include <parameters.scad>

use <connector.scad>
use <hook.scad>
use <nipple.scad>
use <rail.scad>
use <screw_hole.scad>

module back_connector_half(
  border_side = false,
  border_top = false,
  border_bottom = false
) difference() {
  connector_half(border_side, border_top, border_bottom);

  if (!border_side)
    translate([tray_width/2 - bar_thickness, 0, tray_height - bar_thickness/2])
    rotate([-90, 0, 0])
    screw_hole(nut_depth = 1.1 * nut_height);
}

module back_connector(
  border_left   = false,
  border_right  = false,
  border_top    = false,
  border_bottom = false
) {
  difference() {
    connector(border_left, border_right, border_top, border_bottom) {
        mirror() back_connector_half(border_left,  border_top, border_bottom);
                 back_connector_half(border_right, border_top, border_bottom);
    }

    // screw holes for PCB screws
    for (h = [bar_thickness/2, tray_height - bar_thickness/2])
      translate([0, 0, h])
      rotate([-90, 0, 0])
      screw_hole(nut_depth = 1.1 * nut_height);
  }

  // hooks to hold PCB during assembly
  if (!border_right)
    for (p = [[rail_width/2 + bar_thickness/2, bar_thickness/2],
              [tray_width/4,                   tray_height - bar_thickness/2]])
      translate([p[0], bar_thickness, p[1]])
      hook(diameter = 0.7 * rod_diameter,
           length_rest  = backplane_thickness,
           length_slide = backplane_thickness);
}

back_connector();

echo("MODEL INFO: tray height = ", tray_height);
echo("MODEL INFO: tray width = ",  tray_width);