vscode-jekyll-post-file-generator/src/extension/commands.ts

import {
    Uri,
    window
} from 'vscode';
import { FileController } from './api/controller';

function handleError(err) {
    if (err) {
        window.showErrorMessage(err);
    }
    return err;
}

export interface INewFileOptions {
    relativeToRoot?: boolean;
}

export interface INewFolderOptions {
    relativeToRoot?: boolean;
}

export const controller = new FileController();

export function newJekyllFile(options?: INewFileOptions) {

    const { relativeToRoot = false } = options || {};

    const delim: string = '-';
    const ending: string = 'xxxxx.md';
    const date: Date = new Date();
    let monthDay: string = date.getDate().toString(); // Get the day as a number (1-31)
    let month: number = date.getMonth(); // Get the month as a number (0-11) 2018-05-05-xxxxx.md
    const fullYear: string = date.getFullYear().toString();

    if (monthDay.length === 1) {
        monthDay = '0'.concat(monthDay);
    }

    month++;
    let monthStr: string = month.toString();

    if (monthStr.length === 1) {
        monthStr = '0'.concat(monthStr);
    }

    const outputStr: string = fullYear.concat(delim, monthStr, delim, monthDay, delim, ending);

    // console.log(outputStr);
    // console.log(date);

    return controller.showNewJekyllFileDialog({ value: outputStr, valueSelection: [11, 16] })
        .then((fileItem) => controller.create({ fileItem }))
        .then((fileItem) => controller.openFileInEditor(fileItem))
        .catch(handleError);
}