#!/usr/bin/env bash
# Test: `warpgate cache-clean --all` clears the VFS directory cache
#
# Verifies that cache-clean calls vfs/forget and prints a confirmation
# message.  Exit code must be 0.
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 mock NAS
start_mock_nas

# Generate config
gen_config

# Start warpgate and wait for readiness
start_warpgate
wait_for_mount 60
wait_for_rc_api 30

# Create and read a file to populate the cache
nas_create_file_content "clean-test.txt" "cache-me"
cat "$TEST_MOUNT/clean-test.txt" > /dev/null

# Verify file is cached before cleaning
assert_cached "clean-test.txt"

# Capture pre-clean vfs/stats for comparison
pre_clean_stats=$(rc_api "vfs/stats" 2>/dev/null || echo "{}")

# Run cache-clean --all
exit_code=0
output=$(run_warpgate_cmd cache-clean --all 2>&1) || exit_code=$?

# Verify exit code is 0
if [[ "$exit_code" -ne 0 ]]; then
    echo "FAIL: cache-clean exited with code $exit_code (expected 0)" >&2
    echo "  output: $output" >&2
    exit 1
fi

# Verify output confirms the cache was cleared
if echo "$output" | grep -qi "VFS directory cache cleared\|Clearing"; then
    true
else
    echo "FAIL: cache-clean output missing confirmation message" >&2
    echo "  output: $output" >&2
    exit 1
fi

# Verify cache was actually cleared by checking vfs/stats or that the
# directory cache no longer lists the file immediately after clean.
# After vfs/forget, re-listing should require a fresh remote lookup.
post_clean_stats=$(rc_api "vfs/stats" 2>/dev/null || echo "{}")
echo "INFO: pre-clean stats:  $pre_clean_stats"
echo "INFO: post-clean stats: $post_clean_stats"

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