list-tunnels

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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
TUNNEL_STATE_DIR="${HOME}/.cache/worm/tunnels"
SOCKET_DIR="${HOME}/.cache/worm/sockets"
CADDYFILE="${SCRIPT_DIR}/Caddyfile"

if [ ! -d "$TUNNEL_STATE_DIR" ] || [ -z "$(ls -A "$TUNNEL_STATE_DIR" 2>/dev/null)" ]; then
    echo "No active tunnels"
    exit 0
fi

echo "Active Tunnels:"
echo "==============="
echo ""

active=0
stale=0

for state_file in "$TUNNEL_STATE_DIR"/*.json; do
    if [ -f "$state_file" ]; then
        # `|| true` on each: grep exits 1 when a field is absent (e.g. legacy
        # state files predating ssh_tunnel_pid) and set -e + pipefail would kill
        # the script otherwise.
        domain=$(grep -o '"domain": "[^"]*"' "$state_file" | cut -d'"' -f4 || true)
        ssh_addr=$(grep -o '"ssh_addr": "[^"]*"' "$state_file" | cut -d'"' -f4 || true)
        project=$(grep -o '"project": "[^"]*"' "$state_file" | cut -d'"' -f4 || true)
        container=$(grep -o '"container_name": "[^"]*"' "$state_file" | cut -d'"' -f4 || true)
        ssh_pid=$(grep -o '"ssh_tunnel_pid": [0-9]*' "$state_file" | awk '{print $2}' || true)

        # Check if SSH tunnel process is still alive
        if [ -n "$ssh_pid" ] && kill -0 "$ssh_pid" 2>/dev/null; then
            echo "• http://${domain}"
            echo "  SSH: $ssh_addr | Project: $project | Container: $container"
            echo ""
            active=$((active + 1))
        else
            # Stale state file — tunnel is dead. Drop the socket too.
            rm -f "$state_file" "${SOCKET_DIR}/${domain}.sock"
            stale=$((stale + 1))
        fi
    fi
done

if [ $active -eq 0 ]; then
    echo "No active tunnels"
fi

if [ $stale -gt 0 ]; then
    echo "Cleaned up $stale stale tunnel(s)"

    # Regenerate Caddyfile so Caddy stops proxying to the dead sockets.
    # Keep in sync with container-tunnel-caddy:update_caddy_config.
    {
        cat <<'HEADER'
{
    auto_https off
    admin localhost:2019
}

HEADER
        for state_file in "$TUNNEL_STATE_DIR"/*.json; do
            [ -f "$state_file" ] || continue
            domain=$(grep -o '"domain": "[^"]*"' "$state_file" | cut -d'"' -f4 || true)
            [ -n "$domain" ] || continue
            cat <<EOF
${domain}:80 {
    reverse_proxy unix//sockets/${domain}.sock
    respond /health 200
}

EOF
        done
    } > "$CADDYFILE"

    if docker ps --filter "name=worm-caddy" --filter "status=running" -q 2>/dev/null | grep -q .; then
        docker exec worm-caddy caddy reload --config /etc/caddy/Caddyfile 2>/dev/null || true
    fi
fi

exit 0