#!/usr/bin/env bash
# Build the wasm package (../build.sh), test it under Node against files
# written by h5py and netCDF4 (make_fixture.py) — opened from bytes, and
# opened by URL from a local range-capable HTTP server (serve.py) — then
# load the viewer page in headless Chromium if one is found (browser.sh).
#
# Needs node, the wasm-bindgen CLI (see ../build.sh) and a Python with h5py,
# netCDF4 and numpy: CLAWHDF5_PYTHON names it (default python3). Without that
# Python the test is skipped, unless CLAWHDF5_REQUIRE_INTEROP=1.
#
# WASM_BIG_MB (default 200) sizes the large file of the range-request
# budget test (0 leaves it out); it is written under TMPDIR.
# CLAWHDF5_WASM_CORPUS=DIR also compares every HDF5 file under DIR (up to
# 16 MiB) read over HTTP with the same file read from bytes.
set -euo pipefail

HERE="$(cd "$(dirname "$0")" && pwd)"
PY="${CLAWHDF5_PYTHON:-python3}"

command -v node >/dev/null || { echo "node not found" >&2; exit 1; }
if ! "$PY" -c "import h5py, netCDF4, numpy" >/dev/null 2>&1; then
    if [ "${CLAWHDF5_REQUIRE_INTEROP:-0}" = "1" ]; then
        echo "CLAWHDF5_REQUIRE_INTEROP=1 but $PY lacks h5py/netCDF4/numpy" >&2
        exit 1
    fi
    echo "SKIP: $PY lacks h5py/netCDF4/numpy"
    exit 0
fi

bash "$HERE/../build.sh"
fix="$(mktemp -d)"
server=""
cleanup() {
    [ -n "$server" ] && kill "$server" 2>/dev/null || true
    rm -rf "$fix"
}
trap cleanup EXIT
WASM_BIG_MB="${WASM_BIG_MB:-200}" "$PY" "$HERE/make_fixture.py" "$fix"

# The fixtures (and the corpus) over HTTP with range support.
roots=(--root "fix=$fix")
[ -n "${CLAWHDF5_WASM_CORPUS:-}" ] && roots+=(--root "corpus=$CLAWHDF5_WASM_CORPUS")
"$PY" "$HERE/serve.py" "${roots[@]}" > "$fix/port" &
server=$!
for _ in $(seq 50); do
    [ -s "$fix/port" ] && break
    sleep 0.1
done
node "$HERE/test.mjs" "$HERE/../pkg" "$fix" "http://127.0.0.1:$(head -1 "$fix/port")"

# The page itself, in headless Chromium when one is available.
status=0
bash "$HERE/browser.sh" "$fix" || status=$?
if [ "$status" = 3 ]; then
    echo "SKIP: viewer page in a browser (no Chromium; set CHROME)"
elif [ "$status" != 0 ]; then
    exit "$status"
fi