#!/usr/bin/env bash
# Rebuild the merged Java resource pack (ModelEngine + MythicHUD) and recompute sha1.
set -euo pipefail
PH=/opt/minecraft-stack/packhost
ME="/opt/minecraft-stack/data/plugins/ModelEngine/resource pack"
MH="/opt/minecraft-stack/data/plugins/MythicHUD/built-pack"
B="$PH/build"
rm -rf "$B"; mkdir -p "$B"

# 1) union of asset trees (no file collisions; namespaces modelengine/ vs mythichud/)
cp -a "$ME/assets/." "$B/assets/"
cp -a "$MH/assets/." "$B/assets/"
# 2) overlay dirs from both (distinct names: 1_21_* vs mythichud-1_21_*)
for d in "$ME"/1_21_* "$MH"/mythichud-*; do [ -d "$d" ] && cp -a "$d" "$B/"; done
# 2b) Strip ModelEngine's rendertype_entity_translucent core shader (+ its only
#     consumer, player_shader.glsl). It mis-binds on vanilla 1.21.11 and flickers
#     the sky; ModelEngine's own pack.mcmeta flags it in sodium.ignored_shaders.
#     Vanilla's built-in translucent shader takes over; models still render fine.
find "$B" -path '*shaders/core/rendertype_entity_translucent.*' -delete
find "$B" -path '*shaders/include/player_shader.glsl' -delete
# 3) pack.png (cosmetic) from ModelEngine
cp -a "$ME/pack.png" "$B/pack.png"
# 4) combined pack.mcmeta: base format 15, supported [15,32767], union of overlay entries
python3 - "$ME/pack.mcmeta" "$MH/pack.mcmeta" "$B/pack.mcmeta" <<'PY'
import json,sys
me=json.load(open(sys.argv[1])); mh=json.load(open(sys.argv[2]))
out={"pack":{"pack_format":15,"min_format":15,"max_format":32767,
             "supported_formats":[15,32767],
             "description":"Bagel's World (ModelEngine + MythicHUD merged)"}}
entries=[]
for src in (me,mh):
    entries += src.get("overlays",{}).get("entries",[])
if entries: out["overlays"]={"entries":entries}
# keep ModelEngine's sodium hint if present
if "sodium" in me: out["sodium"]=me["sodium"]
json.dump(out,open(sys.argv[3],"w"),indent=2)
PY
# 5) zip it (store-level; deterministic ordering)
cd "$B"
rm -f "$PH/pack.zip"
zip -q -X -r "$PH/pack.zip" . -x '.*'
cd "$PH"
SHA1=$(sha1sum pack.zip | cut -d' ' -f1)
echo "$SHA1" > "$PH/pack.sha1"
echo "built pack.zip  size=$(stat -c%s pack.zip)  sha1=$SHA1"
# Versioned URL busts Cloudflare's cache (CF keys cache by query string) — bump
# ?v= to the sha1 prefix each rebuild, then update server.properties + restart mc-main.
echo "server.properties:"
echo "  resource-pack=https://mcpack.bage1s-media.com/pack.zip?v=${SHA1:0:8}"
echo "  resource-pack-sha1=$SHA1"