#!/usr/bin/env bash
# tests/run-rust: Run Rust test suite via cargo nextest (D-030)
# Exit: 0 = all pass, non-zero = failure
# Stdout: {"suite":"rust","total":N,"passed":N,"failed":N,"duration_ms":N}
set -euo pipefail

FILTER=""
while [[ $# -gt 0 ]]; do
    case "$1" in
        --filter) FILTER="${2:-}"; shift 2 ;;
        --filter=*) FILTER="${1#--filter=}"; shift ;;
        *) echo "Unknown argument: $1" >&2; exit 2 ;;
    esac
done

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$REPO_ROOT/server"

START_MS=$(date +%s%3N)
TMPOUT=$(mktemp)

NEXTEST_ARGS=(nextest run --color never)
if [[ -n "$FILTER" ]]; then
    NEXTEST_ARGS+=(-E "test(~${FILTER})")
fi

set +e
cargo "${NEXTEST_ARGS[@]}" 2>&1 | tee "$TMPOUT" >&2
EXIT_CODE=${PIPESTATUS[0]}
set -e

END_MS=$(date +%s%3N)
DURATION_MS=$((END_MS - START_MS))

# Parse nextest summary: "    Summary [  0.123s] N tests run: X passed[, Y failed], Z skipped"
# (older nextest uses "Finished", newer uses "Summary" — match both)
SUMMARY=$(grep -E "^\s*(Summary|Finished)" "$TMPOUT" | tail -1 || true)

_extract_num() {
    local haystack="$1" pattern="$2"
    echo "$haystack" | grep -oE "[0-9]+ $pattern" | grep -oE '^[0-9]+' || echo 0
}

TOTAL=0; PASSED=0; FAILED=0
if [[ -n "$SUMMARY" ]]; then
    TOTAL=$(_extract_num "$SUMMARY" "tests? run")
    PASSED=$(_extract_num "$SUMMARY" "passed")
    FAILED=$(_extract_num "$SUMMARY" "failed")
fi

rm -f "$TMPOUT"
printf '{"suite":"rust","total":%d,"passed":%d,"failed":%d,"duration_ms":%d}\n' \
    "${TOTAL:-0}" "${PASSED:-0}" "${FAILED:-0}" "$DURATION_MS"
exit $EXIT_CODE