#!/bin/bash
# Kill orphaned Claude processes (no TTY or parent is init)
# An orphaned Claude process is one where:
#   - TTY is "?" (no terminal attached), OR
#   - Parent PID is 1 (adopted by init)

LOG_TAG="orphan-claude-killer"

# Find all claude processes
CLAUDE_PIDS=$(pgrep -x claude 2>/dev/null)

if [ -z "$CLAUDE_PIDS" ]; then
    exit 0
fi

for PID in $CLAUDE_PIDS; do
    # Get TTY and PPID for this process
    PROC_INFO=$(ps -o tty=,ppid= -p "$PID" 2>/dev/null)

    if [ -z "$PROC_INFO" ]; then
        # Process already gone
        continue
    fi

    PROC_TTY=$(echo "$PROC_INFO" | awk '{print $1}')
    PARENT_PID=$(echo "$PROC_INFO" | awk '{print $2}')

    ORPHANED=false
    REASON=""

    # Check if TTY is "?" (no terminal)
    if [ "$PROC_TTY" = "?" ]; then
        ORPHANED=true
        REASON="no TTY attached"
    fi

    # Check if parent PID is 1 (adopted by init)
    if [ "$PARENT_PID" = "1" ]; then
        ORPHANED=true
        REASON="parent is init (PPID=1)"
    fi

    if [ "$ORPHANED" = true ]; then
        # Get process start time for logging
        START_TIME=$(ps -o lstart= -p "$PID" 2>/dev/null)
        CPU=$(ps -o %cpu= -p "$PID" 2>/dev/null)
        MEM=$(ps -o %mem= -p "$PID" 2>/dev/null)

        logger "$LOG_TAG: Killing orphaned claude process PID=$PID ($REASON) started='$START_TIME' cpu=$CPU% mem=$MEM%"

        # Kill the process tree (claude may have child processes)
        pkill -9 -P "$PID" 2>/dev/null
        kill -9 "$PID" 2>/dev/null
    fi
done