#!/usr/bin/env bash
# Updates the bundled CEM entity-model set (the only asset PixelPics vendors itself).
#
# Source: the CEM Template Loader data (Ewan Howell / wynem) — vanilla Java entity models as JSON,
# already correctly posed. These ultimately mirror Mojang's hardcoded Java EntityModel classes.
#
# Most future-proof alternative for a NEW Minecraft version (sourced straight from the game):
#   1. Install the JsonEM mod (Fabric), set dump_models=true in .minecraft/config/jsonem.properties
#   2. Launch the game once -> models dumped to .minecraft/jsonem_dump
#   (a small format-adapter would be needed; the CEM source below covers vanilla until then.)
#
# Usage:  tools/update-cem-models.sh           # update if newer
#         tools/update-cem-models.sh --force   # always overwrite
set -euo pipefail

URL="https://wynem.com/assets/json/cem_template_models.json"
DEST="$(cd "$(dirname "$0")/.." && pwd)/src/main/resources/cem/cem_template_models.json"
TMP="$(mktemp)"
trap 'rm -f "$TMP"' EXIT

echo "Fetching $URL ..."
curl -fsSL "$URL" -o "$TMP"

# Validate + read versions/counts.
read -r NEW_VER NEW_COUNT < <(python3 -c "
import json,sys
d=json.load(open('$TMP'))
assert 'models' in d and len(d['models'])>50, 'unexpected structure'
print(d.get('version','?'), len(d['models']))
")

CUR_VER="(none)"
if [ -f "$DEST" ]; then
  CUR_VER="$(python3 -c "import json;print(json.load(open('$DEST')).get('version','?'))" 2>/dev/null || echo '?')"
fi

echo "Current: $CUR_VER   Remote: $NEW_VER   ($NEW_COUNT models)"

if [ "${1:-}" != "--force" ] && [ "$CUR_VER" = "$NEW_VER" ]; then
  echo "Already up to date. (use --force to overwrite)"
  exit 0
fi

mkdir -p "$(dirname "$DEST")"
cp "$TMP" "$DEST"
echo "Updated -> $DEST  (version $NEW_VER, $NEW_COUNT models)"
echo "Rebuild/redeploy the plugin to apply."