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import type { KeyCode } from "../keycode/key_code.ts";import {  GenericPrompt,  GenericPromptKeys,  GenericPromptOptions,  GenericPromptSettings,} from "./_generic_prompt.ts";import { brightBlue, dim, stripAnsiCode, underline } from "./deps.ts";
/** Generic input prompt options. */export interface GenericInputPromptOptions<TValue, TRawValue>  extends GenericPromptOptions<TValue, TRawValue> {  /** Keymap to assign key names to prompt actions. */  keys?: GenericInputKeys;}
/** Generic input prompt settings. */export interface GenericInputPromptSettings<TValue, TRawValue>  extends GenericPromptSettings<TValue, TRawValue> {  keys?: GenericInputKeys;}
/** Input keys options. */export interface GenericInputKeys extends GenericPromptKeys {  /** Cursor left keymap. Default is `["left"]`. */  moveCursorLeft?: string[];  /** Cursor right keymap. Default is `["right"]`. */  moveCursorRight?: string[];  /** Delete cursor left keymap. Default is `["backspace"]`. */  deleteCharLeft?: string[];  /** Delete cursor right keymap. Default is `["delete"]`. */  deleteCharRight?: string[];}
/** Generic input prompt representation. */export abstract class GenericInput<  TValue,  TRawValue,> extends GenericPrompt<TValue, TRawValue> {  protected abstract readonly settings: GenericInputPromptSettings<    TValue,    TRawValue  >;  protected inputValue = "";  protected inputIndex = 0;
  public getDefaultSettings(    options: GenericInputPromptOptions<TValue, TRawValue>,  ): GenericInputPromptSettings<TValue, TRawValue> {    const settings = super.getDefaultSettings(options);    return {      ...settings,      keys: {        moveCursorLeft: ["left"],        moveCursorRight: ["right"],        deleteCharLeft: ["backspace"],        deleteCharRight: ["delete"],        ...(settings.keys ?? {}),      },    };  }
  protected getCurrentInputValue(): string {    return this.inputValue;  }
  protected message(): string {    const message: string = super.message() + " " + this.settings.pointer + " ";    this.cursor.x = stripAnsiCode(message).length + this.inputIndex + 1;    return message + this.input();  }
  protected input(): string {    return underline(this.inputValue);  }
  protected highlight(    value: string | number,    color1: (val: string) => string = dim,    color2: (val: string) => string = brightBlue,  ): string {    value = value.toString();    const inputLowerCase = this.getCurrentInputValue().toLowerCase();    const valueLowerCase = value.toLowerCase();    const index = valueLowerCase.indexOf(inputLowerCase);    const matched: string = value.slice(index, index + inputLowerCase.length);    return index >= 0      ? color1(value.slice(0, index)) + color2(matched) +        color1(value.slice(index + inputLowerCase.length))      : value;  }
  /**   * Handle user input event.   * @param event Key event.   */  protected async handleEvent(event: KeyCode): Promise<void> {    switch (true) {      case this.isKey(this.settings.keys, "moveCursorLeft", event):        this.moveCursorLeft();        break;      case this.isKey(this.settings.keys, "moveCursorRight", event):        this.moveCursorRight();        break;      case this.isKey(this.settings.keys, "deleteCharRight", event):        this.deleteCharRight();        break;      case this.isKey(this.settings.keys, "deleteCharLeft", event):        this.deleteChar();        break;      case event.char && !event.meta && !event.ctrl:        this.addChar(event.char!);        break;      default:        await super.handleEvent(event);    }  }
  /** Add character to current input. */  protected addChar(char: string): void {    this.inputValue = this.inputValue.slice(0, this.inputIndex) + char +      this.inputValue.slice(this.inputIndex);    this.inputIndex++;  }
  /** Move prompt cursor left. */  protected moveCursorLeft(): void {    if (this.inputIndex > 0) {      this.inputIndex--;    }  }
  /** Move prompt cursor right. */  protected moveCursorRight(): void {    if (this.inputIndex < this.inputValue.length) {      this.inputIndex++;    }  }
  /** Delete char left. */  protected deleteChar(): void {    if (this.inputIndex > 0) {      this.inputIndex--;      this.deleteCharRight();    }  }
  /** Delete char right. */  protected deleteCharRight(): void {    if (this.inputIndex < this.inputValue.length) {      this.inputValue = this.inputValue.slice(0, this.inputIndex) +        this.inputValue.slice(this.inputIndex + 1);    }  }}