// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT License.

'use strict';

import { inject, injectable } from 'inversify';

import { IApplicationShell } from '../../common/application/types';

import { IPersistentStateFactory } from '../../common/types';

import { Common, Python27Support } from '../../common/utils/localize';

import { IPython27SupportPrompt } from '../contracts';

import { sendTelemetryEvent } from '../../telemetry';

import { EventName } from '../../telemetry/constants';

import { PythonEnvironment } from '../../pythonEnvironments/info';

const doNotShowPromptStateKey = 'MESSAGE_KEY_FOR_27_SUPPORT_PROMPT';

@injectable()

export class Python27SupportPrompt implements IPython27SupportPrompt {

// If the prompt has been shown earlier during this session.

private promptShownInSession = false;

constructor(

@inject(IApplicationShell) private appShell: IApplicationShell,

@inject(IPersistentStateFactory) private persistentState: IPersistentStateFactory,

) {}

public async shouldShowPrompt(interpreter: PythonEnvironment): Promise<boolean> {

// Check if "Do not show again" has been selected before.

const doNotShowAgain = this.persistentState.createGlobalPersistentState<boolean>(

doNotShowPromptStateKey,

false,

);

if (doNotShowAgain.value || this.promptShownInSession) {

return Promise.resolve(false);

}

// Check if current environment version is Python 2.7

if (interpreter.version?.major === 2 && interpreter.version?.minor === 7) {

return Promise.resolve(true);

}

return Promise.resolve(false);

}

public async showPrompt(): Promise<void> {

const selection = await this.appShell.showInformationMessage(Python27Support.bannerMessage(), Common.gotIt());

// Never show the prompt again.

if (selection === Common.gotIt()) {

this.persistentState.createGlobalPersistentState<boolean>(doNotShowPromptStateKey, false).updateValue(true);

}

// Do not show the prompt again in this session.

this.promptShownInSession = true;

sendTelemetryEvent(EventName.PYTHON_27_SUPPORT_PROMPT);

}

}