import { dimensions } from './shared'

export default function(part) {
  let {
    utils,
    store,
    sa,
    Point,
    points,
    Path,
    paths,
    Snippet,
    snippets,
    options,
    measurements,
    complete,
    paperless,
    macro
  } = part.shorthand()

  // Hide Brian paths
  for (let key of Object.keys(paths)) paths[key].render = false

  // Handle stretch
  for (let i in points) points[i].x = points[i].x * (1 - options.stretchFactor)

  // Rename cb (center back) to cf (center front)
  for (let key of ['Neck', 'Shoulder', 'Armhole', 'Waist', 'Hips', 'Hem']) {
    points[`cf${key}`] = new Point(points[`cb${key}`].x, points[`cb${key}`].y)
    //delete points[`cb${key}`];
  }

  // Neckline
  points.cfNeck = points.cfNeck.shift(
    -90,
    options.necklineDrop * (measurements.centerBackNeckToWaist + measurements.naturalWaistToHip)
  )

  // Strap
  points.strapCenter = points.neck.shiftFractionTowards(
    points.shoulder,
    options.shoulderStrapPlacement
  )
  points.strapLeft = points.strapCenter.shiftTowards(
    points.neck,
    points.neck.dist(points.shoulder) * options.shoulderStrapWidth
  )
  points.strapRight = points.strapLeft.rotate(180, points.strapCenter)
  points.necklineCorner = utils.beamsIntersect(
    points.strapLeft,
    points.strapRight.rotate(-90, points.strapLeft),
    points.cfNeck.shift(0, points.armholePitch.x / 4),
    points.cfNeck
  )
  points.strapLeftCp2 = points.strapLeft.shiftFractionTowards(
    points.necklineCorner,
    options.necklineBend
  )
  points.cfNeckCp1 = points.cfNeck.shiftFractionTowards(points.necklineCorner, options.necklineBend)

  // Hips
  points.hips.x =
    ((measurements.hipsCircumference + options.hipsEase * measurements.hipsCircumference) / 4) *
    (1 - options.stretchFactor)
  points.waist.x = points.hips.x // Because stretch
  points.waistCp2 = points.waist.shift(90, points.armhole.dy(points.waist) / 2)

  // Hem
  points.hem.x = points.hips.x

  // Armhole drop
  let side = new Path()
    .move(points.hem)
    .line(points.waist)
    .curve(points.waistCp2, points.armhole, points.armhole)
  let split = side.intersectsY(points.armhole.y * (1 + options.armholeDrop)).pop()
  paths.side = side.split(split)[0]
  paths.side.render = false
  points.aaronArmhole = split

  // Armhole
  points.armholeCorner = utils.beamsIntersect(
    points.aaronArmhole,
    points.aaronArmhole.shift(180, 10),
    points.strapRight,
    points.strapLeft.rotate(90, points.strapRight)
  )
  points.armholeCp2 = points.aaronArmhole.shiftFractionTowards(points.armholeCorner, 0.8)
  points.strapRightCp1 = points.strapRight.shiftFractionTowards(points.armholeCorner, 0.6)

  // Seamline
  paths.seam = new Path()
    .move(points.cfNeck)
    .line(points.cfHem)
    .line(points.hem)
    .line(points.waist)
    .join(paths.side)
    .curve(points.armholeCp2, points.strapRightCp1, points.strapRight)
    .line(points.strapLeft)
    .curve(points.strapLeftCp2, points.cfNeckCp1, points.cfNeck)
    .close()
    .attr('class', 'fabric')

  // Store length of armhole and neck opening
  store.set(
    'frontArmholeLength',
    new Path()
      .move(points.aaronArmhole)
      .curve(points.armholeCp2, points.strapRightCp1, points.strapRight)
      .length()
  )
  store.set(
    'frontNeckOpeningLength',
    new Path()
      .move(points.strapLeft)
      .curve(points.cfNeckCp1, points.cfNeckCp1, points.cfNeck)
      .length()
  )

  // Complete pattern?
  if (complete) {
    macro('cutonfold', {
      from: points.cfNeck,
      to: points.cfHem,
      grainline: true
    })
    points.title = new Point(points.waist.x / 2, points.waist.y)
    macro('title', { at: points.title, nr: 1, title: 'front' })
    points.logo = points.title.shift(-90, 75)
    snippets.logo = new Snippet('logo', points.logo)

    if (sa) {
      paths.saShoulder = new Path()
        .move(points.strapRight)
        .line(points.strapLeft)
        .offset(sa)
        .line(points.strapLeft)
        .attr('class', 'fabric sa')
      paths.saShoulder.move(points.strapRight).line(paths.saShoulder.start())
      paths.saSide = paths.side
        .offset(sa)
        .line(points.aaronArmhole)
        .attr('class', 'fabric sa')
      paths.saHem = new Path()
        .move(points.cfHem)
        .line(points.hem)
        .offset(sa * 2.5)
        .attr('class', 'fabric sa')
        .line(paths.saSide.start())
      paths.saHem.move(points.cfHem).line(paths.saHem.start())
    }
  }

  // Paperless?
  if (paperless) {
    dimensions(macro, points, sa)
    macro('vd', {
      from: points.cfHem,
      to: points.cfNeck,
      x: points.cfHem.x - sa - 15
    })
  }

  return part
}