#!/usr/bin/env bash
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
source "$SCRIPT_DIR/../harness/helpers.sh"
source "$SCRIPT_DIR/../harness/mock-nas.sh"

require_root
setup_test_env
trap teardown_test_env EXIT

# Start the mock NAS
start_mock_nas

# Generate a default config
gen_config

# Start warpgate and wait for full startup
start_warpgate
wait_for_log_line "Supervision active" 60

# Record the PID before killing
local_pid="$WARPGATE_PID"

# Send SIGKILL — this bypasses all signal handlers.
# The supervisor cannot perform orderly shutdown.
# rclone and smbd were spawned with .process_group(0), so they are
# in separate process groups and will NOT receive the SIGKILL.
kill -KILL "$local_pid"

# Wait for the killed process to be reaped
sleep 2

# Clear WARPGATE_PID so teardown does not try to SIGTERM a dead process
WARPGATE_PID=""

# Check for orphan rclone processes — since SIGKILL prevents cleanup,
# orphans are expected. This test documents the behavior.
orphan_rclone=$(pgrep -c -f "rclone.*$TEST_MOUNT" 2>/dev/null || echo 0)
orphan_smbd=$(pgrep -c -f "smbd.*$TEST_DIR" 2>/dev/null || echo 0)

if [[ "$orphan_rclone" -gt 0 ]]; then
    echo "INFO: found $orphan_rclone orphan rclone process(es) after SIGKILL (expected — process group isolation)"
fi

if [[ "$orphan_smbd" -gt 0 ]]; then
    echo "INFO: found $orphan_smbd orphan smbd process(es) after SIGKILL (expected — process group isolation)"
fi

# Clean up any orphan processes manually (don't rely on teardown alone)
pkill -9 -f "rclone.*$TEST_MOUNT" 2>/dev/null || true
pkill -9 -f "smbd.*$TEST_DIR" 2>/dev/null || true
sleep 1

# Unmount stale FUSE mount
if mountpoint -q "$TEST_MOUNT" 2>/dev/null; then
    fusermount3 -uz "$TEST_MOUNT" 2>/dev/null || fusermount -uz "$TEST_MOUNT" 2>/dev/null || true
    sleep 1
fi

# Assert no orphan rclone/smbd processes remain after cleanup
assert_no_orphan_rclone

orphan_smbd_after=$(pgrep -c -f "smbd.*$TEST_DIR" 2>/dev/null || echo 0)
if [[ "$orphan_smbd_after" -gt 0 ]]; then
    echo "FAIL: orphan smbd processes still remain after cleanup" >&2
    exit 1
fi

# Assert mount is unmounted
assert_not_mounted

echo "PASS: $(basename "$0" .sh)"