const fs = require('async-file');
import * as path from 'path'; 

import {CommandLoader} from '../commandLoader'
import {CommandTemplate} from '../../models/commandTemplate'

export class LocalCommandTemplateLoader implements CommandLoader{

    private _basePath: string;

    constructor(basePath: string){
        this._basePath = basePath;
    }

    async loadCommandTemplateBy(filename: string): Promise<CommandTemplate> {
        console.log("Looking for: ", filename);
        const basePath = path.join(this._basePath);
            const list: Array<string> = await fs.readdir(basePath);
            const foundFile = list.find(file => file === filename);
            const template = await fs.readFile(path.join(basePath, foundFile), 'utf8');
            const response = new Promise<CommandTemplate>(resolve => {
                resolve(new CommandTemplate(foundFile, template));
            });
        return response;
    }
}