import { Interface as ReadLineInterface } from "readline";
import { Observable } from "rxjs";
import inquirer = require("../..");
import ScreenManager = require("../utils/screen-manager");

/**
 * The question-options for the `Prompt<T>`.
 */
type Question = inquirer.Question<inquirer.Answers>;

/**
 * Represents a prompt.
 *
 * @template TQuestion
 * The options for the question.
 */
declare class Prompt<TQuestion extends Question = Question> implements inquirer.prompts.PromptBase {
    /**
     * @inheritdoc
     */
    status: inquirer.prompts.PromptState;

    /**
     * Gets or sets an object which contains the answers.
     */
    protected answers: inquirer.Answers;

    /**
     * Gets or sets the options of the prompt.
     */
    protected opt: inquirer.prompts.PromptOptions<TQuestion>;

    /**
     * Gets or sets an object for performing read from and write to the console.
     */
    protected rl: ReadLineInterface;

    /**
     * Gets or sets an object for managing the console-screen.
     */
    protected screen: ScreenManager;

    /**
     * Initializes a new instance of the `Prompt<T>` class.
     *
     * @param question
     * The question to prompt the user to answer.
     *
     * @param readLine
     * An object for performing read from and write to the console.
     *
     * @param answers
     * The answer-object.
     */
    constructor(question: TQuestion, readLine: ReadLineInterface, answers: inquirer.Answers);

    /**
     * @inheritdoc
     */
    run(): Promise<any>;

    /**
     * Runs the prompt.
     *
     * @param callback
     * The callback for resolving the result.
     */
    protected _run(callback: (callback: any) => void): void;

    /**
     * Throws an error for a missing param.
     *
     * @param name
     * The name of the missing param.
     */
    protected throwParamError(name: string): void;

    /**
     * Releases all unmanaged resources.
     */
    protected close(): void;

    /**
     * Handles the submit-event.
     *
     * @param observable
     * The observable submit-event flow.
     */
    protected handleSubmitEvents<T>(observable: Observable<T>): inquirer.prompts.PromptEventPipes<T>;

    /**
     * Generates the question-string.
     *
     * @returns
     * The question-string.
     */
    protected getQuestion(): string;
}

export = Prompt;