course-renderer/src/tasks/post-renderer.ts

Manages CA School Courses file system storage and HTML conversion

/**
 * @module post-renderer
 */

import * as path from 'path'
import { pathSanitize } from './path-sanitizer'
import { answerGenerator } from './answer-generator'
import { transform } from './md-inline'
import { anchor } from './anchor'

const through = require('through2')

/**
 * post-renderer - post rendering hooks. This allows us to cleanup what the output of the MD render.
 *                  The current hooks are 
 *                  - pathSanitize - this hook hide the internal file structure
 *                  - answerGenerator - Generates a question ID for each question and generates an answer key file for the whole courseName
 */

module.exports = ( options: any ) => ( through.obj((file: any, i: any, cb: any) => {
    const pathSep = path.sep
    const chapter = file.path
                    .replace(`${options.dest}${pathSep}`, '')
    
    const course = options.course


    try {
        let includeList = false;
        if (/\.facts.json$/.test(file.path)) {
            includeList = true;
        }

        let content = JSON.parse(file.contents.toString())
        content = transform(content, includeList)
        content = anchor(content)
        content = pathSanitize(content, course, chapter)

        answerGenerator(content, options.dest, options.sourceCourse, (err: any, data: any) => {
            if (err) {
                cb(err)
            }
            else {
                file.contents = new Buffer(JSON.stringify(data, null, 4))
                cb(null, file)
            }
        })
    }
    catch(e) {
        cb(e)
        return;
    }
}))