import { dimensions } from './shared.mjs'
import { front } from "./front.mjs"

export const back = {
  from: front,
  name: 'aaron.back',
  options: {
    backNeckCutout: 0.05,
    backlineBend: { pct: 50, min: 25, max: 100, menu: 'style' }
  },
  draft: part => {
    const {
      store,
      sa,
      Point,
      points,
      Path,
      paths,
      options,
      complete,
      paperless,
      macro,
      utils,
      units,
      measurements,
    } = part.shorthand()

    // Lower back neck a bit
    points.cbNeck.y = measurements.neck / 10

    points.strapLeftCp2 = utils.beamsIntersect(
      points.strapLeft,
      points.strapCenter.rotate(90, points.strapLeft),
      points.cbNeck,
      points.cbNeck.shift(0, 10)
    )

    points.armholeCp2 = points.armhole.shiftFractionTowards(
      points.armholeCorner,
      options.backlineBend
    )
    points.strapRightCp1 = points.strapRight.shiftFractionTowards(
      points.armholeCorner,
      options.backlineBend
    )

    points.anchor = points.cbNeck.clone()

    // Seamline
    paths.seam = new Path()
      .move(points.cbNeck)
      .line(points.cbHem)
      .line(points.hem)
      .curve_(points.hipsCp2, points.armhole)
      .curve(points.armholeCp2, points.strapRightCp1, points.strapRight)
      .line(points.strapLeft)
      .line(points.strapLeft)
      .curve(points.strapLeftCp2, points.cbNeck, points.cbNeck)
      .close()
      .attr('class', 'fabric')

    // Complete pattern?
    if (complete) {
      let neckOpeningLength =
        new Path()
          .move(points.strapLeft)
          .curve(points.strapLeftCp2, points.cbNeck, points.cbNeck)
          .length() + store.get('frontNeckOpeningLength')
      let armholeLength =
        new Path()
          .move(points.armhole)
          .curve(points.armholeCp2, points.strapRightCp1, points.strapRight)
          .length() + store.get('frontArmholeLength')
      points.bindingAnchor = new Point(points.armhole.x / 4, points.armhole.y)
        .attr('data-text', 'cutTwoStripsToFinishTheArmholes')
        .attr('data-text', ':\n')
        .attr('data-text', `2x: ${units(sa * 6 || 60)} x ${units(armholeLength * 0.95 + 2 * sa)}`)
        .attr('data-text', '\n \n')
        .attr('data-text', 'cutOneStripToFinishTheNeckOpening')
        .attr('data-text', ':\n')
        .attr('data-text', 'width')
        .attr('data-text', ':')
        .attr(
          'data-text',
          `${units((sa || 10) * 6)} x ${units(neckOpeningLength * 2 * 0.95 + 2 * sa)}`
        )
      //.attr('data-text-class', 'text-sm')

      macro('cutonfold', {
        from: points.cfNeck,
        to: points.cfHem,
        grainline: true,
      })

      macro('title', { at: points.title, nr: 2, title: 'back' })
      points.scaleboxAnchor = points.scalebox = points.title.shift(90, 100)
      macro('scalebox', { at: points.scalebox })
    }

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

    return part
  }
}