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

IMGSIZE="1280,960"
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
while IFS= read -r -d '' scad_file; do
    dir="$(dirname "$scad_file")"
    output="${dir}/preview.png"
    echo "Rendering ${scad_file} -> ${output}"
    openscad --render --autocenter --viewall --imgsize "$IMGSIZE" -o "$output" "$scad_file"
    count=$((count + 1))
done < <(find "$REPO_DIR" -name '*.scad' -not -path "$REPO_DIR/lib/*" -print0)

echo "Generated ${count} preview(s)."