$fn = 64;

// --- Parametric Dimensions ---
bottle_radius = 32;
core_radius = 14;
neck_radius = 16;
wall = 4;
hole_radius = 3.5;

// Z-height segments for easy stacking
h_base_chamfer = 10;
h_base_straight = 8;
h_slope = bottle_radius - core_radius; // 18mm (ensures 45-degree printable overhang)
h_core = 24;
h_shoulder = 16;
h_neck = 16;

// Cumulative Z heights
z1 = h_base_chamfer;
z2 = z1 + h_base_straight;
z3 = z2 + h_slope;
z4 = z3 + h_core;
z5 = z4 + h_slope;
z6 = z5 + h_base_straight;
z7 = z6 + h_shoulder;
z8 = z7 + h_neck;

module potion_bottle() {
    difference() {
        // Outer Shell
        union() {
            cylinder(r1=bottle_radius-10, r2=bottle_radius, h=h_base_chamfer + 0.01);
            translate([0, 0, z1]) cylinder(r=bottle_radius, h=h_base_straight + 0.01);
            translate([0, 0, z2]) cylinder(r1=bottle_radius, r2=core_radius, h=h_slope + 0.01);
            translate([0, 0, z3]) cylinder(r=core_radius, h=h_core + 0.01);
            translate([0, 0, z4]) cylinder(r1=core_radius, r2=bottle_radius, h=h_slope + 0.01);
            translate([0, 0, z5]) cylinder(r=bottle_radius, h=h_base_straight + 0.01);
            translate([0, 0, z6]) cylinder(r1=bottle_radius, r2=neck_radius, h=h_shoulder + 0.01);
            translate([0, 0, z7]) cylinder(r=neck_radius, h=h_neck);

            // Flared Lip
            translate([0, 0, z8 - 4]) cylinder(r1=neck_radius, r2=neck_radius+4, h=2.01);
            translate([0, 0, z8 - 2]) cylinder(r=neck_radius+4, h=4.01);
            translate([0, 0, z8 + 2]) cylinder(r1=neck_radius+4, r2=neck_radius, h=2);
        }

        // Inner Cavity (Hollow out the center for storing cable ends/plugs)
        union() {
            translate([0, 0, wall]) cylinder(r1=bottle_radius-10-wall, r2=bottle_radius-wall, h=h_base_chamfer-wall + 0.01);
            translate([0, 0, z1]) cylinder(r=bottle_radius-wall, h=h_base_straight + 0.01);
            translate([0, 0, z2]) cylinder(r1=bottle_radius-wall, r2=core_radius-wall, h=h_slope + 0.01);
            translate([0, 0, z3]) cylinder(r=core_radius-wall, h=h_core + 0.01);
            translate([0, 0, z4]) cylinder(r1=core_radius-wall, r2=bottle_radius-wall, h=h_slope + 0.01);
            translate([0, 0, z5]) cylinder(r=bottle_radius-wall, h=h_base_straight + 0.01);
            translate([0, 0, z6]) cylinder(r1=bottle_radius-wall, r2=neck_radius-wall, h=h_shoulder + 0.01);
            translate([0, 0, z7]) cylinder(r=neck_radius-wall, h=h_neck + 10); // Extend through top
        }

        // Cable pass-through holes in the spool core
        translate([0, 0, z3 + h_core*0.25]) rotate([90, 0, 0]) cylinder(r=hole_radius, h=bottle_radius*3, center=true);
        translate([0, 0, z3 + h_core*0.75]) rotate([90, 0, 0]) cylinder(r=hole_radius, h=bottle_radius*3, center=true);

        // Cable retaining notches on the outer flanges
        for (i = [0 : 90 : 270]) {
            rotate([0, 0, i]) {
                translate([bottle_radius, 0, z1 + h_base_straight/2]) sphere(r=hole_radius);
                translate([bottle_radius, 0, z5 + h_base_straight/2]) sphere(r=hole_radius);
            }
        }
    }
}

module cork() {
    // Positioned beside the bottle for easy support-free printing
    translate([bottle_radius * 2, 0, 0]) {
        cylinder(r1=neck_radius-wall-0.5, r2=neck_radius-wall+2, h=15);
        translate([0, 0, 15]) scale([1, 1, 0.4]) sphere(r=neck_radius-wall+2);
    }
}

// Render the models
potion_bottle();
cork();