#!/usr/bin/env bash
set -euo pipefail

REPO_DIR="$(cd "$(dirname "$0")/.." && pwd)"

if ! command -v openscad &>/dev/null; then
    echo "Error: openscad not found in PATH" >&2
    exit 1
fi

count=0
skipped=0
while IFS= read -r -d '' scad_file; do
    dir="$(dirname "$scad_file")"
    name="$(basename "$scad_file" .scad)"
    output="${dir}/${name}.stl"
    if [[ -f "$output" && "$output" -nt "$scad_file" ]]; then
        echo "Skipping ${scad_file} (STL is up to date)"
        skipped=$((skipped + 1))
        continue
    fi
    echo "Rendering ${scad_file} -> ${output}"
    openscad --render -o "$output" "$scad_file"
    count=$((count + 1))
done < <(find "$REPO_DIR" -name '*.scad' -not -path "$REPO_DIR/lib/*" -print0)

echo "Generated ${count} STL file(s), skipped ${skipped}."