$fn = 64;

// --- Parameters ---

// Width of the inside cavity (accommodates the meter body)
inner_width = 56; 
// Depth of the inside cavity
inner_depth = 36; 
// Height of the holding basket
basket_height = 30; 
// Wall thickness for the basket
wall_thickness = 3; 
// Thickness of the mounting backplate
mount_thickness = 5; 
// Radius for rounded corners
corner_radius = 4; 

// Width of the slot for the soil probes
probe_slot_width = 30; 
// Depth of the slot for the soil probes
probe_slot_depth = 16; 

// Height of the backplate extending above the basket
mount_height = 35; 
// Diameter of the mounting screws
screw_dia = 4.5; 
// Diameter of the screw heads (for countersink)
screw_head_dia = 8.5; 

// --- Derived Variables ---
outer_width = inner_width + 2 * wall_thickness;
total_height = basket_height + mount_height;
backplate_y = wall_thickness + inner_depth;

module soil_moisture_meter_holder() {
    difference() {
        // --- Main Solid Body ---
        union() {
            // Basket Exterior
            hull() {
                // Front left corner
                translate([-outer_width/2 + corner_radius, corner_radius, 0])
                    cylinder(r=corner_radius, h=basket_height);
                // Front right corner
                translate([outer_width/2 - corner_radius, corner_radius, 0])
                    cylinder(r=corner_radius, h=basket_height);
                // Back face (meets backplate)
                translate([-outer_width/2, backplate_y, 0])
                    cube([outer_width, 0.1, basket_height]);
            }
            
            // Mounting Backplate
            hull() {
                // Base anchors
                translate([-outer_width/2, backplate_y, 0])
                    cube([outer_width, mount_thickness, 0.1]);
                // Top rounded corners
                translate([-outer_width/2 + corner_radius, backplate_y, total_height - corner_radius])
                    rotate([-90, 0, 0]) 
                    cylinder(r=corner_radius, h=mount_thickness);
                translate([outer_width/2 - corner_radius, backplate_y, total_height - corner_radius])
                    rotate([-90, 0, 0]) 
                    cylinder(r=corner_radius, h=mount_thickness);
            }
        }

        // --- Cutouts ---
        
        // Inner Cavity (Meter Rest)
        hull() {
            translate([-inner_width/2 + corner_radius, wall_thickness + corner_radius, wall_thickness])
                cylinder(r=corner_radius, h=basket_height + 1);
            translate([inner_width/2 - corner_radius, wall_thickness + corner_radius, wall_thickness])
                cylinder(r=corner_radius, h=basket_height + 1);
            translate([-inner_width/2, backplate_y - 0.1, wall_thickness])
                cube([inner_width, 0.1, basket_height + 1]);
        }

        // Probe Slot (Bottom Hole)
        probe_y_start = wall_thickness + (inner_depth - probe_slot_depth) / 2;
        hull() {
            translate([-probe_slot_width/2 + corner_radius, probe_y_start + corner_radius, -1])
                cylinder(r=corner_radius, h=wall_thickness + 2);
            translate([probe_slot_width/2 - corner_radius, probe_y_start + corner_radius, -1])
                cylinder(r=corner_radius, h=wall_thickness + 2);
            translate([-probe_slot_width/2 + corner_radius, probe_y_start + probe_slot_depth - corner_radius, -1])
                cylinder(r=corner_radius, h=wall_thickness + 2);
            translate([probe_slot_width/2 - corner_radius, probe_y_start + probe_slot_depth - corner_radius, -1])
                cylinder(r=corner_radius, h=wall_thickness + 2);
        }

        // Screw Holes
        translate([-inner_width/3, backplate_y - 1, basket_height + mount_height/2])
            rotate([-90, 0, 0])
            cylinder(d=screw_dia, h=mount_thickness + 2);
            
        translate([inner_width/3, backplate_y - 1, basket_height + mount_height/2])
            rotate([-90, 0, 0])
            cylinder(d=screw_dia, h=mount_thickness + 2);

        // Screw Countersinks
        translate([-inner_width/3, backplate_y - 0.01, basket_height + mount_height/2])
            rotate([-90, 0, 0])
            cylinder(d1=screw_head_dia, d2=screw_dia, h=mount_thickness - 1);
            
        translate([inner_width/3, backplate_y - 0.01, basket_height + mount_height/2])
            rotate([-90, 0, 0])
            cylinder(d1=screw_head_dia, d2=screw_dia, h=mount_thickness - 1);
    }
}

// Render the object
soil_moisture_meter_holder();