#!/bin/bash
set -euo pipefail

THRESHOLD="${1:-100}"
PROFILE=$(mktemp)
trap 'rm -f "$PROFILE"' EXIT

go test -coverprofile="$PROFILE" -covermode=atomic ./...

# Exclude main.go from coverage calculation (entrypoint, not unit-testable)
COVERAGE=$(grep -v "main\.go:" "$PROFILE" | go tool cover -func=/dev/stdin | grep ^total: | awk '{print $3}' | tr -d '%')

if awk "BEGIN{exit(!($COVERAGE < $THRESHOLD))}"; then
    echo "FAIL: coverage ${COVERAGE}% is below ${THRESHOLD}%"
    exit 1
fi

echo "OK: coverage ${COVERAGE}% meets ${THRESHOLD}% threshold"