#!/usr/bin/env bash
set -euo pipefail

usage() {
  echo "Usage: tools/teardown_bridge_capture.sh --bridge <bridge> [--mirror-if mitmcap0] [--capture-if mitmcap1]"
}

BRIDGE=""
MIRROR_IF="mitmcap0"
CAPTURE_IF="mitmcap1"

while [[ $# -gt 0 ]]; do
  case "$1" in
    --bridge) BRIDGE="$2"; shift 2 ;;
    --mirror-if) MIRROR_IF="$2"; shift 2 ;;
    --capture-if) CAPTURE_IF="$2"; shift 2 ;;
    -h|--help) usage; exit 0 ;;
    *) echo "Unknown argument: $1" >&2; usage; exit 1 ;;
  esac
done

if [[ -n "$BRIDGE" ]] && ip link show "$BRIDGE" >/dev/null 2>&1; then
  while read -r port; do
    [[ -n "$port" ]] || continue
    tc qdisc del dev "$port" clsact 2>/dev/null || true
  done < <(bridge link show master "$BRIDGE" | awk -F': ' '{print $2}' | awk '{print $1}')
fi

tc qdisc del dev "$MIRROR_IF" clsact 2>/dev/null || true
tc qdisc del dev "$CAPTURE_IF" clsact 2>/dev/null || true

if ip link show "$MIRROR_IF" >/dev/null 2>&1; then
  ip link del "$MIRROR_IF"
fi