#!/usr/bin/env bash
# DHARMA network — stop all running soul Engrams.
# Reads PIDs from /tmp/dharma-pids written by launch_dharma.sh.
# Falls back to killing by port if PID file is missing.
#
# Usage:
#   ./stop_dharma.sh            stop all soul Engrams
#   ./stop_dharma.sh <slug>     stop a single soul by slug

set -euo pipefail

PID_FILE=/tmp/dharma-pids
FILTER="${1:-}"

stopped=0
missed=0

# Kill via PID file if it exists
if [ -f "$PID_FILE" ]; then
    while IFS=' ' read -r pid slug port; do
        [ -z "$pid" ] && continue

        if [ -n "$FILTER" ] && [ "$slug" != "$FILTER" ]; then
            continue
        fi

        if kill -0 "$pid" 2>/dev/null; then
            kill "$pid"
            echo "[dharma] stopped $slug (pid=$pid port=$port)"
            stopped=$((stopped + 1))
        else
            echo "[dharma] $slug (pid=$pid) already gone"
        fi
    done < "$PID_FILE"

    if [ -z "$FILTER" ]; then
        rm -f "$PID_FILE"
    fi
else
    echo "[dharma] no PID file at $PID_FILE — killing by port scan"
    # Fall back: kill anything on ports 8801–8819
    for port in $(seq 8801 8819); do
        pids=$(lsof -ti tcp:"$port" 2>/dev/null || true)
        if [ -n "$pids" ]; then
            echo "[dharma] killing port $port (pids: $pids)"
            echo "$pids" | xargs kill 2>/dev/null || true
            stopped=$((stopped + 1))
        fi
    done
fi

echo ""
echo "[dharma] stopped=$stopped  missed=$missed"