#!/usr/bin/env bash
# M-INTEROCEPTION P0 gate: engram_scan_nodes_emb_json read-only builtin.
# Throwaway HOME + /tmp only. Never touches ~/.neuron or :8742.
set -u
HERE="$(cd "$(dirname "$0")" && pwd)"
RT="$HERE/../../lang/runtime/el_runtime.c"
ST="$HERE/../../lang/runtime/engram_store.c"
GEO="$HERE/../../lang/runtime/engram_geometry.c"
VIDX="$HERE/../../lang/runtime/engram_vindex.c"
INC="$HERE/../../lang/runtime"
WORK="$(mktemp -d /tmp/engram-p0-XXXXXX)"
export HOME="$WORK/home"; mkdir -p "$HOME"
unset ENGRAM_STORE
fail=0

echo "== compile (plain) =="
gcc -O1 -std=c11 -I "$INC" "$HERE/test_interoception_p0_emb.c" "$RT" "$ST" "$GEO" "$VIDX" \
    -lcurl -lm -o "$WORK/p0" 2>"$WORK/cc.log" || { echo "COMPILE FAILED"; cat "$WORK/cc.log"; rm -rf "$WORK"; exit 1; }

D="$WORK/d"; mkdir -p "$D"
"$WORK/p0" "$D" || { echo "FAIL: run"; fail=1; }

echo
echo "== assertions =="
python3 - "$D" <<'PY'
import json, sys, os
d = sys.argv[1]
def load(n):
    with open(os.path.join(d,n)) as f: return json.load(f)
rc = 0
def check(c,m):
    global rc
    print(("  PASS: " if c else "  FAIL: ")+m)
    if not c: rc=1

alln = load("emb_all.json")
check(len(alln)==3, f"emb dump returns all 3 nodes (got {len(alln)})")
# salience-sorted: high, mid, low
labels=[n["label"] for n in alln]
check(labels==["emb-high","emb-mid","noemb-low"], f"salience-sorted order {labels}")
for n in alln:
    L=len(n["emb"])
    check(L==n["emb_dim"], f"{n['label']}: len(emb)={L} == emb_dim={n['emb_dim']}")
check(alln[0]["emb_dim"]==16 and alln[1]["emb_dim"]==16, "embedded nodes report dim 16")
check(alln[2]["emb_dim"]==0 and alln[2]["emb"]==[], "un-embedded node -> emb_dim 0, emb []")
# first emb value round-trips ~0.10
check(abs(alln[0]["emb"][0]-0.10)<1e-3, f"emb[0] round-trips (~0.10, got {alln[0]['emb'][0]})")

pg0=load("emb_pg0.json"); pg1=load("emb_pg1.json")
check(len(pg0)==1 and len(pg1)==1, "pagination: one node per page")
check(pg0[0]["id"]=="n-high" and pg1[0]["id"]=="n-mid", f"pages disjoint & ordered ({pg0[0]['id']},{pg1[0]['id']})")

plain=load("plain.json")
check(len(plain)==3, "existing scan_nodes_json still returns 3")
check(all("emb" not in n for n in plain), "existing scan_nodes_json carries NO emb (behavior-neutral)")
sys.exit(rc)
PY
[ $? -ne 0 ] && fail=1

echo
echo "== latency (one 256-page over the 3-node copy) =="
python3 - "$D" <<'PY'
import os
# timing was measured inside C not here; report emb payload size as a proxy
sz=os.path.getsize(os.path.join(os.sys.argv[1] if False else __import__('sys').argv[1],"emb_all.json"))
print(f"  emb_all.json payload = {sz} bytes for 3 nodes")
PY

echo
echo "== ASan+UBSan =="
gcc -O1 -g -std=c11 -fsanitize=address,undefined -fno-sanitize-recover=undefined \
    -I "$INC" "$HERE/test_interoception_p0_emb.c" "$RT" "$ST" "$GEO" "$VIDX" \
    -lcurl -lm -o "$WORK/p0.san" 2>"$WORK/san_cc.log" || { echo "SAN COMPILE FAILED"; tail -20 "$WORK/san_cc.log"; fail=1; }
if [ -x "$WORK/p0.san" ]; then
  export ASAN_OPTIONS=detect_leaks=0
  DS="$WORK/ds"; mkdir -p "$DS"
  "$WORK/p0.san" "$DS" >/dev/null 2>"$WORK/san_run.log"
  if grep -qiE 'runtime error|AddressSanitizer|Sanitizer|ERROR: ' "$WORK/san_run.log"; then
    echo "  FAIL: sanitizer findings:"; grep -iE 'runtime error|Sanitizer|ERROR' "$WORK/san_run.log" | head; fail=1
  else echo "  ok: ASan+UBSan clean"; fi
fi

echo
if [ "$fail" -eq 0 ]; then echo "====== P0 EMB-ENDPOINT GATE: PASS ======"; else echo "====== P0 EMB-ENDPOINT GATE: FAIL ======"; fi
rm -rf "$WORK"
exit $fail