/**
 * Copyright (c) 2018 The xterm.js authors. All rights reserved.
 * @license MIT
 */

import { IFunctionIdentifier, ITerminalOptions as IPublicTerminalOptions } from '@xterm/xterm';
import type { IEvent } from './primitives/Event';
import type { CursorStyle, IColorEvent, ColorIndex, ColorRequestType, IDisposable, IParams, SpecialColorIndex } from './primitives/Types';

// TODO: The options that are not in the public API should be reviewed
export interface ITerminalOptions extends IPublicTerminalOptions {
  [key: string]: any;
  convertEol?: boolean;
  termName?: string;
}

export interface IScrollEvent {
  position: number;
}

export interface IModes {
  insertMode: boolean;
}

export interface IDecPrivateModes {
  applicationCursorKeys: boolean;
  applicationKeypad: boolean;
  bracketedPasteMode: boolean;
  colorSchemeUpdates: boolean;
  cursorBlink: boolean | undefined;
  cursorStyle: CursorStyle | undefined;
  origin: boolean;
  reverseWraparound: boolean;
  sendFocus: boolean;
  synchronizedOutput: boolean;
  win32InputMode: boolean;
  wraparound: boolean; // defaults: xterm - true, vt100 - false
}

/**
 * Kitty keyboard protocol state.
 * Maintains per-screen stacks of enhancement flags.
 */
export interface IKittyKeyboardState {
  /** Current active enhancement flags (for current screen) */
  flags: number;
  /** Saved flags for main screen when alt is active */
  mainFlags: number;
  /** Saved flags for alternate screen when main is active */
  altFlags: number;
  /** Stack of flags for main screen */
  mainStack: number[];
  /** Stack of flags for alternate screen */
  altStack: number[];
}

/**
 * windowOptions
 */
export interface IWindowOptions {
  restoreWin?: boolean;
  minimizeWin?: boolean;
  setWinPosition?: boolean;
  setWinSizePixels?: boolean;
  raiseWin?: boolean;
  lowerWin?: boolean;
  refreshWin?: boolean;
  setWinSizeChars?: boolean;
  maximizeWin?: boolean;
  fullscreenWin?: boolean;
  getWinState?: boolean;
  getWinPosition?: boolean;
  getWinSizePixels?: boolean;
  getScreenSizePixels?: boolean;
  getCellSizePixels?: boolean;
  getWinSizeChars?: boolean;
  getScreenSizeChars?: boolean;
  getIconTitle?: boolean;
  getWinTitle?: boolean;
  pushTitle?: boolean;
  popTitle?: boolean;
  setWinLines?: boolean;
}

/**
 * Calls the parser and handles actions generated by the parser.
 */
export interface IInputHandler {
  onTitleChange: IEvent<string>;

  parse(data: string | Uint8Array, promiseResult?: boolean): void | Promise<boolean>;
  print(data: Uint32Array, start: number, end: number): void;
  registerCsiHandler(id: IFunctionIdentifier, callback: (params: IParams) => boolean | Promise<boolean>): IDisposable;
  registerDcsHandler(id: IFunctionIdentifier, callback: (data: string, param: IParams) => boolean | Promise<boolean>): IDisposable;
  registerEscHandler(id: IFunctionIdentifier, callback: () => boolean | Promise<boolean>): IDisposable;
  registerOscHandler(ident: number, callback: (data: string) => boolean | Promise<boolean>): IDisposable;
  registerApcHandler(id: IFunctionIdentifier, callback: (data: string) => boolean | Promise<boolean>): IDisposable;

  /** C0 BEL */ bell(): boolean;
  /** C0 LF */ lineFeed(): boolean;
  /** C0 CR */ carriageReturn(): boolean;
  /** C0 BS */ backspace(): boolean;
  /** C0 HT */ tab(): boolean;
  /** C0 SO */ shiftOut(): boolean;
  /** C0 SI */ shiftIn(): boolean;

