#!/usr/bin/env bash
# Runtime qualification. A requested unavailable GPU is an error, never a skip.
set -euo pipefail
cd "$(dirname "$0")/.."
backend="${1:-cpu}"
features=()
case "$backend" in
    cpu) ;;
    wgpu|wgpu-integrated|wgpu-cpu) features=(--features wgpu) ;;
    cuda) features=(--features cuda) ;;
    *) echo "Unknown backend: $backend" >&2; exit 2 ;;
esac
suffix=""
if [[ "${2:-}" == "--fusion" ]]; then
    features+=(--features fusion)
    suffix="-fusion"
elif [[ $# -gt 1 ]]; then
    echo "Usage: bash scripts/validate_backend.sh [cpu|wgpu|wgpu-integrated|wgpu-cpu|cuda] [--fusion]" >&2
    exit 2
fi
export BURN_QUANTUM_DEVICE="$backend"
output="artifacts/validation/$backend$suffix"
mkdir -p "$output"
cargo test --locked -p burn_quantum "${features[@]}" --test backend_parity -- --test-threads=1 --nocapture 2>&1 | tee "$output/parity.log"
cargo test --locked -p burn_quantum_example "${features[@]}" --bins -- --test-threads=1 --nocapture 2>&1 | tee "$output/example-tests.log"
bash scripts/run_examples.sh "$@" 2>&1 | tee "$output/examples.log"
for example in bell qudit train hybrid profile; do
    cargo run --locked -p burn_quantum "${features[@]}" --example "$example" 2>&1 | tee "$output/$example.log"
done