
        | "locl" | "ltra" | "ltrm" | "mark" | "med2" | "medi" | "mgrk" | "mkmk" | "mset" | "nalt" | "nlck"
        | "nukt" | "numr" | "onum" | "opbd" | "ordn" | "ornm" | "palt" | "pcap" | "pkna" | "pnum" | "pref"
        | "pres" | "pstf" | "psts" | "pwid" | "qwid" | "rand" | "rclt" | "rkrf" | "rlig" | "rphf" | "rtbd"
        | "rtla" | "rtlm" | "ruby" | "rvrn" | "salt" | "sinf" | "size" | "smcp" | "smpl" | "ss01" | "ss02"
        | "ss03" | "ss04" | "ss05" | "ss06" | "ss07" | "ss08" | "ss09" | "ss10" | "ss11" | "ss12" | "ss13"
        | "ss14" | "ss15" | "ss16" | "ss17" | "ss18" | "ss19" | "ss20" | "ssty" | "stch" | "subs" | "sups"
        | "swsh" | "titl" | "tjmo" | "tnam" | "tnum" | "trad" | "twid" | "unic" | "valt" | "vatu" | "vert"
        | "vhal" | "vjmo" | "vkna" | "vkrn" | "vpal" | "vrt2" | "vrtr" | "zero";

interface PDFText {
  lineGap(lineGap: number): this;
  moveDown(line?: number): this;
  moveUp(line?: number): this;
  text(text: string, x?: number, y?: number, options?: TextOptions): this;
  text(text: string, options?: TextOptions): this;
  widthOfString(text: string, options?: TextOptions): number;
  heightOfString(text: string, options?: TextOptions): number;
  list(list: Array<string | any>, x?: number, y?: number, options?: TextOptions): this;
  list(list: Array<string | any>, options?: TextOptions): this;
}

interface PDFVector {
  save(): this;
  restore(): this;
  closePath(): this;
  lineWidth(w: number): this;
  lineCap(c: string): this;
  lineJoin(j: string): this;
  miterLimit(m: any): this;
  dash(length: number, option: any): this;
  undash(): this;
  moveTo(x: number, y: number): this;
  lineTo(x: number, y: number): this;
  bezierCurveTo(cp1x: number, cp1y: number, cp2x: number, cp2y: number, x: number, y: number): this;
  quadraticCurveTo(cpx: number, cpy: number, x: number, y: number): this;
  rect(x: number, y: number, w: number, h: number): this;
  roundedRect(x: number, y: number, w: number, h: number, r?: number): this;
  ellipse(x: number, y: number, r1: number, r2?: number): this;
  circle(x: number, y: number, raduis: number): this;
  polygon(...points: number[][]): this;
  path(path: string): this;
  fill(color?: ColorValue, rule?: RuleValue): this;
  fill(rule: RuleValue): this;
  stroke(color?: ColorValue): this;
  fillAndStroke(fillColor?: ColorValue, strokeColor?: ColorValue, rule?: RuleValue): this;
  fillAndStroke(fillColor: ColorValue, rule?: RuleValue): this;
  fillAndStroke(rule: RuleValue): this;
  clip(rule?: RuleValue): this;
  transform(m11: number, m12: number, m21: number, m22: number, dx: number, dy: number): this;
  translate(x: number, y: number): this;
  rotate(angle: number, options?: { origin?: number[] }): this;
  scale(xFactor: number, yFactor?: number, options?: { origin?: number[] }): this;
}

  // The winding / filling rule accepted by PDFKit:
  type RuleValue = "even-odd" | "evenodd" | "non-zero" | "nonzero";

  type PDFFontSource = string | Buffer | Uint8Array | ArrayBuffer;

interface PDFFont {
  font(buffer: Buffer): this;
  font(src: string, family?: string, size?: number): this;
  fontSize(size: number): this;
  currentLineHeight(includeGap?: boolean): number;
  registerFont(name: string, src?: PDFFontSource, family?: string): this;
}

interface PDFAcroForm {
  /**
         * Must call if adding AcroForms to a document. Must also call font() before
         * this method to set the default font.
         */
  initForm(): this;

  /**
         * Called automatically by document.js
         */
  endAcroForm(): this;

  /**
         * Creates and adds a form field to the document. Form fields are intermediate
         * nodes in a PDF form that are used to specify form name heirarchy and form
         * value defaults.
         * @param name - field name (T attribute in field dictionary)
         * @param options  - other attributes to include in field dictionary
         */
  formField(name: string, options?: Record<string, any>): PDFKitReference;

  /**
         * Creates and adds a Form Annotation to the document. Form annotations are
         * called Widget annotations internally within a PDF file.
         * @param name - form field name (T attribute of widget annotation
         * dictionary)
         */
  formAnnotation(name: string, type: string, x: number, y: number, w: number, h: number, options?: object): this;

  formText(name: string, x: number, y: number, w: number, h: number, options?: object): this;
  formPushButton(name: string, x: number, y: number, w: number, h: number, options?: object): this;
  formCombo(name: string, x: number, y: number, w: number, h: number, options?: object): this;
  formList(name: string, x: number, y: number, w: number, h: number, options?: object): this;
  formRadioButton(name: string, x: number, y: number, w: number, h: number, options?: object): this;
  formCheckbox(name: string, x: number, y: number, w: number, h: number, options?: object): this;
}