bookiza/generators/addPages.js

const path = require('path')
const fse = require('fs-extra')
const chalk = require('chalk')

function addPages({ startAt, pages, mode }) {
    let htmlExt = mode.HTML || 'html'
    let cssExt = mode.CSS || 'css'

    // let headExt = mode.HEAD || 'html'
    // let javascriptExt = mode.JS || 'js'

    let bodyTemplate = ''

    fse.readFile(path.join('.', 'templates', `body.${htmlExt}`), { encoding: 'utf-8' })
        .then(content => {
            process.stdout.write(chalk.yellow(`Generating [ ${chalk.magenta(pages)} ] blank page(s)… :`))

            bodyTemplate = content // Set bodyTemplate for next promise. Ugly :(

            // Blank manuscript structure:
            let blankPages = []

            for (let i = startAt, endAt = startAt + pages; i < endAt; i++) {
                let pageDir = path.join('.', 'manuscript', `page-${i}`)

                let thisDir = fse.ensureDir(pageDir) // promise { pending }

                blankPages.push(thisDir)
            }

            return Promise.all(blankPages)
        }).then(() => {
            let pendingWrites = [] // TODO: Consider fse.copy instead of IO per page.

            for (let i = startAt, endAt = startAt + pages; i < endAt; i++) {
                let styleFile = path.join('.', 'manuscript', `page-${i}`, `style.${cssExt}`)
                let htmlFile = path.join('.', 'manuscript', `page-${i}`, `body.${htmlExt}`)

                let thisWrite = fse.writeFile(styleFile, '')
                let thatWrite = fse.writeFile(htmlFile, bodyTemplate)

                pendingWrites.push(thisWrite)
                pendingWrites.push(thatWrite)
            }

            return Promise.all(pendingWrites)
        }).then(() => {
            return process.stdout.write(`${chalk.blue(' done.')}` + '\n')
        }).catch((err) => {
            if (err) return console.log('Couldn\'t create pages', err)
            throw err
        })
}

module.exports.addPages = addPages