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

  if (options.bowStyle === "square") options.tipWidth = options.knotWidth;

  for (let option of [
    "ribbonWidth",
    "bandLength",
    "tipWidth",
    "knotWidth",
    "bowLength",
    "collarEase"
  ])
    store.set(option, measurements.neckCircumference * options[option]);

  // For easy access
  const knot = store.get("knotWidth");
  const ribbon = store.get("ribbonWidth");
  const tip = store.get("tipWidth");
  const band = store.get("bandLength");
  const transition = band * options.transitionLength;
  const bow = store.get("bowLength");

  // Points
  points.bandBottomLeft = new Point(0, ribbon / 2);
  points.bandTopLeft = points.bandBottomLeft.flipY();
  points.bandBottomRight = points.bandBottomLeft.shift(0, band);
  points.bandTopRight = points.bandBottomRight.flipY();

  points.transitionBottomRight = new Point(band + transition, knot / 2);
  points.transitionTopRight = points.transitionBottomRight.flipY();

  points.tip1Bottom = new Point(band + transition + 0.5 * bow, tip / 2);
  points.tip1Top = points.tip1Bottom.flipY();
  points.tip2Bottom = new Point(band + transition + 1.5 * bow, tip / 2);
  points.tip2Top = points.tip2Bottom.flipY();
  points.knotBottom = new Point(band + transition + bow, knot / 2);
  points.knotTop = points.knotBottom.flipY();

  if (options.endStyle === "pointed" || options.endStyle === "rounded") {
    points.tip = new Point(points.tip2Bottom.x + points.tip2Bottom.y, 0);
  } else points.tip = new Point(points.tip2Bottom.x, 0);

  points.grainlineStart = new Point(0, 0);
  points.titleAnchor = new Point(points.tip1Top.x, 0);

  // Paths
  paths.cap = new Path().move(points.tip2Bottom);
  if (options.endStyle === "straight") {
    paths.cap = new Path().move(points.tip2Bottom).line(points.tip2Top);
  } else if (options.endStyle === "pointed") {
    paths.cap = new Path()
      .move(points.tip2Bottom)
      .line(points.tip)
      .line(points.tip2Top);
  } else {
    points.roundBottom = new Point(points.tip.x, points.tip2Bottom.y);
    points.roundTop = points.roundBottom.flipY();
    macro("round", {
      from: points.tip2Bottom,
      to: points.tip,
      via: points.roundBottom,
      prefix: "bottom"
    });
    macro("round", {
      from: points.tip,
      to: points.tip2Top,
      via: points.roundTop,
      prefix: "top"
    });
    paths.cap = paths.bottomRounded.join(paths.topRounded);
  }
  paths.cap.render = false;

  if (options.bowStyle === "diamond" || options.bowStyle === "butterfly") {
    const cpl = options.bowStyle === "diamond" ? bow / 10 : bow / 4;

    points.transitionBottomRightCp2 = points.bandBottomRight.shiftOutwards(
      points.transitionBottomRight,
      cpl
    );
    points.transitionTopRightCp1 = points.transitionBottomRightCp2.flipY();
    points.tip1TopCp2 = points.tip1Top.shift(180, cpl);
    points.tip1TopCp1 = points.tip1Top.shift(0, cpl);
    points.tip1BottomCp1 = points.tip1Bottom.shift(180, cpl);
    points.tip1BottomCp2 = points.tip1Bottom.shift(0, cpl);
    points.knotTopCp2 = points.knotTop.shift(180, cpl);
    points.knotTopCp1 = points.knotTop.shift(0, cpl);
    points.knotBottomCp2 = points.knotBottom.shift(0, cpl);
    points.knotBottomCp1 = points.knotBottom.shift(180, cpl);
    points.tip2TopCp2 = points.tip2Top.shift(180, cpl);
    points.tip2BottomCp1 = points.tip2Bottom.shift(180, cpl);

    paths.seam = new Path()
      .move(points.bandTopLeft)
      .line(points.bandBottomLeft)
      .line(points.bandBottomRight)
      .line(points.transitionBottomRight)
      .curve(
        points.transitionBottomRightCp2,
        points.tip1BottomCp1,
        points.tip1Bottom
      )
      .curve(points.tip1BottomCp2, points.knotBottomCp1, points.knotBottom)
      .curve(points.knotBottomCp2, points.tip2BottomCp1, points.tip2Bottom)
      .join(paths.cap)
      .line(points.tip2Top)
      .curve(points.tip2TopCp2, points.knotTopCp1, points.knotTop)
      .curve(points.knotTopCp2, points.tip1TopCp1, points.tip1Top)
      .curve(
        points.tip1TopCp2,
        points.transitionTopRightCp1,
        points.transitionTopRight
      )
      .line(points.bandTopRight)
      .line(points.bandTopLeft)
      .close();
  } else {
    paths.seam = new Path()
      .move(points.bandTopLeft)
      .line(points.bandBottomLeft)
      .line(points.bandBottomRight)
      .line(points.transitionBottomRight)
      .line(points.tip2Bottom)
      .join(paths.cap)
      .line(points.tip2Top)
      .line(points.transitionTopRight)
      .line(points.bandTopRight)
      .line(points.bandTopLeft)
      .close();
  }

  paths.seam.attr("class", "fabric");

  // Complete?
  if (complete) {
    if (sa) paths.sa = paths.seam.offset(sa).attr("class", "fabric sa");

    macro("grainline", {
      from: points.grainlineStart,
      to: points.tip
    });
    points.logoAnchor = points.tip.shift(180, 20);
    snippets.logo = new Snippet("logo", points.logoAnchor).attr(
      "data-scale",
      0.5
    );

    // Paperless?
    if (paperless) {
      let baseY = points.tip2Bottom.y + 15 + sa;
      if (options.bowStyle === "butterfly" || options.bowStyle === "diamond") {
        macro("hd", {
          from: points.knotBottom,
          to: points.tip2Bottom,
          y: baseY
        });
        baseY += 15;
        macro("hd", {
          from: points.tip1Bottom,
          to: points.tip2Bottom,
          y: baseY
        });
        baseY += 15;
        macro("vd", {
          from: points.tip1Bottom,
          to: points.tip1Top
        });
      }
      macro("hd", {
        from: points.transitionBottomRight,
        to: points.tip2Bottom,
        y: baseY
      });
      baseY += 15;
      macro("hd", {
        from: points.bandBottomRight,
        to: points.tip2Bottom,
        y: baseY
      });
      baseY += 15;
      macro("hd", {
        from: points.bandBottomLeft,
        to: points.tip2Bottom,
        y: baseY
      });
      macro("vd", {
        from: points.bandBottomRight,
        to: points.bandTopRight
      });
      macro("vd", {
        from: points.transitionBottomRight,
        to: points.transitionTopRight
      });
      macro("vd", {
        from: points.tip2Bottom,
        to: points.tip2Top,
        x: points.tip.x + 15 + sa
      });
      if (options.endStyle !== "straight") {
        macro("hd", {
          from: points.tip2Bottom,
          to: points.tip,
          y: points.tip2Bottom.y + 15 + sa
        });
      }
    }
  }

  return part;
}