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path: root/source/blog.js
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const fs = require('fs')
const path = require('path')
const markdownit = require('markdown-it')
const md = markdownit({
  typographer: {
    whitespace: 'all'
  }
})
const logger = require('./logger')()

// Parse markdown
class Blog {
    constructor() {}

    async ReadBlogs() {return this.#LoadBlogs().then(output => {return output})}

    async #LoadBlogs() {
        return new Promise((res, rej) => {
            fs.readdir('./blog/', (err, files) => {
                if (err) {
                    logger.Error(`Error reading directory ${err}`)
                    rej(false)
                }

                this.blog = new Map()
                files.forEach(file => {
                    try {
                        this.blog.set(file.replace('.md', ''), fs.readFileSync(path.resolve(`./blog/${file}`), 'utf-8', (err, data) => {
                            if (err) {
                                logger.Error(err)
                                return
                            }
                            return data
                        }))
                    } catch (err) {
                        logger.Error(err)
                    }
                })
                this.blog.forEach((value, key) => {
                    const regex = /# (.*)\nDate: (.*)\n---(.*?)---/s
                    const match = value.match(regex)

                    if (match) {
                        const [, title, date, description] = match
                        this.blog.set(key, {
                            title: title,
                            date: new Date(date),
                            short: description,
                            body: md.render(value)
                        })
                    } else {
                        this.blog.set(key, {
                            title: undefined,
                            date: undefined,
                            short: undefined,
                            body: md.render(value)
                        })
                    }
                })
                res(this.#OrderByDate(this.blog))
            })
        })
    }

    #OrderByDate(x) {
        const entries =[]
        x.forEach((value, key) => {entries.push([key, value])})
        entries.sort((a, b) => {
            const dateA = b[1].date
            const dateB = a[1].date
            return dateA - dateB
        })
        return new Map(entries)
    }
}

module.exports = () => {return new Blog()}