#!/usr/bin/env bash
# Reconstruct the 5 byte-identical Core ML .mlpackage fixtures from one shared
# seed plus per-variant Manifest.json files.
#
# The ONLY difference between the variants is Manifest.json (specifically the
# rootModelIdentifier value). model.mlmodel and the weights are identical across
# all five variants, so they are shipped once as seed.mlpackage.zip instead of
# being duplicated 5x. This script unpacks the seed and rebuilds the exact same
# packages used in the report (verified byte-identical).
set -euo pipefail
HERE="$(cd "$(dirname "$0")" && pwd)"
OUT="${1:-$HERE/models}"
mkdir -p "$OUT"

# Unpack the shared seed once into the output area (keeps the repo itself clean).
SEEDROOT="$OUT/_seed"
if [ ! -d "$SEEDROOT/seed.mlpackage" ]; then
  rm -rf "$SEEDROOT"
  mkdir -p "$SEEDROOT"
  unzip -q "$HERE/seed.mlpackage.zip" -d "$SEEDROOT"
fi
SEED="$SEEDROOT/seed.mlpackage"

for v in baseline root_id_missing root_id_empty root_key_absent root_points_to_weights; do
  rm -rf "$OUT/$v.mlpackage"
  cp -R "$SEED" "$OUT/$v.mlpackage"
  cp "$HERE/manifest-$v.json" "$OUT/$v.mlpackage/Manifest.json"
done
echo "Reconstructed 5 .mlpackage fixtures in: $OUT"