// Variables used by Scriptable.
// These must be at the very top of the file. Do not edit.
// icon-color: deep-blue; icon-glyph: shopping-cart;

const cacheMinutes = 60 * 2
const today = new Date()
let width
const h = 5
const debug = false

if (config.widgetFamily === 'small') {
  width = 100
} else {
  width = 200
}

////////////////////////////////////////////////////////////
let widgetInputRAW = args.widgetParameter;
let widgetInput;
if (widgetInputRAW !== null) {
  widgetInput = widgetInputRAW.toString().trim().split(';')
  
  if (widgetInput[2] && !/^[\d]+$/.test(widgetInput[2])) {
    throw new Error('Third parameter has to be a number')
  }
} else {
  throw new Error('No Ordernumber and E-Mail address set')
}
////////////////////////////////////////////////////////////
const files = FileManager.local()

const path = files.joinPath(files.cacheDirectory(), "widget-apple-store-order")

const cacheExists = files.fileExists(path)

const cacheDate = cacheExists ? files.modificationDate(path) : 0
////////////////////////////////////////////////////////////
const parseDate = (stringDate) => {
  const months = {
    'Januar': 0,
    'Februar': 1,
    'März': 2,
    'April': 3,
    'Mai': 4,
    'Juni': 5,
    'Juli': 6,
    'August': 7,
    'September': 8,
    'Oktober': 9,
    'November': 10,
    'Dezember': 11
  }
  const m = stringDate.match(/([\d]{1,2})[.\s]+([\w]+)[\s]?([0-9]{4})?/)
  const monthKey = Object.keys(months).find((key) => {
    return key === m[2] || key.substring(0,3) == m[2]
  })
  if (!m[3]) {
    m[3] = new Date().getFullYear()
  }
  return new Date(m[3], months[monthKey], m[1])
}
////////////////////////////////////////////////////////////
function creatProgress(total,havegone){
  const context = new DrawContext()
  context.size= new Size(width, h)
  context.opaque = false
  context.respectScreenScale = true
  context.setFillColor(new Color('#d2d2d7'))
  const path = new Path()
  path.addRoundedRect(new Rect(0, 0, width, h), 3, 2)
  context.addPath(path)
  context.fillPath()
  context.setFillColor(new Color('#008009'))
  const path1 = new Path()
  const path1width = (width*havegone/total > width) ? width : width*havegone/total
  path1.addRoundedRect(new Rect(0, 0, path1width, h), 3, 2)
  context.addPath(path1)
  context.fillPath()
  return context.getImage()
}
////////////////////////////////////////////////////////////
const getTimeRemaining = function (endtime){
  const total = Date.parse(endtime) - Date.parse(new Date());
  const seconds = Math.floor( (total/1000) % 60 );
  const minutes = Math.floor( (total/1000/60) % 60 );
  const hours = Math.floor( (total/(1000*60*60)) % 24 );
  const days = Math.floor( total/(1000*60*60*24) );

  return {
    total,
    days,
    hours,
    minutes,
    seconds
  };
}
////////////////////////////////////////////////////////////
const getOrderdetails = async (ordernumber, email) => {
  const req = new Request(`https://store.apple.com/xc/de/vieworder/${ordernumber}/${email}`)
  const res = await req.loadString()
  const rawJSON = res.match(/<script id="init_data" type="application\/json">(.*)<\/script>/)
  if(!rawJSON) {
    return null
  }
  const data = JSON.parse(rawJSON[1])
  if (!data['orderDetail']) {
    console.log(data)
    throw new Error('no orderDetail attribute') 
  }
  return data
}
////////////////////////////////////////////////////////////
let orderDetails
if (cacheExists && (today.getTime() - cacheDate.getTime()) < (cacheMinutes * 60 * 1000)) {
  console.log("Get from Cache")
  orderDetails = JSON.parse(files.readString(path))
} else {
  console.log("Get from Website")
  try {
    orderDetails = await getOrderdetails(widgetInput[0], widgetInput[1])
    if(orderDetails !== null) {
      console.log("Write to Cache")
      files.writeString(path, JSON.stringify(orderDetails))
    }
  } catch (e) {
    console.error('Fetching data from website failed')
    console.error(e)
    if (cacheExists) {
      console.warn('Fallback to Cache')
      orderDetails = JSON.parse(files.readString(path))
    }
  }
}
if (debug) {
  console.log(JSON.stringify(orderDetails, null, 2))
}

let widget = new ListWidget();

if (!orderDetails) {
  widget.addText('No order found')
} else {
  if (widgetInput[2] && !orderDetails['orderDetail']['orderItems']['c'][widgetInput[2] - 1]) {
    throw new Error(`No Item on position ${widgetInput[2]}`)
  }
  
  const itemPosition = orderDetails['orderDetail']['orderItems']['c'][(widgetInput[2] -1) || 0]
  const itemDetails = orderDetails['orderDetail']['orderItems'][itemPosition]['orderItemDetails'] 
  const orderDate = parseDate(orderDetails['orderDetail']['orderHeader']['d']['orderPlacedDate'])
  const deliveryDate = parseDate(itemDetails['d']['deliveryDate'])
  const itemName = itemDetails['d']['productName']
  const itemImageUrl = itemDetails['d']['imageData']['src'].replace(/wid=[\d]+/, 'wid=200').replace(/hei=[\d]+/, 'hei=200')
  const itemImage = await (new Request(itemImageUrl)).loadImage()
  const remainingDays = getTimeRemaining(deliveryDate).days + 1;
  
  widget.setPadding(10, 10, 10, 10)
  widget.backgroundColor = Color.white()
  widget.url = `https://store.apple.com/xc/de/vieworder/${widgetInput[0]}/${widgetInput[1]}`
  
  const headlineText = widget.addText(' Order Status')
  headlineText.font = Font.regularSystemFont(14)
  headlineText.textColor =  Color.black()
  
  widget.addSpacer()
  
  const productStack = widget.addStack()
  productStack.layoutHorizontally()
  
  itemImageElement = productStack.addImage(itemImage)
  itemImageElement.imageSize = new Size(30, 30)
  
  productStack.addSpacer(10)
  
  const itemNameText = productStack.addText(itemName)
  itemNameText.font = Font.regularSystemFont(16)
  itemNameText.textColor =  Color.black()
  itemNameText.minimumScaleFactor = 0.3
  itemNameText.lineLimit = 2
  
  
  widget.addSpacer()
  
  let postFix;
  if(remainingDays === 1) {
    postFix = 'Day'
  } else { 
    postFix = 'Days'
  }
  
  const remainingDayText = widget.addText(remainingDays + ' ' + postFix)
  remainingDayText.font = Font.regularSystemFont(28)
  remainingDayText.textColor =  Color.black()
  remainingDayText.centerAlignText()
  
  widget.addSpacer()
  
  const total = (deliveryDate - orderDate) / (1000*60*60*24)
  const daysGone = total - remainingDays
  
  widget.addImage(creatProgress(total, daysGone))
  
  widget.addSpacer(5)
  
  const footerStack = widget.addStack()
  footerStack.layoutHorizontally()
  
  const orderDateText = footerStack.addDate(orderDate)
  orderDateText.textColor =  Color.black()
  orderDateText.font = Font.regularSystemFont(8)
  
  footerStack.addSpacer()
  
  const deliveryDateText = footerStack.addDate(deliveryDate)
  deliveryDateText.textColor =  Color.black()
  deliveryDateText.font = Font.regularSystemFont(8)
}

if(!config.runsInWidget) {
  await widget.presentSmall()
} else {
  // Tell the system to show the widget.
  Script.setWidget(widget)
  Script.complete()
}