  /** CSI @ */ insertChars(params: IParams): boolean;
  /** CSI SP @ */ scrollLeft(params: IParams): boolean;
  /** CSI A */ cursorUp(params: IParams): boolean;
  /** CSI SP A */ scrollRight(params: IParams): boolean;
  /** CSI B */ cursorDown(params: IParams): boolean;
  /** CSI C */ cursorForward(params: IParams): boolean;
  /** CSI D */ cursorBackward(params: IParams): boolean;
  /** CSI E */ cursorNextLine(params: IParams): boolean;
  /** CSI F */ cursorPrecedingLine(params: IParams): boolean;
  /** CSI G */ cursorCharAbsolute(params: IParams): boolean;
  /** CSI H */ cursorPosition(params: IParams): boolean;
  /** CSI I */ cursorForwardTab(params: IParams): boolean;
  /** CSI J */ eraseInDisplay(params: IParams): boolean;
  /** CSI K */ eraseInLine(params: IParams): boolean;
  /** CSI L */ insertLines(params: IParams): boolean;
  /** CSI M */ deleteLines(params: IParams): boolean;
  /** CSI P */ deleteChars(params: IParams): boolean;
  /** CSI S */ scrollUp(params: IParams): boolean;
  /** CSI T */ scrollDown(params: IParams, collect?: string): boolean;
  /** CSI X */ eraseChars(params: IParams): boolean;
  /** CSI Z */ cursorBackwardTab(params: IParams): boolean;
  /** CSI ` */ charPosAbsolute(params: IParams): boolean;
  /** CSI a */ hPositionRelative(params: IParams): boolean;
  /** CSI b */ repeatPrecedingCharacter(params: IParams): boolean;
  /** CSI c */ sendDeviceAttributesPrimary(params: IParams): boolean;
  /** CSI > c */ sendDeviceAttributesSecondary(params: IParams): boolean;
  /** CSI d */ linePosAbsolute(params: IParams): boolean;
  /** CSI e */ vPositionRelative(params: IParams): boolean;
  /** CSI f */ hVPosition(params: IParams): boolean;
  /** CSI g */ tabClear(params: IParams): boolean;
  /** CSI h */ setMode(params: IParams, collect?: string): boolean;
  /** CSI l */ resetMode(params: IParams, collect?: string): boolean;
  /** CSI m */ charAttributes(params: IParams): boolean;
  /** CSI n */ deviceStatus(params: IParams, collect?: string): boolean;
  /** CSI p */ softReset(params: IParams, collect?: string): boolean;
  /** CSI q */ setCursorStyle(params: IParams, collect?: string): boolean;
  /** CSI r */ setScrollRegion(params: IParams, collect?: string): boolean;
  /** CSI s */ saveCursor(params: IParams): boolean;
  /** CSI u */ restoreCursor(params: IParams): boolean;
  /** CSI ' } */ insertColumns(params: IParams): boolean;
  /** CSI ' ~ */ deleteColumns(params: IParams): boolean;

  /** OSC 0 */
  /** OSC 2 */ setTitle(data: string): boolean;
  /** OSC 4 */ setOrReportIndexedColor(data: string): boolean;
  /** OSC 10 */ setOrReportFgColor(data: string): boolean;
  /** OSC 11 */ setOrReportBgColor(data: string): boolean;
  /** OSC 12 */ setOrReportCursorColor(data: string): boolean;
  /** OSC 104 */ restoreIndexedColor(data: string): boolean;
  /** OSC 110 */ restoreFgColor(data: string): boolean;
  /** OSC 111 */ restoreBgColor(data: string): boolean;
  /** OSC 112 */ restoreCursorColor(data: string): boolean;

  /** ESC E */ nextLine(): boolean;
  /** ESC = */ keypadApplicationMode(): boolean;
  /** ESC > */ keypadNumericMode(): boolean;
  /** ESC % G */
  /** ESC % @ */ selectDefaultCharset(): boolean;
  /** ESC ( C */
  /** ESC ) C */
  /** ESC * C */
  /** ESC + C */
  /** ESC - C */
  /** ESC . C */
  /** ESC / C */ selectCharset(collectAndFlag: string): boolean;
  /** ESC D */ index(): boolean;
  /** ESC H */ tabSet(): boolean;
  /** ESC M */ reverseIndex(): boolean;
  /** ESC c */ fullReset(): boolean;
  /** ESC n */
  /** ESC o */
  /** ESC | */
  /** ESC } */
  /** ESC ~ */ setgLevel(level: number): boolean;
  /** ESC # 8 */ screenAlignmentPattern(): boolean;
}

export interface IParseStack {
  paused: boolean;
  cursorStartX: number;
  cursorStartY: number;
  decodedLength: number;
  position: number;
}