$fn = 64;

// Parametric Dimensions
width = 200;
depth = 120;
base_height = 80;
wall = 3;

// Cable Slots
slot_w = 20;
slot_h = 25;

// Aesthetics
strap_w = 15;
strap_t = 2;
strap_inset = 25;
lip_gap = 0.6; // Tolerance for lid fit

// Reusable Cable Slot Module
module cable_slot() {
    translate([0, -slot_w/2, -1]) 
        cube([wall + 10, slot_w, slot_h + 1]);
    translate([0, 0, slot_h]) 
        rotate([0, 90, 0]) 
        cylinder(r=slot_w/2, h=wall + 10);
}

// Treasure Chest Base
module chest_base() {
    difference() {
        union() {
            // Main body
            cube([width, depth, base_height]);

            // Decorative Straps
            translate([strap_inset, -strap_t, 0]) 
                cube([strap_w, depth + 2*strap_t, base_height]);
            translate([width - strap_inset - strap_w, -strap_t, 0]) 
                cube([strap_w, depth + 2*strap_t, base_height]);

            // Lock plate (bottom half)
            translate([width/2 - 15, -strap_t - 2, base_height - 20]) 
                cube([30, strap_t + 2.1, 20]);

            // Inner lip for lid registration
            translate([wall + lip_gap, wall + lip_gap, base_height])
                cube([width - 2*(wall + lip_gap), depth - 2*(wall + lip_gap), 5]);
        }

        // Hollow interior
        translate([wall, wall, wall]) 
            cube([width - 2*wall, depth - 2*wall, base_height + 10]);

        // Hollow inner lip
        translate([wall*2, wall*2, base_height - 1])
            cube([width - 4*wall, depth - 4*wall, 7]);

        // Left cable slot
        translate([-5, depth/2, 0]) 
            cable_slot();

        // Right cable slot
        translate([width - wall - 5, depth/2, 0]) 
            cable_slot();

        // Back cable slot
        translate([width/2, depth - 5, 0]) 
            rotate([0, 0, 90]) 
            cable_slot();

        // Keyhole cutout
        translate([width/2, -strap_t - 5, base_height - 8]) 
            rotate([-90, 0, 0]) 
            cylinder(r=3, h=10);
        translate([width/2 - 1.5, -strap_t - 5, base_height - 15]) 
            cube([3, 10, 7]);
    }
}

// Treasure Chest Lid
module chest_lid() {
    difference() {
        union() {
            // Main dome
            translate([0, depth/2, 0]) 
                rotate([0, 90, 0]) 
                cylinder(r=depth/2, h=width);

            // Decorative Straps
            translate([strap_inset, depth/2, 0]) 
                rotate([0, 90, 0]) 
                cylinder(r=depth/2 + strap_t, h=strap_w);
            translate([width - strap_inset - strap_w, depth/2, 0]) 
                rotate([0, 90, 0]) 
                cylinder(r=depth/2 + strap_t, h=strap_w);

            // Lock plate (top half)
            translate([width/2 - 15, -strap_t - 2, 0]) 
                cube([30, strap_t + 2.1, 15]);
        }

        // Hollow dome interior
        translate([wall, depth/2, 0]) 
            rotate([0, 90, 0]) 
            cylinder(r=depth/2 - wall, h=width - 2*wall);

        // Flatten bottom (remove lower half of cylinders for printing)
        translate([-5, -strap_t - 5, -depth - 5]) 
            cube([width + 10, depth + 2*strap_t + 10, depth + 5]);
    }
}

// Layout for 3D Printing
chest_base();

translate([0, depth + 30, 0]) 
    chest_lid();