#!/usr/bin/env bash
set -euo pipefail
action="${1:?action required}"; root="${STEM_REPO:-$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)}"; profile="${STEM_PROFILE:-native-amd64}"; target="${STEM_TARGET:-native}"; selector="${STEM_TASK:-task1}"
tasks=(task01_positional_encoding task02_extension_shifts task03_little_endian_memory)
resolve_task(){ local value="${1,,}" name; for name in "${tasks[@]}"; do [[ "$value" == "$name" ]] && { printf '%s\n' "$name"; return; }; done; [[ "$value" =~ ^(task|t)?[-_]?0*([1-3])($|[-_].*) ]] && { printf '%s\n' "${tasks[${BASH_REMATCH[2]} - 1]}"; return; }; exit 2; }
task="$(resolve_task "$selector")"
case "$profile:$target:$action" in
  native-amd64:native:build) python3 -m py_compile "$root/tests/reference_model.py" ;;
  native-amd64:native:test|native-amd64:native:run) exec python3 "$root/tests/reference_model.py" "$task" ;;
  hazard3-sim:hazard3-baremetal:build) exec "$root/tests/test_rtl.sh" --build-only "$task" ;;
  hazard3-sim:hazard3-baremetal:test|hazard3-sim:hazard3-baremetal:run) exec "$root/tests/test_rtl.sh" "$task" ;;
  hazard3-sim:hazard3-baremetal:debug) exec "$root/tests/test_rtl.sh" --trace "$task" ;;
  *) printf 'Unsupported profile/target/action: %s/%s/%s\n' "$profile" "$target" "$action" >&2; exit 2 ;;
esac