open_json.js

/*

open csv, setup outputs for fields (?)

*/

import {
  Hunkify,
  Input,
  Output,
  State
} from '../hunks.js'


export default function OpenJSON() {
  Hunkify(this)

  let outRef = new Output('reference', 'data', this)
  this.outputs.push(outRef)

  let refUpdated = false
  let theRef = {}
  let bumpState = new State('boolean', 'release', false)
  this.states.push(bumpState)
  bumpState.onChange = (value) => {
    refUpdated = true
  }

  let readJSON = (file) => {
    let reader = new FileReader()
    reader.onload = (evt) => {
      theRef = JSON.parse(evt.target.result)
      // that's it,
      refUpdated = true
    }
    reader.readAsText(file)
  }

  this.init = () => {
    this.dom = $('<div>').get(0)
  }

  this.onload = () => {
    let btn = $('<input type="file" accept=".json">').get(0)
    $(btn).on('change', (evt) => {
      readJSON(evt.target.files[0])
    })
    $(this.dom).append(btn)
  }

  this.loop = () => {
    if(refUpdated && !outRef.io()){
      outRef.put(theRef)
      refUpdated = false
    }
  }

}