script-concat-config-gatsby.js

const fs = require('fs')
const YAML = require('json-to-pretty-yaml')
const configPath = '/static/admin'
const configs = require('require-all')(__dirname + `${configPath}/config`)
let obj = {
  'backend': {},
  'collections': []
}

const createNewCollectionsType = (category, name) => {
  obj[category][name] = {
    'label' : name,
    'name'  : name,
    'files' : []
  }
}

const createUniqueObject = () => {
  Object.entries(configs).map((file) => {
    const infos = file[0]
    const data = file[1]
    const category = (infos.indexOf('-') > -1) ? infos.split('-')[0] : infos
    const type = (infos.indexOf('-') > -1) ? infos.split('-')[1] : null
    const name = (infos.indexOf('-') > -1) ? infos.split('-')[2] : null

    if(type && name) {
      if(!obj[category][type]) {
        createNewCollectionsType(category, type)
      }
      return obj[category][type]['files'].push(data)
    } else if(type) {
      
      return obj[category].push(data)
    }
    
    return obj[category] = data
  })

  return constructFinalObject()
}

const constructFinalObject = () => {
  var output = {
    'collections': []
  }

  Object.entries(obj).map((category) => {
    (category[0] === 'collections') ?
      Object.entries(category[1]).map((entry) => {
        const firstObjectInList = entry[1]

        return output['collections'].push(firstObjectInList)
      })
    : Object.entries(category[1]).map(entry => {
      let key = entry[0];
      let value = entry[1];
      
      return output[key] = value
    });
  })

  saveToFile(output)
}

const saveToFile = (output) => {
  const fileName = `.${configPath}/config.yml`

  fs.writeFile(fileName, YAML.stringify(output), function(err) {
    if(err) {
        return console.log(err)
    }

    console.log(`⚙️  Config was successfully created!`)
  })
}

createUniqueObject()