import * as path from 'path';

import * as fs from 'fs-extra';

import { EXTENSION_ROOT_DIR } from '../../client/common/constants';

const insidersVersion = /^\^(\d+\.\d+\.\d+)-(insider|\d{8})$/;

export function getChannel(): string {

if (process.env.VSC_PYTHON_CI_TEST_VSC_CHANNEL) {

return process.env.VSC_PYTHON_CI_TEST_VSC_CHANNEL;

}

const packageJsonPath = path.join(EXTENSION_ROOT_DIR, 'package.json');

if (fs.pathExistsSync(packageJsonPath)) {

const packageJson = fs.readJSONSync(packageJsonPath);

const engineVersion = packageJson.engines.vscode;

if (insidersVersion.test(engineVersion)) {

// Can't pass in the version number for an insiders build;

// https://github.com/microsoft/vscode-test/issues/176

return 'insiders';

}

return engineVersion.replace('^', '');

}

return 'stable';

}