templatemanager.js

const vscode = require('vscode');
const fs = require('fs');
const path = require('path');
const templatesDir = path.join(__dirname, 'templates');
const workspaceTemplatesDir = vscode.workspace.rootPath ? path.join(vscode.workspace.rootPath, '.vscode', 'templates') : '';

function createTemplatesDirIfNotExists() {
    return new Promise((resolve, reject) => {
        fs.stat(templatesDir, (err, stats) => {
            if (err || !stats.isDirectory())
                fs.mkdir(templatesDir, () => {
                    resolve();
                });
            else
                resolve();
        });
    });
}

class TemplateManager {
    getTemplates() {
        return new Promise((resolve, reject) => {
            createTemplatesDirIfNotExists().then(() => {
                fs.readdir(templatesDir, (err, files) => {
                    if (err) {
                        reject(err);
                        return;
                    }

                    let templates = {};
                    files.forEach(file => {
                        let baseName = file.substring(0, file.lastIndexOf('.'));
                        if (baseName)
                            templates[baseName] = path.join(templatesDir, file);
                    });

                    if (workspaceTemplatesDir) {
                        fs.readdir(workspaceTemplatesDir, (err, files) => {
                            if (!err) {
                                files.forEach(file => {
                                    let baseName = file.substring(0, file.lastIndexOf('.'));
                                    if (baseName)
                                        templates[baseName] = path.join(workspaceTemplatesDir, file);
                                });
                            }

                            resolve(templates);
                        });
                    }
                });
            });
        });
    }

    getTemplatePath(templateName) {
        return path.join(templatesDir, templateName);
    }

    getTemplateURI(templatePath) {
        return vscode.Uri.parse('file:///' + templatePath);
    }
}

module.exports = new TemplateManager();