#!/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"

# Test: files written while the network is down are uploaded once restored.
# Dirty files accumulate during the outage and drain automatically when
# connectivity returns.

require_root
setup_test_env
trap teardown_test_env EXIT

start_mock_nas

gen_config write_back=2s

start_warpgate
wait_for_mount
wait_for_rc_api

# Sever the network — uploads will fail
inject_network_down

# Write 5 files through the mount while offline
for i in $(seq 1 5); do
    echo "offline-data-$i" > "$TEST_MOUNT/offline-$i.txt"
done

# Allow VFS to register all writes
sleep 2

# All 5 files should be dirty (cannot upload)
dirty=$(get_dirty_count)
if [[ "$dirty" -lt 5 ]]; then
    echo "FAIL: expected dirty count >= 5, got $dirty" >&2
    exit 1
fi

# Restore the network — rclone should resume uploads
inject_network_up

# Wait for all dirty files to drain
wait_for_dirty_zero 120

# Verify all 5 files arrived on the NAS with correct content
for i in $(seq 1 5); do
    assert_file_content "$NAS_ROOT/offline-$i.txt" "offline-data-$i"
done

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